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12 lines
429 B
TypeScript
12 lines
429 B
TypeScript
export function mapOptional<I, O>(mapFn: (value: I) => O): (value: I | undefined) => O | undefined {
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return (value: I | undefined) => value ? mapFn(value) : undefined;
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}
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export function mapMany<I, O>(mapFn: (value: I) => O): (value: I[]) => O[] {
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return (value: I[]) => value.map(mapFn);
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}
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export function mapNew<T, V>(classType: new (value: V) => T): (value: V) => T {
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return (value: V) => new classType(value);
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}
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