--- /dev/null
+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;
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