extension: Convert tools to ESM

web/packages/extension/tools/.eslintrc.yaml

@@ -1,2 +1,5 @@
 env:
   node: true
+parserOptions:
+  ecmaVersion: 2022 # Needed for top-level-await.
+  sourceType: module

web/packages/extension/tools/package.json

@@ -0,0 +1,3 @@
+{
+    "type": "module"
+}

web/packages/extension/tools/sign_xpi.js

@@ -1,4 +1,7 @@
-const fs = require("fs");
+import fs from "fs/promises";
+import { createRequire } from "module";
+import tempDir from "temp-dir";
+import { signAddon } from "sign-addon";
 
 async function sign(
     apiKey,
@@ -8,8 +11,6 @@ async function sign(
     version,
     destination
 ) {
-    const { signAddon } = await import("sign-addon");
-    const tempDir = await import("temp-dir");
     const result = await signAddon({
         xpiPath: unsignedPath,
         version,
@@ -26,8 +27,8 @@ async function sign(
     if (result.downloadedFiles.length === 1) {
         // Copy the downloaded file to the destination.
         // (Avoid `rename` because it fails if the destination is on a different drive.)
-        fs.copyFileSync(result.downloadedFiles[0], destination);
-        fs.unlinkSync(result.downloadedFiles[0]);
+        await fs.copyFile(result.downloadedFiles[0], destination);
+        await fs.unlink(result.downloadedFiles[0]);
     } else {
         console.warn(
             "Unexpected downloads for signed Firefox extension, expected 1."
@@ -36,12 +37,14 @@ async function sign(
     }
 }
 
-(async () => {
+try {
     if (
         process.env.MOZILLA_API_KEY &&
         process.env.MOZILLA_API_SECRET &&
         process.env.FIREFOX_EXTENSION_ID
     ) {
+        // TODO: Import as a JSON module once it becomes stable.
+        const require = createRequire(import.meta.url);
         const { version } = require("../assets/manifest.json");
         await sign(
             process.env.MOZILLA_API_KEY,
@@ -56,8 +59,8 @@ async function sign(
             "Skipping signing of Firefox extension. To enable this, please provide MOZILLA_API_KEY, MOZILLA_API_SECRET and FIREFOX_EXTENSION_ID environment variables"
         );
     }
-})().catch((error) => {
+} catch (error) {
     console.error("Error while signing Firefox extension:");
     console.error(error);
     process.exit(-1);
-});
+}

web/packages/extension/tools/zip.js

@@ -1,11 +1,12 @@
-const fs = require("fs");
-const path = require("path");
-const archiver = require("archiver");
+import fs from "fs/promises";
+import path from "path";
+import url from "url";
+import archiver from "archiver";
 
 async function zip(source, destination) {
-    fs.mkdirSync(path.dirname(destination), { recursive: true });
-    const output = fs.createWriteStream(destination);
-    const archive = archiver("zip", {});
+    await fs.mkdir(path.dirname(destination), { recursive: true });
+    const output = (await fs.open(destination, "w")).createWriteStream();
+    const archive = archiver("zip");
 
     output.on("close", () => {
         console.log(
@@ -13,15 +14,15 @@ async function zip(source, destination) {
         );
     });
 
-    archive.on("error", (err) => {
-        throw err;
+    archive.on("error", (error) => {
+        throw error;
     });
 
-    archive.on("warning", (err) => {
-        if (err.code === "ENOENT") {
-            console.warn(`Warning whilst zipping extension: ${err}`);
+    archive.on("warning", (error) => {
+        if (error.code === "ENOENT") {
+            console.warn(`Warning whilst zipping extension: ${error}`);
         } else {
-            throw err;
+            throw error;
         }
     });
 
@@ -32,6 +33,5 @@ async function zip(source, destination) {
     await archive.finalize();
 }
 
-(async () => {
-    await zip(path.resolve(__dirname, "../assets/"), process.argv[2]);
-})();
+const assets = url.fileURLToPath(new URL("../assets/", import.meta.url));
+await zip(assets, process.argv[2]);