Pack resolc with deps to one file

js/build.js

@@ -1,46 +1,36 @@
 const fs = require("fs");
 const path = require("path");
-const { execSync } = require("child_process");
 const { minify } = require("terser");
 
+const SOLJSON_URI =
+  "https://binaries.soliditylang.org/wasm/soljson-v0.8.28+commit.7893614a.js";
+const RESOLC_WASM_URI = "http://127.0.0.1:8080/resolc.wasm";
 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}", ${wasmSize}),
-};
+if (typeof importScripts === "function") {
+  importScripts("${SOLJSON_URI}");
+
+  var moduleArgs = {
+    wasmBinary: (function () {
+      var xhr = new XMLHttpRequest();
+      xhr.open("GET", "${RESOLC_WASM_URI}", false);
+      xhr.responseType = "arraybuffer";
+      xhr.send(null);
+      return new Uint8Array(xhr.response);
+    })(),
+    soljson: Module
+  };
+} else {
+  console.log("Not a WebWorker, skipping Soljson and WASM loading.");
+}
 
 ${resolcJs}