mostly fix insane node 4 issue

src/generators/dom/index.js

@@ -119,8 +119,9 @@ class DomGenerator extends Generator {
 		}
 	}
 
-	generateBlock ( node, name ) {
+	generateBlock ( node, name, type ) {
 		this.push({
+			type,
 			name,
 			target: 'target',
 			localElementDepth: 0,
@@ -203,6 +204,7 @@ export default function dom ( parsed, source, options ) {
 	const component = getUniqueName( 'component' );
 
 	generator.push({
+		type: 'block',
 		name: generator.alias( 'render_main_fragment' ),
 		namespace,
 		target: 'target',

src/generators/dom/utils/findBlock.js

@@ -0,0 +1,4 @@
+export default function findBlock ( fragment ) {
+	while ( fragment.type !== 'block' ) fragment = fragment.parent;
+	return fragment;
+}

src/generators/dom/visitors/Component.js

@@ -67,7 +67,7 @@ export default {
 			const yieldName = generator.getUniqueName( `render_${name}_yield_fragment` );
 			const params = current.params.join( ', ' );
 
-			generator.generateBlock( node, yieldName );
+			generator.generateBlock( node, yieldName, 'yield' );
 
 			const yieldFragment = current.getUniqueName( `${name}_yield_fragment` );
 
@@ -151,6 +151,7 @@ export default {
 		if ( !local.update.isEmpty() ) current.builders.update.addBlock( local.update );
 
 		generator.push({
+			type: 'component',
 			namespace: local.namespace,
 			target: name,
 			parent: current,

src/generators/dom/visitors/EachBlock.js

@@ -168,7 +168,7 @@ export default {
 		}
 
 		if ( node.else ) {
-			generator.generateBlock( node.else, renderElse );
+			generator.generateBlock( node.else, renderElse, 'block' );
 		}
 
 		const indexNames = new Map( generator.current.indexNames );
@@ -193,6 +193,7 @@ export default {
 		const getUniqueName = generator.getUniqueNameMaker( blockParams );
 
 		generator.push({
+			type: 'block',
 			name: renderer,
 			target: 'target',
 			expression: node.expression,

src/generators/dom/visitors/Element.js

@@ -101,6 +101,7 @@ export default {
 		generator.createMountStatement( name );
 
 		generator.push({
+			type: 'element',
 			namespace: local.namespace,
 			target: name,
 			parent: generator.current,

src/generators/dom/visitors/IfBlock.js

@@ -9,7 +9,7 @@ function getConditionsAndBlocks ( generator, node, _name, i = 0 ) {
 		block: name
 	}];
 
-	generator.generateBlock( node, name );
+	generator.generateBlock( node, name, 'block' );
 
 	if ( node.else && node.else.children.length === 1 &&
 		node.else.children[0].type === 'IfBlock' ) {
@@ -24,7 +24,7 @@ function getConditionsAndBlocks ( generator, node, _name, i = 0 ) {
 		});
 
 		if ( node.else ) {
-			generator.generateBlock( node.else, name );
+			generator.generateBlock( node.else, name, 'block' );
 		}
 	}
 	return conditionsAndBlocks;

src/generators/dom/visitors/MustacheTag.js

@@ -1,4 +1,5 @@
 import deindent from '../../../utils/deindent.js';
+import findBlock from '../utils/findBlock.js';
 
 export default {
 	enter ( generator, node ) {
@@ -9,12 +10,12 @@ export default {
 		generator.current.builders.init.addLine( `var last_${name} = ${snippet};` );
 		generator.addElement( name, `${generator.helper( 'createText' )}( last_${name} )`, true );
 
-		if ( !generator.current.tmp ) {
+		const fragment = findBlock( generator.current );
-			generator.current.tmp = generator.current.getUniqueName( 'tmp' );
+		if ( !fragment.tmp ) fragment.tmp = fragment.getUniqueName( 'tmp' );
-		}
+
 		generator.current.builders.update.addBlock( deindent`
-			if ( ( ${generator.current.tmp} = ${snippet} ) !== last_${name} ) {
+			if ( ( ${fragment.tmp} = ${snippet} ) !== last_${name} ) {
-				${name}.data = last_${name} = ${generator.current.tmp};
+				${name}.data = last_${name} = ${fragment.tmp};
 			}
 		` );
 	}

src/generators/dom/visitors/RawMustacheTag.js

@@ -1,4 +1,5 @@
 import deindent from '../../../utils/deindent.js';
+import findBlock from '../utils/findBlock.js';
 
 export default {
 	enter ( generator, node ) {
@@ -26,12 +27,12 @@ export default {
 			generator.current.builders.init.addLine( mountStatement );
 		}
 
-		if ( !generator.current.tmp ) {
+		const fragment = findBlock( generator.current );
-			generator.current.tmp = generator.current.getUniqueName( 'tmp' );
+		if ( !fragment.tmp ) fragment.tmp = fragment.getUniqueName( 'tmp' );
-		}
+
 		generator.current.builders.update.addBlock( deindent`
-			if ( ( ${generator.current.tmp} = ${snippet} ) !== last_${name} ) {
+			if ( ( ${fragment.tmp} = ${snippet} ) !== last_${name} ) {
-				last_${name} = ${generator.current.tmp};
+				last_${name} = ${fragment.tmp};
 				${detachStatement}
 				${mountStatement}
 			}

src/generators/dom/visitors/attributes/addElementAttributes.js

@@ -3,6 +3,7 @@ import addElementBinding from './addElementBinding';
 import deindent from '../../../../utils/deindent.js';
 import flattenReference from '../../../../utils/flattenReference.js';
 import getStaticAttributeValue from './binding/getStaticAttributeValue.js';
+import findBlock from '../../utils/findBlock.js';
 
 export default function addElementAttributes ( generator, node, local ) {
 	node.attributes.forEach( attribute => {
@@ -105,12 +106,12 @@ export default function addElementAttributes ( generator, node, local ) {
 					}
 
 					local.init.addLine( updater );
-					if ( !generator.current.tmp ) {
+					const fragment = findBlock( generator.current );
-						generator.current.tmp = generator.current.getUniqueName( 'tmp' );
+					if ( !fragment.tmp ) fragment.tmp = fragment.getUniqueName( 'tmp' );
-					}
+
 					local.update.addBlock( deindent`
-						if ( ( ${generator.current.tmp} = ${snippet} ) !== ${last} ) {
+						if ( ( ${fragment.tmp} = ${snippet} ) !== ${last} ) {
-							${last} = ${generator.current.tmp};
+							${last} = ${fragment.tmp};
 							${updater}
 						}
 					` );