add a createAnchor helper

compiler/generate/index.js

@@ -45,6 +45,13 @@ export default function generate ( parsed, source, options ) {
 			}
 		},
 
+		createAnchor ( _name, description = '' ) {
+			const name = `${_name}_anchor`;
+			const statement = `document.createComment( ${JSON.stringify( description )} )`;
+			generator.addElement( name, statement, true );
+			return name;
+		},
+
 		addRenderer ( fragment ) {
 			if ( fragment.autofocus ) {
 				fragment.initStatements.push( `${fragment.autofocus}.focus();` );

compiler/generate/visitors/EachBlock.js

@@ -5,7 +5,6 @@ export default {
 	enter ( generator, node ) {
 		const i = generator.counters.each++;
 		const name = `eachBlock_${i}`;
-		const anchor = `${name}_anchor`;
 		const renderer = `renderEachBlock_${i}`;
 
 		const listName = `${name}_value`;
@@ -14,7 +13,7 @@ export default {
 
 		const { dependencies, snippet } = generator.contextualise( node.expression );
 
-		generator.addElement( anchor, `document.createComment( ${JSON.stringify( `#each ${generator.source.slice( node.expression.start, node.expression.end )}` )} )`, true );
+		const anchor = generator.createAnchor( name, `#each ${generator.source.slice( node.expression.start, node.expression.end )}` );
 
 		generator.current.initStatements.push( deindent`
 			var ${name}_value = ${snippet};

compiler/generate/visitors/IfBlock.js

@@ -56,13 +56,12 @@ export default {
 
 		const { params, target } = generator.current;
 		const name = `ifBlock_${i}`;
-		const anchor = `${name}_anchor`;
 		const getBlock = `getBlock_${i}`;
 		const currentBlock = `currentBlock_${i}`;
 
 		const conditionsAndBlocks = getConditionsAndBlocks( generator, node, `renderIfBlock_${i}` );
 
-		generator.addElement( anchor, `document.createComment( ${JSON.stringify( `#if ${generator.source.slice( node.expression.start, node.expression.end )}` )} )`, true );
+		const anchor = generator.createAnchor( name, `#if ${generator.source.slice( node.expression.start, node.expression.end )}` );
 
 		generator.current.initStatements.push( deindent`
 			function ${getBlock} ( ${params} ) {