chromium support

.gitea/workflows/release.yml

@@ -1,4 +1,4 @@
-name: Release unsigned Firefox extension
+name: Release Firefox and Chromium extensions
 
 on:
   release:
@@ -11,7 +11,7 @@ permissions:
 
 jobs:
   package-and-attach:
-    name: Package and attach unsigned XPI
+    name: Package and attach browser extensions
     runs-on: ubuntu-latest
     timeout-minutes: 10
 
@@ -30,14 +30,14 @@ jobs:
       - name: Run automated checks
         run: npm test
 
-      - name: Build unsigned release archive
+      - name: Build unsigned release archives
         env:
           GITEA_RELEASE_TAG: ${{ gitea.event.release.tag_name }}
         run: npm run package -- --version "${GITEA_RELEASE_TAG}" --output-dir dist
 
       - name: Verify release checksum
         working-directory: dist
-        run: sha256sum --check *.xpi.sha256
+        run: sha256sum --check *.sha256
 
       - name: Attach release assets
         env:
@@ -47,7 +47,7 @@ jobs:
           GITEA_RELEASE_ID: ${{ gitea.event.release.id }}
         run: |
           set -eu
-          for asset in dist/*.xpi dist/*.xpi.sha256; do
+          for asset in dist/*.xpi dist/*.xpi.sha256 dist/*-chromium.zip dist/*-chromium.zip.sha256; do
             name="$(basename "${asset}")"
             curl --fail-with-body --silent --show-error \
               --request POST \

README.md

@@ -1,11 +1,13 @@
 # Glagolify
 
-Glagolify is a small Firefox extension that turns Russian Cyrillic text on webpages into Glagolitic. Switch it off and the original text comes back—no reload required.
+Glagolify is a small Firefox and Chromium extension that turns Russian Cyrillic text on webpages into Glagolitic. Switch it off and the original text comes back—no reload required.
 
 Choose from four letter styles: **Round**, **Angular Sans**, **Historical Angular**, and **Missal Angular**. Glagolify also handles text added after a page loads while leaving text fields and editors alone.
 
 ## Install
 
+### Firefox
+
 Glagolify requires Firefox 142 or newer.
 
 1. Download the latest `.xpi` from [Releases](https://git.krtss.de/StanPonomarev/glagolify/releases).
@@ -15,8 +17,33 @@ Glagolify requires Firefox 142 or newer.
 
 Release builds are currently unsigned, so regular Firefox installs them temporarily and removes them when Firefox restarts.
 
+### Chromium
+
+Glagolify requires Chromium 102 or newer.
+
+1. Download and extract the latest `-chromium.zip` from [Releases](https://git.krtss.de/StanPonomarev/glagolify/releases).
+2. Open `chrome://extensions` in Chromium and enable **Developer mode**.
+3. Select **Load unpacked** and choose the extracted directory.
+
 ## Use
 
 Open a webpage, click the Glagolify toolbar icon, choose a style, and select **Enable Glagolitic**. Select **Restore Cyrillic** when you want the original text back.
 
-Glagolify transliterates letters; it does not translate language. Firefox settings pages, browser UI, and other protected pages cannot be changed.
+Glagolify transliterates letters; it does not translate language. Browser settings pages, browser UI, and other protected pages cannot be changed.
+
+## Build
+
+Node.js 22 or newer is required. The build has no third-party dependencies.
+
+```sh
+npm test
+npm run package
+```
+
+`npm run package` creates both `dist/glagolify-<version>.xpi` for Firefox and `dist/glagolify-<version>-chromium.zip`, with a `.sha256` file beside each archive. Use `npm run package:firefox` or `npm run package:chromium` to build only one target. A release version and output directory can be supplied to any command, for example:
+
+```sh
+npm run package:chromium -- --version v1.2.3 --output-dir dist
+```
+
+The checked-in manifest remains the Firefox Manifest V2 source. The Chromium package command converts it to Manifest V3 and uses the shared runtime files.

background.js

@@ -2,6 +2,7 @@
   "use strict";
 
   const FONT_STYLE_KEY = "glagolifyFontStyle";
+  const TAB_STATES_KEY = "glagolifyTabStates";
   const FONT_STYLES = new Set(["round", "angular-sans", "angular", "missal-angular"]);
   const DEFAULT_FONT_STYLE = "round";
 
@@ -13,14 +14,35 @@
         if (stored && FONT_STYLES.has(stored[FONT_STYLE_KEY])) {
           fontStyle = stored[FONT_STYLE_KEY];
         }
-        return fontStyle;
       })
-      .catch(() => fontStyle);
+      .catch(() => undefined);
+    const tabStatesReady = Promise.resolve(api.storage.session.get(TAB_STATES_KEY))
+      .then((stored) => {
+        const states = stored && stored[TAB_STATES_KEY];
+        if (!states || typeof states !== "object" || Array.isArray(states)) {
+          return;
+        }
+
+        for (const [storedTabId, enabled] of Object.entries(states)) {
+          const tabId = Number(storedTabId);
+          if (validTabId(tabId) && typeof enabled === "boolean") {
+            tabStates.set(tabId, enabled);
+          }
+        }
+      })
+      .catch(() => undefined);
+    const controllerReady = Promise.all([fontStyleReady, tabStatesReady]);
 
     function validTabId(tabId) {
       return Number.isInteger(tabId) && tabId >= 0;
     }
 
+    async function persistTabStates() {
+      await api.storage.session.set({
+        [TAB_STATES_KEY]: Object.fromEntries(tabStates)
+      });
+    }
+
     async function broadcast(tabId, enabled) {
       await fontStyleReady;
       try {
@@ -35,14 +57,14 @@
       }
     }
 
-    api.runtime.onMessage.addListener((message, sender) => {
+    function handleMessage(message, sender) {
       if (!message || typeof message.type !== "string") {
         return undefined;
       }
 
       if (message.type === "glagolify:document-ready") {
         const tabId = sender && sender.tab && sender.tab.id;
-        return fontStyleReady.then(() => ({
+        return controllerReady.then(() => ({
           enabled: validTabId(tabId) && tabStates.get(tabId) === true,
           fontStyle
         }));
@@ -50,7 +72,7 @@
 
       if (message.type === "glagolify:get-tab-state") {
         const tabId = message.tabId;
-        return fontStyleReady.then(async () => {
+        return controllerReady.then(async () => {
           if (!validTabId(tabId)) {
             return { enabled: false, available: false, fontStyle };
           }
@@ -64,15 +86,16 @@
       if (message.type === "glagolify:set-tab-enabled") {
         const tabId = message.tabId;
         if (!validTabId(tabId) || typeof message.enabled !== "boolean") {
-          return fontStyleReady.then(() => ({
+          return controllerReady.then(() => ({
             enabled: false,
             available: false,
             fontStyle
           }));
         }
 
-        return fontStyleReady.then(async () => {
+        return controllerReady.then(async () => {
           tabStates.set(tabId, message.enabled);
+          await persistTabStates();
           const available = await broadcast(tabId, message.enabled);
           return {
             enabled: message.enabled,
@@ -84,10 +107,10 @@
 
       if (message.type === "glagolify:set-font-style") {
         if (!FONT_STYLES.has(message.fontStyle)) {
-          return fontStyleReady.then(() => ({ fontStyle, accepted: false }));
+          return controllerReady.then(() => ({ fontStyle, accepted: false }));
         }
 
-        return fontStyleReady.then(async () => {
+        return controllerReady.then(async () => {
           await api.storage.local.set({ [FONT_STYLE_KEY]: message.fontStyle });
           fontStyle = message.fontStyle;
           await Promise.all(
@@ -100,24 +123,46 @@
       }
 
       return undefined;
+    }
+
+    api.runtime.onMessage.addListener((message, sender, sendResponse) => {
+      const response = handleMessage(message, sender);
+      if (response === undefined) {
+        return false;
+      }
+
+      Promise.resolve(response).then(
+        (value) => sendResponse(value),
+        () => sendResponse(undefined)
+      );
+      return true;
     });
 
-    api.tabs.onRemoved.addListener((tabId) => {
-      tabStates.delete(tabId);
+    api.tabs.onRemoved.addListener(async (tabId) => {
+      await tabStatesReady;
+      if (tabStates.delete(tabId)) {
+        await persistTabStates();
+      }
     });
 
     return {
       tabStates,
       broadcast,
-      fontStyleReady,
+      controllerReady,
       getFontStyle: () => fontStyle
     };
   }
 
   const exported = Object.freeze({ createBackgroundController });
 
-  if (typeof browser === "object" && browser.runtime && browser.tabs) {
-    createBackgroundController(browser);
+  const extensionApi =
+    typeof browser === "object"
+      ? browser
+      : typeof chrome === "object"
+        ? chrome
+        : null;
+  if (extensionApi && extensionApi.runtime && extensionApi.tabs) {
+    createBackgroundController(extensionApi);
   }
 
   if (typeof module === "object" && module.exports) {

content.js

@@ -1,6 +1,8 @@
 (function () {
   "use strict";
 
+  const api = typeof browser === "object" ? browser : chrome;
+
   const EXCLUDED_ANCESTORS = "head, script, style, noscript, template, textarea, select, option";
   const FONT_FAMILIES = Object.freeze({
     round: '"Glagolify Shafarik Round"',
@@ -330,14 +332,15 @@
     return { enabled };
   }
 
-  browser.runtime.onMessage.addListener((message) => {
+  api.runtime.onMessage.addListener((message, sender, sendResponse) => {
     if (!message || message.type !== "glagolify:set-enabled" || typeof message.enabled !== "boolean") {
-      return undefined;
+      return false;
     }
-    return Promise.resolve(setEnabled(message.enabled, message.fontStyle));
+    sendResponse(setEnabled(message.enabled, message.fontStyle));
+    return false;
   });
 
-  browser.runtime.sendMessage({ type: "glagolify:document-ready" })
+  api.runtime.sendMessage({ type: "glagolify:document-ready" })
     .then((response) => {
       setEnabled(Boolean(response && response.enabled), response && response.fontStyle);
     })

package.json

@@ -1,10 +1,12 @@
 {
-  "name": "glagolify-firefox-extension",
+  "name": "glagolify-extension",
   "version": "1.1.0",
   "private": true,
-  "description": "A dependency-free Firefox extension for toggling modern Russian text to Glagolitic.",
+  "description": "A dependency-free Firefox and Chromium extension for toggling modern Russian text to Glagolitic.",
   "scripts": {
     "package": "node scripts/package-extension.js",
+    "package:firefox": "node scripts/package-extension.js --target firefox",
+    "package:chromium": "node scripts/package-extension.js --target chromium",
     "test": "node --test"
   }
 }

popup.js

@@ -1,6 +1,8 @@
 (function () {
   "use strict";
 
+  const api = typeof browser === "object" ? browser : chrome;
+
   const status = document.getElementById("status");
   const toggle = document.getElementById("toggle");
   const fontStyleInputs = [...document.querySelectorAll('input[name="font-style"]')];
@@ -39,11 +41,11 @@
     toggle.disabled = true;
     toggle.setAttribute("aria-pressed", "false");
     toggle.textContent = "Unavailable on this page";
-    status.textContent = "Firefox protects this page from extensions.";
+    status.textContent = "The browser protects this page from extensions.";
   }
 
   async function askBackground(type, extra = {}) {
-    return browser.runtime.sendMessage({ type, ...extra });
+    return api.runtime.sendMessage({ type, ...extra });
   }
 
   toggle.addEventListener("click", async () => {
@@ -104,7 +106,7 @@
 
   async function initialize() {
     try {
-      const tabs = await browser.tabs.query({ active: true, currentWindow: true });
+      const tabs = await api.tabs.query({ active: true, currentWindow: true });
       if (!tabs[0] || typeof tabs[0].id !== "number") {
         showUnavailable();
         return;

scripts/package-extension.js

@@ -5,7 +5,7 @@ const { mkdir, readFile, writeFile } = require("node:fs/promises");
 const path = require("node:path");
 const { deflateRawSync } = require("node:zlib");
 
-const ARCHIVE_FILES = Object.freeze([
+const FIREFOX_ARCHIVE_FILES = Object.freeze([
   "background.js",
   "content.css",
   "content.js",
@@ -23,6 +23,14 @@ const ARCHIVE_FILES = Object.freeze([
   "popup.js",
   "transliterate.js"
 ]);
+const CHROMIUM_ARCHIVE_FILES = Object.freeze([
+  ...FIREFOX_ARCHIVE_FILES.map((relativePath) =>
+    relativePath.endsWith(".svg") ? relativePath.replace(/\.svg$/, ".png") : relativePath
+  ),
+  "icons/icon-128.png",
+  "icons/icon-48.svg"
+]);
+const TARGETS = new Set(["firefox", "chromium"]);
 
 const VERSION_PATTERN = /^(0|[1-9][0-9]{0,8})(\.(0|[1-9][0-9]{0,8})){0,3}$/;
 const UTF8_FLAG = 0x0800;
@@ -46,6 +54,47 @@ function normalizeVersion(value) {
   return version;
 }
 
+function createManifest(contents, version, target) {
+  const manifest = JSON.parse(contents.toString("utf8"));
+  manifest.version = version;
+
+  if (target === "firefox") {
+    return manifest;
+  }
+
+  if (version.split(".").some((part) => Number(part) > 65535)) {
+    throw new Error(`Chromium extension version parts cannot exceed 65535: ${version}`);
+  }
+
+  manifest.manifest_version = 3;
+  manifest.minimum_chrome_version = "102";
+  delete manifest.browser_specific_settings;
+  manifest.host_permissions = manifest.permissions.filter(
+    (permission) => permission === "<all_urls>" || permission.includes("://")
+  );
+  manifest.permissions = manifest.permissions.filter(
+    (permission) => !manifest.host_permissions.includes(permission)
+  );
+  manifest.background = { service_worker: "background.js" };
+  manifest.action = manifest.browser_action;
+  delete manifest.browser_action;
+  manifest.web_accessible_resources = [
+    {
+      resources: manifest.web_accessible_resources,
+      matches: ["<all_urls>"]
+    }
+  ];
+
+  for (const icons of [manifest.icons, manifest.action.default_icon]) {
+    for (const size of Object.keys(icons)) {
+      icons[size] = icons[size].replace(/\.svg$/, ".png");
+    }
+  }
+  manifest.icons["128"] = "icons/icon-128.png";
+
+  return manifest;
+}
+
 function crc32(buffer) {
   let crc = 0xffffffff;
 
@@ -122,19 +171,29 @@ function createZip(entries) {
   return Buffer.concat([...localRecords, centralDirectory, endRecord]);
 }
 
-async function packageExtension({ rootDirectory, outputDirectory, version: requestedVersion }) {
+async function packageExtension({
+  rootDirectory,
+  outputDirectory,
+  target = "firefox",
+  version: requestedVersion
+}) {
+  if (!TARGETS.has(target)) {
+    throw new Error(`Unknown extension target: ${target}`);
+  }
+
   const packageMetadata = JSON.parse(
     await readFile(path.join(rootDirectory, "package.json"), "utf8")
   );
   const version = normalizeVersion(requestedVersion ?? packageMetadata.version);
+  const archiveFiles =
+    target === "firefox" ? FIREFOX_ARCHIVE_FILES : CHROMIUM_ARCHIVE_FILES;
   const entries = [];
 
-  for (const relativePath of ARCHIVE_FILES) {
+  for (const relativePath of archiveFiles) {
     let contents = await readFile(path.join(rootDirectory, relativePath));
 
     if (relativePath === "manifest.json") {
-      const manifest = JSON.parse(contents.toString("utf8"));
-      manifest.version = version;
+      const manifest = createManifest(contents, version, target);
       contents = Buffer.from(`${JSON.stringify(manifest, null, 2)}\n`);
     }
 
@@ -142,7 +201,10 @@ async function packageExtension({ rootDirectory, outputDirectory, version: reque
   }
 
   const archive = createZip(entries);
-  const archiveName = `glagolify-${version}.xpi`;
+  const archiveName =
+    target === "firefox"
+      ? `glagolify-${version}.xpi`
+      : `glagolify-${version}-chromium.zip`;
   const archivePath = path.join(outputDirectory, archiveName);
   const checksumPath = `${archivePath}.sha256`;
   const digest = createHash("sha256").update(archive).digest("hex");
@@ -151,17 +213,22 @@ async function packageExtension({ rootDirectory, outputDirectory, version: reque
   await writeFile(archivePath, archive);
   await writeFile(checksumPath, `${digest}  ${archiveName}\n`);
 
-  return { archiveName, archivePath, checksumPath, digest, version };
+  return { archiveName, archivePath, checksumPath, digest, target, version };
 }
 
 function parseArguments(arguments_) {
   let outputDirectory = "dist";
+  let target = "all";
   let version;
 
   for (let index = 0; index < arguments_.length; index += 1) {
     const argument = arguments_[index];
 
-    if (argument === "--version" || argument === "--output-dir") {
+    if (
+      argument === "--version" ||
+      argument === "--output-dir" ||
+      argument === "--target"
+    ) {
       const value = arguments_[index + 1];
       if (!value || value.startsWith("--")) {
         throw new Error(`${argument} requires a value.`);
@@ -169,8 +236,10 @@ function parseArguments(arguments_) {
 
       if (argument === "--version") {
         version = value;
-      } else {
+      } else if (argument === "--output-dir") {
         outputDirectory = value;
+      } else {
+        target = value;
       }
       index += 1;
     } else {
@@ -178,22 +247,31 @@ function parseArguments(arguments_) {
     }
   }
 
-  return { outputDirectory, version };
+  if (target !== "all" && !TARGETS.has(target)) {
+    throw new Error(`Unknown extension target: ${target}`);
+  }
+
+  return { outputDirectory, target, version };
 }
 
 async function main() {
   const rootDirectory = path.resolve(__dirname, "..");
   const options = parseArguments(process.argv.slice(2));
-  const result = await packageExtension({
-    rootDirectory,
-    outputDirectory: path.resolve(rootDirectory, options.outputDirectory),
-    version: options.version
-  });
+  const targets = options.target === "all" ? [...TARGETS] : [options.target];
 
-  process.stdout.write(
-    `Created ${path.relative(rootDirectory, result.archivePath)} for version ${result.version}\n` +
-      `SHA-256 ${result.digest}\n`
-  );
+  for (const target of targets) {
+    const result = await packageExtension({
+      rootDirectory,
+      outputDirectory: path.resolve(rootDirectory, options.outputDirectory),
+      target,
+      version: options.version
+    });
+
+    process.stdout.write(
+      `Created ${path.relative(rootDirectory, result.archivePath)} for ${target} ` +
+        `version ${result.version}\nSHA-256 ${result.digest}\n`
+    );
+  }
 }
 
 if (require.main === module) {
@@ -203,4 +281,9 @@ if (require.main === module) {
   });
 }
 
-module.exports = { ARCHIVE_FILES, normalizeVersion, packageExtension };
+module.exports = {
+  CHROMIUM_ARCHIVE_FILES,
+  FIREFOX_ARCHIVE_FILES,
+  normalizeVersion,
+  packageExtension
+};

tests/background.test.js

@@ -4,12 +4,14 @@ const test = require("node:test");
 const assert = require("node:assert/strict");
 const { createBackgroundController } = require("../background.js");
 
-function makeBrowser(initialStorage = {}) {
+function makeBrowser(initialStorage = {}, initialSessionStorage = {}) {
   let messageListener;
   let removedListener;
   const broadcasts = [];
   const stored = { ...initialStorage };
+  const sessionStored = { ...initialSessionStorage };
   const storageWrites = [];
+  const sessionWrites = [];
   const api = {
     runtime: {
       onMessage: {
@@ -27,6 +29,15 @@ function makeBrowser(initialStorage = {}) {
           storageWrites.push({ ...values });
           Object.assign(stored, values);
         }
+      },
+      session: {
+        async get(key) {
+          return { [key]: sessionStored[key] };
+        },
+        async set(values) {
+          sessionWrites.push(structuredClone(values));
+          Object.assign(sessionStored, structuredClone(values));
+        }
       }
     },
     tabs: {
@@ -45,13 +56,24 @@ function makeBrowser(initialStorage = {}) {
   return {
     api,
     broadcasts,
+    sessionStored,
+    sessionWrites,
     stored,
     storageWrites,
     send(message, sender = {}) {
-      return messageListener(message, sender);
+      return new Promise((resolve) => {
+        let responded = false;
+        const keepChannelOpen = messageListener(message, sender, (response) => {
+          responded = true;
+          resolve(response);
+        });
+        if (!keepChannelOpen && !responded) {
+          resolve(undefined);
+        }
+      });
     },
     remove(tabId) {
-      removedListener(tabId);
+      return removedListener(tabId);
     }
   };
 }
@@ -91,10 +113,41 @@ test("owns absolute state per tab and supplies it to new frames", async () => {
     { enabled: false, fontStyle: "round" }
   );
 
-  fake.remove(17);
+  await fake.remove(17);
   assert.equal(controller.tabStates.has(17), false);
 });
 
+test("restores tab state after an MV3 background worker restart", async () => {
+  const firstWorker = makeBrowser();
+  createBackgroundController(firstWorker.api);
+  await firstWorker.send({
+    type: "glagolify:set-tab-enabled",
+    tabId: 23,
+    enabled: true
+  });
+
+  assert.deepEqual(firstWorker.sessionStored, {
+    glagolifyTabStates: { 23: true }
+  });
+
+  const restartedWorker = makeBrowser({}, firstWorker.sessionStored);
+  createBackgroundController(restartedWorker.api);
+  assert.deepEqual(
+    await restartedWorker.send(
+      { type: "glagolify:document-ready" },
+      { tab: { id: 23 } }
+    ),
+    { enabled: true, fontStyle: "round" }
+  );
+  assert.deepEqual(
+    await restartedWorker.send({
+      type: "glagolify:get-tab-state",
+      tabId: 23
+    }),
+    { enabled: true, available: true, fontStyle: "round" }
+  );
+});
+
 test("keeps states isolated between tabs and reports protected tabs", async () => {
   const fake = makeBrowser();
   createBackgroundController(fake.api);

tests/package-extension.test.js

@@ -8,7 +8,8 @@ const os = require("node:os");
 const path = require("node:path");
 const { inflateRawSync } = require("node:zlib");
 const {
-  ARCHIVE_FILES,
+  CHROMIUM_ARCHIVE_FILES,
+  FIREFOX_ARCHIVE_FILES,
   normalizeVersion,
   packageExtension
 } = require("../scripts/package-extension.js");
@@ -72,8 +73,12 @@ test("builds a deterministic unsigned XPI with the release version and runtime f
   const entries = readZipEntries(firstArchive);
 
   assert.equal(first.archiveName, "glagolify-9.8.7.xpi");
-  assert.deepEqual([...entries.keys()], [...ARCHIVE_FILES]);
-  assert.equal(JSON.parse(entries.get("manifest.json")).version, "9.8.7");
+  assert.deepEqual([...entries.keys()], [...FIREFOX_ARCHIVE_FILES]);
+  const manifest = JSON.parse(entries.get("manifest.json"));
+  assert.equal(manifest.version, "9.8.7");
+  assert.equal(manifest.manifest_version, 2);
+  assert.equal(manifest.background.persistent, true);
+  assert.equal(manifest.browser_action.default_popup, "popup.html");
   assert.equal(entries.has("package.json"), false);
   assert.equal(entries.has("tests/package-extension.test.js"), false);
   assert.deepEqual(firstArchive, secondArchive);
@@ -84,3 +89,76 @@ test("builds a deterministic unsigned XPI with the release version and runtime f
     `${digest}  glagolify-9.8.7.xpi\n`
   );
 });
+
+test("builds a Chromium MV3 ZIP with Chromium manifest fields and raster icons", async (context) => {
+  const rootDirectory = path.resolve(__dirname, "..");
+  const outputDirectory = await mkdtemp(path.join(os.tmpdir(), "glagolify-chromium-"));
+  context.after(() => rm(outputDirectory, { recursive: true, force: true }));
+
+  const result = await packageExtension({
+    rootDirectory,
+    outputDirectory,
+    target: "chromium",
+    version: "v4.5.6"
+  });
+  const archive = await readFile(result.archivePath);
+  const entries = readZipEntries(archive);
+  const manifest = JSON.parse(entries.get("manifest.json"));
+
+  assert.equal(result.archiveName, "glagolify-4.5.6-chromium.zip");
+  assert.deepEqual([...entries.keys()], [...CHROMIUM_ARCHIVE_FILES]);
+  assert.equal(manifest.manifest_version, 3);
+  assert.equal(manifest.minimum_chrome_version, "102");
+  assert.equal(manifest.version, "4.5.6");
+  assert.deepEqual(manifest.permissions, ["activeTab", "storage"]);
+  assert.deepEqual(manifest.host_permissions, ["<all_urls>"]);
+  assert.deepEqual(manifest.background, { service_worker: "background.js" });
+  assert.equal(manifest.action.default_popup, "popup.html");
+  assert.equal("browser_action" in manifest, false);
+  assert.equal("browser_specific_settings" in manifest, false);
+  assert.deepEqual(manifest.web_accessible_resources, [
+    {
+      resources: [
+        "fonts/NotoSansGlagolitic-Regular.ttf",
+        "fonts/Shafarik-Regular.ttf"
+      ],
+      matches: ["<all_urls>"]
+    }
+  ]);
+  assert.equal(manifest.icons["128"], "icons/icon-128.png");
+
+  for (const relativePath of CHROMIUM_ARCHIVE_FILES.filter((name) =>
+    name.endsWith(".png")
+  )) {
+    assert.deepEqual(
+      entries.get(relativePath).subarray(0, 8),
+      Buffer.from([0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a])
+    );
+  }
+  const popup = entries.get("popup.html").toString("utf8");
+  for (const [, relativePath] of popup.matchAll(/\b(?:href|src)="([^"]+)"/g)) {
+    assert.equal(
+      entries.has(relativePath),
+      true,
+      `${relativePath} referenced by popup.html should be packaged`
+    );
+  }
+
+  const digest = createHash("sha256").update(archive).digest("hex");
+  assert.equal(
+    await readFile(result.checksumPath, "utf8"),
+    `${digest}  glagolify-4.5.6-chromium.zip\n`
+  );
+});
+
+test("rejects Chromium version components outside the MV3 manifest range", async () => {
+  await assert.rejects(
+    packageExtension({
+      rootDirectory: path.resolve(__dirname, ".."),
+      outputDirectory: os.tmpdir(),
+      target: "chromium",
+      version: "65536"
+    }),
+    /cannot exceed 65535/
+  );
+});