67 lines
2.0 KiB
TypeScript
67 lines
2.0 KiB
TypeScript
import { WITH_DATA_RE } from '../constants/methods';
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import { isFunction, isString } from '../helpers/types';
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import { assert } from '../helpers/error';
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import { AxiosRequestConfig, AxiosResponse } from '../core/Axios';
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import { Cancel, isCancel, isCancelToken } from './cancel';
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import { flattenHeaders } from './flattenHeaders';
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import { AxiosTransformer, transformData } from './transformData';
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import { request } from './request';
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import { AxiosErrorResponse } from './createError';
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/**
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* 发送请求
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*
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* 校验配置，转换配置，转换数据，捕获取消请求。
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*
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* @param config 请求配置
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*/
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export function dispatchRequest(config: AxiosRequestConfig) {
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throwIfCancellationRequested(config);
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assert(isFunction(config.adapter), 'adapter 不是一个 function');
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assert(isString(config.url), 'url 不是一个 string');
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assert(isString(config.method), 'method 不是一个 string');
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config.headers = flattenHeaders(config);
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// 可以携带 data 的请求方法，转换 data
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// 否则，删除 data
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if (WITH_DATA_RE.test(config.method!)) {
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dataTransformer(config, config.transformRequest);
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} else {
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delete config.data;
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}
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function onSuccess(response: AxiosResponse) {
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throwIfCancellationRequested(config);
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dataTransformer(response, config.transformResponse);
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return response;
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}
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function onError(error: Cancel | AxiosErrorResponse) {
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if (!isCancel(error)) {
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throwIfCancellationRequested(config);
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dataTransformer(error.response, config.transformResponse);
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}
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return Promise.reject(error);
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}
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function dataTransformer<TData = unknown>(
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obj: { data?: TData; headers?: AnyObject },
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fn?: AxiosTransformer<TData>,
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) {
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obj.data = transformData(obj.data, obj.headers, fn);
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}
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return request(config).then(onSuccess, onError);
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}
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function throwIfCancellationRequested(config: AxiosRequestConfig) {
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const { cancelToken } = config;
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if (isCancelToken(cancelToken)) {
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cancelToken.throwIfRequested();
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}
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}
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