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import type { AstroAdapter, AstroIntegration, AstroConfig, RouteData } from 'astro';
import * as fs from 'fs';
export function getAdapter(): AstroAdapter {
return {
name: '@astrojs/netlify/edge-functions',
serverEntrypoint: '@astrojs/netlify/netlify-edge-functions.js',
exports: ['default'],
};
}
interface NetlifyEdgeFunctionsOptions {
dist?: URL;
}
interface NetlifyEdgeFunctionManifestFunctionPath {
function: string;
path: string;
}
interface NetlifyEdgeFunctionManifestFunctionPattern {
function: string;
pattern: string;
}
type NetlifyEdgeFunctionManifestFunction = NetlifyEdgeFunctionManifestFunctionPath | NetlifyEdgeFunctionManifestFunctionPattern;
interface NetlifyEdgeFunctionManifest {
functions: NetlifyEdgeFunctionManifestFunction[];
version: 1;
}
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,
pattern: route.pattern.source
});
}
}
const manifest: NetlifyEdgeFunctionManifest = {
functions,
version: 1
};
const manifestURL = new URL('./manifest.json', dir);
const _manifest = JSON.stringify(manifest, null, ' ');
await fs.promises.writeFile(manifestURL, _manifest, 'utf-8');
}
export function netlifyEdgeFunctions({ dist }: NetlifyEdgeFunctionsOptions = {}): AstroIntegration {
let _config: AstroConfig;
let entryFile: string;
return {
name: '@astrojs/netlify/edge-functions',
hooks: {
'astro:config:setup': ({ config }) => {
if (dist) {
config.outDir = dist;
} else {
config.outDir = new URL('./netlify/', config.root);
}
},
'astro:config:done': ({ config, setAdapter }) => {
setAdapter(getAdapter());
_config = config;
},
'astro:build:start': async ({ buildConfig }) => {
entryFile = buildConfig.serverEntry.replace(/\.m?js/, '');
buildConfig.client = _config.outDir;
buildConfig.server = new URL('./edge-functions/', _config.outDir);
},
'astro:build:setup': ({ vite, target }) => {
if (target === 'server') {
vite.ssr = {
noExternal: true,
};
}
},
'astro:build:done': async ({ routes, dir }) => {
await createEdgeManifest(routes, entryFile, new URL('./edge-functions/', dir));
},
},
};
}
export {
netlifyEdgeFunctions as default
}
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