Function mapKey

  • mapKey<T>(object, iteratee): Dictionary<T[keyof T]>

  • The opposite of mapValue this method creates an object with the same values as object and keys generated by running each own enumerable string keyed property of object thru iteratee. The iteratee is invoked with three arguments: (value, key, object).

    Type Parameters

    • T extends object

    Parameters

    • object: T

      The object to iterate over.

    • iteratee: ObjectIterator<T, string>

      The function invoked per iteration.

    Returns Dictionary<T[keyof T]>

    Returns the new mapped object.

    Since

    3.8.0

    See

    mapValue

    Example

    mapKey({ 'a': 1, 'b': 2 }, function(value, key) {
      return key + value
    })
    // => { 'a1': 1, 'b2': 2 }

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