function internal( x ) {
	var i;
	for ( i = 0; i < x.length; i++ ) {
		if ( x[ i ] ) {
			return true;
		}
	}
	return false;
}
Tests whether at least one element in an array is truthy.

@private
@param {Collection} x - input array
@returns {boolean} boolean indicating whether at least one element is truthy

@example
var x = [ 0, 0, 1, 0 ];

var out = internal( x );
// returns true

@example
var x = [ 0, 0, 0, 0 ];

var out = internal( x );
// returns false