Elijah
724d70e58b
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29 lines
525 B
JavaScript
29 lines
525 B
JavaScript
'use strict'
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const numeric = /^[0-9]+$/
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const compareIdentifiers = (a, b) => {
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if (typeof a === 'number' && typeof b === 'number') {
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return a === b ? 0 : a < b ? -1 : 1
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}
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const anum = numeric.test(a)
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const bnum = numeric.test(b)
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if (anum && bnum) {
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a = +a
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b = +b
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}
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return a === b ? 0
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: (anum && !bnum) ? -1
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: (bnum && !anum) ? 1
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: a < b ? -1
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: 1
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}
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const rcompareIdentifiers = (a, b) => compareIdentifiers(b, a)
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module.exports = {
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compareIdentifiers,
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rcompareIdentifiers,
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}
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