update
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42
package/node_modules/@isaacs/string-locale-compare/index.js
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42
package/node_modules/@isaacs/string-locale-compare/index.js
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const hasIntl = typeof Intl === 'object' && !!Intl
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const Collator = hasIntl && Intl.Collator
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const cache = new Map()
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const collatorCompare = (locale, opts) => {
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const collator = new Collator(locale, opts)
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return (a, b) => collator.compare(a, b)
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}
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const localeCompare = (locale, opts) => (a, b) => a.localeCompare(b, locale, opts)
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const knownOptions = [
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'sensitivity',
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'numeric',
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'ignorePunctuation',
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'caseFirst',
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]
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const { hasOwnProperty } = Object.prototype
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module.exports = (locale, options = {}) => {
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if (!locale || typeof locale !== 'string')
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throw new TypeError('locale required')
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const opts = knownOptions.reduce((opts, k) => {
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if (hasOwnProperty.call(options, k)) {
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opts[k] = options[k]
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}
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return opts
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}, {})
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const key = `${locale}\n${JSON.stringify(opts)}`
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if (cache.has(key))
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return cache.get(key)
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const compare = hasIntl
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? collatorCompare(locale, opts)
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: localeCompare(locale, opts)
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cache.set(key, compare)
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return compare
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}
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