doh

src/compiler/compile/render_dom/wrappers/EachBlock.ts

@@ -463,7 +463,7 @@ export default class EachBlockWrapper extends Wrapper {
 						}
 					`;
 
-			const start = this.block.has_update_method ? '0' : `old_length`;
+			const start = this.block.has_update_method ? '0' : `#old_length`;
 
 			let remove_old_blocks;
 
@@ -482,7 +482,7 @@ export default class EachBlockWrapper extends Wrapper {
 				`;
 			} else {
 				remove_old_blocks = deindent`
-					for (${this.block.has_update_method ? `` : `#i = ${this.vars.each_block_value}.${length}`}; #i < ${this.block.has_update_method ? view_length : 'old_length'}; #i += 1) {
+					for (${this.block.has_update_method ? `` : `#i = ${this.vars.each_block_value}.${length}`}; #i < ${this.block.has_update_method ? view_length : '#old_length'}; #i += 1) {
 						${iterations}[#i].d(1);
 					}
 					${!fixed_length && `${view_length} = ${this.vars.each_block_value}.${length};`}
@@ -490,7 +490,7 @@ export default class EachBlockWrapper extends Wrapper {
 			}
 
 			const update = deindent`
-				${!this.block.has_update_method && `const old_length = ${this.vars.each_block_value}.length;`}
+				${!this.block.has_update_method && `const #old_length = ${this.vars.each_block_value}.length;`}
 				${this.vars.each_block_value} = ${snippet};
 
 				for (var #i = ${start}; #i < ${this.vars.each_block_value}.${length}; #i += 1) {