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48 lines
1.1 KiB
TypeScript
48 lines
1.1 KiB
TypeScript
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// Loaded from https://raw.githubusercontent.com/lodash/lodash/master/toString.js
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import isSymbol from './isSymbol.js'
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/** Used as references for various `Number` constants. */
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const INFINITY = 1 / 0
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/**
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* Converts `value` to a string. An empty string is returned for `null`
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* and `undefined` values. The sign of `-0` is preserved.
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*
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* @since 4.0.0
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* @category Lang
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* @param {*} value The value to convert.
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* @returns {string} Returns the converted string.
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* @example
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*
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* toString(null)
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* // => ''
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*
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* toString(-0)
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* // => '-0'
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*
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* toString([1, 2, 3])
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* // => '1,2,3'
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*/
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function toString(value) {
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if (value == null) {
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return ''
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}
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// Exit early for strings to avoid a performance hit in some environments.
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if (typeof value === 'string') {
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return value
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}
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if (Array.isArray(value)) {
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// Recursively convert values (susceptible to call stack limits).
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return `${value.map((other) => other == null ? other : toString(other))}`
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}
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if (isSymbol(value)) {
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return value.toString()
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}
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const result = `${value}`
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return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result
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}
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export default toString
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