es6-collections.js

(function(e){function f(a,c){function b(a){if(!this||this.constructor!==b)return new b(a);this._keys=[];this._values=[];this._itp=[];this.objectOnly=c;a&&v.call(this,a)}c||w(a,"size",{get:x});a.constructor=b;b.prototype=a;return b}function v(a){this.add?a.forEach(this.add,this):a.forEach(function(a){this.set(a[0],a[1])},this)}function d(a){this.has(a)&&(this._keys.splice(b,1),this._values.splice(b,1),this._itp.forEach(function(a){b<a[0]&&a[0]--}));return-1<b}function m(a){return this.has(a)?this._values[b]:
void 0}function n(a,c){if(this.objectOnly&&c!==Object(c))throw new TypeError("Invalid value used as weak collection key");if(c!=c||0===c)for(b=a.length;b--&&!y(a[b],c););else b=a.indexOf(c);return-1<b}function p(a){return n.call(this,this._values,a)}function q(a){return n.call(this,this._keys,a)}function r(a,c){this.has(a)?this._values[b]=c:this._values[this._keys.push(a)-1]=c;return this}function t(a){this.has(a)||this._values.push(a);return this}function h(){(this._keys||0).length=this._values.length=
0}function z(){return k(this._itp,this._keys)}function l(){return k(this._itp,this._values)}function A(){return k(this._itp,this._keys,this._values)}function B(){return k(this._itp,this._values,this._values)}function k(a,c,b){var g=[0],e=!1;a.push(g);return{next:function(){var f,d=g[0];!e&&d<c.length?(f=b?[c[d],b[d]]:c[d],g[0]++):(e=!0,a.splice(a.indexOf(g),1));return{done:e,value:f}}}}function x(){return this._values.length}function u(a,c){for(var b=this.entries();;){var d=b.next();if(d.done)break;
a.call(c,d.value[1],d.value[0],this)}}var b,w=Object.defineProperty,y=function(a,b){return isNaN(a)?isNaN(b):a===b};"undefined"==typeof WeakMap&&(e.WeakMap=f({"delete":d,clear:h,get:m,has:q,set:r},!0));"undefined"!=typeof Map&&"function"===typeof(new Map).values&&(new Map).values().next||(e.Map=f({"delete":d,has:q,get:m,set:r,keys:z,values:l,entries:A,forEach:u,clear:h}));"undefined"!=typeof Set&&"function"===typeof(new Set).values&&(new Set).values().next||(e.Set=f({has:p,add:t,"delete":d,clear:h,
keys:l,values:l,entries:B,forEach:u}));"undefined"==typeof WeakSet&&(e.WeakSet=f({"delete":d,add:t,clear:h,has:p},!0))})(this);