if( typeof module !== 'undefined' )
require( 'wTools' );
let _ = wTools;

var unroll1 = _.unroll.make([ '5' ]);
var unroll2 = _.unroll.make([ 'str', [ 3 ] ]);

// unrolling elements of the given array that are unroll-array
var result = _.unroll.normalize([ 0, 7, unroll1, [ unroll2, unroll1 ] ]);
/* returns : [ 0, 7, '5', [ 'str', [ 3 ],  '5' ] ] */
console.log( _.unroll.is( result ) );
/* log : false */