avoid await top level (#118)

* avoid await top level

* Update packages/jest-environment-miniflare/test/index.spec.ts

Co-authored-by: MrBBot <[email protected]>

* Update rust.ts

* Update index.spec.ts

* Update rust.ts

Co-authored-by: MrBBot <[email protected]>

Author: Kikobeats

packages/core/src/plugins/rust.ts

@@ -3,28 +3,30 @@ import assert from "assert";
 import fs from "fs/promises";
 import path from "path";
 
-// 1. Load package.json file generated by wasm-bindgen containing filenames
-const pkg: { files: string[] } = JSON.parse(
-  await fs.readFile(path.join("pkg", "package.json"), "utf8")
-);
+;(async () => {
+  // 1. Load package.json file generated by wasm-bindgen containing filenames
+  const pkg: { files: string[] } = JSON.parse(
+    await fs.readFile(path.join("pkg", "package.json"), "utf8")
+  );
 
-// 2. Concatenate wasm-bindgen glue and worker code into worker/generated/script.js
-const glueName = pkg.files.find((file) => file.endsWith(".js"));
-assert(glueName);
-const glueCode = await fs.readFile(path.join("pkg", glueName), "utf8");
-const code = await fs.readFile(path.join("worker", "worker.js"), "utf8");
-const generatedDir = path.join("worker", "generated");
-await fs.mkdir(generatedDir, { recursive: true });
-await fs.writeFile(
-  path.join(generatedDir, "script.js"),
-  `${glueCode} ${code}`,
-  "utf8"
-);
+  // 2. Concatenate wasm-bindgen glue and worker code into worker/generated/script.js
+  const glueName = pkg.files.find((file) => file.endsWith(".js"));
+  assert(glueName);
+  const glueCode = await fs.readFile(path.join("pkg", glueName), "utf8");
+  const code = await fs.readFile(path.join("worker", "worker.js"), "utf8");
+  const generatedDir = path.join("worker", "generated");
+  await fs.mkdir(generatedDir, { recursive: true });
+  await fs.writeFile(
+    path.join(generatedDir, "script.js"),
+    `${glueCode} ${code}`,
+    "utf8"
+  );
 
-// 3. Copy *_bg.wasm file into worker/generated/script.wasm
-const wasmName = pkg.files.find((file) => file.endsWith(".wasm"));
-assert(wasmName);
-await fs.copyFile(
-  path.join("pkg", wasmName),
-  path.join(generatedDir, "script.wasm")
-);
+  // 3. Copy *_bg.wasm file into worker/generated/script.wasm
+  const wasmName = pkg.files.find((file) => file.endsWith(".wasm"));
+  assert(wasmName);
+  await fs.copyFile(
+    path.join("pkg", wasmName),
+    path.join(generatedDir, "script.wasm")
+  );
+})();

packages/jest-environment-miniflare/test/index.spec.ts

@@ -22,13 +22,14 @@ async function findJest() {
   return path.resolve(pkgPath, pkg.bin);
 }
 
-const jestPath = await findJest();
+const jestPathPromise = findJest();
 
-function runJest(
+async function runJest(
   match: string,
   options: MiniflareOptions = {},
   cwd = fixturesPath
 ): Promise<[exitCode: number, output: string]> {
+  const jestPath = await jestPathPromise;
   return new Promise((resolve) => {
     const jest = childProcess.spawn(
       process.execPath,