fix(compiler): Generates function expressions as returning any (#9980)

Function expressions are used in an expression context so untyped
function expressions should have any as the result type.

Fixes: #9877

modules/@angular/compiler-cli/integrationtest/src/queries.ts

@@ -6,7 +6,8 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {Component, QueryList, ViewChild, ViewChildren} from '@angular/core';
+import {NgFor} from '@angular/common';
+import {Component, Directive, QueryList, ViewChild, ViewChildren} from '@angular/core';
 
 @Component({selector: 'comp-for-child-query', template: 'child'})
 export class CompForChildQuery {
@@ -21,3 +22,20 @@ export class CompWithChildQuery {
   @ViewChild(CompForChildQuery) child: CompForChildQuery;
   @ViewChildren(CompForChildQuery) children: QueryList<CompForChildQuery>;
 }
+
+@Directive({selector: '[directive-for-query]'})
+export class DirectiveForQuery {
+}
+
+@Component({
+  selector: 'comp-with-directive-child',
+  directives: [DirectiveForQuery, NgFor],
+  template: `<div>
+     <div *ngFor="let data of divData" directive-for-query>{{data}}</div>
+  </div>`
+})
+export class CompWithDirectiveChild {
+  @ViewChildren(DirectiveForQuery) children: QueryList<DirectiveForQuery>;
+
+  divData: string[];
+}

modules/@angular/compiler/src/output/ts_emitter.ts

@@ -170,7 +170,7 @@ class _TsEmitterVisitor extends AbstractEmitterVisitor implements o.TypeVisitor
     ctx.print(`(`);
     this._visitParams(ast.params, ctx);
     ctx.print(`):`);
-    this.visitType(ast.type, ctx, 'void');
+    this.visitType(ast.type, ctx);
     ctx.println(` => {`);
     ctx.incIndent();
     this.visitAllStatements(ast.statements, ctx);

modules/@angular/compiler/test/output/ts_emitter_spec.ts

@@ -143,11 +143,11 @@ export function main() {
     });
 
     it('should support function expressions', () => {
-      expect(emitStmt(o.fn([], []).toStmt())).toEqual(['():void => {', '};'].join('\n'));
+      expect(emitStmt(o.fn([], []).toStmt())).toEqual(['():any => {', '};'].join('\n'));
       expect(emitStmt(o.fn([], [new o.ReturnStatement(o.literal(1))], o.INT_TYPE).toStmt()))
           .toEqual(['():number => {', '  return 1;\n};'].join('\n'));
       expect(emitStmt(o.fn([new o.FnParam('param1', o.INT_TYPE)], []).toStmt())).toEqual([
-        '(param1:number):void => {', '};'
+        '(param1:number):any => {', '};'
       ].join('\n'));
     });