Function unleft

unleft<L, R>(either: AEither<L, R>): Promise<IOption<L>>
Unwraps a the left value into an optional value ignoring rights by returning none

Returns
Promise<O.IOption>
Type Parameters
- L
- R
Parameters
- either: AEither<L, R>
Returns Promise<IOption<L>>
- Defined in packages/utility/src/aeither/index.ts:60

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