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