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38 lines
1.0 KiB
JavaScript
38 lines
1.0 KiB
JavaScript
import memoizeCapped from './memoizeCapped.js'
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const reEscapeChar = /\\(\\)?/g
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const reLeadingDot = /^\./
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const rePropName = RegExp(
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// Match anything that isn't a dot or bracket.
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'[^.[\\]]+' + '|' +
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// Or match property names within brackets.
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'\\[(?:' +
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// Match numbers.
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'(-?\\d+(?:\\.\\d+)?)' + '|' +
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// Or match strings (supports escaping characters).
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'(["\'])((?:(?!\\2)[^\\\\]|\\\\.)*?)\\2' +
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')\\]'+ '|' +
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// Or match "" as the space between consecutive dots or empty brackets.
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'(?=(?:\\.|\\[\\])(?:\\.|\\[\\]|$))'
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, 'g')
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/**
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* Converts `string` to a property path array.
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*
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* @private
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* @param {string} string The string to convert.
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* @returns {Array} Returns the property path array.
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*/
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const stringToPath = memoizeCapped(string => {
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const result = []
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if (reLeadingDot.test(string)) {
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result.push('')
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}
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string.replace(rePropName, (match, number, quote, string) => {
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result.push(quote ? string.replace(reEscapeChar, '$1') : (number || match))
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})
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return result
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})
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export default stringToPath
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