32 lines
999 B
JavaScript
32 lines
999 B
JavaScript
const createRequestCancelledError = () => {
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const error = new Error('请求已取消')
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error.code = 'REQUEST_CANCELLED'
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return error
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}
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// 页面只持有控制器，不依赖各端 RequestTask 的实现差异。
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// 新请求会接管控制器；页面卸载时 abort() 会拒绝等待中的 Promise，
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// 避免已销毁页面继续处理成功回调。
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export const createRequestController = () => {
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let abortCurrent = null
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return {
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bind(abortRequest) {
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if (typeof abortRequest !== 'function') throw new TypeError('请求中止器必须是函数')
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if (abortCurrent) abortCurrent()
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abortCurrent = abortRequest
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},
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release(abortRequest) {
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if (abortCurrent === abortRequest) abortCurrent = null
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},
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abort() {
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const abortRequest = abortCurrent
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abortCurrent = null
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if (abortRequest) abortRequest()
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}
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}
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}
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export const isRequestCancelled = (error) => error?.code === 'REQUEST_CANCELLED'
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export { createRequestCancelledError }
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