Function once

** Executes a function only once.**

Example

const initialize = once(() => console.log("Initializing..."));
initialize(); // "Initializing..."
initialize(); // (No output)
  • once<T, R>(fn): ((...args: T) => R)

  • Type Parameters

    • T extends unknown[]

      Function arguments.

    • R

      Function return type.

    Parameters

    • fn: ((...args: T) => R)

      The function to call once.

        • (...args): R

        • Parameters

          • Rest...args: T

          Returns R

    Returns ((...args: T) => R)

    • A function that runs once and caches the result.
      • (...args): R

      • Parameters

        • Rest...args: T

        Returns R

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