fix(netlify): bundle netlify functions as ESM to support top-level aw…

…ait (#8661)
withastro · Sep 25, 2023 · 008f764 · 008f764
1 parent 954cadc
commit 008f764
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diff --git a/.changeset/witty-carrots-applaud.md b/.changeset/witty-carrots-applaud.md
@@ -0,0 +1,5 @@
+---
+'@astrojs/netlify': patch
+---
+
+fix build failures because of CJS builds and top-level await
diff --git a/packages/integrations/netlify/src/integration-functions.ts b/packages/integrations/netlify/src/integration-functions.ts
@@ -1,5 +1,6 @@
 import type { AstroAdapter, AstroConfig, AstroIntegration, RouteData } from 'astro';
-import { extname } from 'node:path';
+import { extname, join } from 'node:path';
+import { writeFile } from 'node:fs/promises';
 import { fileURLToPath } from 'node:url';
 import { generateEdgeMiddleware } from './middleware.js';
 import type { Args } from './netlify-functions.js';
@@ -85,6 +86,15 @@ function netlifyFunctions({
 				}
 			},
 			'astro:build:done': async ({ routes, dir }) => {
+				const functionsConfig = {
+						version: 1,
+						config: {
+							nodeModuleFormat: "esm"
+						}
+				}
+				const functionsConfigPath = join(fileURLToPath(_config.build.server), "entry.json")
+				await writeFile(functionsConfigPath, JSON.stringify(functionsConfig))
+
 				const type = builders ? 'builders' : 'functions';
 				const kind = type ?? 'functions';