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https://github.com/carbon-design-system/carbon-components-svelte.git
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5f1e8de1e1
Refactor `toHiearchy` to be more generic, performant - Use callback to "pick" generic parent ID property instead of requiring that `pid` be hardcoded` - Account for edge cases of an invalid parent ID - Use Map to store node children for lookups - Use one pass instead of removing empty nodes at the very end - DX: use generics to type `toHierarchy` - Make `toHierarchy` even more generic (reusable with `RecursiveList`) Co-Authored-By: Bram <bramhavers@gmail.com>
21 lines
529 B
TypeScript
21 lines
529 B
TypeScript
type NodeLike = {
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id: string | number;
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nodes?: NodeLike[];
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[key: string]: any;
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};
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/** Create a hierarchical tree from a flat array. */
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export function toHierarchy<
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T extends NodeLike,
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K extends keyof Omit<T, "id" | "nodes">,
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>(
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flatArray: T[] | readonly T[],
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/**
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* Function that returns the parent ID for a given node.
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* @example
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* toHierarchy(flatArray, (node) => node.parentId);
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*/
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getParentId: (node: T) => T[K] | null,
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): (T & { nodes?: (T & { nodes?: T[] })[] })[];
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export default toHierarchy;
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