我想知道是否有可能在JS中测试异步功能支持。
try {
async () => {}
}
catch (err) {
// No support
}
上述方法无效,因为它允许在Node v6中转义语法错误。
/secret/test.js:8
async () => {}
^
SyntaxError: Unexpected token (
那么您认为测试异步支持的最佳(如果存在)方法是什么?
答案 0 :(得分:2)
使用邪恶的评估
import { Form, Icon, Input, Button, Checkbox } from 'antd';
import {FormComponentProps} from 'antd/lib/form/Form';
const FormItem = Form.Item;
interface NormalLoginProps{}
class NormalLoginForm extends React.Component<NormalLoginProps & FormComponentProps> {
handleSubmit = (e) => {
e.preventDefault();
this.props.form.validateFields((err, values) => {
if (!err) {
console.log('Received values of form: ', values);
}
});
}
render() {
const { getFieldDecorator } = this.props.form;
return (
<Form onSubmit={this.handleSubmit} className="login-form">
<FormItem>
{getFieldDecorator('userName', {
rules: [{ required: true, message: 'Please input your username!' }],
})(
<Input prefix={<Icon type="user" style={{ color: 'rgba(0,0,0,.25)' }} />} placeholder="Username" />
)}
</FormItem>
<FormItem>
{getFieldDecorator('password', {
rules: [{ required: true, message: 'Please input your Password!' }],
})(
<Input prefix={<Icon type="lock" style={{ color: 'rgba(0,0,0,.25)' }} />} type="password" placeholder="Password" />
)}
</FormItem>
<FormItem>
{getFieldDecorator('remember', {
valuePropName: 'checked',
initialValue: true,
})(
<Checkbox>Remember me</Checkbox>
)}
<a className="login-form-forgot" href="">Forgot password</a>
<Button type="primary" htmlType="submit" className="login-form-button">
Log in
</Button>
Or <a href="">register now!</a>
</FormItem>
</Form>
);
}
}
const WrappedNormalLoginForm = Form.create<NormalLoginProps>()(NormalLoginForm);
ReactDOM.render(<WrappedNormalLoginForm />, mountNode);
注意,如果引擎支持async / await但不支持箭头表示法,则会失败,但是,我认为不存在这样的引擎