ce4c83ff
 wxy
初始提交
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
class HookMap {
constructor(factory) {
this._map = new Map();
this._factory = factory;
this._interceptors = [];
}
get(key) {
return this._map.get(key);
}
for(key) {
const hook = this.get(key);
if (hook !== undefined) {
return hook;
}
let newHook = this._factory(key);
const interceptors = this._interceptors;
for (let i = 0; i < interceptors.length; i++) {
newHook = interceptors[i].factory(key, newHook);
}
this._map.set(key, newHook);
return newHook;
}
intercept(interceptor) {
this._interceptors.push(
Object.assign(
{
factory: (key, hook) => hook
},
interceptor
)
);
}
tap(key, options, fn) {
return this.for(key).tap(options, fn);
}
tapAsync(key, options, fn) {
return this.for(key).tapAsync(options, fn);
}
tapPromise(key, options, fn) {
return this.for(key).tapPromise(options, fn);
}
}
module.exports = HookMap;
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