| var global = require('./_global') |
| , core = require('./_core') |
| , hide = require('./_hide') |
| , redefine = require('./_redefine') |
| , ctx = require('./_ctx') |
| , PROTOTYPE = 'prototype'; |
| |
| var $export = function(type, name, source){ |
| var IS_FORCED = type & $export.F |
| , IS_GLOBAL = type & $export.G |
| , IS_STATIC = type & $export.S |
| , IS_PROTO = type & $export.P |
| , IS_BIND = type & $export.B |
| , target = IS_GLOBAL ? global : IS_STATIC ? global[name] || (global[name] = {}) : (global[name] || {})[PROTOTYPE] |
| , exports = IS_GLOBAL ? core : core[name] || (core[name] = {}) |
| , expProto = exports[PROTOTYPE] || (exports[PROTOTYPE] = {}) |
| , key, own, out, exp; |
| if(IS_GLOBAL)source = name; |
| for(key in source){ |
| // contains in native |
| own = !IS_FORCED && target && target[key] !== undefined; |
| // export native or passed |
| out = (own ? target : source)[key]; |
| // bind timers to global for call from export context |
| exp = IS_BIND && own ? ctx(out, global) : IS_PROTO && typeof out == 'function' ? ctx(Function.call, out) : out; |
| // extend global |
| if(target)redefine(target, key, out, type & $export.U); |
| // export |
| if(exports[key] != out)hide(exports, key, exp); |
| if(IS_PROTO && expProto[key] != out)expProto[key] = out; |
| } |
| }; |
| global.core = core; |
| // type bitmap |
| $export.F = 1; // forced |
| $export.G = 2; // global |
| $export.S = 4; // static |
| $export.P = 8; // proto |
| $export.B = 16; // bind |
| $export.W = 32; // wrap |
| $export.U = 64; // safe |
| $export.R = 128; // real proto method for `library` |
| module.exports = $export; |
