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import { createRedirectsFromAstroRoutes } from '@astrojs/underscore-redirects';
import type { AstroConfig, RouteData } from 'astro';
import esbuild from 'esbuild';
import fs from 'node:fs';
import npath from 'node:path';
import { fileURLToPath } from 'node:url';
export const DENO_SHIM = `globalThis.process = {
argv: [],
env: Deno.env.toObject(),
};`;
export interface NetlifyEdgeFunctionsOptions {
dist?: URL;
}
export interface NetlifyEdgeFunctionManifestFunctionPath {
function: string;
path: string;
}
export interface NetlifyEdgeFunctionManifestFunctionPattern {
function: string;
pattern: string;
}
export type NetlifyEdgeFunctionManifestFunction =
| NetlifyEdgeFunctionManifestFunctionPath
| NetlifyEdgeFunctionManifestFunctionPattern;
export interface NetlifyEdgeFunctionManifest {
functions: NetlifyEdgeFunctionManifestFunction[];
version: 1;
}
export async function createRedirects(
config: AstroConfig,
routeToDynamicTargetMap: Map<RouteData, string>,
dir: URL
) {
const _redirectsURL = new URL('./_redirects', dir);
const _redirects = createRedirectsFromAstroRoutes({
config,
routeToDynamicTargetMap,
dir,
});
const content = _redirects.print();
// Always use appendFile() because the redirects file could already exist,
// e.g. due to a `/public/_redirects` file that got copied to the output dir.
// If the file does not exist yet, appendFile() automatically creates it.
await fs.promises.appendFile(_redirectsURL, content, 'utf-8');
}
export async function createEdgeManifest(routes: RouteData[], entryFile: string, dir: URL) {
const functions: NetlifyEdgeFunctionManifestFunction[] = [];
for (const route of routes) {
if (route.pathname) {
functions.push({
function: entryFile,
path: route.pathname,
});
} else {
functions.push({
function: entryFile,
// Make route pattern serializable to match expected
// Netlify Edge validation format. Mirrors Netlify's own edge bundler:
// https://github.com/netlify/edge-bundler/blob/main/src/manifest.ts#L34
pattern: route.pattern.source.replace(/\\\//g, '/').toString(),
});
}
}
const manifest: NetlifyEdgeFunctionManifest = {
functions,
version: 1,
};
const baseDir = new URL('./.netlify/edge-functions/', dir);
await fs.promises.mkdir(baseDir, { recursive: true });
const manifestURL = new URL('./manifest.json', baseDir);
const _manifest = JSON.stringify(manifest, null, ' ');
await fs.promises.writeFile(manifestURL, _manifest, 'utf-8');
}
export async function bundleServerEntry(entryUrl: URL, serverUrl?: URL, vite?: any | undefined) {
const pth = fileURLToPath(entryUrl);
await esbuild.build({
target: 'es2020',
platform: 'browser',
entryPoints: [pth],
outfile: pth,
allowOverwrite: true,
format: 'esm',
bundle: true,
external: ['@astrojs/markdown-remark', 'astro/middleware'],
banner: {
js: DENO_SHIM,
},
});
// Remove chunks, if they exist. Since we have bundled via esbuild these chunks are trash.
if (vite && serverUrl) {
try {
const chunkFileNames =
vite?.build?.rollupOptions?.output?.chunkFileNames ?? `chunks/chunk.[hash].mjs`;
const chunkPath = npath.dirname(chunkFileNames);
const chunksDirUrl = new URL(chunkPath + '/', serverUrl);
await fs.promises.rm(chunksDirUrl, { recursive: true, force: true });
} catch {}
}
}
|
