13 lines
487 B
JavaScript
13 lines
487 B
JavaScript
var call = require('../internals/function-call');
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var hasOwn = require('../internals/has-own-property');
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var isPrototypeOf = require('../internals/object-is-prototype-of');
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var regExpFlags = require('../internals/regexp-flags');
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var RegExpPrototype = RegExp.prototype;
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module.exports = function (R) {
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var flags = R.flags;
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return flags === undefined && !('flags' in RegExpPrototype) && !hasOwn(R, 'flags') && isPrototypeOf(RegExpPrototype, R)
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? call(regExpFlags, R) : flags;
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};
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