--- /dev/null
+var global = require('./_global')
+ , core = require('./_core')
+ , ctx = require('./_ctx')
+ , hide = require('./_hide')
+ , 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
+ , IS_WRAP = type & $export.W
+ , exports = IS_GLOBAL ? core : core[name] || (core[name] = {})
+ , expProto = exports[PROTOTYPE]
+ , target = IS_GLOBAL ? global : IS_STATIC ? global[name] : (global[name] || {})[PROTOTYPE]
+ , key, own, out;
+ if(IS_GLOBAL)source = name;
+ for(key in source){
+ // contains in native
+ own = !IS_FORCED && target && target[key] !== undefined;
+ if(own && key in exports)continue;
+ // export native or passed
+ out = own ? target[key] : source[key];
+ // prevent global pollution for namespaces
+ exports[key] = IS_GLOBAL && typeof target[key] != 'function' ? source[key]
+ // bind timers to global for call from export context
+ : IS_BIND && own ? ctx(out, global)
+ // wrap global constructors for prevent change them in library
+ : IS_WRAP && target[key] == out ? (function(C){
+ var F = function(a, b, c){
+ if(this instanceof C){
+ switch(arguments.length){
+ case 0: return new C;
+ case 1: return new C(a);
+ case 2: return new C(a, b);
+ } return new C(a, b, c);
+ } return C.apply(this, arguments);
+ };
+ F[PROTOTYPE] = C[PROTOTYPE];
+ return F;
+ // make static versions for prototype methods
+ })(out) : IS_PROTO && typeof out == 'function' ? ctx(Function.call, out) : out;
+ // export proto methods to core.%CONSTRUCTOR%.methods.%NAME%
+ if(IS_PROTO){
+ (exports.virtual || (exports.virtual = {}))[key] = out;
+ // export proto methods to core.%CONSTRUCTOR%.prototype.%NAME%
+ if(type & $export.R && expProto && !expProto[key])hide(expProto, key, out);
+ }
+ }
+};
+// type bitmap
+$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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