TypeScript @angular-compiler-src-output-output_ast.expressionType类(方法)实例源码

it('should support expression types', () => {
   expect(emitStmt(o.variable('a')
                       .set(o.NULL_EXPR)
                       .toDeclStmt(o.expressionType(
                           o.variable('b'), [o.expressionType(o.variable('c'))]))))
       .toEqual('var a:b<c> = (null as any);');
 });

it('should support expression types', () => {
   expect(emitStmt(o.variable('a').set(o.NULL_EXPR).toDeclStmt(o.expressionType(o.variable('b')))))
       .toEqual('var a = null;');
 });