Source: \once.js
import before from './before.js'
/**
* Creates a function that is restricted to invoking `func` once. Repeat calls
* to the function return the value of the first invocation. The `func` is
* invoked with the `this` binding and arguments of the created function.
*
* @since 0.1.0
* @category Function
* @param {Function} func The function to restrict.
* @returns {Function} Returns the new restricted function.
* @example
*
* const initialize = once(createApplication)
* initialize()
* initialize()
* // => `createApplication` is invoked once
*/
function once(func) {
return before(2, func)
}
export default once