Move EachBlock and RawMustache detach code into shared

src/generators/dom/visitors/EachBlock.js

@@ -132,9 +132,7 @@ export default {
 					}
 				}
 
-				for ( var ${i} = ${name}_value.length; ${i} < ${iterations}.length; ${i} += 1 ) {
+				teardownEach( ${iterations}, true, ${name}_value.length );
-					${iterations}[${i}].teardown( true );
-				}
 
 				${iterations}.length = ${listName}.length;
 			` );
@@ -153,11 +151,9 @@ export default {
 			` );
 		}
 
-		generator.current.builders.teardown.addBlock( deindent`
+		generator.uses.teardownEach = true;
-			for ( var ${i} = 0; ${i} < ${iterations}.length; ${i} += 1 ) {
+		generator.current.builders.teardown.addBlock(
-				${iterations}[${i}].teardown( ${isToplevel ? 'detach' : 'false'} );
+			`teardownEach( ${iterations}, ${isToplevel ? 'detach' : 'false'} );` );
-			}
-		` );
 
 		if ( node.else ) {
 			generator.current.builders.teardown.addBlock( deindent`

src/generators/dom/visitors/RawMustacheTag.js

@@ -1,5 +1,3 @@
-import deindent from '../../../utils/deindent.js';
-
 export default {
 	enter ( generator, node ) {
 		const name = generator.current.getUniqueName( 'raw' );
@@ -20,11 +18,8 @@ export default {
 		const isToplevel = generator.current.localElementDepth === 0;
 
 		const mountStatement = `${before}.insertAdjacentHTML( 'afterend', ${snippet} );`;
-		const detachStatement = deindent`
+		generator.uses.detachBetween = true;
-			while ( ${before}.nextSibling && ${before}.nextSibling !== ${after} ) {
+		const detachStatement = `detachBetween( ${before}, ${after} );`;
-				${before}.parentNode.removeChild( ${before}.nextSibling );
-			}
-		`;
 
 		if ( isToplevel ) {
 			generator.current.builders.mount.addLine( mountStatement );

src/shared/dom.js

@@ -10,6 +10,18 @@ export function detachNode ( node ) {
 	node.parentNode.removeChild( node );
 }
 
+export function detachBetween ( before, after ) {
+	while ( before.nextSibling && before.nextSibling !== after ) {
+		before.parentNode.removeChild( before.nextSibling );
+	}
+}
+
+export function teardownEach ( iterations, detach, start ) {
+	for ( var i = ( start || 0 ); i < iterations.length; i += 1 ) {
+		iterations[i].teardown( detach );
+	}
+}
+
 export function createElement ( name ) {
 	return document.createElement( name );
 }