chore: remove babel setup

package.json

@@ -12,7 +12,6 @@
     "@babel/preset-env": "^7.18.10",
     "@babel/preset-react": "^7.18.6",
     "@babel/preset-typescript": "^7.18.6",
-    "@babel/register": "^7.18.9",
     "@cspotcode/source-map-support": "^0.8.1",
     "@types/jest": "^28.1.6",
     "@types/node": "^18.11.11",

scripts/setup-ts-execution.js

@@ -1,9 +1,107 @@
-switch (process.env.YARNPKG_TRANSPILER) {
-  case `esbuild`:
-    require(`./setup-ts-execution-esbuild.js`);
-    break;
-  default:
-  case `babel`:
-    require(`./setup-ts-execution-babel.js`);
-    break;
+const esbuild = require(`esbuild-wasm`);
+const fs = require(`fs`);
+const crypto = require(`crypto`);
+const v8 = require(`v8`);
+const zlib = require(`zlib`);
+const path = require(`path`);
+const pirates = require(`pirates`);
+
+// Needed by the worker spawned by Esbuild
+if (process.versions.pnp)
+  process.env.NODE_OPTIONS = `${process.env.NODE_OPTIONS || ``} -r ${JSON.stringify(require.resolve(`pnpapi`))}`;
+
+const resolveVirtual = process.versions.pnp ? require(`pnpapi`).resolveVirtual : undefined;
+
+const weeksSinceUNIXEpoch = Math.floor(Date.now() / 604800000);
+
+const cache = {
+  version: [esbuild.version, weeksSinceUNIXEpoch, process.versions.node, !!process.setSourceMapsEnabled].join(`\0`),
+  files: new Map(),
+  isDirty: false,
+};
+
+const cachePath = path.join(__dirname, `../node_modules/.cache/yarn/esbuild-transpile-cache.bin`);
+try {
+  const cacheData = v8.deserialize(zlib.gunzipSync(fs.readFileSync(cachePath)));
+  if (cacheData.version === cache.version) {
+    cache.files = cacheData.files;
+  }
+} catch { }
+
+function persistCache() {
+  if (!cache.isDirty)
+    return;
+  cache.isDirty = false;
+
+  fs.mkdirSync(path.dirname(cachePath), {recursive: true});
+  const tmpPath = cachePath + crypto.randomBytes(8).toString(`hex`);
+  fs.writeFileSync(
+    tmpPath,
+    zlib.gzipSync(
+      v8.serialize({
+        version: cache.version,
+        files: cache.files,
+      }),
+      {level: 1},
+    ),
+  );
+  fs.renameSync(tmpPath, cachePath);
 }
+
+process.once(`exit`, persistCache);
+process.nextTick(persistCache);
+
+process.setSourceMapsEnabled
+  ? process.setSourceMapsEnabled(true)
+  : require(`@cspotcode/source-map-support`).install({
+    environment: `node`,
+    retrieveSourceMap(filename) {
+      filename = resolveVirtual?.(filename) || filename;
+
+      const cacheEntry = cache.files.get(filename);
+      if (cacheEntry)
+        return {url: filename, map: cacheEntry.map};
+
+      return null;
+    },
+  });
+
+pirates.addHook(
+  (sourceCode, filename) => {
+    filename = resolveVirtual?.(filename) || filename;
+
+    const cacheEntry = cache.files.get(filename);
+
+    if (cacheEntry?.source === sourceCode)
+      return cacheEntry.code;
+
+    const res = esbuild.transformSync(sourceCode, {
+      target: `node${process.versions.node}`,
+      loader: path.extname(filename).slice(1),
+      sourcefile: filename,
+      sourcemap: process.setSourceMapsEnabled ? `inline` : `both`,
+      platform: `node`,
+      format: `cjs`,
+    });
+
+    cache.isDirty = true;
+    cache.files.set(filename, {
+      source: sourceCode,
+      code: res.code,
+      map: res.map,
+    });
+
+    return res.code;
+  },
+  {
+    extensions: [`.tsx`, `.ts`, `.js`],
+    matcher(p) {
+      if (p?.endsWith(`.js`)) {
+        const normalizedP = p.replace(/\\/g, `/`);
+        return normalizedP.includes(`packages/yarnpkg-pnp/sources/node`) || normalizedP.endsWith(`packages/yarnpkg-pnp/sources/loader/node-options.js`);
+      }
+
+      return true;
+    },
+  },
+);