remove some unused code

src/generators/Generator.js

@@ -151,13 +151,11 @@ export default class Generator {
 		};
 	}
 
-	findDependencies ( block, expression, isEventHandler ) {
+	findDependencies ( contextDependencies, expression ) {
 		if ( expression._dependencies ) return expression._dependencies;
 
-		const dependencies = [];
-		const { contextDependencies, contexts } = block;
-
 		let scope = annotateWithScopes( expression );
+		const dependencies = [];
 
 		walk( expression, {
 			enter ( node, parent ) {
@@ -170,9 +168,7 @@ export default class Generator {
 					const { name } = flattenReference( node );
 					if ( scope.has( name ) ) return;
 
-					if ( name === 'event' && isEventHandler ) {
-						// noop
-					} else if ( contexts.has( name ) ) {
+					if ( contextDependencies.has( name ) ) {
 						dependencies.push( ...contextDependencies.get( name ) );
 					} else {
 						dependencies.push( name );

src/generators/dom/Block.js

@@ -74,8 +74,8 @@ export default class Block {
 		this.addElement( name, renderStatement, parentNode, true );
 	}
 
-	findDependencies ( expression, isEventHandler ) {
-		return this.generator.findDependencies( this, expression, isEventHandler );
+	findDependencies ( expression ) {
+		return this.generator.findDependencies( this.contextDependencies, expression );
 	}
 
 	mount ( name, parentNode ) {

src/generators/dom/preprocess.js

@@ -127,14 +127,6 @@ const preprocessors = {
 				const dependencies = block.findDependencies( attribute.value );
 				block.addDependencies( dependencies );
 			}
-
-			// else if ( attribute.type === 'EventHandler' ) {
-			// 	// TODO is this necessary?
-			// 	attribute.expression.arguments.forEach( arg => {
-			// 		const dependencies = block.findDependencies( arg );
-			// 		block.addDependencies( dependencies );
-			// 	});
-			// }
 		});
 
 		const isComponent = generator.components.has( node.name ) || node.name === ':Self';
@@ -175,6 +167,7 @@ export default function preprocess ( generator, children ) {
 
 		contexts: new Map(),
 		indexes: new Map(),
+		contextDependencies: new Map(),
 
 		params: [ 'root' ],
 		indexNames: new Map(),