Refactor to ignore iterator return values

Author: kgryte

lib/node_modules/@stdlib/simulate/iter/awgn/lib/main.js

@@ -219,27 +219,26 @@ function iterawgn( iterator, sigma, options ) {
 	* @returns {Object} iterator protocol-compliant object
 	*/
 	function next() {
-		var out;
 		var v;
 		if ( FLG ) {
 			return {
 				'done': true
 			};
 		}
-		out = {};
 		v = iterator.next();
-		if ( typeof v.value === 'number' ) {
-			out.value = v.value + ( sigma*rnorm() );
-		} else if ( hasOwnProp( v, 'value' ) ) {
-			out.value = NaN;
-		}
 		if ( v.done ) {
 			FLG = true;
-			out.done = true;
+			return v;
+		}
+		if ( typeof v.value === 'number' ) {
+			v = v.value + ( sigma*rnorm() );
 		} else {
-			out.done = false;
+			v = NaN;
 		}
-		return out;
+		return {
+			'value': v,
+			'done': false
+		};
 	}
 
 	/**

lib/node_modules/@stdlib/simulate/iter/awgn/test/test.js

@@ -496,75 +496,6 @@ tape( 'the function supports providing a seeded pseudorandom number generator fo
 	t.end();
 });
 
-tape( 'the function returns an iterator protocol-compliant object which iteratively introduces additive white Gaussian noise (value+done)', function test( t ) {
-	var expected;
-	var actual;
-	var values;
-	var rnorm;
-	var it;
-	var v;
-	var i;
-
-	rnorm = improvedZiggurat.factory({
-		'seed': 12345
-	});
-
-	values = [ 2.0, 3.0, 2.0, 4.0, 3.0, 4.0 ];
-
-	expected = [];
-	for ( i = 0; i < values.length; i++ ) {
-		expected.push( values[i] + (1.0*rnorm()) );
-	}
-
-	it = iterawgn( createIterator( values ), 1.0, {
-		'seed': 12345
-	});
-	t.equal( it.next.length, 0, 'has zero arity' );
-
-	actual = [];
-	for ( i = 0; i < values.length; i++ ) {
-		v = it.next();
-		t.equal( typeof v.value, 'number', 'returns a number' );
-		t.equal( typeof v.done, 'boolean', 'returns a boolean' );
-		actual.push( v.value );
-	}
-	t.deepEqual( actual, expected, 'returns expected values' );
-
-	v = it.next();
-	t.equal( v.value, void 0, 'returns expected value' );
-	t.equal( v.done, true, 'returns expected value' );
-
-	t.end();
-
-	function createIterator( arr ) {
-		var len;
-		var it;
-		var i;
-
-		len = arr.length;
-		i = -1;
-
-		it = {};
-		it.next = next;
-
-		return it;
-
-		function next() {
-			var out;
-			i += 1;
-			if ( i < len ) {
-				out = {};
-				out.value = arr[ i ];
-				out.done = ( i === len-1 );
-				return out;
-			}
-			return {
-				'done': true
-			};
-		}
-	}
-});
-
 tape( 'if an iterated value is a non-numeric value, the returned value is `NaN`', function test( t ) {
 	var values;
 	var it;