InterceptorManager.js
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'use strict';
import utils from './../utils.js';
class InterceptorManager {
constructor() {
this.handlers = [];
}
/**
* Add a new interceptor to the stack
*
* @param {Function} fulfilled The function to handle `then` for a `Promise`
* @param {Function} rejected The function to handle `reject` for a `Promise`
*
* @return {Number} An ID used to remove interceptor later
*/
use(fulfilled, rejected, options) {
this.handlers.push({
fulfilled,
rejected,
synchronous: options ? options.synchronous : false,
runWhen: options ? options.runWhen : null
});
return this.handlers.length - 1;
}
/**
* Remove an interceptor from the stack
*
* @param {Number} id The ID that was returned by `use`
*
* @returns {Boolean} `true` if the interceptor was removed, `false` otherwise
*/
eject(id) {
if (this.handlers[id]) {
this.handlers[id] = null;
}
}
/**
* Clear all interceptors from the stack
*
* @returns {void}
*/
clear() {
if (this.handlers) {
this.handlers = [];
}
}
/**
* Iterate over all the registered interceptors
*
* This method is particularly useful for skipping over any
* interceptors that may have become `null` calling `eject`.
*
* @param {Function} fn The function to call for each interceptor
*
* @returns {void}
*/
forEach(fn) {
utils.forEach(this.handlers, function forEachHandler(h) {
if (h !== null) {
fn(h);
}
});
}
}
export default InterceptorManager;