[6a3a178] | 1 | var global = require('../internals/global');
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| 2 | var getOwnPropertyDescriptor = require('../internals/object-get-own-property-descriptor').f;
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| 3 | var createNonEnumerableProperty = require('../internals/create-non-enumerable-property');
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| 4 | var redefine = require('../internals/redefine');
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| 5 | var setGlobal = require('../internals/set-global');
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| 6 | var copyConstructorProperties = require('../internals/copy-constructor-properties');
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| 7 | var isForced = require('../internals/is-forced');
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| 8 |
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| 9 | /*
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| 10 | options.target - name of the target object
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| 11 | options.global - target is the global object
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| 12 | options.stat - export as static methods of target
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| 13 | options.proto - export as prototype methods of target
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| 14 | options.real - real prototype method for the `pure` version
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| 15 | options.forced - export even if the native feature is available
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| 16 | options.bind - bind methods to the target, required for the `pure` version
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| 17 | options.wrap - wrap constructors to preventing global pollution, required for the `pure` version
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| 18 | options.unsafe - use the simple assignment of property instead of delete + defineProperty
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| 19 | options.sham - add a flag to not completely full polyfills
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| 20 | options.enumerable - export as enumerable property
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| 21 | options.noTargetGet - prevent calling a getter on target
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| 22 | */
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| 23 | module.exports = function (options, source) {
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| 24 | var TARGET = options.target;
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| 25 | var GLOBAL = options.global;
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| 26 | var STATIC = options.stat;
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| 27 | var FORCED, target, key, targetProperty, sourceProperty, descriptor;
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| 28 | if (GLOBAL) {
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| 29 | target = global;
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| 30 | } else if (STATIC) {
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| 31 | target = global[TARGET] || setGlobal(TARGET, {});
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| 32 | } else {
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| 33 | target = (global[TARGET] || {}).prototype;
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| 34 | }
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| 35 | if (target) for (key in source) {
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| 36 | sourceProperty = source[key];
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| 37 | if (options.noTargetGet) {
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| 38 | descriptor = getOwnPropertyDescriptor(target, key);
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| 39 | targetProperty = descriptor && descriptor.value;
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| 40 | } else targetProperty = target[key];
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| 41 | FORCED = isForced(GLOBAL ? key : TARGET + (STATIC ? '.' : '#') + key, options.forced);
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| 42 | // contained in target
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| 43 | if (!FORCED && targetProperty !== undefined) {
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| 44 | if (typeof sourceProperty === typeof targetProperty) continue;
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| 45 | copyConstructorProperties(sourceProperty, targetProperty);
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| 46 | }
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| 47 | // add a flag to not completely full polyfills
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| 48 | if (options.sham || (targetProperty && targetProperty.sham)) {
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| 49 | createNonEnumerableProperty(sourceProperty, 'sham', true);
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| 50 | }
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| 51 | // extend global
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| 52 | redefine(target, key, sourceProperty, options);
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| 53 | }
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| 54 | };
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