异步调用方法报错，提示“regeneratorRuntime is not defined”

奔跑的狮子

现象描述

使用异步调用await方法，客户端提示“regeneratorRuntime is not defined”，具体错误信息如下图所示：

行进的蜗牛

问题分析

对于await的方式调用需要开发者引入@babel/runtime/regenerator，示例代码如下：

<script>
const injectRef = Object.getPrototypeOf(global) || global;
// injection regeneratorRuntime
injectRef.regeneratorRuntime = require('@babel/runtime/regenerator');
module.exports = {
}
</script>

解决方法

在app.ux文件中起始位置加入上述代码声明即可，具体代码如下：

1. <script>

2. import push from "@service.push";

3. import device from '@system.device';

4. const injectRef = Object.getPrototypeOf(global) || global;

5. // injection regeneratorRuntime

6. injectRef.regeneratorRuntime = require('@babel/runtime/regenerator');

7. module.exports = {

8. data: {

9. hasSaved: "no"

10. },

11. onCreate() {

12. console.info("Application onCreate");

13. console.info("push服务提供商:" + push.getProvider());

14. this.hasSaved = "yes";

15. push.subscribe({

16. success: function (data) {

17. console.log("push.subscribe succeeded, regid=" + JSON.stringify(data));

18. },

19. fail: function (data, code) {

20. console.log("push.subscribe failed, result data=" + JSON.stringify(data) + ", code=" + code);

21. },

22. complete: function () {

23. console.log("push.subscribe completed");

24. }

25. });

26. this.testAsync();

27. },

28. async testAsync() {

29. try {

30. let res = await device.getDeviceId();

31. console.info("get device id " + JSON.stringify(res.data));

32. } catch (e) {

33. console.log("get device id error " + e.code);

34. }

35. },

36. onShow(options) {

37. //console.info("manifest全局数据2:" + this.$app.$data.baseUrl);

38. },

39. onDestroy() {

40. console.info("Application onDestroy");

41. },

42. dataApp: {

43. localeData: {}

44. }

45. };

46. </script>