migrate build.sh to build.mts

Author: gfx

package-lock.json

@@ -25,7 +25,8 @@
   "sideEffects": false,
   "scripts": {
     "build": "npm publish --dry-run",
-    "prepare": "npm run clean && ./wasm/build.sh && webpack --bail && tsgo --build tsconfig.dist.cjs.json tsconfig.dist.esm.json && tsimp tools/fix-ext.mts --mjs dist.esm/*.js dist.esm/*/*.js dist.esm/*.d.ts dist.esm/*/*.d.ts && tsimp tools/fix-ext.mts --cjs dist.cjs/*.js dist.cjs/*/*.js dist.cjs/*.d.ts dist.cjs/*/*.d.ts",
+    "build:wasm": "node wasm/build.mts",
+    "prepare": "npm run clean && webpack --bail && tsgo --build tsconfig.dist.cjs.json tsconfig.dist.esm.json && tsimp tools/fix-ext.mts --mjs dist.esm/*.js dist.esm/*/*.js dist.esm/*.d.ts dist.esm/*/*.d.ts && tsimp tools/fix-ext.mts --cjs dist.cjs/*.js dist.cjs/*/*.js dist.cjs/*.d.ts dist.cjs/*/*.d.ts",
     "prepublishOnly": "npm run test:dist",
     "clean": "rimraf build dist dist.*",
     "test": "mocha 'test/**/*.test.ts'",
@@ -74,9 +75,10 @@
     "@types/node": "latest",
     "@typescript-eslint/eslint-plugin": "latest",
     "@typescript-eslint/parser": "latest",
-    "@typescript/native-preview": "^7.0.0-dev.20251225.1",
+    "@typescript/native-preview": "latest",
     "assert": "latest",
     "benchmark": "latest",
+    "binaryen": "latest",
     "buffer": "latest",
     "core-js": "latest",
     "eslint": "latest",

package.json

@@ -1,4 +1,4 @@
-// Auto-generated by wasm/build.sh - DO NOT EDIT MANUALLY
+// Auto-generated by wasm/build.mts - DO NOT EDIT MANUALLY
 // Source: wasm/utf8.wat
 
 export const wasmBinary = `

src/utils/utf8-wasm-binary.ts

@@ -2,7 +2,7 @@
   "compilerOptions": {
     /* Basic Options */
     "target": "es2020", /* the baseline */
-    "module": "CommonJS", /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
+    "module": "esnext", /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
     "lib": [
       "esnext",
       "dom"

tsconfig.json

@@ -0,0 +1,61 @@
+// Build script for UTF-8 wasm module
+// Invoked by `npm run build:wasm`
+
+/* eslint-disable no-console */
+
+import fs from "node:fs";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import binaryen from "binaryen";
+import binaryenMetadata from "binaryen/package.json" with { type: "json" };
+
+
+const dirname = path.dirname(fileURLToPath(import.meta.url));
+
+const watPath = path.join(dirname, "utf8.wat");
+const wasmPath = path.join(dirname, "utf8.wasm");
+const tsOutputPath = path.join(dirname, "..", "src", "utils", "utf8-wasm-binary.ts");
+
+console.log(`Compiling utf8.wat -> utf8.wasm with Binaryen v${binaryenMetadata.version}...`);
+
+// Read WAT source
+const watSource = fs.readFileSync(watPath, "utf-8");
+
+// Parse WAT to module
+const mod = binaryen.parseText(watSource);
+
+// Enable required features
+mod.setFeatures(binaryen.Features.ReferenceTypes | binaryen.Features.GC | binaryen.Features.Strings);
+
+// Optimize (equivalent to wasm-opt -O4)
+mod.optimize();
+
+// Emit binary
+const wasmBinary = mod.emitBinary();
+
+// Write wasm file
+fs.writeFileSync(wasmPath, wasmBinary);
+
+console.log("Generating base64 TypeScript module...");
+
+// Convert to base64 with line breaks (like base64 -b 78)
+const base64 = Buffer.from(wasmBinary).toString("base64");
+const base64WithLineBreaks = base64.match(/.{1,78}/g)?.join("\n") ?? base64;
+
+// Generate TypeScript file
+const tsContent = `// Auto-generated by wasm/build.mts - DO NOT EDIT MANUALLY
+// Source: wasm/utf8.wat
+
+export const wasmBinary = \`
+${base64WithLineBreaks}
+\`;
+`;
+
+fs.writeFileSync(tsOutputPath, tsContent);
+
+// Clean up
+mod.dispose();
+
+console.log("Done! Generated:");
+console.log(`  - wasm/utf8.wasm (${wasmBinary.length} bytes)`);
+console.log(`  - src/utils/utf8-wasm-binary.ts (${Buffer.byteLength(tsContent)} bytes)`);