8 lines
379 B
TypeScript
8 lines
379 B
TypeScript
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/**
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* Turn a (multi-key) extraction function into a comparator for use in Array.sort()
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*/
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export declare function makeComparator<T, U>(keyFn: (x: T) => U[]): (a: T, b: T) => number;
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export declare function dropIfEmpty<T>(xs: T[]): T[] | undefined;
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export declare function deepRemoveUndefined(x: any): any;
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export declare function flatMap<T, U>(xs: T[], f: (x: T) => U[]): U[];
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