xdash API Reference / invert
Function: invert()
invert<
K,V>(obj):Record<V,K>
Defined in: src/object.ts:120
Inverts the keys and values of an object. If multiple keys share the same value, the last key encountered will overwrite previous ones. Values that are not strings, numbers, or symbols might be coerced into strings when used as keys.
Type Parameters
K
K extends string
V
V extends string | number | symbol
Parameters
obj
Record<K, V>
object to invert, assumes values are suitable for use as keys (string, number, symbol).
Returns
Record<V, K>
the inverted object where original values become keys and original keys become values.
Example
ts
invert({ a: 'hello', b: 'world' }) // returns { hello: 'a', world: 'b' }
invert({ a: 1, b: 2 }) // returns { '1': 'a', '2': 'b' } (Note: numeric keys become strings)
invert({ a: 'hello', b: 'hello' }) // returns { hello: 'b' } (Key 'hello' is overwritten)