Function groupBy

groupBy<T, K extends string | number | symbol>(
array: readonly T[],
key: K,
): Record<Extract<T[K], PropertyKeyValue>, T[]>
Groups array items by the value of a key. Items where the key value is not a valid property key are skipped.
Type Parameters
- T
- K extends string | number | symbol
Parameters
- array: readonly T[]
  The array to group.
- key: K
  The key whose values are used as group identifiers.
Returns Record<Extract<T[K], PropertyKeyValue>, T[]>
Example
```
groupBy(
  [{ role: "admin", name: "Alice" }, { role: "user", name: "Bob" }, { role: "admin", name: "Carol" }],
  "role"
)
// => { admin: [{ role: "admin", name: "Alice" }, { role: "admin", name: "Carol" }], user: [...] }
```
- Defined in array/groupBy/index.ts:19