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e472a78 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 | import utils from '../utils.js';
import httpAdapter from './http.js';
import xhrAdapter from './xhr.js';
import * as fetchAdapter from './fetch.js';
import AxiosError from '../core/AxiosError.js';
/**
* Known adapters mapping.
* Provides environment-specific adapters for Axios:
* - `http` for Node.js
* - `xhr` for browsers
* - `fetch` for fetch API-based requests
*
* @type {Object<string, Function|Object>}
*/
const knownAdapters = {
http: httpAdapter,
xhr: xhrAdapter,
fetch: {
get: fetchAdapter.getFetch,
},
};
// Assign adapter names for easier debugging and identification
utils.forEach(knownAdapters, (fn, value) => {
if (fn) {
try {
// Null-proto descriptors so a polluted Object.prototype.get cannot turn
// these data descriptors into accessor descriptors on the way in.
Object.defineProperty(fn, 'name', { __proto__: null, value });
} catch (e) {
// eslint-disable-next-line no-empty
}
Object.defineProperty(fn, 'adapterName', { __proto__: null, value });
}
});
/**
* Render a rejection reason string for unknown or unsupported adapters
*
* @param {string} reason
* @returns {string}
*/
const renderReason = (reason) => `- ${reason}`;
/**
* Check if the adapter is resolved (function, null, or false)
*
* @param {Function|null|false} adapter
* @returns {boolean}
*/
const isResolvedHandle = (adapter) =>
utils.isFunction(adapter) || adapter === null || adapter === false;
/**
* Get the first suitable adapter from the provided list.
* Tries each adapter in order until a supported one is found.
* Throws an AxiosError if no adapter is suitable.
*
* @param {Array<string|Function>|string|Function} adapters - Adapter(s) by name or function.
* @param {Object} config - Axios request configuration
* @throws {AxiosError} If no suitable adapter is available
* @returns {Function} The resolved adapter function
*/
function getAdapter(adapters, config) {
adapters = utils.isArray(adapters) ? adapters : [adapters];
const { length } = adapters;
let nameOrAdapter;
let adapter;
const rejectedReasons = {};
for (let i = 0; i < length; i++) {
nameOrAdapter = adapters[i];
let id;
adapter = nameOrAdapter;
if (!isResolvedHandle(nameOrAdapter)) {
adapter = knownAdapters[(id = String(nameOrAdapter)).toLowerCase()];
if (adapter === undefined) {
throw new AxiosError(`Unknown adapter '${id}'`);
}
}
if (adapter && (utils.isFunction(adapter) || (adapter = adapter.get(config)))) {
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;
}
/**
* Exports Axios adapters and utility to resolve an adapter
*/
export default {
/**
* Resolve an adapter from a list of adapter names or functions.
* @type {Function}
*/
getAdapter,
/**
* Exposes all known adapters
* @type {Object<string, Function|Object>}
*/
adapters: knownAdapters,
};
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