intro commit

src/utils.js

@@ -6,9 +6,9 @@ function arrayMin( array ) {
 
 	if ( array.length === 0 ) return Infinity;
 
-	var min = array[ 0 ];
+	let min = array[ 0 ];
 
-	for ( var i = 1, l = array.length; i < l; ++ i ) {
+	for ( let i = 1, l = array.length; i < l; ++ i ) {
 
 		if ( array[ i ] < min ) min = array[ i ];
 
@@ -22,9 +22,9 @@ function arrayMax( array ) {
 
 	if ( array.length === 0 ) return - Infinity;
 
-	var max = array[ 0 ];
+	let max = array[ 0 ];
 
-	for ( var i = 1, l = array.length; i < l; ++ i ) {
+	for ( let i = 1, l = array.length; i < l; ++ i ) {
 
 		if ( array[ i ] > max ) max = array[ i ];