adapters.js•1.97 kB
import utils from '../utils.js';
import httpAdapter from './http.js';
import xhrAdapter from './xhr.js';
import fetchAdapter from './fetch.js';
import AxiosError from "../core/AxiosError.js";
const knownAdapters = {
http: httpAdapter,
xhr: xhrAdapter,
fetch: fetchAdapter
}
utils.forEach(knownAdapters, (fn, value) => {
if (fn) {
try {
Object.defineProperty(fn, 'name', {value});
} catch (e) {
// eslint-disable-next-line no-empty
}
Object.defineProperty(fn, 'adapterName', {value});
}
});
const renderReason = (reason) => `- ${reason}`;
const isResolvedHandle = (adapter) => utils.isFunction(adapter) || adapter === null || adapter === false;
export default {
getAdapter: (adapters) => {
adapters = utils.isArray(adapters) ? adapters : [adapters];
const {length} = adapters;
let nameOrAdapter;
let adapter;
const rejectedReasons = {};
for (let i = 0; i < length; i++) {
nameOrAdapter = adapters[i];
let id;
adapter = nameOrAdapter;
if (!isResolvedHandle(nameOrAdapter)) {
adapter = knownAdapters[(id = String(nameOrAdapter)).toLowerCase()];
if (adapter === undefined) {
throw new AxiosError(`Unknown adapter '${id}'`);
}
}
if (adapter) {
break;
}
rejectedReasons[id || '#' + i] = adapter;
}
if (!adapter) {
const reasons = Object.entries(rejectedReasons)
.map(([id, state]) => `adapter ${id} ` +
(state === false ? 'is not supported by the environment' : 'is not available in the build')
);
let s = length ?
(reasons.length > 1 ? 'since :\n' + reasons.map(renderReason).join('\n') : ' ' + renderReason(reasons[0])) :
'as no adapter specified';
throw new AxiosError(
`There is no suitable adapter to dispatch the request ` + s,
'ERR_NOT_SUPPORT'
);
}
return adapter;
},
adapters: knownAdapters
}