tiny-types/lib/predicates/isFunction.js

A tiny library that brings Tiny Types to JavaScript and TypeScript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.isFunction = isFunction;
const Predicate_1 = require("./Predicate");
/**
 * @desc Ensures that the `value` is a {@link Function}.
 *
 * @example
 * import { ensure, isFunction, TinyType } from 'tiny-types';
 *
 * function myFunction(callback: (error?: Error) => void): void {
 *     ensure('callback', callback, isFunction());
 * }
 *
 * @returns {Predicate<Function>}
 */
function isFunction() {
    return Predicate_1.Predicate.to(`be a function`, (value) => typeof value === 'function');
}
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