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| 1 | // Based on https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is
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| 2 | function _objectIs(a, b) {
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| 3 | // SameValue algorithm
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| 4 | if (a === b) {
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| 5 | // Steps 1-5, 7-10
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| 6 | // Steps 6.b-6.e: +0 != -0
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| 7 | return a !== 0 || 1 / a === 1 / b;
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| 8 | } else {
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| 9 | // Step 6.a: NaN == NaN
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| 10 | return a !== a && b !== b;
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| 11 | }
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| 12 | }
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| 13 |
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| 14 | module.exports = typeof Object.is === 'function' ? Object.is : _objectIs; |
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