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42 lines
1.2 KiB
JavaScript
42 lines
1.2 KiB
JavaScript
import root from './.internal/root.js'
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import toString from './toString.js'
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/** Used to match leading and trailing whitespace. */
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const reTrimStart = /^\s+/
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/* Built-in method references for those with the same name as other `lodash` methods. */
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const nativeParseInt = root.parseInt
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/**
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* Converts `string` to an integer of the specified radix. If `radix` is
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* `undefined` or `0`, a `radix` of `10` is used unless `value` is a
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* hexadecimal, in which case a `radix` of `16` is used.
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*
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* **Note:** This method aligns with the
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* [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`.
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*
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* @since 1.1.0
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* @category String
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* @param {string} string The string to convert.
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* @param {number} [radix=10] The radix to interpret `value` by.
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* @param- {Object} [guard] Enables use as an iteratee for methods like `map`.
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* @returns {number} Returns the converted integer.
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* @example
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*
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* parseInt('08')
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* // => 8
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*
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* map(['6', '08', '10'], parseInt)
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* // => [6, 8, 10]
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*/
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function parseInt(string, radix, guard) {
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if (guard || radix == null) {
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radix = 0
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} else if (radix) {
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radix = +radix
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}
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return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0)
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}
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export default parseInt
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