index.js
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/**
* Base client.
*/
import Promise from '../../promise';
import xhrClient from './xhr';
import nodeClient from './node';
import { warn, when, isObject, isFunction, inBrowser } from '../../util';
export default function (context) {
var reqHandlers = [sendRequest], resHandlers = [], handler;
if (!isObject(context)) {
context = null;
}
function Client(request) {
return new Promise(resolve => {
function exec() {
handler = reqHandlers.pop();
if (isFunction(handler)) {
handler.call(context, request, next);
} else {
warn(`Invalid interceptor of type ${typeof handler}, must be a function`);
next();
}
}
function next(response) {
if (isFunction(response)) {
resHandlers.unshift(response);
} else if (isObject(response)) {
resHandlers.forEach((handler) => {
response = when(response, (response) => {
return handler.call(context, response) || response;
});
});
when(response, resolve);
return;
}
exec();
}
exec();
}, context);
}
Client.use = handler => {
reqHandlers.push(handler);
};
return Client;
}
function sendRequest(request, resolve) {
var client = request.client || (inBrowser ? xhrClient : nodeClient);
resolve(client(request));
}