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1
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var isSymbol = require('./isSymbol');
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2
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|
3
|
/** Used as references for various `Number` constants. */
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|
4
|
var INFINITY = 1 / 0;
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|
5
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|
|
6
|
/**
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|
7
|
* Converts `value` to a string key if it's not a string or symbol.
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|
8
|
*
|
|
9
|
* @private
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|
10
|
* @param {*} value The value to inspect.
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|
11
|
* @returns {string|symbol} Returns the key.
|
|
12
|
*/
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|
13
|
function toKey(value) {
|
|
14
|
if (typeof value == 'string' || isSymbol(value)) {
|
|
15
|
return value;
|
|
16
|
}
|
|
17
|
var result = (value + '');
|
|
18
|
return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
|
|
19
|
}
|
|
20
|
|
|
21
|
module.exports = toKey;
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