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Last change
on this file since eed0bf8 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
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initial commit
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| [6a3a178] | 1 | /**
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| 2 | * Checks if `value` is suitable for use as unique object key.
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| 3 | *
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| 4 | * @private
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| 5 | * @param {*} value The value to check.
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| 6 | * @returns {boolean} Returns `true` if `value` is suitable, else `false`.
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| 7 | */
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| 8 | function isKeyable(value) {
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| 9 | var type = typeof value;
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| 10 | return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')
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| 11 | ? (value !== '__proto__')
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| 12 | : (value === null);
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| 13 | }
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| 14 |
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| 15 | module.exports = isKeyable;
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