fix(language-core): ignore hoist variables error

Author: KazariEX

packages/language-core/lib/codegen/template/context.ts

@@ -129,8 +129,13 @@ export function createTemplateCodegenContext(options: Pick<TemplateCodegenOption
 		},
 		generateHoistVariables: function* () {
 			// trick to avoid TS 4081 (#5186)
-			for (const [originalVar, hoistVar] of hoistVars) {
-				yield `var ${hoistVar} = ${originalVar}${endOfLine}`;
+			if (hoistVars.size) {
+				yield `// @ts-ignore${newLine}`;
+				yield `var `
+				for (const [originalVar, hoistVar] of hoistVars) {
+					yield `${hoistVar} = ${originalVar}, `;
+				}
+				yield endOfLine;
 			}
 		},
 		ignoreError: function* (): Generator<Code> {

packages/tsc/tests/__snapshots__/dts.spec.ts.snap

@@ -587,14 +587,11 @@ export {};
 
 exports[`vue-tsc-dts > Input: template-slots/component.vue, Output: template-slots/component.vue.d.ts 1`] = `
 "declare const __VLS_ctx: InstanceType<__VLS_PickNotAny<typeof __VLS_self, new () => {}>>;
-declare var __VLS_1: {};
-declare var __VLS_3: {
+declare var __VLS_1: {}, __VLS_3: {
     num: number;
-};
-declare var __VLS_5: {
+}, __VLS_5: {
     str: string;
-};
-declare var __VLS_7: {
+}, __VLS_7: {
     num: number;
     str: string;
 };
@@ -664,14 +661,11 @@ type __VLS_WithSlots<T, S> = T & {
 
 exports[`vue-tsc-dts > Input: template-slots/component-no-script.vue, Output: template-slots/component-no-script.vue.d.ts 1`] = `
 "declare const __VLS_ctx: InstanceType<__VLS_PickNotAny<typeof __VLS_self, new () => {}>>;
-declare var __VLS_1: {};
-declare var __VLS_3: {
+declare var __VLS_1: {}, __VLS_3: {
     num: number;
-};
-declare var __VLS_5: {
+}, __VLS_5: {
     str: string;
-};
-declare var __VLS_7: {
+}, __VLS_7: {
     num: number;
     str: string;
 };