24 lines
633 B
TypeScript
24 lines
633 B
TypeScript
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type t = string | number;
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type fn = () => t[];
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export function duplicate(matches: t[] | fn, ignoreCase: boolean = false) {
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if (Array.isArray(matches)) return factory(matches, ignoreCase);
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return value => {
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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) {
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return value => {
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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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