[static-build] Use esbuild (#10462)

Switch to using esbuild to compile + bundle `@vercel/static-build`.

.changeset/moody-carrots-know.md

@@ -0,0 +1,5 @@
+---
+'@vercel/static-build': patch
+---
+
+Build package using "esbuild"

packages/static-build/build.js

@@ -1,19 +0,0 @@
-const execa = require('execa');
-const { remove } = require('fs-extra');
-
-async function main() {
-  await remove('dist');
-
-  await execa('tsc', [], { stdio: 'inherit' });
-
-  await execa(
-    'ncc',
-    ['build', 'src/index.ts', '-e', '@vercel/build-utils', '-o', 'dist'],
-    { stdio: 'inherit' }
-  );
-}
-
-main().catch(err => {
-  console.error(err);
-  process.exit(1);
-});

packages/static-build/package.json

@@ -13,7 +13,7 @@
     "directory": "packages/static-build"
   },
   "scripts": {
-    "build": "node build",
+    "build": "node ../../utils/build-builder.mjs",
     "test": "jest --reporters=default --reporters=jest-junit --env node --verbose --bail --runInBand",
     "test-unit": "pnpm test test/build.test.ts test/gatsby.test.ts test/prepare-cache.test.ts",
     "test-e2e": "pnpm test test/integration-*.test.js"

packages/static-build/src/utils/gatsby.ts

@@ -2,6 +2,7 @@ import { isErrnoException } from '@vercel/error-utils';
 import fs from 'fs-extra';
 import * as path from 'path';
 import semver from 'semver';
+import { createRequire } from 'module';
 import { fileExists } from './_shared';
 
 const PLUGINS = [
@@ -13,14 +14,14 @@ type PluginName = typeof PLUGINS[number];
 const GATSBY_CONFIG_FILE = 'gatsby-config';
 const GATSBY_NODE_FILE = 'gatsby-node';
 
+const require_ = createRequire(__filename);
+
 const PLUGIN_PATHS: Record<PluginName, string> = {
   '@vercel/gatsby-plugin-vercel-analytics': path.dirname(
-    eval('require').resolve(
-      `@vercel/gatsby-plugin-vercel-analytics/package.json`
-    )
+    require_.resolve(`@vercel/gatsby-plugin-vercel-analytics/package.json`)
   ),
   '@vercel/gatsby-plugin-vercel-builder': path.dirname(
-    eval('require').resolve(`@vercel/gatsby-plugin-vercel-builder/package.json`)
+    require_.resolve(`@vercel/gatsby-plugin-vercel-builder/package.json`)
   ),
 };
 

utils/build-builder.mjs

@@ -0,0 +1,20 @@
+/**
+ * This script is the build configuration common to all our Builder packages.
+ * We bundle the output using `esbuild`, and do not publish type definitions.
+ *
+ * `@vercel/build-utils` is marked as external because it's always an implicit
+ * dependency when the Builder is invoked by `vercel build`.
+ */
+import { join } from 'node:path';
+import { readFileSync } from 'node:fs';
+import { esbuild } from './build.mjs';
+
+const pkgPath = join(process.cwd(), 'package.json');
+const pkg = JSON.parse(readFileSync(pkgPath, 'utf8'));
+
+const externals = Object.keys(pkg.dependencies || {});
+
+await esbuild({
+  bundle: true,
+  external: ['@vercel/build-utils', ...externals],
+});