Function exportVariable

github-actions/browserstack/set-browserstack-env.js:20652–20660

(name, val)

      this.processExitCode = 0;
      this.processExited = false;
      this.processStderr = false;
      this.delay = 1e4;
      this.done = false;
      this.timeout = null;
      if (!toolPath) {
        throw new Error("toolPath must not be empty");
      }
      this.options = options;
      this.toolPath = toolPath;
      if (options.delay) {
        this.delay = options.delay;
      }