var hasOwn = require('./internals/has-own-property');
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var isArray = require('./internals/is-array');
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var isForced = require('./internals/is-forced');
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var shared = require('./internals/shared-store');
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var data = isForced.data;
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var normalize = isForced.normalize;
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var USE_FUNCTION_CONSTRUCTOR = 'USE_FUNCTION_CONSTRUCTOR';
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var ASYNC_ITERATOR_PROTOTYPE = 'AsyncIteratorPrototype';
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var setAggressivenessLevel = function (object, constant) {
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if (isArray(object)) for (var i = 0; i < object.length; i++) data[normalize(object[i])] = constant;
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};
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module.exports = function (options) {
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if (typeof options == 'object') {
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setAggressivenessLevel(options.useNative, isForced.NATIVE);
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setAggressivenessLevel(options.usePolyfill, isForced.POLYFILL);
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setAggressivenessLevel(options.useFeatureDetection, null);
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if (hasOwn(options, USE_FUNCTION_CONSTRUCTOR)) {
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shared[USE_FUNCTION_CONSTRUCTOR] = !!options[USE_FUNCTION_CONSTRUCTOR];
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}
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if (hasOwn(options, ASYNC_ITERATOR_PROTOTYPE)) {
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shared[USE_FUNCTION_CONSTRUCTOR] = options[ASYNC_ITERATOR_PROTOTYPE];
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}
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}
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};
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