add Super node

src/ast/nodes/Identifier.js

@@ -17,6 +17,12 @@ function isAssignmentPatternLhs ( node, parent ) {
 }
 
 export default class Identifier extends Node {
+	activate () {
+		if ( this.declaration ) {
+			this.declaration.activate();
+		}
+	}
+
 	bind ( scope ) {
 		if ( isReference( this, this.parent ) || isAssignmentPatternLhs( this, this.parent ) ) {
 			this.declaration = scope.findDeclaration( this.name );

src/ast/nodes/Super.js

@@ -0,0 +1,13 @@
+import Node from '../Node.js';
+
+export default class Super extends Node {
+	call ( context, args ) {
+		const classDeclaration = this.findParent( /ClassDeclaration/ );
+		context = 'TODO';
+		classDeclaration.call( context, args ); // TODO call constructor, not the class itself...
+	}
+
+	markReturnStatements () {
+		// noop?
+	}
+}

src/ast/nodes/index.js

@@ -27,6 +27,7 @@ import NewExpression from './NewExpression.js';
 import ObjectExpression from './ObjectExpression.js';
 import ReturnStatement from './ReturnStatement.js';
 import Statement from './shared/Statement.js';
+import Super from './Super.js';
 import TemplateLiteral from './TemplateLiteral.js';
 import ThisExpression from './ThisExpression.js';
 import ThrowStatement from './ThrowStatement.js';
@@ -65,6 +66,7 @@ export default {
 	NewExpression,
 	ObjectExpression,
 	ReturnStatement,
+	Super,
 	SwitchStatement: Statement,
 	TemplateLiteral,
 	ThisExpression,

test/form/dedupes-external-imports/_config.js

@@ -1,4 +1,5 @@
 module.exports = {
+	solo: true,
 	description: 'dedupes external imports',
 	options: {
 		external: [ 'external' ],