🎯 Use case
This file lives under “utils/”, which covers cross-cutting helpers (shell, tempfiles, settings, messages, process input, …). On the API surface it exposes objectGroupBy — mainly functions, hooks, or classes. What the file header says: https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-object.groupby.
Generated from folder role, exports, dependency roots, and inline comments — not hand-reviewed for every path.
🧠 Inline summary
https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-object.groupby
📤 Exports (heuristic)
objectGroupBy
🖥️ Source preview
/**
* https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-object.groupby
*/
export function objectGroupBy<T, K extends PropertyKey>(
items: Iterable<T>,
keySelector: (item: T, index: number) => K,
): Partial<Record<K, T[]>> {
const result = Object.create(null) as Partial<Record<K, T[]>>
let index = 0
for (const item of items) {
const key = keySelector(item, index++)
if (result[key] === undefined) {
result[key] = []
}
result[key].push(item)
}
return result
}