async createReloadManagerExtension()

in src/extension-runners/chromium.js [268:334]
42 lines of code
3 McCabe index (conditional complexity)

  async createReloadManagerExtension() {
    const tmpDir = new TempDir();
    await tmpDir.create();
    this.registerCleanup(() => tmpDir.remove());

    const extPath = path.join(
      tmpDir.path(),
      `reload-manager-extension-${Date.now()}`,
    );

    log.debug(`Creating reload-manager-extension in ${extPath}`);

    await fs.mkdir(extPath, { recursive: true });

    await fs.writeFile(
      path.join(extPath, 'manifest.json'),
      JSON.stringify({
        manifest_version: 2,
        name: 'web-ext Reload Manager Extension',
        version: '1.0',
        permissions: ['management', 'tabs'],
        background: {
          scripts: ['bg.js'],
        },
      }),
    );

    const wssInfo = this.wss.address();

    const bgPage = `(function bgPage() {
      async function getAllDevExtensions() {
        const allExtensions = await new Promise(
          r => chrome.management.getAll(r));

        return allExtensions.filter((extension) => {
          return extension.enabled &&
            extension.installType === "development" &&
            extension.id !== chrome.runtime.id;
        });
      }

      const setEnabled = (extensionId, value) =>
        chrome.runtime.id == extensionId ?
        new Promise.resolve() :
        new Promise(r => chrome.management.setEnabled(extensionId, value, r));

      async function reloadExtension(extensionId) {
        await setEnabled(extensionId, false);
        await setEnabled(extensionId, true);
      }

      const ws = new window.WebSocket(
        "ws://${wssInfo.address}:${wssInfo.port}");

      ws.onmessage = async (evt) => {
        const msg = JSON.parse(evt.data);
        if (msg.type === 'webExtReloadAllExtensions') {
          const devExtensions = await getAllDevExtensions();
          await Promise.all(devExtensions.map(ext => reloadExtension(ext.id)));
          ws.send(JSON.stringify({ type: 'webExtReloadExtensionComplete' }));
        }
      };
    })()`;

    await fs.writeFile(path.join(extPath, 'bg.js'), bgPage);
    return extPath;
  }