import { identical, curryN } from 'ramda';

/**
 * Checks if input value is the Boolean primitive `true`. Will return false for Boolean objects
 * created using the `Boolean` function as a constructor.
 *
 * @func isTrue
 * @memberOf RA
 * @since {@link https://char0n.github.io/ramda-adjunct/2.6.0|v2.6.0}
 * @category Type
 * @sig * -> Boolean
 * @param {*} val The value to test
 * @return {boolean}
 * @see {@link RA.isFalse|isFalse}, {@link RA.isTruthy|isTruthy}, {@link RA.isFalsy|isFalsy}
 * @example
 *
 * RA.isTrue(true); // => true
 * RA.isTrue(Boolean(true)); // => true
 * RA.isTrue(false); // => false
 * RA.isTrue(1); // => false
 * RA.isTrue('true'); // => false
 * RA.isTrue(new Boolean(true)); // => false
 */

const isTrue = curryN(1, identical(true));

export default isTrue;