For AI agents: the complete documentation index is available at /llms.txt, the full documentation bundle is available at /llms-full.txt, and this page is available as Markdown at /reference/function/ifElse.md.
Install massaman

    ifElse

    Returns a function that branches between two functions based on a predicate.

    const format = ifElse(
  (n: number) => n > 0,
  (n) => `+${n}`,
  (n) => `${n}`,
)
format(5)  // '+5'
format(-3) // '-3'

    Usage

    ifElse<T, R>(predicate: (value: T) => boolean, onTrue: (value: T) => R, onFalse: (value: T) => R)

    Returns a function that branches between two functions based on a predicate.

    import { ifElse } from 'massaman'
// or:  import { ifElse } from 'massaman/function'

const format = ifElse(
  (n: number) => n > 0,
  (n) => `+${n}`,
  (n) => `${n}`,
)
format(5)  // '+5'
format(-3) // '-3'

    Parameters

    predicate(value: T) => booleanrequired

    the condition used to select behavior.

    onTrue(value: T) => Rrequired

    the function called when predicate returns true.

    onFalse(value: T) => Rrequired

    the function called when predicate returns false.

    Returns

    a function that dispatches each value to onTrue or onFalse.

    (value: T) => R