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12 lines
353 B
TypeScript
12 lines
353 B
TypeScript
/**
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* Calls a defined callback on each element of an array.
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* Then, flattens the result into a new array.
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*/
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export const flatMap = <U, T>(array: T[], callback: (value: T, index: number, array: T[]) => U[]): U[] => {
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const result: U[] = [];
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array.map<U[]>(callback).forEach(arr => {
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result.push(...arr);
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});
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return result;
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};
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