问题描述
我正在清理一个旧项目并将前端的 Angular 升级到 12,我从 IxJS 获得了一堆构建,这是一个已经存在一段时间的库:
./node_modules/ix/asynciterable/asynciterablex.mjs:31:10 - Error: Module parse failed: Unexpected token (31:10)
File was processed with these loaders:
* ./node_modules/@angular-devkit/build-angular/src/babel/webpack-loader.js
You may need an additional loader to handle the result of these loaders.
| let i = 0;
|
> for await (const item of source) {
| yield projection.call(thisArg,item,i++,signal);
| }
即使在我刚刚使用 Angular CLI 生成的干净的暂存器项目中也会发生这种情况,我只是将其放入 app.component.ts
以确保它命中库:
import { Component } from '@angular/core';
import * as aix from 'ix/asynciterable';
import * as aixop from 'ix/asynciterable/operators';
async function* source() {
yield 1;
yield 2;
yield 3;
}
async function title(): Promise<string> {
const parts = [];
for await (const y of aix
.from(source())
.pipe(aixop.map(async (x) => x * 2))) {
parts.push(String(y));
}
return parts.join();
}
@Component({
selector: 'app-root',templateUrl: './app.component.html',styleUrls: ['./app.component.scss'],})
export class AppComponent {
title = 'ng-scratch';
world!: Promise<string>;
ngOnInit() {
this.world = title();
}
}
并在 app.component.html
中输出:
Hello,{{world | async}}
奇怪的是,它只报告库中的错误;如果我将 title()
函数更改为 just:
async function title(): Promise<string> {
const parts = [];
for await (const y of source()) {
parts.push(String(y));
}
return parts.join();
}
有什么办法可以解决这个问题吗?
解决方法
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