Inline tree-sitter wasm and add runtime fallback (#11157)

esbuild.config.js

@@ -8,6 +8,7 @@ import path from 'node:path';
 import { fileURLToPath } from 'node:url';
 import { createRequire } from 'node:module';
 import { writeFileSync } from 'node:fs';
+import { wasmLoader } from 'esbuild-plugin-wasm';
 
 let esbuild;
 try {
@@ -22,6 +23,37 @@ const __dirname = path.dirname(__filename);
 const require = createRequire(import.meta.url);
 const pkg = require(path.resolve(__dirname, 'package.json'));
 
+function createWasmPlugins() {
+  const wasmBinaryPlugin = {
+    name: 'wasm-binary',
+    setup(build) {
+      build.onResolve({ filter: /\.wasm\?binary$/ }, (args) => {
+        const specifier = args.path.replace(/\?binary$/, '');
+        const resolveDir = args.resolveDir || '';
+        const isBareSpecifier =
+          !path.isAbsolute(specifier) &&
+          !specifier.startsWith('./') &&
+          !specifier.startsWith('../');
+
+        let resolvedPath;
+        if (isBareSpecifier) {
+          resolvedPath = require.resolve(specifier, {
+            paths: resolveDir ? [resolveDir, __dirname] : [__dirname],
+          });
+        } else {
+          resolvedPath = path.isAbsolute(specifier)
+            ? specifier
+            : path.join(resolveDir, specifier);
+        }
+
+        return { path: resolvedPath, namespace: 'wasm-embedded' };
+      });
+    },
+  };
+
+  return [wasmBinaryPlugin, wasmLoader({ mode: 'embedded' })];
+}
+
 const external = [
   '@lydell/node-pty',
   'node-pty',
@@ -51,6 +83,7 @@ const cliConfig = {
   define: {
     'process.env.CLI_VERSION': JSON.stringify(pkg.version),
   },
+  plugins: createWasmPlugins(),
   alias: {
     'is-in-ci': path.resolve(__dirname, 'packages/cli/src/patches/is-in-ci.ts'),
   },
@@ -67,6 +100,7 @@ const a2aServerConfig = {
   define: {
     'process.env.CLI_VERSION': JSON.stringify(pkg.version),
   },
+  plugins: createWasmPlugins(),
 };
 
 Promise.allSettled([