14 lines
413 B
JavaScript
14 lines
413 B
JavaScript
// Based on https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is
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function _objectIs(a, b) {
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// SameValue algorithm
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if (a === b) {
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// Steps 1-5, 7-10
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// Steps 6.b-6.e: +0 != -0
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return a !== 0 || 1 / a === 1 / b;
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} else {
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// Step 6.a: NaN == NaN
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return a !== a && b !== b;
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}
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}
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export default typeof Object.is === 'function' ? Object.is : _objectIs; |