50 lines
1.9 KiB
TypeScript
50 lines
1.9 KiB
TypeScript
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// License: LGPL-3.0-or-later
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// from https://github.com/mtraynham/lodash-joins/blob/c252b462981562451d85d1e09c8f273ce7fe06c5/lib/util/joinWrapper.ts
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import {Accessor, Join, Merger, NonMergeJoin} from '../typings';
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import basicAccessor from './basicAccessor';
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import basicMerger from './basicMerger';
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/**
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* Wrap a join function to process inputs in a more succinct manner.
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*/
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/* eslint-disable @typescript-eslint/no-explicit-any,@typescript-eslint/consistent-type-assertions */
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function joinWrapper<LeftRow, Key>(
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joinFn: NonMergeJoin<LeftRow, LeftRow, Key>
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): NonMergeJoin<LeftRow, LeftRow, Key>;
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function joinWrapper<LeftRow, RightRow, Key>(
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joinFn: NonMergeJoin<LeftRow, RightRow, Key>
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): NonMergeJoin<LeftRow, RightRow, Key>;
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function joinWrapper<LeftRow, Key>(
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joinFn: Join<LeftRow, LeftRow, Key, LeftRow>
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): Join<LeftRow, LeftRow, Key, LeftRow>;
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function joinWrapper<LeftRow, RightRow, Key>(
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joinFn: Join<LeftRow, RightRow, Key, LeftRow & RightRow>
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): Join<LeftRow, RightRow, Key, LeftRow & RightRow>;
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function joinWrapper<LeftRow, RightRow, Key, MergeResult>(
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joinFn: Join<LeftRow, RightRow, Key, MergeResult>
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): Join<LeftRow, RightRow, Key, MergeResult> {
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return (
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a: LeftRow[],
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aAccessor: Accessor<LeftRow, Key>,
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b: RightRow[] = <any> a,
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bAccessor: Accessor<RightRow, Key> = <any> aAccessor,
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merger: Merger<LeftRow, RightRow, MergeResult> = <any> basicMerger
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): MergeResult[] => {
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if (!a) {
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throw new Error('Missing required left array');
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} else if (!aAccessor) {
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throw new Error('Missing required left accessor');
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}
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return joinFn(
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a,
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basicAccessor(aAccessor),
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b,
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basicAccessor(bAccessor),
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merger
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);
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};
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}
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/* eslint-enable @typescript-eslint/no-explicit-any,@typescript-eslint/consistent-type-assertions */
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export default joinWrapper;
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