fix build base bug (#3068)

* fix ssr url search params bug

* fix build base bug

* safer slash removal

5 files changed, 19 insertions, 11 deletions

diff --git a/.changeset/nice-dingos-enjoy.md b/.changeset/nice-dingos-enjoy.md
new file mode 100644
index 000000000..922b69104
--- /dev/null
+++ b/.changeset/nice-dingos-enjoy.md
@@ -0,0 +1,5 @@
+---
+'astro': patch
+---
+
+Fix an issue around build not respecting your base config
diff --git a/packages/astro/src/core/build/generate.ts b/packages/astro/src/core/build/generate.ts
index b1c03465b..17b419bb4 100644
--- a/packages/astro/src/core/build/generate.ts
+++ b/packages/astro/src/core/build/generate.ts
@@ -11,7 +11,7 @@ import type {
 } from '../../@types/astro';
 import type { BuildInternals } from '../../core/build/internal.js';
 import { debug, info } from '../logger/core.js';
-import { prependForwardSlash } from '../../core/path.js';
+import { prependForwardSlash, removeLeadingForwardSlash } from '../../core/path.js';
 import type { RenderOptions } from '../../core/render/core';
 import { BEFORE_HYDRATION_SCRIPT_ID } from '../../vite-plugin-scripts/index.js';
 import { call as callEndpoint } from '../endpoint/index.js';
@@ -191,7 +191,7 @@ async function generatePath(
 	}
 
 	const ssr = isBuildingToSSR(opts.astroConfig);
-	const url = new URL(origin + pathname);
+	const url = new URL(opts.astroConfig.base + removeLeadingForwardSlash(pathname), origin);
 	const options: RenderOptions = {
 		legacyBuild: false,
 		links,
diff --git a/packages/astro/src/core/path.ts b/packages/astro/src/core/path.ts
index 16945d960..a93b4e8e1 100644
--- a/packages/astro/src/core/path.ts
+++ b/packages/astro/src/core/path.ts
@@ -6,10 +6,18 @@ export function prependForwardSlash(path: string) {
 	return path[0] === '/' ? path : '/' + path;
 }
 
-export function removeEndingForwardSlash(path: string) {
+export function removeTrailingForwardSlash(path: string) {
 	return path.endsWith('/') ? path.slice(0, path.length - 1) : path;
 }
 
+export function removeLeadingForwardSlash(path: string) {
+	return path.startsWith('/') ? path.substring(1) : path;
+}
+
+export function trimSlashes(path: string) {
+	return path.replace(/^\/|\/$/g, '');
+}
+
 export function startsWithForwardSlash(path: string) {
 	return path[0] === '/';
 }
@@ -39,6 +47,3 @@ export function prependDotSlash(path: string) {
 	return './' + path;
 }
 
-export function trimSlashes(path: string) {
-	return path.replace(/^\/|\/$/g, '');
-}
diff --git a/packages/astro/src/core/util.ts b/packages/astro/src/core/util.ts
index 703e01ec9..8def24771 100644
--- a/packages/astro/src/core/util.ts
+++ b/packages/astro/src/core/util.ts
@@ -6,7 +6,7 @@ import slash from 'slash';
 import { fileURLToPath, pathToFileURL } from 'url';
 import type { ErrorPayload } from 'vite';
 import type { AstroConfig } from '../@types/astro';
-import { removeEndingForwardSlash } from './path.js';
+import { removeTrailingForwardSlash } from './path.js';
 
 /** Returns true if argument is an object of any prototype/class (but not null). */
 export function isObject(value: unknown): value is Record<string, any> {
@@ -37,7 +37,7 @@ export function getOutputFilename(astroConfig: AstroConfig, name: string) {
 	if (astroConfig.build.format === 'directory' && !STATUS_CODE_REGEXP.test(name)) {
 		return path.posix.join(name, 'index.html');
 	}
-	return `${removeEndingForwardSlash(name || 'index')}.html`;
+	return `${removeTrailingForwardSlash(name || 'index')}.html`;
 }
 
 /** is a specifier an npm package? */
diff --git a/packages/astro/test/astro-global.test.js b/packages/astro/test/astro-global.test.js
index cf1dabfc8..46564ed0d 100644
--- a/packages/astro/test/astro-global.test.js
+++ b/packages/astro/test/astro-global.test.js
@@ -38,9 +38,7 @@ describe('Astro.*', () => {
 			await fixture.build();
 		});
 
-		// BUG: Doesn't seem like `base` config is being respected in build,
-		// most values are incorrect actual, does not match expected.
-		it.skip('Astro.request.url', async () => {
+		it('Astro.request.url', async () => {
 			const html = await fixture.readFile('/index.html');
 			const $ = cheerio.load(html);