24 lines
647 B
TypeScript
24 lines
647 B
TypeScript
type t = string | number
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type fn = () => t[]
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export function duplicate(matches: t[] | fn, ignoreCase: boolean = false): any {
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if (Array.isArray(matches)) return factory(matches, ignoreCase)
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return (value: any) => {
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let cb = factory(matches(), ignoreCase)
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return cb(value)
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}
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}
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function factory(values: t[], ignoreCase: boolean): any {
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return (value: any) => {
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if (value === undefined || value === null || values.length === 0)
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return true
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else {
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let flags = ignoreCase ? 'i' : ''
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let exp = new RegExp(`^(${value})$`, flags)
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return values.find(o => exp.test(o.toString())) === undefined
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}
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}
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}
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