async startFirefoxInstance()

in src/extension-runners/firefox-desktop.js [182:263]
72 lines of code
13 McCabe index (conditional complexity)

  async startFirefoxInstance() {
    const {
      browserConsole,
      devtools,
      extensions,
      firefoxBinary,
      preInstall,
      startUrl,
      firefoxApp,
      firefoxClient,
      args,
    } = this.params;

    const binaryArgs = [];

    if (browserConsole) {
      binaryArgs.push('-jsconsole');
    }
    if (startUrl) {
      const urls = Array.isArray(startUrl) ? startUrl : [startUrl];
      for (const url of urls) {
        binaryArgs.push('--url', url);
      }
    }

    if (args) {
      binaryArgs.push(...args);
    }

    this.runningInfo = await firefoxApp.run(this.profile, {
      firefoxBinary,
      binaryArgs,
      extensions,
      devtools,
    });

    this.runningInfo.firefox.on('close', () => {
      for (const cleanupCb of this.cleanupCallbacks) {
        try {
          cleanupCb();
        } catch (error) {
          log.error(`Exception on executing cleanup callback: ${error}`);
        }
      }
    });

    if (!preInstall) {
      const remoteFirefox = (this.remoteFirefox = await firefoxClient({
        port: this.runningInfo.debuggerPort,
      }));

      // Install all the temporary addons.
      for (const extension of extensions) {
        try {
          const addonId = await remoteFirefox
            .installTemporaryAddon(extension.sourceDir, devtools)
            .then((installResult) => {
              return installResult.addon.id;
            });

          if (!addonId) {
            throw new WebExtError(
              'Unexpected missing addonId in the installAsTemporaryAddon result',
            );
          }

          this.reloadableExtensions.set(extension.sourceDir, addonId);
        } catch (error) {
          if (error instanceof RemoteTempInstallNotSupported) {
            log.debug(`Caught: ${String(error)}`);
            throw new WebExtError(
              'Temporary add-on installation is not supported in this version' +
                ' of Firefox (you need Firefox 49 or higher). For older Firefox' +
                ' versions, use --pre-install',
            );
          } else {
            throw error;
          }
        }
      }
    }
  }