Function safe

Safely execute a function, return its return value or default value if the function throws.

Param: fn

function to run

Param: def

default value

Example

safe(() => JSON.parse(unknownString), null); // if unknownString is not a valid JSON, null will be returned
safe(() => trySomethingComplicated(), defaultValue); // if trySomethingComplicated throws, defaultValue will be returned
  • safe<T>(fn: () => T): T | undefined

  • Type Parameters

    • T

    Parameters

    • fn: () => T

    Returns T | undefined

  • safe<T, Y>(fn: () => T, def: Y): T | Y

  • Type Parameters

    • T
    • Y

    Parameters

    • fn: () => T
    • def: Y

    Returns T | Y

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