Function reduceToMultiObject

reduceToMultiObject<const T, const TReturn, const TAssignment>(collection, fn): {
[K in Readonly<PropertyKey>]?: TAssignment[1][]
}
Reduces an array of elements into a multi-object based on a provided mapping function. The mapping function should return an array of key-value pairs, where the key represents the property name in the resulting multi-object, and the value represents the corresponding value to be added to the array of values for that property.
Type Parameters
- const T
  The type of elements in the collection.
- const TReturn
  The type of the values in the resulting multi-object.
- const TAssignment extends [Readonly<PropertyKey>, TReturn]
  The type of the key-value pairs returned by the mapping function.
Parameters
- collection: T[]
  The array of elements to be reduced.
- fn: ((curr, i, collection) => undefined | TAssignment)
  The mapping function.
  - - (curr, i, collection): undefined | TAssignment
    - Parameters
      curr: T
      i: number
      collection: T[]
      Returns undefined | TAssignment
Returns {
[K in Readonly<PropertyKey>]?: TAssignment[1][]
}
The resulting multi-object.
- Defined in src/reduce.ts:13

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