Bundle bootstrap with esbuild

Author: s-h-a-d-o-w

bootstrap/esbuild.ts

@@ -0,0 +1,94 @@
+import esbuild, { Plugin } from "esbuild";
+import { getAbi } from "node-abi";
+import fs from "fs/promises";
+import path from "path";
+import { glob } from "glob";
+
+interface PrebuildifyOptions {
+  // CSV list of prebuildify targets. Combination of os.platform() and os.arch(), e.g. `win32-x64`.
+  // By default, all will be copied.
+  prebuildifyTargets?: string;
+
+  // Ideally exactly the node version you're distributing with. (If only e.g. "node22" is soecified, it will be assumed that the prebuilds have to support 22.0.0!)
+  // By default, this uses the target set in esbuild options. If neither exists, everything will be copies.
+  target?: string;
+}
+
+const prebuildifyPlugin = ({
+  prebuildifyTargets,
+  target,
+}: PrebuildifyOptions = {}): Plugin => ({
+  name: "prebuildify",
+  setup(build) {
+    build.onEnd(async () => {
+      const options = build.initialOptions;
+      const outdir =
+        options.outdir || (options.outfile && path.dirname(options.outfile));
+
+      if (!outdir) {
+        throw new Error(
+          "Either `outfile` or `outdir` must be specified when using this plugin.",
+        );
+      }
+
+      const outPrebuilds = path.join(outdir, "prebuilds");
+      await fs.mkdir(outPrebuilds, { recursive: true });
+
+      const prebuilds = await glob("node_modules/**/prebuilds/**/*.node");
+
+      // Get target ABI version if specified
+      const targets =
+        typeof options.target === "string"
+          ? [options.target]
+          : options.target || target?.split(",");
+      const targetAbis =
+        targets &&
+        new Set(
+          targets
+            .filter((target) => target.startsWith("node"))
+            .map((target) => target.replace("node", ""))
+            .map((target) => (target.includes(".") ? target : target + ".0.0"))
+            .map((target) => getAbi(target, "node")),
+        );
+
+      // Copy relevant prebuilds
+      const parsedPlatforms = prebuildifyTargets?.split(",");
+      for (const prebuild of prebuilds) {
+        const filename = path.basename(prebuild);
+        const platform = path.dirname(prebuild).split(path.sep).pop();
+
+        if (
+          platform &&
+          parsedPlatforms &&
+          !parsedPlatforms?.includes(platform)
+        ) {
+          continue;
+        }
+
+        if (targetAbis) {
+          const abi = filename.match(/abi([0-9]+)./)?.[1];
+          if (abi && !targetAbis.has(abi)) {
+            continue;
+          }
+        }
+
+        const outPath = path.join(outPrebuilds, platform!);
+        await fs.mkdir(outPath, { recursive: true });
+        await fs.copyFile(prebuild, path.join(outPath, filename));
+      }
+    });
+  },
+});
+
+await esbuild.build({
+  entryPoints: ["index.ts"],
+  bundle: true,
+  platform: "node",
+  target: "node22.11.0",
+  outfile: "dist/index.js",
+  plugins: [
+    prebuildifyPlugin({
+      prebuildifyTargets: "win32-x64",
+    }),
+  ],
+});

bootstrap/package.json

@@ -3,8 +3,11 @@
   "version": "1.0.0",
   "main": "index.ts",
   "license": "MIT",
+  "type": "module",
   "scripts": {
-    "build": "rimraf dist && ncc build index.ts",
+    "build": "rimraf dist && pnpm tsx esbuild.ts",
+    "build:esfirsttry": "esbuild index.ts --bundle --platform=node --target=node22 --external:*.node --outfile=dist/index.cjs",
+    "build:old": "rimraf dist && ncc build index.ts",
     "start": "tsx ."
   },
   "dependencies": {
@@ -13,7 +16,11 @@
     "open": "^10.1.0"
   },
   "devDependencies": {
+    "@types/node-abi": "^3.0.3",
     "@vercel/ncc": "0.38.3",
+    "esbuild": "^0.24.2",
+    "glob": "^11.0.1",
+    "node-abi": "^3.73.0",
     "rimraf": "6.0.1",
     "tsx": "^4.19.2"
   },