use Object.setPrototypeOf instead of __proto__

lib/errors.js

@@ -31,7 +31,7 @@ function ParseError(msg) {
  * Inherit from `Error.prototype`.
  */
 
-ParseError.prototype.__proto__ = Error.prototype;
+Object.setPrototypeOf(ParseError.prototype, Error.prototype);
 
 /**
  * Initialize a new `SyntaxError` with the given `msg`.
@@ -52,4 +52,4 @@ function SyntaxError(msg) {
  * Inherit from `Error.prototype`.
  */
 
-SyntaxError.prototype.__proto__ = Error.prototype;
+Object.setPrototypeOf(SyntaxError.prototype, Error.prototype);

lib/nodes/arguments.js

@@ -26,7 +26,7 @@ var Arguments = module.exports = function Arguments(){
  * Inherit from `nodes.Expression.prototype`.
  */
 
-Arguments.prototype.__proto__ = nodes.Expression.prototype;
+Object.setPrototypeOf(Arguments.prototype, nodes.Expression.prototype);
 
 /**
  * Initialize an `Arguments` object with the nodes

lib/nodes/atblock.js

@@ -32,7 +32,7 @@ Atblock.prototype.__defineGetter__('nodes', function(){
  * Inherit from `Node.prototype`.
  */
 
-Atblock.prototype.__proto__ = Node.prototype;
+Object.setPrototypeOf(Atblock.prototype, Node.prototype);
 
 /**
  * Return a clone of this node.

lib/nodes/atrule.js

@@ -26,7 +26,7 @@ var Atrule = module.exports = function Atrule(type){
  * Inherit from `Node.prototype`.
  */
 
-Atrule.prototype.__proto__ = Node.prototype;
+Object.setPrototypeOf(Atrule.prototype, Node.prototype);
 
 /**
  * Check if at-rule's block has only properties.

lib/nodes/binop.js

@@ -31,11 +31,11 @@ var BinOp = module.exports = function BinOp(op, left, right){
  * Inherit from `Node.prototype`.
  */
 
-BinOp.prototype.__proto__ = Node.prototype;
+Object.setPrototypeOf(BinOp.prototype, Node.prototype);
 
 /**
  * Return a clone of this node.
- * 
+ *
  * @return {Node}
  * @api public
  */

lib/nodes/block.js

@@ -30,7 +30,7 @@ var Block = module.exports = function Block(parent, node){
  * Inherit from `Node.prototype`.
  */
 
-Block.prototype.__proto__ = Node.prototype;
+Object.setPrototypeOf(Block.prototype, Node.prototype);
 
 /**
  * Check if this block has properties..
@@ -77,7 +77,7 @@ Block.prototype.__defineGetter__('isEmpty', function(){
 
 /**
  * Return a clone of this node.
- * 
+ *
  * @return {Node}
  * @api public
  */

lib/nodes/boolean.js

@@ -32,7 +32,7 @@ var Boolean = module.exports = function Boolean(val){
  * Inherit from `Node.prototype`.
  */
 
-Boolean.prototype.__proto__ = Node.prototype;
+Object.setPrototypeOf(Boolean.prototype, Node.prototype);
 
 /**
  * Return `this` node.

lib/nodes/call.js

@@ -29,11 +29,11 @@ var Call = module.exports = function Call(name, args){
  * Inherit from `Node.prototype`.
  */
 
-Call.prototype.__proto__ = Node.prototype;
+Object.setPrototypeOf(Call.prototype, Node.prototype);
 
 /**
  * Return a clone of this node.
- * 
+ *
  * @return {Node}
  * @api public
  */

lib/nodes/charset.js

@@ -27,7 +27,7 @@ var Charset = module.exports = function Charset(val){
  * Inherit from `Node.prototype`.
  */
 
-Charset.prototype.__proto__ = Node.prototype;
+Object.setPrototypeOf(Charset.prototype, Node.prototype);
 
 /**
  * Return @charset "val".

lib/nodes/comment.js

@@ -31,7 +31,7 @@ var Comment = module.exports = function Comment(str, suppress, inline){
  * Inherit from `Node.prototype`.
  */
 
-Comment.prototype.__proto__ = Node.prototype;
+Object.setPrototypeOf(Comment.prototype, Node.prototype);
 
 /**
  * Return a JSON representation of this node.

lib/nodes/each.js

@@ -35,11 +35,11 @@ var Each = module.exports = function Each(val, key, expr, block){
  * Inherit from `Node.prototype`.
  */
 
-Each.prototype.__proto__ = Node.prototype;
+Object.setPrototypeOf(Each.prototype, Node.prototype);
 
 /**
  * Return a clone of this node.
- * 
+ *
  * @return {Node}
  * @api public
  */

lib/nodes/expression.js

@@ -67,11 +67,11 @@ Expression.prototype.__defineGetter__('hash', function(){
  * Inherit from `Node.prototype`.
  */
 
-Expression.prototype.__proto__ = Node.prototype;
+Object.setPrototypeOf(Expression.prototype, Node.prototype);
 
 /**
  * Return a clone of this node.
- * 
+ *
  * @return {Node}
  * @api public
  */

lib/nodes/extend.js

@@ -27,11 +27,11 @@ var Extend = module.exports = function Extend(selectors){
  * Inherit from `Node.prototype`.
  */
 
-Extend.prototype.__proto__ = Node.prototype;
+Object.setPrototypeOf(Extend.prototype, Node.prototype);
 
 /**
  * Return a clone of this node.
- * 
+ *
  * @return {Node}
  * @api public
  */

lib/nodes/feature.js

@@ -28,11 +28,11 @@ var Feature = module.exports = function Feature(segs){
  * Inherit from `Node.prototype`.
  */
 
-Feature.prototype.__proto__ = Node.prototype;
+Object.setPrototypeOf(Feature.prototype, Node.prototype);
 
 /**
  * Return a clone of this node.
- * 
+ *
  * @return {Node}
  * @api public
  */

lib/nodes/function.js

@@ -43,7 +43,7 @@ Function.prototype.__defineGetter__('arity', function(){
  * Inherit from `Node.prototype`.
  */
 
-Function.prototype.__proto__ = Node.prototype;
+Object.setPrototypeOf(Function.prototype, Node.prototype);
 
 /**
  * Return hash.
@@ -58,7 +58,7 @@ Function.prototype.__defineGetter__('hash', function(){
 
 /**
  * Return a clone of this node.
- * 
+ *
  * @return {Node}
  * @api public
  */

lib/nodes/group.js

@@ -27,7 +27,7 @@ var Group = module.exports = function Group(){
  * Inherit from `Node.prototype`.
  */
 
-Group.prototype.__proto__ = Node.prototype;
+Object.setPrototypeOf(Group.prototype, Node.prototype);
 
 /**
  * Push the given `selector` node.
@@ -74,7 +74,7 @@ Group.prototype.__defineGetter__('hasOnlyPlaceholders', function(){
 
 /**
  * Return a clone of this node.
- * 
+ *
  * @return {Node}
  * @api public
  */

lib/nodes/hsla.js

@@ -35,7 +35,7 @@ var HSLA = exports = module.exports = function HSLA(h,s,l,a){
  * Inherit from `Node.prototype`.
  */
 
-HSLA.prototype.__proto__ = Node.prototype;
+Object.setPrototypeOf(HSLA.prototype, Node.prototype);
 
 /**
  * Return hsla(n,n,n,n).
@@ -54,7 +54,7 @@ HSLA.prototype.toString = function(){
 
 /**
  * Return a clone of this node.
- * 
+ *
  * @return {Node}
  * @api public
  */

lib/nodes/ident.js

@@ -54,11 +54,11 @@ Ident.prototype.__defineGetter__('hash', function(){
  * Inherit from `Node.prototype`.
  */
 
-Ident.prototype.__proto__ = Node.prototype;
+Object.setPrototypeOf(Ident.prototype, Node.prototype);
 
 /**
  * Return a clone of this node.
- * 
+ *
  * @return {Node}
  * @api public
  */

lib/nodes/if.js

@@ -34,11 +34,11 @@ var If = module.exports = function If(cond, negate){
  * Inherit from `Node.prototype`.
  */
 
-If.prototype.__proto__ = Node.prototype;
+Object.setPrototypeOf(If.prototype, Node.prototype);
 
 /**
  * Return a clone of this node.
- * 
+ *
  * @return {Node}
  * @api public
  */

lib/nodes/import.js

@@ -28,7 +28,7 @@ var Import = module.exports = function Import(expr, once){
  * Inherit from `Node.prototype`.
  */
 
-Import.prototype.__proto__ = Node.prototype;
+Object.setPrototypeOf(Import.prototype, Node.prototype);
 
 /**
  * Return a clone of this node.

lib/nodes/keyframes.js

@@ -30,11 +30,11 @@ var Keyframes = module.exports = function Keyframes(segs, prefix){
  * Inherit from `Atrule.prototype`.
  */
 
-Keyframes.prototype.__proto__ = Atrule.prototype;
+Object.setPrototypeOf(Keyframes.prototype, Atrule.prototype);
 
 /**
  * Return a clone of this node.
- * 
+ *
  * @return {Node}
  * @api public
  */

lib/nodes/literal.js

@@ -30,7 +30,7 @@ var Literal = module.exports = function Literal(str){
  * Inherit from `Node.prototype`.
  */
 
-Literal.prototype.__proto__ = Node.prototype;
+Object.setPrototypeOf(Literal.prototype, Node.prototype);
 
 /**
  * Return hash.

lib/nodes/media.js

@@ -27,7 +27,7 @@ var Media = module.exports = function Media(val){
  * Inherit from `Atrule.prototype`.
  */
 
-Media.prototype.__proto__ = Atrule.prototype;
+Object.setPrototypeOf(Media.prototype, Atrule.prototype);
 
 /**
  * Clone this node.

lib/nodes/member.js

@@ -29,7 +29,7 @@ var Member = module.exports = function Member(left, right){
  * Inherit from `Node.prototype`.
  */
 
-Member.prototype.__proto__ = Node.prototype;
+Object.setPrototypeOf(Member.prototype, Node.prototype);
 
 /**
  * Return a clone of this node.

lib/nodes/namespace.js

@@ -28,7 +28,7 @@ var Namespace = module.exports = function Namespace(val, prefix){
  * Inherit from `Node.prototype`.
  */
 
-Namespace.prototype.__proto__ = Node.prototype;
+Object.setPrototypeOf(Namespace.prototype, Node.prototype);
 
 /**
  * Return @namespace "val".

lib/nodes/node.js

@@ -32,7 +32,7 @@ function CoercionError(msg) {
  * Inherit from `Error.prototype`.
  */
 
-CoercionError.prototype.__proto__ = Error.prototype;
+Object.setPrototypeOf(CoercionError.prototype, Error.prototype);
 
 /**
  * Node constructor.
@@ -84,7 +84,7 @@ Node.prototype = {
 
   /**
    * Return this node.
-   * 
+   *
    * @return {Node}
    * @api public
    */

lib/nodes/null.js

@@ -24,7 +24,7 @@ var Null = module.exports = function Null(){};
  * Inherit from `Node.prototype`.
  */
 
-Null.prototype.__proto__ = Node.prototype;
+Object.setPrototypeOf(Null.prototype, Node.prototype);
 
 /**
  * Return 'Null'.
@@ -33,7 +33,7 @@ Null.prototype.__proto__ = Node.prototype;
  * @api public
  */
 
-Null.prototype.inspect = 
+Null.prototype.inspect =
 Null.prototype.toString = function(){
   return 'null';
 };

lib/nodes/object.js

@@ -29,7 +29,7 @@ var Object = module.exports = function Object(){
  * Inherit from `Node.prototype`.
  */
 
-Object.prototype.__proto__ = Node.prototype;
+globalThis.Object.setPrototypeOf(Object.prototype, Node.prototype);
 
 /**
  * Set `key` to `val`.

lib/nodes/params.js

@@ -40,7 +40,7 @@ Params.prototype.__defineGetter__('length', function(){
  * Inherit from `Node.prototype`.
  */
 
-Params.prototype.__proto__ = Node.prototype;
+Object.setPrototypeOf(Params.prototype, Node.prototype);
 
 /**
  * Push the given `node`.
@@ -55,7 +55,7 @@ Params.prototype.push = function(node){
 
 /**
  * Return a clone of this node.
- * 
+ *
  * @return {Node}
  * @api public
  */

lib/nodes/property.js

@@ -29,11 +29,11 @@ var Property = module.exports = function Property(segs, expr){
  * Inherit from `Node.prototype`.
  */
 
-Property.prototype.__proto__ = Node.prototype;
+Object.setPrototypeOf(Property.prototype, Node.prototype);
 
 /**
  * Return a clone of this node.
- * 
+ *
  * @return {Node}
  * @api public
  */