feat: use typescript-eslint@v6's reworked configs (#7425)

154 files changed, 318 insertions, 459 deletions

diff --git a/.eslintignore b/.eslintignore
index 28768c1b9..f5104aedd 100644
--- a/.eslintignore
+++ b/.eslintignore
@@ -1,4 +1,5 @@
 **/*.d.ts
+packages/**/*.min.js
 packages/**/dist/**/*
 packages/**/fixtures/**/*
 packages/webapi/**/*
diff --git a/.eslintrc.cjs b/.eslintrc.cjs
index a7ec9c8ea..3e4d26b01 100644
--- a/.eslintrc.cjs
+++ b/.eslintrc.cjs
@@ -1,23 +1,53 @@
 module.exports = {
+  extends: [
+    'plugin:@typescript-eslint/recommended-type-checked',
+    'plugin:@typescript-eslint/stylistic-type-checked',
+    'prettier',
+  ],
   parser: '@typescript-eslint/parser',
-  extends: ['plugin:@typescript-eslint/recommended', 'prettier'],
+  parserOptions: {
+    project: ['./packages/*/tsconfig.json', './tsconfig.eslint.json'],
+    tsconfigRootDir: __dirname,
+  },
   plugins: ['@typescript-eslint', 'prettier', 'no-only-tests'],
   rules: {
+    // These off/configured-differently-by-default rules fit well for us
+    '@typescript-eslint/array-type': ['error', { default: 'array-simple' }],
+    '@typescript-eslint/no-unused-vars': ['error', { ignoreRestSiblings: true }],
+    'no-only-tests/no-only-tests': 'error',
+    '@typescript-eslint/no-shadow': ['error'],
+    'no-console': 'warn',
+
+    // Todo: do we want these?
+    '@typescript-eslint/array-type': 'off',
     '@typescript-eslint/ban-ts-comment': 'off',
-    '@typescript-eslint/camelcase': 'off',
-    '@typescript-eslint/explicit-module-boundary-types': 'off',
+    '@typescript-eslint/class-literal-property-style': 'off',
+    '@typescript-eslint/consistent-indexed-object-style': 'off',
+    '@typescript-eslint/consistent-type-definitions': 'off',
+    '@typescript-eslint/dot-notation': 'off',
+    '@typescript-eslint/no-base-to-string': 'off',
+    '@typescript-eslint/no-confusing-void-expression': 'off',
     '@typescript-eslint/no-empty-function': 'off',
-    '@typescript-eslint/no-explicit-any': 'off',
-    '@typescript-eslint/no-non-null-assertion': 'off',
-    '@typescript-eslint/no-unused-vars': 'off',
-    '@typescript-eslint/no-use-before-define': 'off',
-    '@typescript-eslint/no-var-requires': 'off',
+    '@typescript-eslint/no-floating-promises': 'off',
+    '@typescript-eslint/no-misused-promises': 'off',
+    '@typescript-eslint/no-redundant-type-constituents': 'off',
     '@typescript-eslint/no-this-alias': 'off',
-    'no-console': 'warn',
+    '@typescript-eslint/no-unsafe-argument': 'off',
+    '@typescript-eslint/no-unsafe-assignment': 'off',
+    '@typescript-eslint/no-unsafe-call': 'off',
+    '@typescript-eslint/no-unsafe-member-access': 'off',
+    '@typescript-eslint/no-unsafe-return': 'off',
+    '@typescript-eslint/prefer-nullish-coalescing': 'off',
+    '@typescript-eslint/prefer-string-starts-ends-with': 'off',
+    '@typescript-eslint/require-await': 'off',
+    '@typescript-eslint/restrict-plus-operands': 'off',
+    '@typescript-eslint/restrict-template-expressions': 'off',
+    '@typescript-eslint/sort-type-constituents': 'off',
+    '@typescript-eslint/unbound-method': 'off',
+
+    // These rules enabled by the preset configs don't work well for us
+    '@typescript-eslint/await-thenable': 'off',
     'prefer-const': 'off',
-    'no-shadow': 'off',
-    '@typescript-eslint/no-shadow': ['error'],
-    'no-only-tests/no-only-tests': 'error',
   },
   overrides: [
     {
@@ -41,6 +71,7 @@ module.exports = {
     {
       files: ['benchmark/**/*.js'],
       rules: {
+        '@typescript-eslint/no-unused-vars': 'off',
         'no-console': 'off',
       },
     },
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index cf9e8fcbe..83867d38f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -32,7 +32,7 @@ env:
 jobs:
   lint:
     name: Lint
-    timeout-minutes: 3
+    timeout-minutes: 5
     runs-on: ubuntu-latest
     steps:
       - name: Check out repository
@@ -50,6 +50,9 @@ jobs:
       - name: Install dependencies
         run: pnpm install
 
+      - name: Build (ignoring failures)
+        run: pnpm run build || true
+
       # Lint autofix cannot run on forks, so just skip those! See https://github.com/wearerequired/lint-action/issues/13
       - name: Lint (External)
         if: ${{ github.event_name == 'pull_request' && github.event.pull_request.head.repo.owner.login != github.repository_owner }}
diff --git a/package.json b/package.json
index b65d19e88..32fae77e8 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
     "test:e2e": "cd packages/astro && pnpm playwright install && pnpm run test:e2e",
     "test:e2e:match": "cd packages/astro && pnpm playwright install && pnpm run test:e2e:match",
     "benchmark": "astro-benchmark",
-    "lint": "eslint --cache .",
+    "lint": "eslint . --report-unused-disable-directives",
     "version": "changeset version && node ./scripts/deps/update-example-versions.js && pnpm install --no-frozen-lockfile && pnpm run format",
     "preinstall": "npx only-allow pnpm"
   },
@@ -78,8 +78,8 @@
     "@changesets/changelog-github": "^0.4.8",
     "@changesets/cli": "^2.26.1",
     "@types/node": "^18.16.18",
-    "@typescript-eslint/eslint-plugin": "^5.60.0",
-    "@typescript-eslint/parser": "^5.60.0",
+    "@typescript-eslint/eslint-plugin": "6.0.0-alpha.158",
+    "@typescript-eslint/parser": "6.0.0-alpha.158",
     "esbuild": "^0.17.19",
     "eslint": "^8.43.0",
     "eslint-config-prettier": "^8.8.0",
diff --git a/packages/astro/astro.js b/packages/astro/astro.js
index 1fcf633a9..37ea869bc 100755
--- a/packages/astro/astro.js
+++ b/packages/astro/astro.js
@@ -1,5 +1,4 @@
 #!/usr/bin/env node
-/* eslint-disable no-console */
 'use strict';
 
 // ISOMORPHIC FILE: NO TOP-LEVEL IMPORT/REQUIRE() ALLOWED
diff --git a/packages/astro/e2e/css-sourcemaps.test.js b/packages/astro/e2e/css-sourcemaps.test.js
index 919d3c864..50b18834f 100644
--- a/packages/astro/e2e/css-sourcemaps.test.js
+++ b/packages/astro/e2e/css-sourcemaps.test.js
@@ -1,5 +1,5 @@
 import { expect } from '@playwright/test';
-import { getColor, isWindows, testFactory } from './test-utils.js';
+import { isWindows, testFactory } from './test-utils.js';
 
 const test = testFactory({
 	root: './fixtures/css/',
diff --git a/packages/astro/e2e/hydration-race.test.js b/packages/astro/e2e/hydration-race.test.js
index ffa78125f..0ee578243 100644
--- a/packages/astro/e2e/hydration-race.test.js
+++ b/packages/astro/e2e/hydration-race.test.js
@@ -19,8 +19,6 @@ test.describe('Hydration race', () => {
 	test('Islands inside of slots hydrate', async ({ page, astro }) => {
 		await page.goto(astro.resolveUrl('/slot'));
 
-		const html = await page.content();
-
 		const one = page.locator('#one');
 		await expect(one, 'updated text').toHaveText('Hello One in the client');
 
diff --git a/packages/astro/e2e/test-utils.js b/packages/astro/e2e/test-utils.js
index 72c6e8d56..0d0f18eb9 100644
--- a/packages/astro/e2e/test-utils.js
+++ b/packages/astro/e2e/test-utils.js
@@ -18,8 +18,7 @@ for (let i = 0; i < testFiles.length; i++) {
 }
 
 export function loadFixture(inlineConfig) {
-	if (!inlineConfig || !inlineConfig.root)
-		throw new Error("Must provide { root: './fixtures/...' }");
+	if (!inlineConfig?.root) throw new Error("Must provide { root: './fixtures/...' }");
 
 	// resolve the relative root (i.e. "./fixtures/tailwindcss") to a full filepath
 	// without this, the main `loadFixture` helper will resolve relative to `packages/astro/test`
diff --git a/packages/astro/src/assets/image-endpoint.ts b/packages/astro/src/assets/image-endpoint.ts
index e3553edbc..49fce8f05 100644
--- a/packages/astro/src/assets/image-endpoint.ts
+++ b/packages/astro/src/assets/image-endpoint.ts
@@ -35,7 +35,7 @@ export const get: APIRoute = async ({ request }) => {
 		const url = new URL(request.url);
 		const transform = await imageService.parseURL(url, imageServiceConfig);
 
-		if (!transform || !transform.src) {
+		if (!transform?.src) {
 			throw new Error('Incorrect transform returned by `parseURL`');
 		}
 
diff --git a/packages/astro/src/assets/services/squoosh.ts b/packages/astro/src/assets/services/squoosh.ts
index 089fcbc81..45933d600 100644
--- a/packages/astro/src/assets/services/squoosh.ts
+++ b/packages/astro/src/assets/services/squoosh.ts
@@ -36,7 +36,7 @@ const service: LocalImageService = {
 	async transform(inputBuffer, transformOptions) {
 		const transform: BaseServiceTransform = transformOptions as BaseServiceTransform;
 
-		let format = transform.format!;
+		let format = transform.format;
 
 		const operations: Operation[] = [];
 
diff --git a/packages/astro/src/assets/services/vendor/squoosh/codecs.ts b/packages/astro/src/assets/services/vendor/squoosh/codecs.ts
index d4065cee4..55b56d596 100644
--- a/packages/astro/src/assets/services/vendor/squoosh/codecs.ts
+++ b/packages/astro/src/assets/services/vendor/squoosh/codecs.ts
@@ -291,7 +291,6 @@ export const codecs = {
   avif: {
     name: 'AVIF',
     extension: 'avif',
-    // eslint-disable-next-line no-control-regex
     detectors: [/^\x00\x00\x00 ftypavif\x00\x00\x00\x00/],
     dec: () =>
       instantiateEmscriptenWasm(avifDec as DecodeModuleFactory, avifDecWasm),
@@ -322,7 +321,6 @@ export const codecs = {
   oxipng: {
     name: 'OxiPNG',
     extension: 'png',
-    // eslint-disable-next-line no-control-regex
     detectors: [/^\x89PNG\x0D\x0A\x1A\x0A/],
     dec: async () => {
       await pngEncDecInit()
diff --git a/packages/astro/src/assets/services/vendor/squoosh/image.ts b/packages/astro/src/assets/services/vendor/squoosh/image.ts
index 4a05d212c..694f994d2 100644
--- a/packages/astro/src/assets/services/vendor/squoosh/image.ts
+++ b/packages/astro/src/assets/services/vendor/squoosh/image.ts
@@ -29,14 +29,14 @@ export async function processBuffer(
 
 	switch (encoding) {
 		case 'avif':
-			return await impl.encodeAvif(imageData, { quality }) as Uint8Array;
+			return await impl.encodeAvif(imageData, { quality });
 		case 'jpeg':
 		case 'jpg':
-			return await impl.encodeJpeg(imageData, { quality }) as Uint8Array;
+			return await impl.encodeJpeg(imageData, { quality });
 		case 'png':
-			return await impl.encodePng(imageData) as Uint8Array;
+			return await impl.encodePng(imageData);
 		case 'webp':
-			return await impl.encodeWebp(imageData, { quality }) as Uint8Array;
+			return await impl.encodeWebp(imageData, { quality });
 		default:
 			throw Error(`Unsupported encoding format`)
 	}
diff --git a/packages/astro/src/assets/vendor/image-size/types/jp2.ts b/packages/astro/src/assets/vendor/image-size/types/jp2.ts
index e23e1aced..127a96d60 100644
--- a/packages/astro/src/assets/vendor/image-size/types/jp2.ts
+++ b/packages/astro/src/assets/vendor/image-size/types/jp2.ts
@@ -49,7 +49,6 @@ export const JP2: IImage = {
     switch (nextBoxType) {
     case BoxTypes.rreq:
       // WHAT ARE THESE 4 BYTES?????
-      // eslint-disable-next-line no-case-declarations
       const MAGIC = 4
       offset = offset + 4 + MAGIC + calculateRREQLength(buffer.slice(offset + 4))
       return parseIHDR(buffer.slice(offset + 8, offset + 24))
diff --git a/packages/astro/src/assets/vendor/image-size/types/pnm.ts b/packages/astro/src/assets/vendor/image-size/types/pnm.ts
index 687c6265e..fa30a53d5 100644
--- a/packages/astro/src/assets/vendor/image-size/types/pnm.ts
+++ b/packages/astro/src/assets/vendor/image-size/types/pnm.ts
@@ -19,7 +19,7 @@ const handlers: { [type: string]: Handler} = {
     let dimensions: string[] = []
 
     while (lines.length > 0) {
-      const line = lines.shift() as string
+      const line = lines.shift()!
       if (line[0] === '#') {
         continue
       }
@@ -39,7 +39,7 @@ const handlers: { [type: string]: Handler} = {
   pam: (lines) => {
     const size: { [key: string]: number } = {}
     while (lines.length > 0) {
-      const line = lines.shift() as string
+      const line = lines.shift()!
       if (line.length > 16 || line.charCodeAt(0) > 128) {
         continue
       }
diff --git a/packages/astro/src/assets/vendor/image-size/types/svg.ts b/packages/astro/src/assets/vendor/image-size/types/svg.ts
index 7cb164679..945be962d 100644
--- a/packages/astro/src/assets/vendor/image-size/types/svg.ts
+++ b/packages/astro/src/assets/vendor/image-size/types/svg.ts
@@ -41,8 +41,8 @@ function parseLength(len: string) {
 function parseViewbox(viewbox: string): IAttributes {
   const bounds = viewbox.split(' ')
   return {
-    height: parseLength(bounds[3]) as number,
-    width: parseLength(bounds[2]) as number
+    height: parseLength(bounds[3])!,
+    width: parseLength(bounds[2])!
   }
 }
 
@@ -51,21 +51,21 @@ function parseAttributes(root: string): IAttributes {
   const height = root.match(extractorRegExps.height)
   const viewbox = root.match(extractorRegExps.viewbox)
   return {
-    height: height && parseLength(height[2]) as number,
-    viewbox: viewbox && parseViewbox(viewbox[2]) as IAttributes,
-    width: width && parseLength(width[2]) as number,
+    height: height && parseLength(height[2])!,
+    viewbox: viewbox && parseViewbox(viewbox[2])!,
+    width: width && parseLength(width[2])!,
   }
 }
 
 function calculateByDimensions(attrs: IAttributes): ISize {
   return {
-    height: attrs.height as number,
-    width: attrs.width as number,
+    height: attrs.height!,
+    width: attrs.width!,
   }
 }
 
 function calculateByViewbox(attrs: IAttributes, viewbox: IAttributes): ISize {
-  const ratio = (viewbox.width as number) / (viewbox.height as number)
+  const ratio = (viewbox.width!) / (viewbox.height!)
   if (attrs.width) {
     return {
       height: Math.floor(attrs.width / ratio),
@@ -79,8 +79,8 @@ function calculateByViewbox(attrs: IAttributes, viewbox: IAttributes): ISize {
     }
   }
   return {
-    height: viewbox.height as number,
-    width: viewbox.width as number,
+    height: viewbox.height!,
+    width: viewbox.width!,
   }
 }
 
diff --git a/packages/astro/src/assets/vendor/image-size/types/tiff.ts b/packages/astro/src/assets/vendor/image-size/types/tiff.ts
index 1be697d29..dcbc9cf55 100644
--- a/packages/astro/src/assets/vendor/image-size/types/tiff.ts
+++ b/packages/astro/src/assets/vendor/image-size/types/tiff.ts
@@ -44,7 +44,7 @@ function extractTags(buffer: Buffer, isBigEndian: boolean) {
   const tags: {[key: number]: number} = {}
 
   let temp: Buffer | undefined = buffer
-  while (temp && temp.length) {
+  while (temp?.length) {
     const code = readUInt(temp, 16, 0, isBigEndian)
     const type = readUInt(temp, 16, 2, isBigEndian)
     const length = readUInt(temp, 32, 4, isBigEndian)
diff --git a/packages/astro/src/cli/check/index.ts b/packages/astro/src/cli/check/index.ts
index 07648aabe..cf0105461 100644
--- a/packages/astro/src/cli/check/index.ts
+++ b/packages/astro/src/cli/check/index.ts
@@ -1,4 +1,3 @@
-/* eslint-disable no-console */
 import {
 	AstroCheck,
 	DiagnosticSeverity,
diff --git a/packages/astro/src/content/error-map.ts b/packages/astro/src/content/error-map.ts
index 9fbfaf343..706de3882 100644
--- a/packages/astro/src/content/error-map.ts
+++ b/packages/astro/src/content/error-map.ts
@@ -14,7 +14,7 @@ export const errorMap: ZodErrorMap = (baseError, ctx) => {
 		// raise a single error when `key` does not match:
 		// > Did not match union.
 		// > key: Expected `'tutorial' | 'blog'`, received 'foo'
-		let typeOrLiteralErrByPath: Map<string, TypeOrLiteralErrByPathEntry> = new Map();
+		let typeOrLiteralErrByPath = new Map<string, TypeOrLiteralErrByPathEntry>();
 		for (const unionError of baseError.unionErrors.map((e) => e.errors).flat()) {
 			if (unionError.code === 'invalid_type' || unionError.code === 'invalid_literal') {
 				const flattenedErrorPath = flattenErrorPath(unionError.path);
diff --git a/packages/astro/src/content/utils.ts b/packages/astro/src/content/utils.ts
index 631f30e1f..d273dc105 100644
--- a/packages/astro/src/content/utils.ts
+++ b/packages/astro/src/content/utils.ts
@@ -177,7 +177,7 @@ export function getDataEntryExts(settings: Pick<AstroSettings, 'dataEntryTypes'>
 export function getEntryConfigByExtMap<TEntryType extends ContentEntryType | DataEntryType>(
 	entryTypes: TEntryType[]
 ): Map<string, TEntryType> {
-	const map: Map<string, TEntryType> = new Map();
+	const map = new Map<string, TEntryType>();
 	for (const entryType of entryTypes) {
 		for (const ext of entryType.extensions) {
 			map.set(ext, entryType);
@@ -310,7 +310,7 @@ function getYAMLErrorLine(rawData: string | undefined, objectKey: string) {
 	return numNewlinesBeforeKey;
 }
 
-export function parseFrontmatter(fileContents: string, filePath: string) {
+export function parseFrontmatter(fileContents: string) {
 	try {
 		// `matter` is empty string on cache results
 		// clear cache to prevent this
diff --git a/packages/astro/src/core/app/index.ts b/packages/astro/src/core/app/index.ts
index 69f8f73c4..c69267b92 100644
--- a/packages/astro/src/core/app/index.ts
+++ b/packages/astro/src/core/app/index.ts
@@ -203,7 +203,7 @@ export class App {
 	): Promise<Response> {
 		const url = new URL(request.url);
 		const pathname = prependForwardSlash(this.removeBase(url.pathname));
-		const info = this.#routeDataToRouteInfo.get(routeData!)!;
+		const info = this.#routeDataToRouteInfo.get(routeData)!;
 		const isCompressHTML = this.#manifest.compressHTML ?? false;
 		// may be used in the future for handling rel=modulepreload, rel=icon, rel=manifest etc.
 		const links = new Set<never>();
diff --git a/packages/astro/src/core/app/node.ts b/packages/astro/src/core/app/node.ts
index 40b7b4e7c..3e6207309 100644
--- a/packages/astro/src/core/app/node.ts
+++ b/packages/astro/src/core/app/node.ts
@@ -34,7 +34,7 @@ class NodeIncomingMessage extends IncomingMessage {
 	/**
 	 * The read-only body property of the Request interface contains a ReadableStream with the body contents that have been added to the request.
 	 */
-	body?: any | undefined;
+	body?: unknown;
 }
 
 export class NodeApp extends App {
diff --git a/packages/astro/src/core/build/generate.ts b/packages/astro/src/core/build/generate.ts
index 1ab28ecc0..72339a680 100644
--- a/packages/astro/src/core/build/generate.ts
+++ b/packages/astro/src/core/build/generate.ts
@@ -121,7 +121,7 @@ export function chunkIsPage(
 	if (output.type !== 'chunk') {
 		return false;
 	}
-	const chunk = output as OutputChunk;
+	const chunk = output;
 	if (chunk.facadeModuleId) {
 		const facadeToEntryId = prependForwardSlash(
 			rootRelativeFacadeId(chunk.facadeModuleId, settings)
@@ -470,15 +470,7 @@ async function generatePath(
 	onRequest?: MiddlewareHandler<unknown>
 ) {
 	const { settings, logging, origin, routeCache } = opts;
-	const {
-		mod,
-		internals,
-		linkIds,
-		scripts: hoistedScripts,
-		styles: _styles,
-		pageData,
-		renderers,
-	} = gopts;
+	const { mod, internals, scripts: hoistedScripts, styles: _styles, pageData, renderers } = gopts;
 
 	// This adds the page name to the array so it can be shown as part of stats.
 	if (pageData.route.type === 'page') {
diff --git a/packages/astro/src/core/build/plugins/index.ts b/packages/astro/src/core/build/plugins/index.ts
index 4563bb696..160e18fdd 100644
--- a/packages/astro/src/core/build/plugins/index.ts
+++ b/packages/astro/src/core/build/plugins/index.ts
@@ -18,11 +18,11 @@ export function registerAllPlugins({ internals, options, register }: AstroBuildP
 	register(pluginAliasResolve(internals));
 	register(pluginAnalyzer(internals));
 	register(pluginInternals(internals));
-	register(pluginRenderers(options, internals));
-	register(pluginMiddleware(options, internals));
+	register(pluginRenderers(options));
+	register(pluginMiddleware(options));
 	register(pluginPages(options, internals));
 	register(pluginCSS(options, internals));
-	register(astroHeadBuildPlugin(options, internals));
+	register(astroHeadBuildPlugin(internals));
 	register(pluginPrerender(options, internals));
 	register(astroConfigBuildPlugin(options, internals));
 	register(pluginHoistedScripts(options, internals));
diff --git a/packages/astro/src/core/build/plugins/plugin-analyzer.ts b/packages/astro/src/core/build/plugins/plugin-analyzer.ts
index e90063f28..b650e04f1 100644
--- a/packages/astro/src/core/build/plugins/plugin-analyzer.ts
+++ b/packages/astro/src/core/build/plugins/plugin-analyzer.ts
@@ -126,7 +126,7 @@ export function vitePluginAnalyzer(internals: BuildInternals): VitePlugin {
 
 			for (const id of ids) {
 				const info = this.getModuleInfo(id);
-				if (!info || !info.meta?.astro) continue;
+				if (!info?.meta?.astro) continue;
 
 				const astro = info.meta.astro as AstroPluginMetadata['astro'];
 
diff --git a/packages/astro/src/core/build/plugins/plugin-component-entry.ts b/packages/astro/src/core/build/plugins/plugin-component-entry.ts
index 444aa6a19..01e480e2f 100644
--- a/packages/astro/src/core/build/plugins/plugin-component-entry.ts
+++ b/packages/astro/src/core/build/plugins/plugin-component-entry.ts
@@ -10,7 +10,7 @@ export const astroEntryPrefix = '\0astro-entry:';
  * entries to re-export only the names the user is using.
  */
 export function vitePluginComponentEntry(internals: BuildInternals): VitePlugin {
-	const componentToExportNames: Map<string, string[]> = new Map();
+	const componentToExportNames = new Map<string, string[]>();
 
 	mergeComponentExportNames(internals.discoveredHydratedComponents);
 	mergeComponentExportNames(internals.discoveredClientOnlyComponents);
diff --git a/packages/astro/src/core/build/plugins/plugin-css.ts b/packages/astro/src/core/build/plugins/plugin-css.ts
index 1d2aa58ea..8971cf553 100644
--- a/packages/astro/src/core/build/plugins/plugin-css.ts
+++ b/packages/astro/src/core/build/plugins/plugin-css.ts
@@ -107,7 +107,7 @@ function rollupPluginAstroBuildCSS(options: PluginOptions): VitePlugin[] {
 		},
 
 		async generateBundle(_outputOptions, bundle) {
-			for (const [_, chunk] of Object.entries(bundle)) {
+			for (const [, chunk] of Object.entries(bundle)) {
 				if (chunk.type !== 'chunk') continue;
 				if ('viteMetadata' in chunk === false) continue;
 				const meta = chunk.viteMetadata as ViteMetadata;
diff --git a/packages/astro/src/core/build/plugins/plugin-middleware.ts b/packages/astro/src/core/build/plugins/plugin-middleware.ts
index 7e3ea8cb9..dee73d2f8 100644
--- a/packages/astro/src/core/build/plugins/plugin-middleware.ts
+++ b/packages/astro/src/core/build/plugins/plugin-middleware.ts
@@ -1,7 +1,6 @@
 import type { Plugin as VitePlugin } from 'vite';
 import { MIDDLEWARE_PATH_SEGMENT_NAME } from '../../constants.js';
 import { addRollupInput } from '../add-rollup-input.js';
-import type { BuildInternals } from '../internal.js';
 import type { AstroBuildPlugin } from '../plugin';
 import type { StaticBuildOptions } from '../types';
 
@@ -9,10 +8,7 @@ export const MIDDLEWARE_MODULE_ID = '@astro-middleware';
 
 const EMPTY_MIDDLEWARE = '\0empty-middleware';
 
-export function vitePluginMiddleware(
-	opts: StaticBuildOptions,
-	_internals: BuildInternals
-): VitePlugin {
+export function vitePluginMiddleware(opts: StaticBuildOptions): VitePlugin {
 	return {
 		name: '@astro/plugin-middleware',
 
@@ -44,16 +40,13 @@ export function vitePluginMiddleware(
 	};
 }
 
-export function pluginMiddleware(
-	opts: StaticBuildOptions,
-	internals: BuildInternals
-): AstroBuildPlugin {
+export function pluginMiddleware(opts: StaticBuildOptions): AstroBuildPlugin {
 	return {
 		build: 'ssr',
 		hooks: {
 			'build:before': () => {
 				return {
-					vitePlugin: vitePluginMiddleware(opts, internals),
+					vitePlugin: vitePluginMiddleware(opts),
 				};
 			},
 		},
diff --git a/packages/astro/src/core/build/plugins/plugin-pages.ts b/packages/astro/src/core/build/plugins/plugin-pages.ts
index c40449a39..cf078f0b5 100644
--- a/packages/astro/src/core/build/plugins/plugin-pages.ts
+++ b/packages/astro/src/core/build/plugins/plugin-pages.ts
@@ -39,7 +39,7 @@ function vitePluginPages(opts: StaticBuildOptions, internals: BuildInternals): V
 
 		options(options) {
 			if (opts.settings.config.output === 'static') {
-				const inputs: Set<string> = new Set();
+				const inputs = new Set<string>();
 
 				for (const [path, pageData] of Object.entries(opts.allPages)) {
 					if (routeIsRedirect(pageData.route)) {
diff --git a/packages/astro/src/core/build/plugins/plugin-renderers.ts b/packages/astro/src/core/build/plugins/plugin-renderers.ts
index d18eb5a02..912df4241 100644
--- a/packages/astro/src/core/build/plugins/plugin-renderers.ts
+++ b/packages/astro/src/core/build/plugins/plugin-renderers.ts
@@ -1,17 +1,12 @@
 import type { Plugin as VitePlugin } from 'vite';
 import { addRollupInput } from '../add-rollup-input.js';
-import type { BuildInternals } from '../internal.js';
 import type { AstroBuildPlugin } from '../plugin';
 import type { StaticBuildOptions } from '../types';
 
 export const RENDERERS_MODULE_ID = '@astro-renderers';
 export const RESOLVED_RENDERERS_MODULE_ID = `\0${RENDERERS_MODULE_ID}`;
 
-let inputs: Set<string> = new Set();
-export function vitePluginRenderers(
-	opts: StaticBuildOptions,
-	_internals: BuildInternals
-): VitePlugin {
+export function vitePluginRenderers(opts: StaticBuildOptions): VitePlugin {
 	return {
 		name: '@astro/plugin-renderers',
 
@@ -49,16 +44,13 @@ export function vitePluginRenderers(
 	};
 }
 
-export function pluginRenderers(
-	opts: StaticBuildOptions,
-	internals: BuildInternals
-): AstroBuildPlugin {
+export function pluginRenderers(opts: StaticBuildOptions): AstroBuildPlugin {
 	return {
 		build: 'ssr',
 		hooks: {
 			'build:before': () => {
 				return {
-					vitePlugin: vitePluginRenderers(opts, internals),
+					vitePlugin: vitePluginRenderers(opts),
 				};
 			},
 		},
diff --git a/packages/astro/src/core/build/plugins/plugin-ssr.ts b/packages/astro/src/core/build/plugins/plugin-ssr.ts
index 254037e59..41f38a8b2 100644
--- a/packages/astro/src/core/build/plugins/plugin-ssr.ts
+++ b/packages/astro/src/core/build/plugins/plugin-ssr.ts
@@ -42,10 +42,7 @@ function vitePluginSSR(
 		},
 		async load(id) {
 			if (id === RESOLVED_SSR_VIRTUAL_MODULE_ID) {
-				const {
-					settings: { config },
-					allPages,
-				} = options;
+				const { allPages } = options;
 				const imports: string[] = [];
 				const contents: string[] = [];
 				const exports: string[] = [];
@@ -82,7 +79,7 @@ function vitePluginSSR(
 		},
 		async generateBundle(_opts, bundle) {
 			// Add assets from this SSR chunk as well.
-			for (const [_chunkName, chunk] of Object.entries(bundle)) {
+			for (const [, chunk] of Object.entries(bundle)) {
 				if (chunk.type === 'asset') {
 					internals.staticFiles.add(chunk.fileName);
 				}
@@ -162,7 +159,7 @@ function vitePluginSSRSplit(
 		enforce: 'post',
 		options(opts) {
 			if (options.settings.config.build.split) {
-				const inputs: Set<string> = new Set();
+				const inputs = new Set<string>();
 
 				for (const path of Object.keys(options.allPages)) {
 					inputs.add(getVirtualModulePageNameFromPath(SPLIT_MODULE_ID, path));
@@ -178,10 +175,6 @@ function vitePluginSSRSplit(
 		},
 		async load(id) {
 			if (id.startsWith(RESOLVED_SPLIT_MODULE_ID)) {
-				const {
-					settings: { config },
-					allPages,
-				} = options;
 				const imports: string[] = [];
 				const contents: string[] = [];
 				const exports: string[] = [];
@@ -204,7 +197,7 @@ function vitePluginSSRSplit(
 		},
 		async generateBundle(_opts, bundle) {
 			// Add assets from this SSR chunk as well.
-			for (const [_chunkName, chunk] of Object.entries(bundle)) {
+			for (const [, chunk] of Object.entries(bundle)) {
 				if (chunk.type === 'asset') {
 					internals.staticFiles.add(chunk.fileName);
 				}
@@ -268,7 +261,7 @@ export function pluginSSRSplit(
 					logging: options.logging,
 					entryPoints: internals.entryPoints,
 				});
-				for (const [moduleName, chunk] of internals.ssrSplitEntryChunks) {
+				for (const [, chunk] of internals.ssrSplitEntryChunks) {
 					const code = injectManifest(manifest, chunk);
 					mutate(chunk, 'server', code);
 				}
@@ -413,8 +406,8 @@ function buildManifest(
 		if (!route.prerender) continue;
 		if (!route.pathname) continue;
 
-		const outFolder = getOutFolder(opts.settings.config, route.pathname!, route.type);
-		const outFile = getOutFile(opts.settings.config, outFolder, route.pathname!, route.type);
+		const outFolder = getOutFolder(opts.settings.config, route.pathname, route.type);
+		const outFile = getOutFile(opts.settings.config, outFolder, route.pathname, route.type);
 		const file = outFile.toString().replace(opts.settings.config.build.client.toString(), '');
 		routes.push({
 			file,
diff --git a/packages/astro/src/core/compile/compile.ts b/packages/astro/src/core/compile/compile.ts
index e78a761a4..425677123 100644
--- a/packages/astro/src/core/compile/compile.ts
+++ b/packages/astro/src/core/compile/compile.ts
@@ -78,6 +78,8 @@ export async function compile({
 }
 
 function handleCompileResultErrors(result: TransformResult, cssTransformErrors: AstroError[]) {
+	// TODO: Export the DiagnosticSeverity enum from @astrojs/compiler?
+	// eslint-disable-next-line @typescript-eslint/no-unsafe-enum-comparison
 	const compilerError = result.diagnostics.find((diag) => diag.severity === 1);
 
 	if (compilerError) {
@@ -96,7 +98,6 @@ function handleCompileResultErrors(result: TransformResult, cssTransformErrors:
 		case 0:
 			break;
 		case 1: {
-			const error = cssTransformErrors[0];
 			throw cssTransformErrors[0];
 		}
 		default: {
diff --git a/packages/astro/src/core/config/schema.ts b/packages/astro/src/core/config/schema.ts
index 99ef653d0..7410df470 100644
--- a/packages/astro/src/core/config/schema.ts
+++ b/packages/astro/src/core/config/schema.ts
@@ -8,7 +8,7 @@ import { BUNDLED_THEMES } from 'shiki';
 import { z } from 'zod';
 import { appendForwardSlash, prependForwardSlash, trimSlashes } from '../path.js';
 
-const ASTRO_CONFIG_DEFAULTS: AstroUserConfig & any = {
+const ASTRO_CONFIG_DEFAULTS = {
 	root: '.',
 	srcDir: './src',
 	publicDir: './public',
@@ -30,7 +30,6 @@ const ASTRO_CONFIG_DEFAULTS: AstroUserConfig & any = {
 	server: {
 		host: false,
 		port: 3000,
-		streaming: true,
 		open: false,
 	},
 	integrations: [],
@@ -45,7 +44,7 @@ const ASTRO_CONFIG_DEFAULTS: AstroUserConfig & any = {
 		assets: false,
 		redirects: false,
 	},
-};
+} satisfies AstroUserConfig & { server: { open: boolean } };
 
 export const AstroConfigSchema = z.object({
 	root: z
@@ -172,8 +171,8 @@ export const AstroConfigSchema = z.object({
 					theme: z
 						.enum(BUNDLED_THEMES as [Theme, ...Theme[]])
 						.or(z.custom<IThemeRegistration>())
-						.default(ASTRO_CONFIG_DEFAULTS.markdown.shikiConfig.theme),
-					wrap: z.boolean().or(z.null()).default(ASTRO_CONFIG_DEFAULTS.markdown.shikiConfig.wrap),
+						.default(ASTRO_CONFIG_DEFAULTS.markdown.shikiConfig.theme!),
+					wrap: z.boolean().or(z.null()).default(ASTRO_CONFIG_DEFAULTS.markdown.shikiConfig.wrap!),
 				})
 				.default({}),
 			remarkPlugins: z
diff --git a/packages/astro/src/core/config/timer.ts b/packages/astro/src/core/config/timer.ts
index 7360b5510..82860e0a7 100644
--- a/packages/astro/src/core/config/timer.ts
+++ b/packages/astro/src/core/config/timer.ts
@@ -18,7 +18,7 @@ interface OngoingStat {
  */
 export class AstroTimer {
 	private enabled: boolean;
-	private ongoingTimers: Map<string, OngoingStat> = new Map();
+	private ongoingTimers = new Map<string, OngoingStat>();
 	private stats: Record<string, Stat> = {};
 
 	constructor() {
diff --git a/packages/astro/src/core/cookies/cookies.ts b/packages/astro/src/core/cookies/cookies.ts
index e997c772e..013357f32 100644
--- a/packages/astro/src/core/cookies/cookies.ts
+++ b/packages/astro/src/core/cookies/cookies.ts
@@ -99,7 +99,7 @@ class AstroCookies implements AstroCookiesInterface {
 	 */
 	get(key: string): AstroCookie {
 		// Check for outgoing Set-Cookie values first
-		if (this.#outgoing !== null && this.#outgoing.has(key)) {
+		if (this.#outgoing?.has(key)) {
 			let [serializedValue, , isSetValue] = this.#outgoing.get(key)!;
 			if (isSetValue) {
 				return new AstroCookie(serializedValue);
@@ -120,7 +120,7 @@ class AstroCookies implements AstroCookiesInterface {
 	 * @returns
 	 */
 	has(key: string): boolean {
-		if (this.#outgoing !== null && this.#outgoing.has(key)) {
+		if (this.#outgoing?.has(key)) {
 			let [, , isSetValue] = this.#outgoing.get(key)!;
 			return isSetValue;
 		}
diff --git a/packages/astro/src/core/create-vite.ts b/packages/astro/src/core/create-vite.ts
index 89dec9d4b..60c847045 100644
--- a/packages/astro/src/core/create-vite.ts
+++ b/packages/astro/src/core/create-vite.ts
@@ -121,10 +121,10 @@ export async function createVite(
 			markdownVitePlugin({ settings, logging }),
 			htmlVitePlugin(),
 			jsxVitePlugin({ settings, logging }),
-			astroPostprocessVitePlugin({ settings }),
+			astroPostprocessVitePlugin(),
 			mode === 'dev' && astroIntegrationsContainerPlugin({ settings, logging }),
 			astroScriptsPageSSRPlugin({ settings }),
-			astroHeadPlugin({ settings }),
+			astroHeadPlugin(),
 			astroScannerPlugin({ settings }),
 			astroInjectEnvTsPlugin({ settings, logging, fs }),
 			astroContentVirtualModPlugin({ settings }),
@@ -315,12 +315,3 @@ function isCommonNotAstro(dep: string): boolean {
 		)
 	);
 }
-
-interface PkgJSON {
-	name: string;
-	dependencies?: Record<string, string>;
-	devDependencies?: Record<string, string>;
-	peerDependencies?: Record<string, string>;
-	keywords?: string[];
-	[key: string]: any;
-}
diff --git a/packages/astro/src/core/dev/restart.ts b/packages/astro/src/core/dev/restart.ts
index 9c71b7aa3..6e4c0b16f 100644
--- a/packages/astro/src/core/dev/restart.ts
+++ b/packages/astro/src/core/dev/restart.ts
@@ -125,7 +125,7 @@ interface Restart {
 
 export async function createContainerWithAutomaticRestart({
 	flags,
-	handleConfigError = (_e: Error) => {},
+	handleConfigError = () => {},
 	beforeRestart,
 	params,
 }: CreateContainerWithAutomaticRestart): Promise<Restart> {
@@ -143,7 +143,6 @@ export async function createContainerWithAutomaticRestart({
 	};
 
 	async function handleServerRestart(logMsg: string) {
-		// eslint-disable-next-line @typescript-eslint/no-shadow
 		const container = restart.container;
 		const { container: newContainer, error } = await restartContainer({
 			beforeRestart,
diff --git a/packages/astro/src/core/errors/dev/utils.ts b/packages/astro/src/core/errors/dev/utils.ts
index 29468c7fd..69026b6cd 100644
--- a/packages/astro/src/core/errors/dev/utils.ts
+++ b/packages/astro/src/core/errors/dev/utils.ts
@@ -20,11 +20,9 @@ type EsbuildMessage = ESBuildTransformResult['warnings'][number];
  */
 export function collectErrorMetadata(e: any, rootFolder?: URL | undefined): ErrorWithMetadata {
 	const err =
-		AggregateError.is(e) || Array.isArray((e as any).errors)
-			? (e.errors as SSRError[])
-			: [e as SSRError];
+		AggregateError.is(e) || Array.isArray(e.errors) ? (e.errors as SSRError[]) : [e as SSRError];
 
-	err.forEach((error, idx) => {
+	err.forEach((error) => {
 		if (e.stack) {
 			const stackInfo = collectInfoFromStacktrace(e);
 			error.stack = stackInfo.stack;
@@ -73,7 +71,7 @@ export function collectErrorMetadata(e: any, rootFolder?: URL | undefined): Erro
 
 	// If we received an array of errors and it's not from us, it's most likely from ESBuild, try to extract info for Vite to display
 	// NOTE: We still need to be defensive here, because it might not necessarily be from ESBuild, it's just fairly likely.
-	if (!AggregateError.is(e) && Array.isArray((e as any).errors)) {
+	if (!AggregateError.is(e) && Array.isArray(e.errors)) {
 		(e.errors as EsbuildMessage[]).forEach((buildError, i) => {
 			const { location, pluginName, text } = buildError;
 
@@ -226,7 +224,7 @@ export function renderErrorMarkdown(markdown: string, target: 'html' | 'cli') {
 	} else {
 		return markdown
 			.replace(linkRegex, (fullMatch, m1, m2) => `${bold(m1)} ${underline(m2)}`)
-			.replace(urlRegex, (fullMatch, m1) => ` ${underline(fullMatch.trim())} `)
+			.replace(urlRegex, (fullMatch) => ` ${underline(fullMatch.trim())} `)
 			.replace(boldRegex, (fullMatch, m1) => `${bold(m1)}`);
 	}
 }
diff --git a/packages/astro/src/core/errors/errors.ts b/packages/astro/src/core/errors/errors.ts
index cda4f328a..a73728124 100644
--- a/packages/astro/src/core/errors/errors.ts
+++ b/packages/astro/src/core/errors/errors.ts
@@ -81,7 +81,7 @@ export class AstroError extends Error {
 		this.frame = codeFrame(source, location);
 	}
 
-	static is(err: Error | unknown): err is AstroError {
+	static is(err: unknown): err is AstroError {
 		return (err as AstroError).type === 'AstroError';
 	}
 }
@@ -95,7 +95,7 @@ export class CompilerError extends AstroError {
 		this.name = 'CompilerError';
 	}
 
-	static is(err: Error | unknown): err is CompilerError {
+	static is(err: unknown): err is CompilerError {
 		return (err as CompilerError).type === 'CompilerError';
 	}
 }
@@ -103,7 +103,7 @@ export class CompilerError extends AstroError {
 export class CSSError extends AstroError {
 	type: ErrorTypes = 'CSSError';
 
-	static is(err: Error | unknown): err is CSSError {
+	static is(err: unknown): err is CSSError {
 		return (err as CSSError).type === 'CSSError';
 	}
 }
@@ -111,7 +111,7 @@ export class CSSError extends AstroError {
 export class MarkdownError extends AstroError {
 	type: ErrorTypes = 'MarkdownError';
 
-	static is(err: Error | unknown): err is MarkdownError {
+	static is(err: unknown): err is MarkdownError {
 		return (err as MarkdownError).type === 'MarkdownError';
 	}
 }
@@ -119,7 +119,7 @@ export class MarkdownError extends AstroError {
 export class InternalError extends AstroError {
 	type: ErrorTypes = 'InternalError';
 
-	static is(err: Error | unknown): err is InternalError {
+	static is(err: unknown): err is InternalError {
 		return (err as InternalError).type === 'InternalError';
 	}
 }
@@ -136,7 +136,7 @@ export class AggregateError extends AstroError {
 		this.errors = props.errors;
 	}
 
-	static is(err: Error | unknown): err is AggregateError {
+	static is(err: unknown): err is AggregateError {
 		return (err as AggregateError).type === 'AggregateError';
 	}
 }
diff --git a/packages/astro/src/core/errors/overlay.ts b/packages/astro/src/core/errors/overlay.ts
index 8f7e464f8..5a24f898a 100644
--- a/packages/astro/src/core/errors/overlay.ts
+++ b/packages/astro/src/core/errors/overlay.ts
@@ -1,4 +1,3 @@
-import type { AstroConfig } from '../../@types/astro';
 import type { AstroErrorPayload } from './dev/vite';
 
 const style = /* css */ `
@@ -665,7 +664,7 @@ class ErrorOverlay extends HTMLElement {
 					const errorLine = this.root.querySelector<HTMLSpanElement>('.error-line');
 
 					if (errorLine) {
-						if (errorLine.parentElement && errorLine.parentElement.parentElement) {
+						if (errorLine.parentElement?.parentElement) {
 							errorLine.parentElement.parentElement.scrollTop =
 								errorLine.offsetTop - errorLine.parentElement.parentElement.offsetTop - 8;
 						}
@@ -745,6 +744,6 @@ function getOverlayCode() {
 	`;
 }
 
-export function patchOverlay(code: string, config: AstroConfig) {
+export function patchOverlay(code: string) {
 	return code.replace('class ErrorOverlay', getOverlayCode() + '\nclass ViteErrorOverlay');
 }
diff --git a/packages/astro/src/core/errors/utils.ts b/packages/astro/src/core/errors/utils.ts
index 99cdde028..ea238d441 100644
--- a/packages/astro/src/core/errors/utils.ts
+++ b/packages/astro/src/core/errors/utils.ts
@@ -89,7 +89,7 @@ export function formatYAMLException(e: YAMLException): ViteErrorPayload['err'] {
 
 /** Coalesce any throw variable to an Error instance. */
 export function createSafeError(err: any): Error {
-	if (err instanceof Error || (err && err.name && err.message)) {
+	if (err instanceof Error || (err?.name && err.message)) {
 		return err;
 	} else {
 		const error = new Error(JSON.stringify(err));
diff --git a/packages/astro/src/core/middleware/callMiddleware.ts b/packages/astro/src/core/middleware/callMiddleware.ts
index f202a401a..afa0156c9 100644
--- a/packages/astro/src/core/middleware/callMiddleware.ts
+++ b/packages/astro/src/core/middleware/callMiddleware.ts
@@ -49,11 +49,6 @@ export async function callMiddleware<R>(
 	apiContext: APIContext,
 	responseFunction: () => Promise<R>
 ): Promise<Response | R> {
-	let resolveResolve: any;
-	new Promise((resolve) => {
-		resolveResolve = resolve;
-	});
-
 	let nextCalled = false;
 	let responseFunctionPromise: Promise<R> | undefined = undefined;
 	const next: MiddlewareNext<R> = async () => {
diff --git a/packages/astro/src/core/render/dev/index.ts b/packages/astro/src/core/render/dev/index.ts
index 43c0d450f..3fd0203fc 100644
--- a/packages/astro/src/core/render/dev/index.ts
+++ b/packages/astro/src/core/render/dev/index.ts
@@ -174,7 +174,7 @@ export async function renderPage(options: SSROptions): Promise<Response> {
 		adapterName: options.env.adapterName,
 	});
 	if (options.middleware) {
-		if (options.middleware && options.middleware.onRequest) {
+		if (options.middleware?.onRequest) {
 			const onRequest = options.middleware.onRequest as MiddlewareResponseHandler;
 			const response = await callMiddleware<Response>(env.logging, onRequest, apiContext, () => {
 				return coreRenderPage({
diff --git a/packages/astro/src/core/routing/manifest/create.ts b/packages/astro/src/core/routing/manifest/create.ts
index b5a683164..7695ccaec 100644
--- a/packages/astro/src/core/routing/manifest/create.ts
+++ b/packages/astro/src/core/routing/manifest/create.ts
@@ -33,8 +33,8 @@ interface Item {
 
 function countOccurrences(needle: string, haystack: string) {
 	let count = 0;
-	for (let i = 0; i < haystack.length; i += 1) {
-		if (haystack[i] === needle) count += 1;
+	for (const hay of haystack) {
+		if (hay === needle) count += 1;
 	}
 	return count;
 }
@@ -61,10 +61,6 @@ function getParts(part: string, file: string) {
 	return result;
 }
 
-function areSamePart(a: RoutePart, b: RoutePart) {
-	return a.content === b.content && a.dynamic === b.dynamic && a.spread === b.spread;
-}
-
 function getPattern(
 	segments: RoutePart[][],
 	base: string,
@@ -208,25 +204,6 @@ function injectedRouteToItem(
 	};
 }
 
-// Seeings if the two routes are siblings of each other, with `b` being the route
-// in focus. If it is in the same parent folder as `a`, they are siblings.
-function areSiblings(a: RouteData, b: RouteData) {
-	if (a.segments.length < b.segments.length) return false;
-	for (let i = 0; i < b.segments.length - 1; i++) {
-		let segment = b.segments[i];
-		if (segment.length === a.segments[i].length) {
-			for (let j = 0; j < segment.length; j++) {
-				if (!areSamePart(segment[j], a.segments[i][j])) {
-					return false;
-				}
-			}
-		} else {
-			return false;
-		}
-	}
-	return true;
-}
-
 export interface CreateRouteManifestParams {
 	/** Astro Settings object */
 	settings: AstroSettings;
@@ -243,16 +220,16 @@ export function createRouteManifest(
 ): ManifestData {
 	const components: string[] = [];
 	const routes: RouteData[] = [];
-	const validPageExtensions: Set<string> = new Set([
+	const validPageExtensions = new Set<string>([
 		'.astro',
 		...SUPPORTED_MARKDOWN_FILE_EXTENSIONS,
 		...settings.pageExtensions,
 	]);
-	const validEndpointExtensions: Set<string> = new Set(['.js', '.ts']);
+	const validEndpointExtensions = new Set<string>(['.js', '.ts']);
 	const localFs = fsMod ?? nodeFs;
 	const prerender = getPrerenderDefault(settings.config);
 
-	const foundInvalidFileExtensions: Set<string> = new Set();
+	const foundInvalidFileExtensions = new Set<string>();
 
 	function walk(
 		fs: typeof nodeFs,
diff --git a/packages/astro/src/events/error.ts b/packages/astro/src/events/error.ts
index 73ac2b5e4..cc7279f3d 100644
--- a/packages/astro/src/events/error.ts
+++ b/packages/astro/src/events/error.ts
@@ -29,7 +29,7 @@ interface ConfigErrorEventPayload extends ErrorEventPayload {
 const ANONYMIZE_MESSAGE_REGEX = /^(\w| )+/;
 function anonymizeErrorMessage(msg: string): string | undefined {
 	const matchedMessage = msg.match(ANONYMIZE_MESSAGE_REGEX);
-	if (!matchedMessage || !matchedMessage[0]) {
+	if (!matchedMessage?.[0]) {
 		return undefined;
 	}
 	return matchedMessage[0].trim().substring(0, 20);
@@ -72,6 +72,8 @@ export function eventError({
 		cliCommand: cmd,
 		isFatal: isFatal,
 		anonymousMessageHint:
+			// https://github.com/typescript-eslint/typescript-eslint/issues/4820
+			// eslint-disable-next-line @typescript-eslint/prefer-optional-chain -- errorData may be false
 			errorData && errorData.message
 				? getSafeErrorMessage(errorData.message)
 				: anonymizeErrorMessage(err.message),
diff --git a/packages/astro/src/runtime/client/visible.ts b/packages/astro/src/runtime/client/visible.ts
index e42b04339..cc4f77771 100644
--- a/packages/astro/src/runtime/client/visible.ts
+++ b/packages/astro/src/runtime/client/visible.ts
@@ -21,8 +21,7 @@ const visibleDirective: ClientDirective = (load, _options, el) => {
 		}
 	});
 
-	for (let i = 0; i < el.children.length; i++) {
-		const child = el.children[i];
+	for (const child of el.children) {
 		io.observe(child);
 	}
 };
diff --git a/packages/astro/src/runtime/server/astro-global.ts b/packages/astro/src/runtime/server/astro-global.ts
index da1f0e784..82855c669 100644
--- a/packages/astro/src/runtime/server/astro-global.ts
+++ b/packages/astro/src/runtime/server/astro-global.ts
@@ -4,7 +4,7 @@ import { AstroError, AstroErrorData } from '../../core/errors/index.js';
 
 /** Create the Astro.glob() runtime function. */
 function createAstroGlobFn() {
-	const globHandler = (importMetaGlobResult: Record<string, any>, globValue: () => any) => {
+	const globHandler = (importMetaGlobResult: Record<string, any>) => {
 		if (typeof importMetaGlobResult === 'string') {
 			throw new AstroError({
 				...AstroErrorData.AstroGlobUsedOutside,
diff --git a/packages/astro/src/runtime/server/astro-island.ts b/packages/astro/src/runtime/server/astro-island.ts
index 3f93cd817..5887f3149 100644
--- a/packages/astro/src/runtime/server/astro-island.ts
+++ b/packages/astro/src/runtime/server/astro-island.ts
@@ -118,13 +118,13 @@ declare const Astro: {
 					const templates = this.querySelectorAll('template[data-astro-template]');
 					for (const template of templates) {
 						const closest = template.closest(this.tagName);
-						if (!closest || !closest.isSameNode(this)) continue;
+						if (!closest?.isSameNode(this)) continue;
 						slots[template.getAttribute('data-astro-template') || 'default'] = template.innerHTML;
 						template.remove();
 					}
 					for (const slot of slotted) {
 						const closest = slot.closest(this.tagName);
-						if (!closest || !closest.isSameNode(this)) continue;
+						if (!closest?.isSameNode(this)) continue;
 						slots[slot.getAttribute('name') || 'default'] = slot.innerHTML;
 					}
 					const props = this.hasAttribute('props')
diff --git a/packages/astro/src/runtime/server/endpoint.ts b/packages/astro/src/runtime/server/endpoint.ts
index 8adc10c72..c56ab7646 100644
--- a/packages/astro/src/runtime/server/endpoint.ts
+++ b/packages/astro/src/runtime/server/endpoint.ts
@@ -19,7 +19,7 @@ function getHandlerFromModule(mod: EndpointHandler, method: string) {
 
 /** Renders an endpoint request to completion, returning the body. */
 export async function renderEndpoint(mod: EndpointHandler, context: APIContext, ssr: boolean) {
-	const { request, params, locals } = context;
+	const { request, params } = context;
 	const chosenMethod = request.method?.toLowerCase();
 	const handler = getHandlerFromModule(mod, chosenMethod);
 	if (!ssr && ssr === false && chosenMethod && chosenMethod !== 'get') {
diff --git a/packages/astro/src/runtime/server/jsx.ts b/packages/astro/src/runtime/server/jsx.ts
index c8da19eaf..6bea1bc71 100644
--- a/packages/astro/src/runtime/server/jsx.ts
+++ b/packages/astro/src/runtime/server/jsx.ts
@@ -85,10 +85,7 @@ Did you forget to import the component or is it possible there is a typo?`);
 				let props: Record<string, any> = {};
 				let slots: Record<string, any> = {};
 				for (const [key, value] of Object.entries(vnode.props ?? {})) {
-					if (
-						key === 'children' ||
-						(value && typeof value === 'object' && (value as any)['$$slot'])
-					) {
+					if (key === 'children' || (value && typeof value === 'object' && value['$$slot'])) {
 						slots[key === 'children' ? 'default' : key] = () => renderJSX(result, value);
 					} else {
 						props[key] = value;
@@ -117,7 +114,7 @@ Did you forget to import the component or is it possible there is a typo?`);
 					try {
 						const output = await vnode.type(vnode.props ?? {});
 						let renderResult: any;
-						if (output && output[AstroJSX]) {
+						if (output?.[AstroJSX]) {
 							renderResult = await renderJSXVNode(result, output, skip);
 							return renderResult;
 						} else if (!output) {
@@ -251,11 +248,9 @@ function useConsoleFilter() {
 	consoleFilterRefs++;
 
 	if (!originalConsoleError) {
-		// eslint-disable-next-line no-console
 		originalConsoleError = console.error;
 
 		try {
-			// eslint-disable-next-line no-console
 			console.error = filteredConsoleError;
 		} catch (error) {
 			// If we're unable to hook `console.error`, just accept it
diff --git a/packages/astro/src/runtime/server/render/head.ts b/packages/astro/src/runtime/server/render/head.ts
index 52923c790..8ac9df0e0 100644
--- a/packages/astro/src/runtime/server/render/head.ts
+++ b/packages/astro/src/runtime/server/render/head.ts
@@ -25,7 +25,7 @@ export function renderAllHeadContent(result: SSRResult) {
 	result.styles.clear();
 	const scripts = Array.from(result.scripts)
 		.filter(uniqueElements)
-		.map((script, i) => {
+		.map((script) => {
 			return renderElement('script', script, false);
 		});
 	const links = Array.from(result.links)
diff --git a/packages/astro/src/runtime/server/render/slot.ts b/packages/astro/src/runtime/server/render/slot.ts
index 09a8ff39c..152230ba9 100644
--- a/packages/astro/src/runtime/server/render/slot.ts
+++ b/packages/astro/src/runtime/server/render/slot.ts
@@ -51,7 +51,7 @@ export async function renderSlotToString(
 	let instructions: null | RenderInstruction[] = null;
 	let iterator = renderSlot(result, slotted, fallback);
 	for await (const chunk of iterator) {
-		if (typeof (chunk as any).type === 'string') {
+		if (typeof chunk.type === 'string') {
 			if (instructions === null) {
 				instructions = [];
 			}
diff --git a/packages/astro/src/vite-plugin-astro-postprocess/index.ts b/packages/astro/src/vite-plugin-astro-postprocess/index.ts
index 96735f2cb..be8ddb7b0 100644
--- a/packages/astro/src/vite-plugin-astro-postprocess/index.ts
+++ b/packages/astro/src/vite-plugin-astro-postprocess/index.ts
@@ -2,17 +2,12 @@ import { parse } from 'acorn';
 import { walk } from 'estree-walker';
 import MagicString from 'magic-string';
 import type { Plugin } from 'vite';
-import type { AstroSettings } from '../@types/astro';
 import { isMarkdownFile } from '../core/util.js';
 
 // Check for `Astro.glob()`. Be very forgiving of whitespace. False positives are okay.
 const ASTRO_GLOB_REGEX = /Astro2?\s*\.\s*glob\s*\(/;
 
-interface AstroPluginOptions {
-	settings: AstroSettings;
-}
-
-export default function astro(_opts: AstroPluginOptions): Plugin {
+export default function astro(): Plugin {
 	return {
 		name: 'astro:postprocess',
 		async transform(code, id) {
diff --git a/packages/astro/src/vite-plugin-astro-server/plugin.ts b/packages/astro/src/vite-plugin-astro-server/plugin.ts
index 29f83c85c..72d6deb95 100644
--- a/packages/astro/src/vite-plugin-astro-server/plugin.ts
+++ b/packages/astro/src/vite-plugin-astro-server/plugin.ts
@@ -31,7 +31,7 @@ export default function createVitePluginAstroServer({
 			const serverController = createController({ loader });
 
 			/** rebuild the route cache + manifest, as needed. */
-			function rebuildManifest(needsManifestRebuild: boolean, _file: string) {
+			function rebuildManifest(needsManifestRebuild: boolean) {
 				env.routeCache.clearAll();
 				if (needsManifestRebuild) {
 					manifest = createRouteManifest({ settings }, logging);
@@ -66,7 +66,7 @@ export default function createVitePluginAstroServer({
 			if (!id.includes('vite/dist/client/client.mjs')) return;
 
 			// Replace the Vite overlay with ours
-			return patchOverlay(code, settings.config);
+			return patchOverlay(code);
 		},
 	};
 }
diff --git a/packages/astro/src/vite-plugin-astro-server/request.ts b/packages/astro/src/vite-plugin-astro-server/request.ts
index 197033b04..21599064c 100644
--- a/packages/astro/src/vite-plugin-astro-server/request.ts
+++ b/packages/astro/src/vite-plugin-astro-server/request.ts
@@ -84,7 +84,7 @@ export async function handleRequest(
 
 			// This could be a runtime error from Vite's SSR module, so try to fix it here
 			try {
-				env.loader.fixStacktrace(err as Error);
+				env.loader.fixStacktrace(err);
 			} catch {}
 
 			// This is our last line of defense regarding errors where we still might have some information about the request
diff --git a/packages/astro/src/vite-plugin-astro-server/route.ts b/packages/astro/src/vite-plugin-astro-server/route.ts
index ffa6e1da6..aa3342a6c 100644
--- a/packages/astro/src/vite-plugin-astro-server/route.ts
+++ b/packages/astro/src/vite-plugin-astro-server/route.ts
@@ -137,7 +137,7 @@ export async function handleRoute(
 
 	const { config } = settings;
 	const filePath: URL | undefined = matchedRoute.filePath;
-	const { route, preloadedComponent, mod } = matchedRoute;
+	const { route, preloadedComponent } = matchedRoute;
 	const buildingToSSR = isServerLikeOutput(config);
 
 	// Headers are only available when using SSR.
diff --git a/packages/astro/src/vite-plugin-astro/compile.ts b/packages/astro/src/vite-plugin-astro/compile.ts
index 6bee4f672..001367615 100644
--- a/packages/astro/src/vite-plugin-astro/compile.ts
+++ b/packages/astro/src/vite-plugin-astro/compile.ts
@@ -93,8 +93,6 @@ async function enhanceCompileError({
 	err,
 	id,
 	source,
-	config,
-	logging,
 }: EnhanceCompilerErrorOptions): Promise<void> {
 	const lineText = (err as any).loc?.lineText;
 	// Verify frontmatter: a common reason that this plugin fails is that
@@ -122,7 +120,7 @@ async function enhanceCompileError({
 		} catch (frontmatterErr: any) {
 			// Improve the error by replacing the phrase "unexpected end of file"
 			// with "unexpected end of frontmatter" in the esbuild error message.
-			if (frontmatterErr && frontmatterErr.message) {
+			if (frontmatterErr?.message) {
 				frontmatterErr.message = frontmatterErr.message.replace(
 					'end of file',
 					'end of frontmatter'
diff --git a/packages/astro/src/vite-plugin-astro/hmr.ts b/packages/astro/src/vite-plugin-astro/hmr.ts
index 8c94cb646..f123dba3a 100644
--- a/packages/astro/src/vite-plugin-astro/hmr.ts
+++ b/packages/astro/src/vite-plugin-astro/hmr.ts
@@ -15,7 +15,7 @@ import { isAstroScript } from './query.js';
 const PKG_PREFIX = fileURLToPath(new URL('../../', import.meta.url));
 const E2E_PREFIX = fileURLToPath(new URL('../../e2e', import.meta.url));
 const isPkgFile = (id: string | null) => {
-	return id && id.startsWith(PKG_PREFIX) && !id.startsWith(E2E_PREFIX);
+	return id?.startsWith(PKG_PREFIX) && !id.startsWith(E2E_PREFIX);
 };
 
 export interface HandleHotUpdateOptions {
diff --git a/packages/astro/src/vite-plugin-astro/index.ts b/packages/astro/src/vite-plugin-astro/index.ts
index 70c4da611..c5523d712 100644
--- a/packages/astro/src/vite-plugin-astro/index.ts
+++ b/packages/astro/src/vite-plugin-astro/index.ts
@@ -88,7 +88,7 @@ export default function astro({ settings, logging }: AstroPluginOptions): vite.P
 					}
 
 					if (hoistedScript.type === 'external') {
-						const src = hoistedScript.src!;
+						const src = hoistedScript.src;
 						if (src.startsWith('/') && !isBrowserPath(src)) {
 							const publicDir = config.publicDir.pathname.replace(/\/$/, '').split('/').pop() + '/';
 							throw new Error(
diff --git a/packages/astro/src/vite-plugin-head/index.ts b/packages/astro/src/vite-plugin-head/index.ts
index 4f44aaf6e..9cfdc739f 100644
--- a/packages/astro/src/vite-plugin-head/index.ts
+++ b/packages/astro/src/vite-plugin-head/index.ts
@@ -1,8 +1,7 @@
 import type { ModuleInfo } from 'rollup';
 import type * as vite from 'vite';
-import type { AstroSettings, SSRComponentMetadata, SSRResult } from '../@types/astro';
+import type { SSRComponentMetadata, SSRResult } from '../@types/astro';
 import type { AstroBuildPlugin } from '../core/build/plugin.js';
-import type { StaticBuildOptions } from '../core/build/types';
 import type { PluginMetadata } from '../vite-plugin-astro/types';
 
 import { getTopLevelPages, walkParentInfos } from '../core/build/graph.js';
@@ -12,11 +11,7 @@ import { getAstroMetadata } from '../vite-plugin-astro/index.js';
 // Detect this in comments, both in .astro components and in js/ts files.
 const injectExp = /(^\/\/|\/\/!)\s*astro-head-inject/;
 
-export default function configHeadVitePlugin({
-	settings,
-}: {
-	settings: AstroSettings;
-}): vite.Plugin {
+export default function configHeadVitePlugin(): vite.Plugin {
 	let server: vite.ViteDevServer;
 
 	function propagateMetadata<
@@ -70,10 +65,7 @@ export default function configHeadVitePlugin({
 	};
 }
 
-export function astroHeadBuildPlugin(
-	options: StaticBuildOptions,
-	internals: BuildInternals
-): AstroBuildPlugin {
+export function astroHeadBuildPlugin(internals: BuildInternals): AstroBuildPlugin {
 	return {
 		build: 'ssr',
 		hooks: {
diff --git a/packages/astro/src/vite-plugin-html/transform/escape.ts b/packages/astro/src/vite-plugin-html/transform/escape.ts
index 5f2ecf6d6..1c250d43d 100644
--- a/packages/astro/src/vite-plugin-html/transform/escape.ts
+++ b/packages/astro/src/vite-plugin-html/transform/escape.ts
@@ -6,8 +6,8 @@ import { visit } from 'unist-util-visit';
 import { escape, needsEscape, replaceAttribute } from './utils.js';
 
 const rehypeEscape: Plugin<[{ s: MagicString }], Root> = ({ s }) => {
-	return (tree, file) => {
-		visit(tree, (node: Root | RootContent, index, parent) => {
+	return (tree) => {
+		visit(tree, (node: Root | RootContent) => {
 			if (node.type === 'text' || node.type === 'comment') {
 				if (needsEscape(node.value)) {
 					s.overwrite(node.position!.start.offset!, node.position!.end.offset!, escape(node.value));
diff --git a/packages/astro/src/vite-plugin-html/transform/slots.ts b/packages/astro/src/vite-plugin-html/transform/slots.ts
index e89cad42c..a549a48c9 100644
--- a/packages/astro/src/vite-plugin-html/transform/slots.ts
+++ b/packages/astro/src/vite-plugin-html/transform/slots.ts
@@ -7,7 +7,7 @@ import { escape } from './utils.js';
 
 const rehypeSlots: Plugin<[{ s: MagicString }], Root> = ({ s }) => {
 	return (tree, file) => {
-		visit(tree, (node: Root | RootContent, index, parent) => {
+		visit(tree, (node: Root | RootContent) => {
 			if (node.type === 'element' && node.tagName === 'slot') {
 				if (typeof node.properties?.['is:inline'] !== 'undefined') return;
 				const name = node.properties?.['name'] ?? 'default';
diff --git a/packages/astro/src/vite-plugin-jsx/import-source.ts b/packages/astro/src/vite-plugin-jsx/import-source.ts
index 35efcaeda..c1f9ea6dc 100644
--- a/packages/astro/src/vite-plugin-jsx/import-source.ts
+++ b/packages/astro/src/vite-plugin-jsx/import-source.ts
@@ -51,7 +51,7 @@ function detectImportSourceFromComments(code: string): string | undefined {
 	// if no imports were found, look for @jsxImportSource comment
 	const multiline = code.match(/\/\*\*?[\S\s]*\*\//gm) || [];
 	for (const comment of multiline) {
-		const [_, lib] = comment.slice(0, -2).match(/@jsxImportSource\s*(\S+)/) || [];
+		const [, lib] = comment.slice(0, -2).match(/@jsxImportSource\s*(\S+)/) || [];
 		if (lib) {
 			return lib.trim();
 		}
diff --git a/packages/astro/src/vite-plugin-jsx/tag.ts b/packages/astro/src/vite-plugin-jsx/tag.ts
index eab920f63..5efc4c41f 100644
--- a/packages/astro/src/vite-plugin-jsx/tag.ts
+++ b/packages/astro/src/vite-plugin-jsx/tag.ts
@@ -11,7 +11,6 @@ import * as t from '@babel/types';
  */
 export default async function tagExportsWithRenderer({
 	rendererName,
-	root,
 }: {
 	rendererName: string;
 	root: URL;
diff --git a/packages/astro/src/vite-plugin-markdown/content-entry-type.ts b/packages/astro/src/vite-plugin-markdown/content-entry-type.ts
index 92bb118d4..dc3296974 100644
--- a/packages/astro/src/vite-plugin-markdown/content-entry-type.ts
+++ b/packages/astro/src/vite-plugin-markdown/content-entry-type.ts
@@ -1,11 +1,10 @@
-import { fileURLToPath } from 'node:url';
 import type { ContentEntryType } from '../@types/astro.js';
 import { parseFrontmatter } from '../content/utils.js';
 
 export const markdownContentEntryType: ContentEntryType = {
 	extensions: ['.md'],
-	async getEntryInfo({ fileUrl, contents }: { fileUrl: URL; contents: string }) {
-		const parsed = parseFrontmatter(contents, fileURLToPath(fileUrl));
+	async getEntryInfo({ contents }: { contents: string }) {
+		const parsed = parseFrontmatter(contents);
 		return {
 			data: parsed.data,
 			body: parsed.content,
diff --git a/packages/astro/src/vite-plugin-scanner/scan.ts b/packages/astro/src/vite-plugin-scanner/scan.ts
index 7723c3fd6..83ca3c5c5 100644
--- a/packages/astro/src/vite-plugin-scanner/scan.ts
+++ b/packages/astro/src/vite-plugin-scanner/scan.ts
@@ -41,7 +41,7 @@ export async function scan(code: string, id: string, isHybridOutput = false): Pr
 		didInit = true;
 	}
 
-	const [_, exports] = eslexer.parse(code, id);
+	const [, exports] = eslexer.parse(code, id);
 	let pageOptions: PageOptions = {};
 	for (const _export of exports) {
 		const { n: name, le: endOfLocalName } = _export;
diff --git a/packages/astro/src/vite-plugin-scripts/index.ts b/packages/astro/src/vite-plugin-scripts/index.ts
index 18f90b057..d49d0e22f 100644
--- a/packages/astro/src/vite-plugin-scripts/index.ts
+++ b/packages/astro/src/vite-plugin-scripts/index.ts
@@ -48,7 +48,7 @@ export default function astroScriptsPlugin({ settings }: { settings: AstroSettin
 			}
 			return null;
 		},
-		buildStart(options) {
+		buildStart() {
 			const hasHydrationScripts = settings.scripts.some((s) => s.stage === 'before-hydration');
 			if (hasHydrationScripts && env?.command === 'build' && !env?.ssrBuild) {
 				this.emitFile({
diff --git a/packages/astro/src/vite-plugin-ssr-manifest/index.ts b/packages/astro/src/vite-plugin-ssr-manifest/index.ts
index 4ced3d032..05e1f54be 100644
--- a/packages/astro/src/vite-plugin-ssr-manifest/index.ts
+++ b/packages/astro/src/vite-plugin-ssr-manifest/index.ts
@@ -7,7 +7,7 @@ export function vitePluginSSRManifest(): VitePlugin {
 	return {
 		name: '@astrojs/vite-plugin-astro-ssr-manifest',
 		enforce: 'post',
-		resolveId(id, parent) {
+		resolveId(id) {
 			if (id === manifestVirtualModuleId) {
 				return resolvedManifestVirtualModuleId;
 			}
diff --git a/packages/astro/test/astro-dynamic.test.js b/packages/astro/test/astro-dynamic.test.js
index 5ed34b8ba..5d91815ba 100644
--- a/packages/astro/test/astro-dynamic.test.js
+++ b/packages/astro/test/astro-dynamic.test.js
@@ -20,7 +20,6 @@ describe('Dynamic components', () => {
 	});
 
 	it('Loads pages using client:media hydrator', async () => {
-		const root = new URL('http://example.com/media/index.html');
 		const html = await fixture.readFile('/media/index.html');
 		const $ = cheerio.load(html);
 
diff --git a/packages/astro/test/astro-pagination.test.js b/packages/astro/test/astro-pagination.test.js
index 994f8e0ac..5fb3a8dbd 100644
--- a/packages/astro/test/astro-pagination.test.js
+++ b/packages/astro/test/astro-pagination.test.js
@@ -41,7 +41,7 @@ describe('Pagination', () => {
 			{ color: 'blue', p: '2' },
 		];
 		await Promise.all(
-			params.map(async ({ color, p }, idx) => {
+			params.map(async ({ color, p }) => {
 				const html = await fixture.readFile(`/posts/${color}/${p}/index.html`);
 				const $ = cheerio.load(html);
 				expect($('#page-param').text()).to.equal(p);
diff --git a/packages/astro/test/astro-response.test.js b/packages/astro/test/astro-response.test.js
index 050feaabb..c77e7bad3 100644
--- a/packages/astro/test/astro-response.test.js
+++ b/packages/astro/test/astro-response.test.js
@@ -1,5 +1,4 @@
 import { expect } from 'chai';
-import { load as cheerioLoad } from 'cheerio';
 import { loadFixture } from './test-utils.js';
 
 // Asset bundling
diff --git a/packages/astro/test/component-library.test.js b/packages/astro/test/component-library.test.js
index bab16230b..58c7fb6b8 100644
--- a/packages/astro/test/component-library.test.js
+++ b/packages/astro/test/component-library.test.js
@@ -21,7 +21,7 @@ describe('Component Libraries', () => {
 			await fixture.build();
 		});
 
-		function createFindEvidence(expected, prefix) {
+		function createFindEvidence(expected) {
 			return async function findEvidence(pathname) {
 				const html = await fixture.readFile(pathname);
 				const $ = cheerioLoad(html);
@@ -102,7 +102,7 @@ describe('Component Libraries', () => {
 			await devServer.stop();
 		});
 
-		function createFindEvidence(expected, prefix) {
+		function createFindEvidence(expected) {
 			return async function findEvidence(pathname) {
 				const html = await fixture.fetch(pathname).then((res) => res.text());
 				const $ = cheerioLoad(html);
diff --git a/packages/astro/test/config-mode.test.js b/packages/astro/test/config-mode.test.js
index 76c45ba48..84dafb81f 100644
--- a/packages/astro/test/config-mode.test.js
+++ b/packages/astro/test/config-mode.test.js
@@ -1,5 +1,4 @@
 import { expect } from 'chai';
-import { load as cheerioLoad } from 'cheerio';
 import { loadFixture } from './test-utils.js';
 import testAdapter from './test-adapter.js';
 
diff --git a/packages/astro/test/error-bad-js.test.js b/packages/astro/test/error-bad-js.test.js
index 9149d8ad5..ba02c62ff 100644
--- a/packages/astro/test/error-bad-js.test.js
+++ b/packages/astro/test/error-bad-js.test.js
@@ -1,5 +1,4 @@
 import { expect } from 'chai';
-import * as cheerio from 'cheerio';
 import { loadFixture, silentLogging } from './test-utils.js';
 
 describe('Errors in JavaScript', () => {
diff --git a/packages/astro/test/postcss.test.js b/packages/astro/test/postcss.test.js
index b2d663533..126fca95c 100644
--- a/packages/astro/test/postcss.test.js
+++ b/packages/astro/test/postcss.test.js
@@ -4,8 +4,6 @@ import eol from 'eol';
 import { loadFixture } from './test-utils.js';
 
 describe('PostCSS', function () {
-	const PREFIXED_CSS = `{-webkit-appearance:none;appearance:none`;
-
 	let fixture;
 	let bundledCSS;
 	before(async () => {
diff --git a/packages/astro/test/public-base-404.test.js b/packages/astro/test/public-base-404.test.js
index bf98967cb..c8d58471d 100644
--- a/packages/astro/test/public-base-404.test.js
+++ b/packages/astro/test/public-base-404.test.js
@@ -5,8 +5,6 @@ import { loadFixture } from './test-utils.js';
 describe('Public dev with base', () => {
 	/** @type {import('./test-utils').Fixture} */
 	let fixture;
-	/** @type {import('./test-utils').DevServer} */
-	let devServer;
 	let $;
 
 	before(async () => {
@@ -15,7 +13,7 @@ describe('Public dev with base', () => {
 			site: 'http://example.com/',
 			base: '/blog',
 		});
-		devServer = await fixture.startDevServer();
+		await fixture.startDevServer();
 	});
 
 	it('200 when loading /@vite/client', async () => {
diff --git a/packages/astro/test/static-build-page-url-format.test.js b/packages/astro/test/static-build-page-url-format.test.js
index 6d08e85e6..2f8660b63 100644
--- a/packages/astro/test/static-build-page-url-format.test.js
+++ b/packages/astro/test/static-build-page-url-format.test.js
@@ -1,11 +1,6 @@
 import { expect } from 'chai';
-import * as cheerio from 'cheerio';
 import { loadFixture } from './test-utils.js';
 
-function addLeadingSlash(path) {
-	return path.startsWith('/') ? path : '/' + path;
-}
-
 describe("Static build - format: 'file'", () => {
 	let fixture;
 
diff --git a/packages/astro/test/static-build.test.js b/packages/astro/test/static-build.test.js
index db35ef991..d4a687a5d 100644
--- a/packages/astro/test/static-build.test.js
+++ b/packages/astro/test/static-build.test.js
@@ -88,7 +88,7 @@ describe('Static build', () => {
 		}
 	});
 
-	function createFindEvidence(expected, prefix) {
+	function createFindEvidence(expected) {
 		return async function findEvidence(pathname) {
 			const html = await fixture.readFile(pathname);
 			const $ = cheerioLoad(html);
diff --git a/packages/astro/test/test-utils.js b/packages/astro/test/test-utils.js
index 953ebf6da..1fa04d47a 100644
--- a/packages/astro/test/test-utils.js
+++ b/packages/astro/test/test-utils.js
@@ -101,8 +101,7 @@ export const silentLogging = {
  *   .clean()          - Async. Removes the project’s dist folder.
  */
 export async function loadFixture(inlineConfig) {
-	if (!inlineConfig || !inlineConfig.root)
-		throw new Error("Must provide { root: './fixtures/...' }");
+	if (!inlineConfig?.root) throw new Error("Must provide { root: './fixtures/...' }");
 
 	// load config
 	let cwd = inlineConfig.root;
@@ -235,7 +234,7 @@ export async function loadFixture(inlineConfig) {
 		},
 		loadTestAdapterApp: async (streaming) => {
 			const url = new URL(`./server/entry.mjs?id=${fixtureId}`, config.outDir);
-			const { createApp, manifest, middleware } = await import(url);
+			const { createApp, manifest } = await import(url);
 			const app = createApp(streaming);
 			app.manifest = manifest;
 			return app;
diff --git a/packages/astro/test/units/compile/invalid-css.test.js b/packages/astro/test/units/compile/invalid-css.test.js
index 6be17620a..52da94816 100644
--- a/packages/astro/test/units/compile/invalid-css.test.js
+++ b/packages/astro/test/units/compile/invalid-css.test.js
@@ -9,7 +9,7 @@ describe('astro/src/core/compile', () => {
 		it('throws an aggregate error with the errors', async () => {
 			let error;
 			try {
-				let r = await cachedCompilation({
+				await cachedCompilation({
 					astroConfig: {
 						root: pathToFileURL('/'),
 					},
diff --git a/packages/astro/test/units/config/format.test.js b/packages/astro/test/units/config/format.test.js
index 175ea9f04..602c19cc3 100644
--- a/packages/astro/test/units/config/format.test.js
+++ b/packages/astro/test/units/config/format.test.js
@@ -1,6 +1,4 @@
 import { expect } from 'chai';
-import * as cheerio from 'cheerio';
-import { fileURLToPath } from 'url';
 
 import { runInContainer } from '../../../dist/core/dev/index.js';
 import { openConfig, createSettings } from '../../../dist/core/config/index.js';
diff --git a/packages/astro/test/units/dev/hydration.test.js b/packages/astro/test/units/dev/hydration.test.js
index 0fb10ffda..0a176b4db 100644
--- a/packages/astro/test/units/dev/hydration.test.js
+++ b/packages/astro/test/units/dev/hydration.test.js
@@ -48,7 +48,7 @@ describe('dev container', () => {
 					url: '/',
 				});
 				container.handle(req, res);
-				const html = await done;
+				await done;
 				expect(res.statusCode).to.equal(
 					200,
 					"We get a 200 because the error occurs in the template, but we didn't crash!"
diff --git a/packages/astro/test/units/dev/styles.test.js b/packages/astro/test/units/dev/styles.test.js
index 76af929be..45bb6e172 100644
--- a/packages/astro/test/units/dev/styles.test.js
+++ b/packages/astro/test/units/dev/styles.test.js
@@ -1,5 +1,4 @@
 import { expect } from 'chai';
-import { fileURLToPath } from 'url';
 
 import { getStylesForURL } from '../../../dist/core/render/dev/css.js';
 import { viteID } from '../../../dist/core/util.js';
diff --git a/packages/astro/test/units/render/head.test.js b/packages/astro/test/units/render/head.test.js
index 83fbc8b11..480651fd1 100644
--- a/packages/astro/test/units/render/head.test.js
+++ b/packages/astro/test/units/render/head.test.js
@@ -72,7 +72,7 @@ describe('core/render', () => {
 				`;
 			});
 
-			const Page = createComponent((result, _props) => {
+			const Page = createComponent((result) => {
 				return render`${renderComponent(
 					result,
 					'PageLayout',
@@ -158,7 +158,7 @@ describe('core/render', () => {
 				`;
 			});
 
-			const Page = createComponent((result, _props) => {
+			const Page = createComponent((result) => {
 				return render`${renderComponent(
 					result,
 					'PageLayout',
@@ -221,7 +221,7 @@ describe('core/render', () => {
 				`;
 			});
 
-			const Page = createComponent((result, _props) => {
+			const Page = createComponent((result) => {
 				return render`${renderComponent(
 					result,
 					'PageLayout',
diff --git a/packages/astro/test/units/render/jsx.test.js b/packages/astro/test/units/render/jsx.test.js
index 09cf79239..e972213f1 100644
--- a/packages/astro/test/units/render/jsx.test.js
+++ b/packages/astro/test/units/render/jsx.test.js
@@ -119,7 +119,7 @@ describe('core/render', () => {
 				throw new Error('uh oh');
 			});
 
-			const Page = createComponent((result, _props) => {
+			const Page = createComponent((result) => {
 				return render`<div>${renderComponent(result, 'Component', Component, {})}</div>`;
 			});
 
diff --git a/packages/astro/test/units/test-utils.js b/packages/astro/test/units/test-utils.js
index 68a86d475..78c7daca0 100644
--- a/packages/astro/test/units/test-utils.js
+++ b/packages/astro/test/units/test-utils.js
@@ -3,7 +3,7 @@ import { Volume } from 'memfs';
 import httpMocks from 'node-mocks-http';
 import realFS from 'node:fs';
 import npath from 'path';
-import { fileURLToPath, pathToFileURL } from 'url';
+import { fileURLToPath } from 'url';
 import { unixify } from './correct-path.js';
 
 class VirtualVolume extends Volume {
diff --git a/packages/astro/test/units/vite-plugin-scanner/scan.test.js b/packages/astro/test/units/vite-plugin-scanner/scan.test.js
index 7b9c598be..3d812a893 100644
--- a/packages/astro/test/units/vite-plugin-scanner/scan.test.js
+++ b/packages/astro/test/units/vite-plugin-scanner/scan.test.js
@@ -49,7 +49,7 @@ describe('astro scan', () => {
 
 	it('throws on let boolean literal', async () => {
 		try {
-			const result = await scan(`export let prerender = true;`, '/src/components/index.astro');
+			await scan(`export let prerender = true;`, '/src/components/index.astro');
 			expect(false).to.be.true;
 		} catch (e) {
 			expect(e.message).to.contain(
@@ -60,7 +60,7 @@ describe('astro scan', () => {
 
 	it('throws on var boolean literal', async () => {
 		try {
-			const result = await scan(`export var prerender = true;`, '/src/components/index.astro');
+			await scan(`export var prerender = true;`, '/src/components/index.astro');
 			expect(false).to.be.true;
 		} catch (e) {
 			expect(e.message).to.contain(
@@ -71,7 +71,7 @@ describe('astro scan', () => {
 
 	it('throws on unknown values I', async () => {
 		try {
-			const result = await scan(`export const prerender = !!value;`, '/src/components/index.astro');
+			await scan(`export const prerender = !!value;`, '/src/components/index.astro');
 			expect(false).to.be.true;
 		} catch (e) {
 			expect(e.message).to.contain(
@@ -82,7 +82,7 @@ describe('astro scan', () => {
 
 	it('throws on unknown values II', async () => {
 		try {
-			const result = await scan(`export const prerender = value;`, '/src/components/index.astro');
+			await scan(`export const prerender = value;`, '/src/components/index.astro');
 			expect(false).to.be.true;
 		} catch (e) {
 			expect(e.message).to.contain(
@@ -93,7 +93,7 @@ describe('astro scan', () => {
 
 	it('throws on unknown values III', async () => {
 		try {
-			const result = await scan(
+			await scan(
 				`export let prerender = undefined; prerender = true;`,
 				'/src/components/index.astro'
 			);
@@ -107,10 +107,7 @@ describe('astro scan', () => {
 
 	it('throws on unknown values IV', async () => {
 		try {
-			const result = await scan(
-				`let prerender = true; export { prerender }`,
-				'/src/components/index.astro'
-			);
+			await scan(`let prerender = true; export { prerender }`, '/src/components/index.astro');
 			expect(false).to.be.true;
 		} catch (e) {
 			expect(e.message).to.contain(
diff --git a/packages/astro/test/vue-with-multi-renderer.test.js b/packages/astro/test/vue-with-multi-renderer.test.js
index 62ad96491..78b243d78 100644
--- a/packages/astro/test/vue-with-multi-renderer.test.js
+++ b/packages/astro/test/vue-with-multi-renderer.test.js
@@ -1,5 +1,4 @@
 import { expect } from 'chai';
-import * as cheerio from 'cheerio';
 import { loadFixture } from './test-utils.js';
 
 describe('Vue with multi-renderer', () => {
diff --git a/packages/create-astro/src/actions/context.ts b/packages/create-astro/src/actions/context.ts
index 35e2e4688..172976b95 100644
--- a/packages/create-astro/src/actions/context.ts
+++ b/packages/create-astro/src/actions/context.ts
@@ -52,7 +52,7 @@ export async function getContext(argv: string[]): Promise<Context> {
 
 	const pkgManager = detectPackageManager()?.name ?? 'npm';
 	const [username, version] = await Promise.all([getName(), getVersion()]);
-	let cwd = flags['_'][0] as string;
+	let cwd = flags['_'][0];
 	let {
 		'--help': help = false,
 		'--template': template,
diff --git a/packages/create-astro/src/actions/git.ts b/packages/create-astro/src/actions/git.ts
index 075c13330..00c42dae5 100644
--- a/packages/create-astro/src/actions/git.ts
+++ b/packages/create-astro/src/actions/git.ts
@@ -31,7 +31,6 @@ export async function git(ctx: Pick<Context, 'cwd' | 'git' | 'yes' | 'prompt' |
 			end: 'Git initialized',
 			while: () =>
 				init({ cwd: ctx.cwd }).catch((e) => {
-					// eslint-disable-next-line no-console
 					error('error', e);
 					process.exit(1);
 				}),
diff --git a/packages/create-astro/src/actions/template.ts b/packages/create-astro/src/actions/template.ts
index 85b7d6f27..f762b264f 100644
--- a/packages/create-astro/src/actions/template.ts
+++ b/packages/create-astro/src/actions/template.ts
@@ -1,4 +1,3 @@
-/* eslint no-console: 'off' */
 import type { Context } from './context';
 
 import { color } from '@astrojs/cli-kit';
@@ -34,7 +33,6 @@ export async function template(ctx: Pick<Context, 'template' | 'prompt' | 'dryRu
 			end: 'Template copied',
 			while: () =>
 				copyTemplate(ctx.template!, ctx as Context).catch((e) => {
-					// eslint-disable-next-line no-console
 					if (e instanceof Error) {
 						error('error', e.message);
 						process.exit(1);
diff --git a/packages/create-astro/src/actions/typescript.ts b/packages/create-astro/src/actions/typescript.ts
index 5e118cb38..8c0e2716c 100644
--- a/packages/create-astro/src/actions/typescript.ts
+++ b/packages/create-astro/src/actions/typescript.ts
@@ -63,7 +63,6 @@ export async function typescript(
 			end: 'TypeScript customized',
 			while: () =>
 				setupTypeScript(ts!, { cwd: ctx.cwd }).catch((e) => {
-					// eslint-disable-next-line no-console
 					error('error', e);
 					process.exit(1);
 				}),
diff --git a/packages/create-astro/src/messages.ts b/packages/create-astro/src/messages.ts
index 40700a704..a69c43ce8 100644
--- a/packages/create-astro/src/messages.ts
+++ b/packages/create-astro/src/messages.ts
@@ -64,11 +64,11 @@ export const welcome = [
 
 export const getName = () =>
 	new Promise<string>((resolve) => {
-		exec('git config user.name', { encoding: 'utf-8' }, (_1, gitName, _2) => {
+		exec('git config user.name', { encoding: 'utf-8' }, (_1, gitName) => {
 			if (gitName.trim()) {
 				return resolve(gitName.split(' ')[0].trim());
 			}
-			exec('whoami', { encoding: 'utf-8' }, (_3, whoami, _4) => {
+			exec('whoami', { encoding: 'utf-8' }, (_3, whoami) => {
 				if (whoami.trim()) {
 					return resolve(whoami.split(' ')[0].trim());
 				}
diff --git a/packages/integrations/cloudflare/src/index.ts b/packages/integrations/cloudflare/src/index.ts
index 298d798fb..3dc237b72 100644
--- a/packages/integrations/cloudflare/src/index.ts
+++ b/packages/integrations/cloudflare/src/index.ts
@@ -93,7 +93,7 @@ export default function createIntegration(args?: Options): AstroIntegration {
 					vite.ssr.target = 'webworker';
 				}
 			},
-			'astro:build:ssr': ({ manifest, entryPoints }) => {
+			'astro:build:ssr': ({ entryPoints }) => {
 				_entryPoints = entryPoints;
 			},
 			'astro:build:done': async ({ pages, routes, dir }) => {
@@ -138,7 +138,7 @@ export default function createIntegration(args?: Options): AstroIntegration {
 						const fileName = entryPointsRouteData[index].component
 							.replace('src/pages/', '')
 							.replace('.astro', '.js')
-							.replace(/(\[\.\.\.)(\w+)(\])/g, (_match, _p1, p2, _p3) => {
+							.replace(/(\[\.\.\.)(\w+)(\])/g, (_match, _p1, p2) => {
 								return `[[${p2}]]`;
 							});
 
diff --git a/packages/integrations/cloudflare/test/test-utils.js b/packages/integrations/cloudflare/test/test-utils.js
index 6216e677c..e0fc90a64 100644
--- a/packages/integrations/cloudflare/test/test-utils.js
+++ b/packages/integrations/cloudflare/test/test-utils.js
@@ -37,7 +37,6 @@ export function runCLI(basePath, { silent, port = 8787 }) {
 		(async function () {
 			for (const msg of p.stderr) {
 				if (!silent) {
-					// eslint-disable-next-line
 					console.error(msg);
 				}
 			}
@@ -45,7 +44,6 @@ export function runCLI(basePath, { silent, port = 8787 }) {
 
 		for await (const msg of p.stdout) {
 			if (!silent) {
-				// eslint-disable-next-line
 				console.log(msg);
 			}
 			if (msg.includes(`Listening on`)) {
diff --git a/packages/integrations/deno/src/index.ts b/packages/integrations/deno/src/index.ts
index 8b1f38959..93e51289b 100644
--- a/packages/integrations/deno/src/index.ts
+++ b/packages/integrations/deno/src/index.ts
@@ -95,7 +95,7 @@ export function getAdapter(args?: Options): AstroAdapter {
 const denoImportsShimPlugin = {
 	name: '@astrojs/deno:shim',
 	setup(build: esbuild.PluginBuild) {
-		build.onLoad({ filter: /__deno_imports\.js$/ }, async (args) => {
+		build.onLoad({ filter: /__deno_imports\.js$/ }, async () => {
 			return {
 				contents: DENO_IMPORTS,
 				loader: 'js',
diff --git a/packages/integrations/deno/src/server.ts b/packages/integrations/deno/src/server.ts
index 08d967065..90a4a1237 100644
--- a/packages/integrations/deno/src/server.ts
+++ b/packages/integrations/deno/src/server.ts
@@ -93,7 +93,6 @@ export function start(manifest: SSRManifest, options: Options) {
 	});
 
 	_startPromise = Promise.resolve(_server.listenAndServe());
-	// eslint-disable-next-line no-console
 	console.error(`Server running on port ${port}`);
 }
 
diff --git a/packages/integrations/deno/test/basics.test.ts b/packages/integrations/deno/test/basics.test.ts
index 9e4174506..5d3f116dd 100644
--- a/packages/integrations/deno/test/basics.test.ts
+++ b/packages/integrations/deno/test/basics.test.ts
@@ -1,3 +1,5 @@
+/* Deno types consider DOM elements nullable */
+/* eslint-disable @typescript-eslint/no-unnecessary-type-assertion */
 import { DOMParser } from 'https://deno.land/x/deno_dom@v0.1.35-alpha/deno-dom-wasm.ts';
 import { assert, assertEquals } from 'https://deno.land/std@0.158.0/testing/asserts.ts';
 import { runBuildAndStartApp, defaultTestPermissions } from './helpers.ts';
diff --git a/packages/integrations/deno/test/dynamic-import.test.ts b/packages/integrations/deno/test/dynamic-import.test.ts
index 987aac9ff..aa9d44c67 100644
--- a/packages/integrations/deno/test/dynamic-import.test.ts
+++ b/packages/integrations/deno/test/dynamic-import.test.ts
@@ -1,3 +1,5 @@
+/* Deno types consider DOM elements nullable */
+/* eslint-disable @typescript-eslint/no-unnecessary-type-assertion */
 import { DOMParser } from 'https://deno.land/x/deno_dom@v0.1.35-alpha/deno-dom-wasm.ts';
 import { assert, assertEquals } from 'https://deno.land/std@0.158.0/testing/asserts.ts';
 import { runBuildAndStartAppFromSubprocess } from './helpers.ts';
diff --git a/packages/integrations/image/src/build/ssg.ts b/packages/integrations/image/src/build/ssg.ts
index 2a6976d76..4a6d84d53 100644
--- a/packages/integrations/image/src/build/ssg.ts
+++ b/packages/integrations/image/src/build/ssg.ts
@@ -162,7 +162,6 @@ export async function ssgBuild({
 		}
 
 		if (!inputBuffer) {
-			// eslint-disable-next-line no-console
 			warn({ level: logLevel, message: `"${src}" image could not be fetched` });
 			return;
 		}
diff --git a/packages/integrations/image/src/lib/get-image.ts b/packages/integrations/image/src/lib/get-image.ts
index d6aae4665..37f6a3bc4 100644
--- a/packages/integrations/image/src/lib/get-image.ts
+++ b/packages/integrations/image/src/lib/get-image.ts
@@ -1,10 +1,5 @@
 /// <reference types="astro/astro-jsx" />
-import type {
-	ColorDefinition,
-	ImageService,
-	OutputFormat,
-	TransformOptions,
-} from '../loaders/index.js';
+import type { ImageService, OutputFormat, TransformOptions } from '../loaders/index.js';
 import { isSSRService, parseAspectRatio } from '../loaders/index.js';
 import { isRemoteImage } from '../utils/paths.js';
 import type { ImageMetadata } from '../vite-plugin-astro-image.js';
@@ -91,7 +86,7 @@ async function resolveTransform(input: GetImageTransform): Promise<TransformOpti
 		height,
 		aspectRatio,
 		format: format as OutputFormat,
-		background: background as ColorDefinition | undefined,
+		background,
 	};
 }
 
diff --git a/packages/integrations/image/src/loaders/squoosh.ts b/packages/integrations/image/src/loaders/squoosh.ts
index b91b05be0..16eed032a 100644
--- a/packages/integrations/image/src/loaders/squoosh.ts
+++ b/packages/integrations/image/src/loaders/squoosh.ts
@@ -35,7 +35,7 @@ class SquooshService extends BaseSSRService {
 		};
 	}
 
-	async processPng(image: any, transform: TransformOptions) {
+	async processPng(image: any) {
 		await image.encode({ oxipng: {} });
 		const data = await image.encodedWith.oxipng;
 
diff --git a/packages/integrations/image/src/utils/colornames.ts b/packages/integrations/image/src/utils/colornames.ts
index 806e55f31..897ada1e5 100644
--- a/packages/integrations/image/src/utils/colornames.ts
+++ b/packages/integrations/image/src/utils/colornames.ts
@@ -70,7 +70,6 @@ export type NamedColor =
 	| 'lightgreen'
 	| 'lightpink'
 	| 'lightsalmon'
-	| 'lightsalmon'
 	| 'lightseagreen'
 	| 'lightskyblue'
 	| 'lightslategray'
@@ -87,7 +86,6 @@ export type NamedColor =
 	| 'mediumpurple'
 	| 'mediumseagreen'
 	| 'mediumslateblue'
-	| 'mediumslateblue'
 	| 'mediumspringgreen'
 	| 'mediumturquoise'
 	| 'mediumvioletred'
diff --git a/packages/integrations/image/src/vendor/squoosh/codecs.ts b/packages/integrations/image/src/vendor/squoosh/codecs.ts
index eb83df97d..aa751387e 100644
--- a/packages/integrations/image/src/vendor/squoosh/codecs.ts
+++ b/packages/integrations/image/src/vendor/squoosh/codecs.ts
@@ -287,7 +287,6 @@ export const codecs = {
   avif: {
     name: 'AVIF',
     extension: 'avif',
-    // eslint-disable-next-line no-control-regex
     detectors: [/^\x00\x00\x00 ftypavif\x00\x00\x00\x00/],
     dec: () =>
       instantiateEmscriptenWasm(avifDec as DecodeModuleFactory, avifDecWasm),
@@ -318,7 +317,6 @@ export const codecs = {
   oxipng: {
     name: 'OxiPNG',
     extension: 'png',
-    // eslint-disable-next-line no-control-regex
     detectors: [/^\x89PNG\x0D\x0A\x1A\x0A/],
     dec: async () => {
       await pngEncDecInit()
diff --git a/packages/integrations/image/src/vendor/squoosh/image.ts b/packages/integrations/image/src/vendor/squoosh/image.ts
index aad4fb598..c8862f0c4 100644
--- a/packages/integrations/image/src/vendor/squoosh/image.ts
+++ b/packages/integrations/image/src/vendor/squoosh/image.ts
@@ -29,14 +29,14 @@ export async function processBuffer(
 
 	switch (encoding) {
 		case 'avif':
-			return await impl.encodeAvif(imageData, { quality }) as Uint8Array;
+			return await impl.encodeAvif(imageData, { quality });
 		case 'jpeg':
 		case 'jpg':
-			return await impl.encodeJpeg(imageData, { quality }) as Uint8Array;
+			return await impl.encodeJpeg(imageData, { quality });
 		case 'png':
-			return await impl.encodePng(imageData) as Uint8Array;
+			return await impl.encodePng(imageData);
 		case 'webp':
-			return await impl.encodeWebp(imageData, { quality }) as Uint8Array;
+			return await impl.encodeWebp(imageData, { quality });
 		default:
 			throw Error(`Unsupported encoding format`)
 	}
diff --git a/packages/integrations/image/test/background-color-image-ssg.test.js b/packages/integrations/image/test/background-color-image-ssg.test.js
index 6c4423615..ea55d7ae1 100644
--- a/packages/integrations/image/test/background-color-image-ssg.test.js
+++ b/packages/integrations/image/test/background-color-image-ssg.test.js
@@ -50,7 +50,7 @@ describe('SSG image with background - dev', function () {
 		it(title, async () => {
 			const image = $(id);
 			const src = image.attr('src');
-			const [_, params] = src.split('?');
+			const [, params] = src.split('?');
 			const searchParams = new URLSearchParams(params);
 			expect(searchParams.get('bg')).to.equal(bg);
 		});
diff --git a/packages/integrations/image/test/background-color-image-ssr.test.js b/packages/integrations/image/test/background-color-image-ssr.test.js
index 6bc5f333f..66b512e30 100644
--- a/packages/integrations/image/test/background-color-image-ssr.test.js
+++ b/packages/integrations/image/test/background-color-image-ssr.test.js
@@ -104,7 +104,7 @@ describe('SSR image with background', function () {
 
 			const image = $(id);
 			const src = image.attr('src');
-			const [_, params] = src.split('?');
+			const [, params] = src.split('?');
 
 			const searchParams = new URLSearchParams(params);
 
diff --git a/packages/integrations/image/test/test-utils.js b/packages/integrations/image/test/test-utils.js
index e6c22e0ab..122e90132 100644
--- a/packages/integrations/image/test/test-utils.js
+++ b/packages/integrations/image/test/test-utils.js
@@ -1,8 +1,7 @@
 import { loadFixture as baseLoadFixture } from '../../../astro/test/test-utils.js';
 
 export function loadFixture(inlineConfig) {
-	if (!inlineConfig || !inlineConfig.root)
-		throw new Error("Must provide { root: './fixtures/...' }");
+	if (!inlineConfig?.root) throw new Error("Must provide { root: './fixtures/...' }");
 
 	// resolve the relative root (i.e. "./fixtures/tailwindcss") to a full filepath
 	// without this, the main `loadFixture` helper will resolve relative to `packages/astro/test`
diff --git a/packages/integrations/lit/client-shim.js b/packages/integrations/lit/client-shim.js
index a798dba4d..bf45dd912 100644
--- a/packages/integrations/lit/client-shim.js
+++ b/packages/integrations/lit/client-shim.js
@@ -17,6 +17,6 @@ const polyfillCheckEl = new DOMParser()
 	)
 	.querySelector('p');
 
-if (!polyfillCheckEl || !polyfillCheckEl.shadowRoot) {
+if (!polyfillCheckEl?.shadowRoot) {
 	polyfill();
 }
diff --git a/packages/integrations/lit/server.js b/packages/integrations/lit/server.js
index d4ca4e08f..d71ccee47 100644
--- a/packages/integrations/lit/server.js
+++ b/packages/integrations/lit/server.js
@@ -17,10 +17,10 @@ function getCustomElementConstructor(name) {
 
 async function isLitElement(Component) {
 	const Ctr = getCustomElementConstructor(Component);
-	return !!(Ctr && Ctr._$litElement$);
+	return !!Ctr?._$litElement$;
 }
 
-async function check(Component, _props, _children) {
+async function check(Component) {
 	// Lit doesn't support getting a tagName from a Constructor at this time.
 	// So this must be a string at the moment.
 	return !!(await isLitElement(Component));
diff --git a/packages/integrations/markdoc/src/content-entry-type.ts b/packages/integrations/markdoc/src/content-entry-type.ts
index 097c5cfae..2bae5402c 100644
--- a/packages/integrations/markdoc/src/content-entry-type.ts
+++ b/packages/integrations/markdoc/src/content-entry-type.ts
@@ -1,4 +1,3 @@
-/* eslint-disable no-console */
 import type { Config as MarkdocConfig, Node } from '@markdoc/markdoc';
 import Markdoc from '@markdoc/markdoc';
 import type { AstroConfig, ContentEntryType } from 'astro';
diff --git a/packages/integrations/markdoc/src/extensions/shiki.ts b/packages/integrations/markdoc/src/extensions/shiki.ts
index 34f79779f..1229a09fb 100644
--- a/packages/integrations/markdoc/src/extensions/shiki.ts
+++ b/packages/integrations/markdoc/src/extensions/shiki.ts
@@ -87,7 +87,6 @@ export default async function shiki({
 						if (langExists) {
 							lang = attributes.language;
 						} else {
-							// eslint-disable-next-line no-console
 							console.warn(
 								`[Shiki highlighter] The language "${attributes.language}" doesn't exist, falling back to plaintext.`
 							);
diff --git a/packages/integrations/markdoc/src/index.ts b/packages/integrations/markdoc/src/index.ts
index 60dd01843..f0d5a8a33 100644
--- a/packages/integrations/markdoc/src/index.ts
+++ b/packages/integrations/markdoc/src/index.ts
@@ -1,8 +1,6 @@
 /* eslint-disable no-console */
 import type { AstroConfig, AstroIntegration, ContentEntryType, HookParameters } from 'astro';
 import { bold, red } from 'kleur/colors';
-import { fileURLToPath } from 'node:url';
-import { normalizePath } from 'vite';
 import { getContentEntryType } from './content-entry-type.js';
 import {
 	loadMarkdocConfig,
@@ -26,7 +24,6 @@ export default function markdocIntegration(legacyConfig?: any): AstroIntegration
 		process.exit(0);
 	}
 	let markdocConfigResult: MarkdocConfigResult | undefined;
-	let markdocConfigResultId = '';
 	let astroConfig: AstroConfig;
 	return {
 		name: '@astrojs/markdoc',
@@ -36,9 +33,6 @@ export default function markdocIntegration(legacyConfig?: any): AstroIntegration
 				astroConfig = params.config;
 
 				markdocConfigResult = await loadMarkdocConfig(astroConfig);
-				if (markdocConfigResult) {
-					markdocConfigResultId = normalizePath(fileURLToPath(markdocConfigResult.fileUrl));
-				}
 
 				addContentEntryType(await getContentEntryType({ markdocConfigResult, astroConfig }));
 
diff --git a/packages/integrations/markdoc/src/load-config.ts b/packages/integrations/markdoc/src/load-config.ts
index 207749251..23a397e47 100644
--- a/packages/integrations/markdoc/src/load-config.ts
+++ b/packages/integrations/markdoc/src/load-config.ts
@@ -30,7 +30,7 @@ export async function loadMarkdocConfig(
 	}
 	if (!markdocConfigUrl) return;
 
-	const { code, dependencies } = await bundleConfigFile({
+	const { code } = await bundleConfigFile({
 		markdocConfigUrl,
 		astroConfig,
 	});
diff --git a/packages/integrations/markdoc/src/utils.ts b/packages/integrations/markdoc/src/utils.ts
index 1fd896d52..3f2aed633 100644
--- a/packages/integrations/markdoc/src/utils.ts
+++ b/packages/integrations/markdoc/src/utils.ts
@@ -15,7 +15,7 @@ export class MarkdocError extends Error {
 	constructor(props: ErrorProperties, ...params: any) {
 		super(...params);
 
-		const { name, title = 'MarkdocError', message, stack, location, hint, frame } = props;
+		const { title = 'MarkdocError', message, stack, location, hint, frame } = props;
 
 		this.title = title;
 		if (message) this.message = message;
diff --git a/packages/integrations/mdx/src/plugins.ts b/packages/integrations/mdx/src/plugins.ts
index 94c3c10ba..ed03f4b2b 100644
--- a/packages/integrations/mdx/src/plugins.ts
+++ b/packages/integrations/mdx/src/plugins.ts
@@ -33,7 +33,7 @@ export function recmaInjectImportMetaEnvPlugin({
 		estreeVisit(tree, (node) => {
 			if (node.type === 'MemberExpression') {
 				// attempt to get "import.meta.env" variable name
-				const envVarName = getImportMetaEnvVariableName(node as MemberExpression);
+				const envVarName = getImportMetaEnvVariableName(node);
 				if (typeof envVarName === 'string') {
 					// clear object keys to replace with envVarLiteral
 					for (const key in node) {
diff --git a/packages/integrations/mdx/src/remark-shiki.ts b/packages/integrations/mdx/src/remark-shiki.ts
index 3f3310de7..83625051e 100644
--- a/packages/integrations/mdx/src/remark-shiki.ts
+++ b/packages/integrations/mdx/src/remark-shiki.ts
@@ -69,7 +69,6 @@ const remarkShiki = async ({ langs = [], theme = 'github-dark', wrap = false }:
 				if (langExists) {
 					lang = node.lang;
 				} else {
-					// eslint-disable-next-line no-console
 					console.warn(`The language "${node.lang}" doesn't exist, falling back to plaintext.`);
 					lang = 'plaintext';
 				}
@@ -77,7 +76,7 @@ const remarkShiki = async ({ langs = [], theme = 'github-dark', wrap = false }:
 				lang = 'plaintext';
 			}
 
-			let html = highlighter!.codeToHtml(node.value, { lang });
+			let html = highlighter.codeToHtml(node.value, { lang });
 
 			// Q: Couldn't these regexes match on a user's inputted code blocks?
 			// A: Nope! All rendered HTML is properly escaped.
diff --git a/packages/integrations/mdx/src/utils.ts b/packages/integrations/mdx/src/utils.ts
index 80f8c3e20..3425c50e3 100644
--- a/packages/integrations/mdx/src/utils.ts
+++ b/packages/integrations/mdx/src/utils.ts
@@ -32,7 +32,7 @@ export function getFileInfo(id: string, config: AstroConfig): FileInfo {
 	const isPage = fileId.includes('/pages/');
 	if (isPage) {
 		fileUrl = fileId.replace(/^.*?\/pages\//, sitePathname).replace(/(\/index)?\.mdx$/, '');
-	} else if (url && url.pathname.startsWith(config.root.pathname)) {
+	} else if (url?.pathname.startsWith(config.root.pathname)) {
 		fileUrl = url.pathname.slice(config.root.pathname.length);
 	} else {
 		fileUrl = fileId;
diff --git a/packages/integrations/mdx/test/mdx-get-headings.test.js b/packages/integrations/mdx/test/mdx-get-headings.test.js
index 1b1987e77..5b415c70f 100644
--- a/packages/integrations/mdx/test/mdx-get-headings.test.js
+++ b/packages/integrations/mdx/test/mdx-get-headings.test.js
@@ -72,7 +72,7 @@ describe('MDX heading IDs can be customized by user plugins', () => {
 				rehypePlugins: [
 					() => (tree) => {
 						let count = 0;
-						visit(tree, 'element', (node, index, parent) => {
+						visit(tree, 'element', (node) => {
 							if (!/^h\d$/.test(node.tagName)) return;
 							if (!node.properties?.id) {
 								node.properties = { ...node.properties, id: String(count++) };
@@ -125,7 +125,7 @@ describe('MDX heading IDs can be injected before user plugins', () => {
 					rehypePlugins: [
 						rehypeHeadingIds,
 						() => (tree) => {
-							visit(tree, 'element', (node, index, parent) => {
+							visit(tree, 'element', (node) => {
 								if (!/^h\d$/.test(node.tagName)) return;
 								if (node.properties?.id) {
 									node.children.push({ type: 'text', value: ' ' + node.properties.id });
diff --git a/packages/integrations/mdx/test/mdx-page.test.js b/packages/integrations/mdx/test/mdx-page.test.js
index 726f091c9..52d10bce3 100644
--- a/packages/integrations/mdx/test/mdx-page.test.js
+++ b/packages/integrations/mdx/test/mdx-page.test.js
@@ -1,5 +1,3 @@
-import mdx from '@astrojs/mdx';
-
 import { expect } from 'chai';
 import { parseHTML } from 'linkedom';
 import { loadFixture } from '../../../astro/test/test-utils.js';
diff --git a/packages/integrations/mdx/test/mdx-plus-react.test.js b/packages/integrations/mdx/test/mdx-plus-react.test.js
index 49c25d558..22d7ca0e7 100644
--- a/packages/integrations/mdx/test/mdx-plus-react.test.js
+++ b/packages/integrations/mdx/test/mdx-plus-react.test.js
@@ -1,5 +1,3 @@
-import mdx from '@astrojs/mdx';
-
 import { expect } from 'chai';
 import { parseHTML } from 'linkedom';
 import { loadFixture } from '../../../astro/test/test-utils.js';
diff --git a/packages/integrations/netlify/test/edge-functions/dynamic-import.test.js b/packages/integrations/netlify/test/edge-functions/dynamic-import.test.js
index febd689b6..bfa895290 100644
--- a/packages/integrations/netlify/test/edge-functions/dynamic-import.test.js
+++ b/packages/integrations/netlify/test/edge-functions/dynamic-import.test.js
@@ -17,7 +17,6 @@ Deno.test({
 			const div = doc.querySelector('#thing');
 			assert(div, 'div exists');
 		} catch (err) {
-			// eslint-disable-next-line no-console
 			console.error(err);
 		} finally {
 			await stop();
diff --git a/packages/integrations/netlify/test/edge-functions/root-dynamic.test.ts b/packages/integrations/netlify/test/edge-functions/root-dynamic.test.ts
index 0e38bc46e..3fc2012c3 100644
--- a/packages/integrations/netlify/test/edge-functions/root-dynamic.test.ts
+++ b/packages/integrations/netlify/test/edge-functions/root-dynamic.test.ts
@@ -1,5 +1,5 @@
 import { loadFixture } from './test-utils.ts';
-import { assertEquals, assert, DOMParser } from './deps.ts';
+import { assertEquals } from './deps.ts';
 
 Deno.test({
 	// TODO: debug why build cannot be found in "await import"
diff --git a/packages/integrations/netlify/test/functions/cookies.test.js b/packages/integrations/netlify/test/functions/cookies.test.js
index bc1771512..f15695235 100644
--- a/packages/integrations/netlify/test/functions/cookies.test.js
+++ b/packages/integrations/netlify/test/functions/cookies.test.js
@@ -1,8 +1,6 @@
 import { expect } from 'chai';
-import { load as cheerioLoad } from 'cheerio';
 import { loadFixture, testIntegration } from './test-utils.js';
 import netlifyAdapter from '../../dist/index.js';
-import { fileURLToPath } from 'url';
 
 describe('Cookies', () => {
 	/** @type {import('../../../astro/test/test-utils').Fixture} */
diff --git a/packages/integrations/netlify/test/functions/redirects.test.js b/packages/integrations/netlify/test/functions/redirects.test.js
index 767e5b13b..1e20d41a0 100644
--- a/packages/integrations/netlify/test/functions/redirects.test.js
+++ b/packages/integrations/netlify/test/functions/redirects.test.js
@@ -1,8 +1,6 @@
 import { expect } from 'chai';
-import { load as cheerioLoad } from 'cheerio';
 import { loadFixture, testIntegration } from './test-utils.js';
 import netlifyAdapter from '../../dist/index.js';
-import { fileURLToPath } from 'url';
 
 describe('SSG - Redirects', () => {
 	/** @type {import('../../../astro/test/test-utils').Fixture} */
diff --git a/packages/integrations/node/src/http-server.ts b/packages/integrations/node/src/http-server.ts
index 8d463ba6f..2b0252c6e 100644
--- a/packages/integrations/node/src/http-server.ts
+++ b/packages/integrations/node/src/http-server.ts
@@ -46,7 +46,6 @@ export function createServer(
 
 			stream.on('error', (err) => {
 				if (forwardError) {
-					// eslint-disable-next-line no-console
 					console.error(err.toString());
 					res.writeHead(500);
 					res.end('Internal server error');
diff --git a/packages/integrations/node/src/response-iterator.ts b/packages/integrations/node/src/response-iterator.ts
index f8941460b..01624d81d 100644
--- a/packages/integrations/node/src/response-iterator.ts
+++ b/packages/integrations/node/src/response-iterator.ts
@@ -29,8 +29,7 @@ const canUseAsyncIteratorSymbol = canUseSymbol && Symbol.asyncIterator;
 
 function isBuffer(value: any): value is Buffer {
 	return (
-		value != null &&
-		value.constructor != null &&
+		value?.constructor != null &&
 		typeof value.constructor.isBuffer === 'function' &&
 		value.constructor.isBuffer(value)
 	);
diff --git a/packages/integrations/node/test/node-middleware.test.js b/packages/integrations/node/test/node-middleware.test.js
index e96d29ed4..a658f93ef 100644
--- a/packages/integrations/node/test/node-middleware.test.js
+++ b/packages/integrations/node/test/node-middleware.test.js
@@ -1,5 +1,5 @@
 import nodejs from '../dist/index.js';
-import { loadFixture, createRequestAndResponse } from './test-utils.js';
+import { loadFixture } from './test-utils.js';
 import { expect } from 'chai';
 import * as cheerio from 'cheerio';
 
diff --git a/packages/integrations/node/test/test-utils.js b/packages/integrations/node/test/test-utils.js
index 13e32a5e8..741564914 100644
--- a/packages/integrations/node/test/test-utils.js
+++ b/packages/integrations/node/test/test-utils.js
@@ -7,8 +7,7 @@ import { loadFixture as baseLoadFixture } from '../../../astro/test/test-utils.j
  */
 
 export function loadFixture(inlineConfig) {
-	if (!inlineConfig || !inlineConfig.root)
-		throw new Error("Must provide { root: './fixtures/...' }");
+	if (!inlineConfig?.root) throw new Error("Must provide { root: './fixtures/...' }");
 
 	// resolve the relative root (i.e. "./fixtures/tailwindcss") to a full filepath
 	// without this, the main `loadFixture` helper will resolve relative to `packages/astro/test`
diff --git a/packages/integrations/partytown/src/index.ts b/packages/integrations/partytown/src/index.ts
index 97badee1b..758756a31 100644
--- a/packages/integrations/partytown/src/index.ts
+++ b/packages/integrations/partytown/src/index.ts
@@ -1,7 +1,7 @@
 import type { PartytownConfig } from '@builder.io/partytown/integration';
 import { partytownSnippet } from '@builder.io/partytown/integration';
 import { copyLibFiles, libDirPath } from '@builder.io/partytown/utils';
-import type { AstroConfig, AstroIntegration } from 'astro';
+import type { AstroIntegration } from 'astro';
 import * as fs from 'fs';
 import { createRequire } from 'module';
 import path from 'path';
@@ -18,7 +18,6 @@ function appendForwardSlash(str: string) {
 }
 
 export default function createPlugin(options?: PartytownOptions): AstroIntegration {
-	let config: AstroConfig;
 	let partytownSnippetHtml: string;
 	const partytownEntrypoint = resolve('@builder.io/partytown/package.json');
 	const partytownLibDirectory = path.resolve(partytownEntrypoint, '../lib');
@@ -35,9 +34,6 @@ export default function createPlugin(options?: PartytownOptions): AstroIntegrati
 				partytownSnippetHtml = partytownSnippet(partytownConfig);
 				injectScript('head-inline', partytownSnippetHtml);
 			},
-			'astro:config:done': ({ config: _config }) => {
-				config = _config;
-			},
 			'astro:server:setup': ({ server }) => {
 				const lib = `/~partytown/`;
 				server.middlewares.use(
diff --git a/packages/integrations/partytown/src/sirv.ts b/packages/integrations/partytown/src/sirv.ts
index 78489d2ac..8e04fc85c 100644
--- a/packages/integrations/partytown/src/sirv.ts
+++ b/packages/integrations/partytown/src/sirv.ts
@@ -40,8 +40,8 @@ import { URL } from 'url';
 const noop = () => {};
 
 function isMatch(uri, arr) {
-	for (let i = 0; i < arr.length; i++) {
-		if (arr[i].test(uri)) return true;
+	for (const candidate of arr) {
+		if (candidate.test(uri)) return true;
 	}
 }
 
diff --git a/packages/integrations/preact/src/client.ts b/packages/integrations/preact/src/client.ts
index 9ef6b2caf..f90614398 100644
--- a/packages/integrations/preact/src/client.ts
+++ b/packages/integrations/preact/src/client.ts
@@ -2,7 +2,7 @@ import { h, render, type JSX } from 'preact';
 import StaticHtml from './static-html.js';
 import type { SignalLike } from './types';
 
-const sharedSignalMap: Map<string, SignalLike> = new Map();
+const sharedSignalMap = new Map<string, SignalLike>();
 
 export default (element: HTMLElement) =>
 	async (
@@ -17,7 +17,7 @@ export default (element: HTMLElement) =>
 		let signalsRaw = element.dataset.preactSignals;
 		if (signalsRaw) {
 			const { signal } = await import('@preact/signals');
-			let signals: Record<string, string> = JSON.parse(element.dataset.preactSignals as string);
+			let signals: Record<string, string> = JSON.parse(element.dataset.preactSignals!);
 			for (const [propName, signalId] of Object.entries(signals)) {
 				if (!sharedSignalMap.has(signalId)) {
 					const signalValue = signal(props[propName]);
diff --git a/packages/integrations/preact/src/server.ts b/packages/integrations/preact/src/server.ts
index 9efd6017f..6a2ceb612 100644
--- a/packages/integrations/preact/src/server.ts
+++ b/packages/integrations/preact/src/server.ts
@@ -101,11 +101,9 @@ function useConsoleFilter() {
 	consoleFilterRefs++;
 
 	if (!originalConsoleError) {
-		// eslint-disable-next-line no-console
 		originalConsoleError = console.error;
 
 		try {
-			// eslint-disable-next-line no-console
 			console.error = filteredConsoleError;
 		} catch (error) {
 			// If we're unable to hook `console.error`, just accept it
diff --git a/packages/integrations/prefetch/test/test-utils.js b/packages/integrations/prefetch/test/test-utils.js
index 198ecaafa..0b5de1f9d 100644
--- a/packages/integrations/prefetch/test/test-utils.js
+++ b/packages/integrations/prefetch/test/test-utils.js
@@ -2,8 +2,7 @@ import { test as testBase } from '@playwright/test';
 import { loadFixture as baseLoadFixture } from '../../../astro/test/test-utils.js';
 
 export function loadFixture(inlineConfig) {
-	if (!inlineConfig || !inlineConfig.root)
-		throw new Error("Must provide { root: './fixtures/...' }");
+	if (!inlineConfig?.root) throw new Error("Must provide { root: './fixtures/...' }");
 
 	// resolve the relative root (i.e. "./fixtures/tailwindcss") to a full filepath
 	// without this, the main `loadFixture` helper will resolve relative to `packages/astro/test`
diff --git a/packages/integrations/react/server-v17.js b/packages/integrations/react/server-v17.js
index 522837a16..5638c6fb7 100644
--- a/packages/integrations/react/server-v17.js
+++ b/packages/integrations/react/server-v17.js
@@ -17,8 +17,7 @@ function check(Component, props, children) {
 	// Note: there are packages that do some unholy things to create "components".
 	// Checking the $$typeof property catches most of these patterns.
 	if (typeof Component === 'object') {
-		const $$typeof = Component['$$typeof'];
-		return $$typeof && $$typeof.toString().slice('Symbol('.length).startsWith('react');
+		return Component['$$typeof']?.toString().slice('Symbol('.length).startsWith('react');
 	}
 	if (typeof Component !== 'function') return false;
 
@@ -73,7 +72,7 @@ function renderToStaticMarkup(Component, props, { default: children, ...slotted
 	}
 	const vnode = React.createElement(Component, newProps);
 	let html;
-	if (metadata && metadata.hydrate) {
+	if (metadata?.hydrate) {
 		html = ReactDOM.renderToString(vnode);
 	} else {
 		html = ReactDOM.renderToStaticMarkup(vnode);
diff --git a/packages/integrations/react/server.js b/packages/integrations/react/server.js
index b6829e338..8c02c4b26 100644
--- a/packages/integrations/react/server.js
+++ b/packages/integrations/react/server.js
@@ -18,8 +18,7 @@ async function check(Component, props, children) {
 	// Note: there are packages that do some unholy things to create "components".
 	// Checking the $$typeof property catches most of these patterns.
 	if (typeof Component === 'object') {
-		const $$typeof = Component['$$typeof'];
-		return $$typeof && $$typeof.toString().slice('Symbol('.length).startsWith('react');
+		return Component['$$typeof'].toString().slice('Symbol('.length).startsWith('react');
 	}
 	if (typeof Component !== 'function') return false;
 
@@ -97,7 +96,7 @@ async function renderToStaticMarkup(Component, props, { default: children, ...sl
 		identifierPrefix: prefix,
 	};
 	let html;
-	if (metadata && metadata.hydrate) {
+	if (metadata?.hydrate) {
 		if ('renderToReadableStream' in ReactDOM) {
 			html = await renderToReadableStreamAsync(vnode, renderOptions);
 		} else {
diff --git a/packages/integrations/sitemap/src/config-defaults.ts b/packages/integrations/sitemap/src/config-defaults.ts
index fbcd6263d..3d56483e1 100644
--- a/packages/integrations/sitemap/src/config-defaults.ts
+++ b/packages/integrations/sitemap/src/config-defaults.ts
@@ -1,5 +1,5 @@
 import type { SitemapOptions } from './index.js';
 
-export const SITEMAP_CONFIG_DEFAULTS: SitemapOptions & any = {
+export const SITEMAP_CONFIG_DEFAULTS = {
 	entryLimit: 45000,
-};
+} satisfies SitemapOptions;
diff --git a/packages/integrations/sitemap/src/index.ts b/packages/integrations/sitemap/src/index.ts
index 13df4d1ae..950646247 100644
--- a/packages/integrations/sitemap/src/index.ts
+++ b/packages/integrations/sitemap/src/index.ts
@@ -79,7 +79,6 @@ const createPlugin = (options?: SitemapOptions): AstroIntegration => {
 					if (config.site) {
 						finalSiteUrl = new URL(config.base, config.site);
 					} else {
-						// eslint-disable-next-line no-console
 						console.warn(
 							'The Sitemap integration requires the `site` astro.config option. Skipping.'
 						);
diff --git a/packages/integrations/sitemap/test/test-utils.js b/packages/integrations/sitemap/test/test-utils.js
index 31d40de9e..bf101e405 100644
--- a/packages/integrations/sitemap/test/test-utils.js
+++ b/packages/integrations/sitemap/test/test-utils.js
@@ -6,8 +6,7 @@ import * as xml2js from 'xml2js';
  */
 
 export function loadFixture(inlineConfig) {
-	if (!inlineConfig || !inlineConfig.root)
-		throw new Error("Must provide { root: './fixtures/...' }");
+	if (!inlineConfig?.root) throw new Error("Must provide { root: './fixtures/...' }");
 
 	// resolve the relative root (i.e. "./fixtures/tailwindcss") to a full filepath
 	// without this, the main `loadFixture` helper will resolve relative to `packages/astro/test`
diff --git a/packages/integrations/solid/src/dependencies.ts b/packages/integrations/solid/src/dependencies.ts
index ebe5e2a0a..6b98aeb3a 100644
--- a/packages/integrations/solid/src/dependencies.ts
+++ b/packages/integrations/solid/src/dependencies.ts
@@ -18,8 +18,7 @@ export async function getSolidPkgsConfig(isBuild: boolean, astroConfig: AstroCon
 // License: MIT (https://github.com/solidjs/vite-plugin-solid/blob/5558486b0c63788e1275244256918f80294a8338/package.json#L38)
 function containsSolidField(fields: Record<string, any>) {
 	const keys = Object.keys(fields);
-	for (let i = 0; i < keys.length; i++) {
-		const key = keys[i];
+	for (const key of keys) {
 		if (key === 'solid') return true;
 		if (typeof fields[key] === 'object' && fields[key] != null && containsSolidField(fields[key]))
 			return true;
diff --git a/packages/integrations/vercel/src/image/build-service.ts b/packages/integrations/vercel/src/image/build-service.ts
index 23cd664a2..973ceb22a 100644
--- a/packages/integrations/vercel/src/image/build-service.ts
+++ b/packages/integrations/vercel/src/image/build-service.ts
@@ -4,7 +4,7 @@ import { isESMImportedImage, sharedValidateOptions } from './shared';
 const service: ExternalImageService = {
 	validateOptions: (options, serviceOptions) =>
 		sharedValidateOptions(options, serviceOptions, 'production'),
-	getHTMLAttributes(options, serviceOptions) {
+	getHTMLAttributes(options) {
 		const { inputtedWidth, ...props } = options;
 
 		// If `validateOptions` returned a different width than the one of the image, use it for attributes
@@ -39,7 +39,7 @@ const service: ExternalImageService = {
 			decoding: attributes.decoding ?? 'async',
 		};
 	},
-	getURL(options, serviceOptions) {
+	getURL(options) {
 		const fileSrc =
 			typeof options.src === 'string' ? options.src : removeLeadingForwardSlash(options.src.src);
 
diff --git a/packages/integrations/vercel/src/serverless/request-transform.ts b/packages/integrations/vercel/src/serverless/request-transform.ts
index 819b8e8fe..31aa377af 100644
--- a/packages/integrations/vercel/src/serverless/request-transform.ts
+++ b/packages/integrations/vercel/src/serverless/request-transform.ts
@@ -103,7 +103,7 @@ export async function getRequest(
 ): Promise<Request> {
 	let headers = req.headers as Record<string, string>;
 	let request = new Request(base + req.url, {
-		// @ts-expect-error
+		// @ts-expect-error -- duplex does exist in Vercel requests
 		duplex: 'half',
 		method: req.method,
 		headers,
diff --git a/packages/integrations/vue/test/test-utils.js b/packages/integrations/vue/test/test-utils.js
index 2475944be..512fe28dc 100644
--- a/packages/integrations/vue/test/test-utils.js
+++ b/packages/integrations/vue/test/test-utils.js
@@ -5,8 +5,7 @@ import { loadFixture as baseLoadFixture } from '../../../astro/test/test-utils.j
  */
 
 export function loadFixture(inlineConfig) {
-	if (!inlineConfig || !inlineConfig.root)
-		throw new Error("Must provide { root: './fixtures/...' }");
+	if (!inlineConfig?.root) throw new Error("Must provide { root: './fixtures/...' }");
 
 	// resolve the relative root (i.e. "./fixtures/tailwindcss") to a full filepath
 	// without this, the main `loadFixture` helper will resolve relative to `packages/astro/test`
diff --git a/packages/markdown/component/test/astro-markdown.test.js b/packages/markdown/component/test/astro-markdown.test.js
index 21c839b34..72546802f 100644
--- a/packages/markdown/component/test/astro-markdown.test.js
+++ b/packages/markdown/component/test/astro-markdown.test.js
@@ -1,6 +1,6 @@
 import { expect } from 'chai';
 import * as cheerio from 'cheerio';
-import { loadFixture, fixLineEndings } from './test-utils.js';
+import { loadFixture } from './test-utils.js';
 
 describe('Astro Markdown', () => {
 	let fixture;
diff --git a/packages/markdown/remark/src/index.ts b/packages/markdown/remark/src/index.ts
index 0a21e1c98..aa02f8ea9 100644
--- a/packages/markdown/remark/src/index.ts
+++ b/packages/markdown/remark/src/index.ts
@@ -147,7 +147,7 @@ export async function renderMarkdown(
 
 function prefixError(err: any, prefix: string) {
 	// If the error is an object with a `message` property, attempt to prefix the message
-	if (err && err.message) {
+	if (err?.message) {
 		try {
 			err.message = `${prefix}:\n${err.message}`;
 			return err;
@@ -160,9 +160,8 @@ function prefixError(err: any, prefix: string) {
 	const wrappedError = new Error(`${prefix}${err ? `: ${err}` : ''}`);
 	try {
 		wrappedError.stack = err.stack;
-		// @ts-expect-error
 		wrappedError.cause = err;
-	} catch (error) {
+	} catch {
 		// It's ok if we could not set the stack or cause - the message is the most important part
 	}
 
diff --git a/packages/markdown/remark/src/rehype-collect-headings.ts b/packages/markdown/remark/src/rehype-collect-headings.ts
index 9e3c8005e..862400545 100644
--- a/packages/markdown/remark/src/rehype-collect-headings.ts
+++ b/packages/markdown/remark/src/rehype-collect-headings.ts
@@ -20,7 +20,7 @@ export function rehypeHeadingIds(): ReturnType<RehypePlugin> {
 			if (node.type !== 'element') return;
 			const { tagName } = node;
 			if (tagName[0] !== 'h') return;
-			const [_, level] = tagName.match(/h([0-6])/) ?? [];
+			const [, level] = tagName.match(/h([0-6])/) ?? [];
 			if (!level) return;
 			const depth = Number.parseInt(level);
 
diff --git a/packages/markdown/remark/src/remark-prism.ts b/packages/markdown/remark/src/remark-prism.ts
index 80037a3e3..6147d9ee9 100644
--- a/packages/markdown/remark/src/remark-prism.ts
+++ b/packages/markdown/remark/src/remark-prism.ts
@@ -1,6 +1,5 @@
 import { runHighlighterWithAstro } from '@astrojs/prism/dist/highlighter';
 import { visit } from 'unist-util-visit';
-const noVisit = new Set(['root', 'html', 'text']);
 
 type MaybeString = string | null | undefined;
 
diff --git a/packages/markdown/remark/src/remark-shiki.ts b/packages/markdown/remark/src/remark-shiki.ts
index 8035635f9..28e362e34 100644
--- a/packages/markdown/remark/src/remark-shiki.ts
+++ b/packages/markdown/remark/src/remark-shiki.ts
@@ -80,7 +80,7 @@ const remarkShiki = async (
 				lang = 'plaintext';
 			}
 
-			let html = highlighter!.codeToHtml(node.value, { lang });
+			let html = highlighter.codeToHtml(node.value, { lang });
 
 			// Q: Couldn't these regexes match on a user's inputted code blocks?
 			// A: Nope! All rendered HTML is properly escaped.
diff --git a/packages/markdown/remark/tsconfig.json b/packages/markdown/remark/tsconfig.json
index dcf815105..9a8c6d8cb 100644
--- a/packages/markdown/remark/tsconfig.json
+++ b/packages/markdown/remark/tsconfig.json
@@ -3,7 +3,7 @@
   "include": ["src"],
   "compilerOptions": {
     "allowJs": true,
-    "target": "ES2021",
+    "target": "ES2022",
     "module": "ES2022",
     "outDir": "./dist"
   }
diff --git a/packages/telemetry/src/project-info.ts b/packages/telemetry/src/project-info.ts
index 5f95d1b4b..f5f755bc1 100644
--- a/packages/telemetry/src/project-info.ts
+++ b/packages/telemetry/src/project-info.ts
@@ -80,7 +80,7 @@ function getProjectIdFromGit(): string | null {
 	}
 }
 
-function getProjectId(isCI: boolean): Pick<ProjectInfo, 'isGit' | 'anonymousProjectId'> {
+function getProjectId(isCI: boolean): Pick<ProjectInfo, 'anonymousProjectId' | 'isGit'> {
 	const projectIdFromGit = getProjectIdFromGit();
 	if (projectIdFromGit) {
 		return {
diff --git a/packages/telemetry/src/system-info.ts b/packages/telemetry/src/system-info.ts
index 77c735941..f92a0e276 100644
--- a/packages/telemetry/src/system-info.ts
+++ b/packages/telemetry/src/system-info.ts
@@ -52,6 +52,7 @@ export function getSystemInfo(versions: { viteVersion: string; astroVersion: str
 	}
 
 	const cpus = os.cpus() || [];
+
 	meta = {
 		// Version information
 		nodeVersion: process.version.replace(/^v?/, ''),
@@ -73,5 +74,5 @@ export function getSystemInfo(versions: { viteVersion: string; astroVersion: str
 		ciName,
 	};
 
-	return meta!;
+	return meta;
 }
diff --git a/packages/underscore-redirects/src/astro.ts b/packages/underscore-redirects/src/astro.ts
index fb28b048c..1464cb492 100644
--- a/packages/underscore-redirects/src/astro.ts
+++ b/packages/underscore-redirects/src/astro.ts
@@ -12,7 +12,7 @@ function getRedirectStatus(route: RouteData): ValidRedirectStatus {
 }
 
 interface CreateRedirectsFromAstroRoutesParams {
-	config: Pick<AstroConfig, 'output' | 'build'>;
+	config: Pick<AstroConfig, 'build' | 'output'>;
 	routes: RouteData[];
 	dir: URL;
 	dynamicTarget?: string;
@@ -139,5 +139,5 @@ function generateDynamicPattern(route: RouteData) {
 }
 
 function prependForwardSlash(str: string) {
-	return str[0] === '/' ? str : '/' + str;
+	return str.startsWith('/') ? str : '/' + str;
 }
diff --git a/packages/underscore-redirects/src/print.ts b/packages/underscore-redirects/src/print.ts
index b407dc7eb..5d7bd2387 100644
--- a/packages/underscore-redirects/src/print.ts
+++ b/packages/underscore-redirects/src/print.ts
@@ -18,11 +18,11 @@ export function print(
 
 	// Loop over the definitions
 	for (let i = 0; i < definitions.length; i++) {
-		let definition = definitions[i];
+		const definition = definitions[i];
 		// Figure out the number of spaces to add. We want at least 4 spaces
 		// after the input. This ensure that all targets line up together.
-		let inputSpaces = minInputLength - definition.input.length + 4;
-		let targetSpaces = minTargetLength - definition.target.length + 4;
+		const inputSpaces = minInputLength - definition.input.length + 4;
+		const targetSpaces = minTargetLength - definition.target.length + 4;
 		_redirects +=
 			(i === 0 ? '' : '\n') +
 			definition.input +
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 47b44a066..f4b2b72fc 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -30,11 +30,11 @@ importers:
         specifier: ^18.16.18
         version: 18.16.18
       '@typescript-eslint/eslint-plugin':
-        specifier: ^5.60.0
-        version: 5.60.0(@typescript-eslint/parser@5.60.0)(eslint@8.43.0)(typescript@5.0.2)
+        specifier: 6.0.0-alpha.158
+        version: 6.0.0-alpha.158(@typescript-eslint/parser@6.0.0-alpha.158)(eslint@8.43.0)(typescript@5.0.2)
       '@typescript-eslint/parser':
-        specifier: ^5.60.0
-        version: 5.60.0(eslint@8.43.0)(typescript@5.0.2)
+        specifier: 6.0.0-alpha.158
+        version: 6.0.0-alpha.158(eslint@8.43.0)(typescript@5.0.2)
       esbuild:
         specifier: ^0.17.19
         version: 0.17.19
@@ -8842,47 +8842,48 @@ packages:
   /@types/yargs-parser@21.0.0:
     resolution: {integrity: sha512-iO9ZQHkZxHn4mSakYV0vFHAVDyEOIJQrV2uZ06HxEPcx+mt8swXoZHIbaaJ2crJYFfErySgktuTZ3BeLz+XmFA==}
 
-  /@typescript-eslint/eslint-plugin@5.60.0(@typescript-eslint/parser@5.60.0)(eslint@8.43.0)(typescript@5.0.2):
-    resolution: {integrity: sha512-78B+anHLF1TI8Jn/cD0Q00TBYdMgjdOn980JfAVa9yw5sop8nyTfVOQAv6LWywkOGLclDBtv5z3oxN4w7jxyNg==}
-    engines: {node: ^12.22.0 || ^14.17.0 || >=16.0.0}
+  /@typescript-eslint/eslint-plugin@6.0.0-alpha.158(@typescript-eslint/parser@6.0.0-alpha.158)(eslint@8.43.0)(typescript@5.0.2):
+    resolution: {integrity: sha512-fzcdANIIKtQxen+IdXue1u4EHY8h84M8L+eSSYgQQUxJy7tTN4EfBK4jlAAVxGCE+TkmTzBMe52hMAV0PwNLiQ==}
+    engines: {node: ^16.0.0 || >=18.0.0}
     peerDependencies:
-      '@typescript-eslint/parser': ^5.0.0
-      eslint: ^6.0.0 || ^7.0.0 || ^8.0.0
+      '@typescript-eslint/parser': ^6.0.0 || ^6.0.0-alpha
+      eslint: ^7.0.0 || ^8.0.0
       typescript: '*'
     peerDependenciesMeta:
       typescript:
         optional: true
     dependencies:
       '@eslint-community/regexpp': 4.5.1
-      '@typescript-eslint/parser': 5.60.0(eslint@8.43.0)(typescript@5.0.2)
-      '@typescript-eslint/scope-manager': 5.60.0
-      '@typescript-eslint/type-utils': 5.60.0(eslint@8.43.0)(typescript@5.0.2)
-      '@typescript-eslint/utils': 5.60.0(eslint@8.43.0)(typescript@5.0.2)
+      '@typescript-eslint/parser': 6.0.0-alpha.158(eslint@8.43.0)(typescript@5.0.2)
+      '@typescript-eslint/scope-manager': 6.0.0-alpha.158
+      '@typescript-eslint/type-utils': 6.0.0-alpha.158(eslint@8.43.0)(typescript@5.0.2)
+      '@typescript-eslint/utils': 6.0.0-alpha.158(eslint@8.43.0)(typescript@5.0.2)
       debug: 4.3.4
       eslint: 8.43.0
       grapheme-splitter: 1.0.4
       ignore: 5.2.4
-      natural-compare-lite: 1.4.0
+      natural-compare: 1.4.0
       semver: 7.5.3
-      tsutils: 3.21.0(typescript@5.0.2)
+      ts-api-utils: 1.0.1(typescript@5.0.2)
       typescript: 5.0.2
     transitivePeerDependencies:
       - supports-color
     dev: true
 
-  /@typescript-eslint/parser@5.60.0(eslint@8.43.0)(typescript@5.0.2):
-    resolution: {integrity: sha512-jBONcBsDJ9UoTWrARkRRCgDz6wUggmH5RpQVlt7BimSwaTkTjwypGzKORXbR4/2Hqjk9hgwlon2rVQAjWNpkyQ==}
-    engines: {node: ^12.22.0 || ^14.17.0 || >=16.0.0}
+  /@typescript-eslint/parser@6.0.0-alpha.158(eslint@8.43.0)(typescript@5.0.2):
+    resolution: {integrity: sha512-LJ7qo0yfk4bxYw2A2OCwUeiGumsU4YCebu29dIxC2lK/aT398KazALqMzPC4z6544OS6zYVM2WI9uyCZ8wgj+Q==}
+    engines: {node: ^16.0.0 || >=18.0.0}
     peerDependencies:
-      eslint: ^6.0.0 || ^7.0.0 || ^8.0.0
+      eslint: ^7.0.0 || ^8.0.0
       typescript: '*'
     peerDependenciesMeta:
       typescript:
         optional: true
     dependencies:
-      '@typescript-eslint/scope-manager': 5.60.0
-      '@typescript-eslint/types': 5.60.0
-      '@typescript-eslint/typescript-estree': 5.60.0(typescript@5.0.2)
+      '@typescript-eslint/scope-manager': 6.0.0-alpha.158
+      '@typescript-eslint/types': 6.0.0-alpha.158
+      '@typescript-eslint/typescript-estree': 6.0.0-alpha.158(typescript@5.0.2)
+      '@typescript-eslint/visitor-keys': 6.0.0-alpha.158
       debug: 4.3.4
       eslint: 8.43.0
       typescript: 5.0.2
@@ -8890,72 +8891,72 @@ packages:
       - supports-color
     dev: true
 
-  /@typescript-eslint/scope-manager@5.60.0:
-    resolution: {integrity: sha512-hakuzcxPwXi2ihf9WQu1BbRj1e/Pd8ZZwVTG9kfbxAMZstKz8/9OoexIwnmLzShtsdap5U/CoQGRCWlSuPbYxQ==}
-    engines: {node: ^12.22.0 || ^14.17.0 || >=16.0.0}
+  /@typescript-eslint/scope-manager@6.0.0-alpha.158:
+    resolution: {integrity: sha512-59HcplMM9ZcdtfVe6pgFzereN49OKeVc/FZsymAaxe9QqGXby665pr2/IHcmFh3cnpgNdRQu+DaD5N538AprjA==}
+    engines: {node: ^16.0.0 || >=18.0.0}
     dependencies:
-      '@typescript-eslint/types': 5.60.0
-      '@typescript-eslint/visitor-keys': 5.60.0
+      '@typescript-eslint/types': 6.0.0-alpha.158
+      '@typescript-eslint/visitor-keys': 6.0.0-alpha.158
     dev: true
 
-  /@typescript-eslint/type-utils@5.60.0(eslint@8.43.0)(typescript@5.0.2):
-    resolution: {integrity: sha512-X7NsRQddORMYRFH7FWo6sA9Y/zbJ8s1x1RIAtnlj6YprbToTiQnM6vxcMu7iYhdunmoC0rUWlca13D5DVHkK2g==}
-    engines: {node: ^12.22.0 || ^14.17.0 || >=16.0.0}
+  /@typescript-eslint/type-utils@6.0.0-alpha.158(eslint@8.43.0)(typescript@5.0.2):
+    resolution: {integrity: sha512-fjUFPY92+0RzyRKs185Rpoaw4z4vt5qoxd6kHLLHjqKxO7xNsOF4nPPjRXlKfbVAUHecPqbFBRmElWCuaEjMdg==}
+    engines: {node: ^16.0.0 || >=18.0.0}
     peerDependencies:
-      eslint: '*'
+      eslint: ^7.0.0 || ^8.0.0
       typescript: '*'
     peerDependenciesMeta:
       typescript:
         optional: true
     dependencies:
-      '@typescript-eslint/typescript-estree': 5.60.0(typescript@5.0.2)
-      '@typescript-eslint/utils': 5.60.0(eslint@8.43.0)(typescript@5.0.2)
+      '@typescript-eslint/typescript-estree': 6.0.0-alpha.158(typescript@5.0.2)
+      '@typescript-eslint/utils': 6.0.0-alpha.158(eslint@8.43.0)(typescript@5.0.2)
       debug: 4.3.4
       eslint: 8.43.0
-      tsutils: 3.21.0(typescript@5.0.2)
+      ts-api-utils: 1.0.1(typescript@5.0.2)
       typescript: 5.0.2
     transitivePeerDependencies:
       - supports-color
     dev: true
 
-  /@typescript-eslint/types@5.60.0:
-    resolution: {integrity: sha512-ascOuoCpNZBccFVNJRSC6rPq4EmJ2NkuoKnd6LDNyAQmdDnziAtxbCGWCbefG1CNzmDvd05zO36AmB7H8RzKPA==}
-    engines: {node: ^12.22.0 || ^14.17.0 || >=16.0.0}
+  /@typescript-eslint/types@6.0.0-alpha.158:
+    resolution: {integrity: sha512-xfJnAaGKN1b/cz37T4FtQfCBKwA7fn1qxa/5UZmKT1FwI/J+lybk+dHdhU2KvNGJ/53/vGf0OObUzejf7oByLg==}
+    engines: {node: ^16.0.0 || >=18.0.0}
     dev: true
 
-  /@typescript-eslint/typescript-estree@5.60.0(typescript@5.0.2):
-    resolution: {integrity: sha512-R43thAuwarC99SnvrBmh26tc7F6sPa2B3evkXp/8q954kYL6Ro56AwASYWtEEi+4j09GbiNAHqYwNNZuNlARGQ==}
-    engines: {node: ^12.22.0 || ^14.17.0 || >=16.0.0}
+  /@typescript-eslint/typescript-estree@6.0.0-alpha.158(typescript@5.0.2):
+    resolution: {integrity: sha512-1hskAlZ2pliy1DQ1VM3Tu+JUQMtaWaLmMGOOmmI9H7yfudsopV7AOCk+NO1FWIATWIeUvPI33T09WKRdZGO4yg==}
+    engines: {node: ^16.0.0 || >=18.0.0}
     peerDependencies:
       typescript: '*'
     peerDependenciesMeta:
       typescript:
         optional: true
     dependencies:
-      '@typescript-eslint/types': 5.60.0
-      '@typescript-eslint/visitor-keys': 5.60.0
+      '@typescript-eslint/types': 6.0.0-alpha.158
+      '@typescript-eslint/visitor-keys': 6.0.0-alpha.158
       debug: 4.3.4
       globby: 11.1.0
       is-glob: 4.0.3
       semver: 7.5.3
-      tsutils: 3.21.0(typescript@5.0.2)
+      ts-api-utils: 1.0.1(typescript@5.0.2)
       typescript: 5.0.2
     transitivePeerDependencies:
       - supports-color
     dev: true
 
-  /@typescript-eslint/utils@5.60.0(eslint@8.43.0)(typescript@5.0.2):
-    resolution: {integrity: sha512-ba51uMqDtfLQ5+xHtwlO84vkdjrqNzOnqrnwbMHMRY8Tqeme8C2Q8Fc7LajfGR+e3/4LoYiWXUM6BpIIbHJ4hQ==}
-    engines: {node: ^12.22.0 || ^14.17.0 || >=16.0.0}
+  /@typescript-eslint/utils@6.0.0-alpha.158(eslint@8.43.0)(typescript@5.0.2):
+    resolution: {integrity: sha512-HDpGNQnbE09Kun4+IjnaWoARmhAdSbR6MTeaA0K12vzCg9M3rL2z72jzP0z4n7bGRJsNAoH+0SKSgcJ9NL8Bhw==}
+    engines: {node: ^16.0.0 || >=18.0.0}
     peerDependencies:
-      eslint: ^6.0.0 || ^7.0.0 || ^8.0.0
+      eslint: ^7.0.0 || ^8.0.0
     dependencies:
       '@eslint-community/eslint-utils': 4.4.0(eslint@8.43.0)
       '@types/json-schema': 7.0.11
       '@types/semver': 7.5.0
-      '@typescript-eslint/scope-manager': 5.60.0
-      '@typescript-eslint/types': 5.60.0
-      '@typescript-eslint/typescript-estree': 5.60.0(typescript@5.0.2)
+      '@typescript-eslint/scope-manager': 6.0.0-alpha.158
+      '@typescript-eslint/types': 6.0.0-alpha.158
+      '@typescript-eslint/typescript-estree': 6.0.0-alpha.158(typescript@5.0.2)
       eslint: 8.43.0
       eslint-scope: 5.1.1
       semver: 7.5.3
@@ -8964,11 +8965,11 @@ packages:
       - typescript
     dev: true
 
-  /@typescript-eslint/visitor-keys@5.60.0:
-    resolution: {integrity: sha512-wm9Uz71SbCyhUKgcaPRauBdTegUyY/ZWl8gLwD/i/ybJqscrrdVSFImpvUz16BLPChIeKBK5Fa9s6KDQjsjyWw==}
-    engines: {node: ^12.22.0 || ^14.17.0 || >=16.0.0}
+  /@typescript-eslint/visitor-keys@6.0.0-alpha.158:
+    resolution: {integrity: sha512-/1xiY3B2Du3a8YaKpF3MtNZRlzDRChJAb8kbt4mQ6h3XGLd8ZGRN8l971nbX632p78kETaJ+JgCGtrgJpQZO+g==}
+    engines: {node: ^16.0.0 || >=18.0.0}
     dependencies:
-      '@typescript-eslint/types': 5.60.0
+      '@typescript-eslint/types': 6.0.0-alpha.158
       eslint-visitor-keys: 3.4.1
     dev: true
 
@@ -14110,10 +14111,6 @@ packages:
   /napi-build-utils@1.0.2:
     resolution: {integrity: sha512-ONmRUqK7zj7DWX0D9ADe03wbwOBZxNAfF20PlGfCWQcD3+/MakShIHrMqx9YwPTfxDdF1zLeL+RGZiR9kGMLdg==}
 
-  /natural-compare-lite@1.4.0:
-    resolution: {integrity: sha512-Tj+HTDSJJKaZnfiuw+iaF9skdPpTo2GtEly5JHnWV/hfv2Qj/9RKsGISQtLh2ox3l5EAGw487hnBee0sIJ6v2g==}
-    dev: true
-
   /natural-compare@1.4.0:
     resolution: {integrity: sha512-OWND8ei3VtNC9h7V60qff3SVobHr996CTwgxubgyQYEpg290h9J0buyECNNJexkFm5sOajh5G116RYA1c8ZMSw==}
     dev: true
@@ -16779,6 +16776,15 @@ packages:
   /trough@2.1.0:
     resolution: {integrity: sha512-AqTiAOLcj85xS7vQ8QkAV41hPDIJ71XJB4RCUrzo/1GM2CQwhkJGaf9Hgr7BOugMRpgGUrqRg/DrBDl4H40+8g==}
 
+  /ts-api-utils@1.0.1(typescript@5.0.2):
+    resolution: {integrity: sha512-lC/RGlPmwdrIBFTX59wwNzqh7aR2otPNPR/5brHZm/XKFYKsfqxihXUe9pU3JI+3vGkl+vyCoNNnPhJn3aLK1A==}
+    engines: {node: '>=16.13.0'}
+    peerDependencies:
+      typescript: '>=4.2.0'
+    dependencies:
+      typescript: 5.0.2
+    dev: true
+
   /ts-interface-checker@0.1.13:
     resolution: {integrity: sha512-Y/arvbn+rrz3JCKl9C4kVNfTfSm2/mEp5FSz5EsZSANGPSlQrpRI5M4PKF+mJnE52jOO90PnPSc3Ur3bTQw0gA==}
 
@@ -16808,10 +16814,6 @@ packages:
       strip-json-comments: 2.0.1
     dev: true
 
-  /tslib@1.14.1:
-    resolution: {integrity: sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg==}
-    dev: true
-
   /tslib@2.1.0:
     resolution: {integrity: sha512-hcVC3wYEziELGGmEEXue7D75zbwIIVUMWAVbHItGPx0ziyXxrOMQx4rQEVEV45Ut/1IotuEvwqPopzIOkDMf0A==}
     dev: true
@@ -16819,16 +16821,6 @@ packages:
   /tslib@2.5.3:
     resolution: {integrity: sha512-mSxlJJwl3BMEQCUNnxXBU9jP4JBktcEGhURcPR6VQVlnP0FdDEsIaz0C35dXNGLyRfrATNofF0F5p2KPxQgB+w==}
 
-  /tsutils@3.21.0(typescript@5.0.2):
-    resolution: {integrity: sha512-mHKK3iUXL+3UF6xL5k0PEhKRUBKPBCv/+RkEOpjRWxxx27KKRBmmA60A9pgOUvMi8GKhRMPEmjBRPzs2W7O1OA==}
-    engines: {node: '>= 6'}
-    peerDependencies:
-      typescript: '>=2.8.0 || >= 3.2.0-dev || >= 3.3.0-dev || >= 3.4.0-dev || >= 3.5.0-dev || >= 3.6.0-dev || >= 3.6.0-beta || >= 3.7.0-dev || >= 3.7.0-beta'
-    dependencies:
-      tslib: 1.14.1
-      typescript: 5.0.2
-    dev: true
-
   /tty-table@4.2.1:
     resolution: {integrity: sha512-xz0uKo+KakCQ+Dxj1D/tKn2FSyreSYWzdkL/BYhgN6oMW808g8QRMuh1atAV9fjTPbWBjfbkKQpI/5rEcnAc7g==}
     engines: {node: '>=8.0.0'}
@@ -18139,25 +18131,21 @@ packages:
   file:packages/astro/test/fixtures/css-assets/packages/font-awesome:
     resolution: {directory: packages/astro/test/fixtures/css-assets/packages/font-awesome, type: directory}
     name: '@test/astro-font-awesome-package'
-    version: 0.0.1
     dev: false
 
   file:packages/astro/test/fixtures/multiple-renderers/renderers/one:
     resolution: {directory: packages/astro/test/fixtures/multiple-renderers/renderers/one, type: directory}
     name: '@test/astro-renderer-one'
-    version: 1.0.0
     dev: false
 
   file:packages/astro/test/fixtures/multiple-renderers/renderers/two:
     resolution: {directory: packages/astro/test/fixtures/multiple-renderers/renderers/two, type: directory}
     name: '@test/astro-renderer-two'
-    version: 1.0.0
     dev: false
 
   file:packages/astro/test/fixtures/solid-component/deps/solid-jsx-component:
     resolution: {directory: packages/astro/test/fixtures/solid-component/deps/solid-jsx-component, type: directory}
     name: '@test/solid-jsx-component'
-    version: 0.0.0
     dependencies:
       solid-js: 1.7.6
     dev: false
diff --git a/tsconfig.eslint.json b/tsconfig.eslint.json
new file mode 100644
index 000000000..678a223c9
--- /dev/null
+++ b/tsconfig.eslint.json
@@ -0,0 +1,6 @@
+{
+  "compilerOptions": {
+    "allowJs": true
+  },
+  "extends": "./tsconfig.base.json"
+}