It is now possible to output as a Chrome/Firefox extension

build.js

@@ -0,0 +1,67 @@
+import archiver from "archiver";
+import fs from "fs-extra";
+import path from "path";
+
+const extName = "auto-hide-next-up-card";
+
+const distDir = "dist";
+const chromeExtDir = path.join(distDir, "chrome");
+const firefoxExtDir = path.join(distDir, "firefox");
+
+const pkgMetadata = JSON.parse(fs.readFileSync("package.json", "utf-8"));
+const pkgVersion = pkgMetadata.version;
+const baseArchiveName = `${extName}_${pkgVersion}`;
+
+const prepareSrc = (parentDir) => {
+  if (!fs.existsSync(parentDir)) {
+    fs.mkdirSync(parentDir, { recursive: true });
+  }
+  const targetDir = path.join(parentDir, "ext");
+  if (fs.existsSync(targetDir)) {
+    fs.rmSync(targetDir, { recursive: true });
+  }
+  fs.copySync("src/", targetDir);
+  fs.copySync("LICENSE", path.join(targetDir, "LICENSE"));
+  return targetDir;
+};
+
+const buildChromeExt = async () => {
+  const targetDir = prepareSrc(chromeExtDir);
+  const archiveName = `${baseArchiveName}_chrome.zip`;
+  const archivePath = path.join(chromeExtDir, archiveName);
+
+  const output = fs.createWriteStream(archivePath);
+  const archive = archiver("zip", {
+    zlib: { level: 9 },
+  });
+  archive.directory(targetDir, false);
+  archive.pipe(output);
+  await archive.finalize();
+  console.log(`created ${archivePath}`);
+};
+
+const buildFirefoxExt = async () => {
+  const targetDir = prepareSrc(firefoxExtDir);
+  const archiveName = `${baseArchiveName}_firefox.zip`;
+  const archivePath = path.join(firefoxExtDir, archiveName);
+  const manifestPath = path.join(targetDir, "manifest.json");
+
+  fs.rmSync(manifestPath);
+  fs.copySync("misc/manifest.firefox.json", manifestPath);
+
+  const output = fs.createWriteStream(archivePath);
+  const archive = archiver("zip", {
+    zlib: { level: 9 },
+  });
+  archive.directory(targetDir, false);
+  archive.pipe(output);
+  await archive.finalize();
+  console.log(`created ${archivePath}`);
+};
+
+const main = async () => {
+  await buildChromeExt();
+  await buildFirefoxExt();
+};
+
+main();

misc/manifest.firefox.json

@@ -0,0 +1,49 @@
+{
+  "manifest_version": 3,
+  "name": "Auto hide next up card for Amazon Prime Video",
+  "version": "2.1.1",
+  "default_locale": "en",
+  "description": "__MSG_desc__",
+  "icons": {
+    "16": "icons/16.png",
+    "32": "icons/32.png",
+    "48": "icons/48.png",
+    "128": "icons/128.png"
+  },
+  "content_scripts": [
+    {
+      "matches": [
+        "https://*.amazon.co.jp/*",
+        "https://*.amazon.com/*",
+        "https://*.amazon.ae/*",
+        "https://*.amazon.co.uk/*",
+        "https://*.amazon.it/*",
+        "https://*.amazon.in/*",
+        "https://*.amazon.eg/*",
+        "https://*.amazon.com.au/*",
+        "https://*.amazon.nl/*",
+        "https://*.amazon.ca/*",
+        "https://*.amazon.sa/*",
+        "https://*.amazon.sg/*",
+        "https://*.amazon.se/*",
+        "https://*.amazon.es/*",
+        "https://*.amazon.de/*",
+        "https://*.amazon.com.tr/*",
+        "https://*.amazon.com.br/*",
+        "https://*.amazon.fr/*",
+        "https://*.amazon.com.be/*",
+        "https://*.amazon.pl/*",
+        "https://*.amazon.com.mx/*",
+        "https://*.amazon.cn/*",
+        "https://*.primevideo.com/*"
+      ],
+      "js": ["main.js"]
+    }
+  ],
+  "browser_specific_settings": {
+    "gecko": {
+      "id": "auto-hide-next-up-card-for-amazon-prime-video@ryo-fujinone.net",
+      "strict_min_version": "121.0"
+    }
+  }
+}

package.json

@@ -4,13 +4,18 @@
   "private": true,
   "type": "module",
   "scripts": {
+    "build": "run-s build:ext build:userscript",
+    "build:ext": "node build.js",
     "build:userscript": "rollup --config rollup.config.js",
     "dev:firefox": "env-cmd -f .env.firefox web-ext run",
     "dev:chrome": "env-cmd -x -f .env.chrome web-ext run -t chromium --chromium-binary=$CHROMIUM_BINARY_PATH --chromium-profile=$CHROMIUM_PROFILE_PATH",
     "dev:userscript": "env-cmd -f .env.userscript rollup --config rollup.config.js --watch"
   },
   "devDependencies": {
+    "archiver": "^7.0.1",
     "env-cmd": "^10.1.0",
+    "fs-extra": "^11.2.0",
+    "npm-run-all": "^4.1.5",
     "rollup": "^4.13.0",
     "rollup-plugin-auto-reload": "^1.0.3",
     "userscript-metadata-generator": "^0.2.4",