Add minification for resolc_packed.js

js/build.js

@@ -0,0 +1,63 @@
+const fs = require("fs");
+const path = require("path");
+const { execSync } = require("child_process");
+const { minify } = require("terser");
+
+const RESOLC_WASM_TARGET_DIR = path.join(
+  __dirname,
+  "../target/wasm32-unknown-emscripten/release",
+);
+const RESOLC_WASM = path.join(RESOLC_WASM_TARGET_DIR, "resolc.wasm");
+const RESOLC_JS = path.join(RESOLC_WASM_TARGET_DIR, "resolc.js");
+const RESOLC_JS_PACKED = path.join(RESOLC_WASM_TARGET_DIR, "resolc_packed.js");
+
+const execShellCommand = (cmd) => {
+  return execSync(cmd, {
+    encoding: "utf-8",
+    maxBuffer: 1024 * 1024 * 100,
+  }).trim();
+};
+
+const wasmBase64 = execShellCommand(
+  `lz4c --no-frame-crc --best --favor-decSpeed "${RESOLC_WASM}" - | tail -c +8 | base64 -w 0`,
+);
+
+const wasmSize = fs.statSync(RESOLC_WASM).size;
+
+const miniLz4 = fs.readFileSync(
+  path.join(__dirname, "utils/mini-lz4.js"),
+  "utf-8",
+);
+const base64DecToArr = fs.readFileSync(
+  path.join(__dirname, "utils/base64DecToArr.js"),
+  "utf-8",
+);
+const resolcJs = fs.readFileSync(RESOLC_JS, "utf-8");
+
+const packedJsContent = `
+let moduleArgs = { wasmBinary: (function(source, uncompressedSize) {
+  ${miniLz4}
+  ${base64DecToArr}
+  return uncompress(base64DecToArr(source), uncompressedSize);
+})("${wasmBase64}", ${wasmSize}),
+};
+
+${resolcJs}
+
+createRevive = createRevive.bind(null, moduleArgs);
+`;
+
+minify(packedJsContent)
+  .then((minifiedJs) => {
+    if (minifiedJs.error) {
+      console.error("Error during minification:", minifiedJs.error);
+      process.exit(1);
+    }
+
+    fs.writeFileSync(RESOLC_JS_PACKED, minifiedJs.code, "utf-8");
+    console.log(`Combined script written to ${RESOLC_JS_PACKED}`);
+  })
+  .catch((err) => {
+    console.error("Minification failed:", err);
+    process.exit(1);
+  });