revert: type support of slot children (#5137) (#5514)

Author: KazariEX

extensions/vscode/schemas/vue-tsconfig.schema.json

@@ -49,11 +49,6 @@
 					"default": false,
 					"markdownDescription": "Enables strict templates. When set to `true`, all `checkUnknown*` options will be enabled."
 				},
-				"strictSlotChildren": {
-					"type": "boolean",
-					"default": false,
-					"markdownDescription": "Strict type constraints of slot children. If not set, uses the 'strictTemplates' value."
-				},
 				"strictVModel": {
 					"type": "boolean",
 					"default": false,

packages/language-core/lib/codegen/globalTypes.ts

@@ -87,14 +87,6 @@ export function generateGlobalTypes({
 			expose?: (exposed: T) => void,
 		}
 	};
-	type __VLS_NormalizeSlotReturns<S, R = NonNullable<S> extends (...args: any) => infer K ? K : any> = R extends any[] ? {
-		[K in keyof R]: R[K] extends infer V
-			? V extends Element ? V
-			: V extends new (...args: any) => infer R ? ReturnType<__VLS_FunctionalComponent<R>>
-			: V extends (...args: any) => infer R ? R
-			: any
-			: never
-	} : R;
 	type __VLS_IsFunction<T, K> = K extends keyof T
 		? __VLS_IsAny<T[K]> extends false
 		? unknown extends T[K]

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

@@ -213,7 +213,6 @@ export function createTemplateCodegenContext(
 		templateRefs,
 		currentComponent: undefined as {
 			ctxVar: string;
-			childTypes: string[];
 			used: boolean;
 		} | undefined,
 		singleRootElTypes: [] as string[],

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

@@ -41,10 +41,8 @@ export function* generateComponent(
 	const componentCtxVar = ctx.getInternalVariable();
 	const isComponentTag = node.tag.toLowerCase() === 'component';
 
-	ctx.currentComponent?.childTypes.push(`typeof ${componentVNodeVar}`);
 	ctx.currentComponent = {
 		ctxVar: componentCtxVar,
-		childTypes: [],
 		used: false,
 	};
 
@@ -305,8 +303,6 @@ export function* generateElement(
 		: undefined;
 	const failedPropExps: FailedPropExpression[] = [];
 
-	ctx.currentComponent?.childTypes.push(`__VLS_NativeElements['${node.tag}']`);
-
 	yield `__VLS_asFunctionalElement(__VLS_elements`;
 	yield* generatePropertyAccess(
 		options,

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

@@ -78,19 +78,6 @@ export function* generateVSlot(
 		ctx.removeLocalVariable(varName);
 	}
 
-	if (options.vueCompilerOptions.strictSlotChildren && node.children.length) {
-		yield `(): __VLS_NormalizeSlotReturns<typeof ${slotVar}> => (`;
-		yield* wrapWith(
-			node.loc.start.offset,
-			node.loc.end.offset,
-			ctx.codeFeatures.verification,
-			`{} as [`,
-			...ctx.currentComponent.childTypes.map(name => `${name}, `),
-			`]`,
-		);
-		yield `)${endOfLine}`;
-	}
-
 	if (slotDir) {
 		let isStatic = true;
 		if (slotDir.arg?.type === CompilerDOM.NodeTypes.SIMPLE_EXPRESSION) {

packages/language-core/lib/types.ts

@@ -30,7 +30,6 @@ export interface VueCompilerOptions {
 	vitePressExtensions: string[];
 	petiteVueExtensions: string[];
 	jsxSlots: boolean;
-	strictSlotChildren: boolean;
 	strictVModel: boolean;
 	strictCssModules: boolean;
 	checkUnknownProps: boolean;

packages/language-core/lib/utils/ts.ts

@@ -293,7 +293,6 @@ export function getDefaultCompilerOptions(target = 99, lib = 'vue', strictTempla
 		vitePressExtensions: [],
 		petiteVueExtensions: [],
 		jsxSlots: false,
-		strictSlotChildren: strictTemplates,
 		strictVModel: strictTemplates,
 		strictCssModules: false,
 		checkUnknownProps: strictTemplates,