如何设置 VSCode 内联显示打字稿错误 [英] How to setup VSCode to show typescript error inline

问题描述

我正在尝试将 ES6 项目迁移到打字稿.这是我第一次尝试在 NodeJS 中编写 typescript 模块.

到目前为止，它似乎在 Angular-CLI 中工作得更好.

我已经使用命令行 tsc 编译它，但我不确定如何在代码编辑器中显示错误和智能感知?

在一个目录中，我有如下所示的两个文件.当它编译它时，正如预期的那样抛出一个编译错误:Supplied parameters do not match any signature of call 目标..这可以.

但是 VSCode 没有在编辑器中显示任何错误，即使我故意犯了一个语法错误，比如去掉括号，或者输入这样的错误.如何让 VSCode 在 .ts 文件的编辑器中显示内联语法或编译器错误?

validation-error.ts

/*** 包装特定的验证错误.*/导出类 ValidationError 扩展错误 {私有类型:字符串；构造函数(错误:任何){超级(错误)；Error.captureStackTrace(this, this.constructor);this.message = error.message;this.type = '验证错误';}}

然后我尝试编写简单的规范来测试工作流程:

validation-error.spec.ts

import { ValidationError } from './validation-error';import * as should from 'should';描述('验证错误'，()=> {it('应该创建一个新实例', () => {const 实例 = 新的 ValidationError();应该存在(实例)；});});

在此处

我仍在努力解决这个问题 - 我已经在 tasks.json 中设置了 tsc 以自动运行此作业:

<代码>{//参见 https://go.microsoft.com/fwlink/?LinkId=733558//有关tasks.json 格式的文档"taskName": "tsc","命令": "tsc",isShellCommand":真，"args": ["-w", "-p", "."],"problemMatcher": "$tsc-watch",回声命令":真}

我怀疑如果使用 $tsc-watch 正确报告了错误，该错误可能也会显示在编辑器中.当我运行任务时，我得到如下输出:

运行命令$ tsc -w -p .src/hello.ts(15,1): 错误 TS2346: 提供的参数与调用目标的任何签名都不匹配.下午 4:24:40 - 编译完成.监视文件更改.

但是在 Problems 视图中没有报告任何问题 - 即使显然存在编译器问题.

从文档的这个页面获得了 $tsc-watch 设置:

请尝试该设置并报告发生的情况.

I'm trying to migrate an ES6 project to typescript. This is my first attempt at writing a typescript module in NodeJS.

It seems to work better in Angular-CLI so far.

I've got it compiling using command line tsc, but I'm not sure how to display errors and intellisense in the code editor?

In a directory I have the two files shown below. When it compiles it, as expected throws a compile error: Supplied parameters do not match any signature of cal l target.. This is fine.

But VSCode is not showing any errors in the editor, even if I make a deliberate syntax error like taking out a bracket, or type errors like this one. How do I get VSCode to show inline syntax or compiler errors in the editor for .ts files?

validation-error.ts

/**
 * Wrapper for a particular validation error.
 */
export class ValidationError extends Error {
  private type: string;

  constructor(error: any) {
    super(error);
    Error.captureStackTrace(this, this.constructor);
    this.message = error.message;
    this.type = 'ValidationError';
  }
}

Then I'm trying to write simple spec to test out the workflow:

validation-error.spec.ts

import { ValidationError } from './validation-error';
import * as should from 'should';

describe('Validation Error', () => {
  it('should create a new instance', () => {
    const instance = new ValidationError();
    should.exist(instance);
  });
});

Edited Here:

I'm still plugging away at this - I've setup tsc to run automatically with this job in tasks.json:

{
  // See https://go.microsoft.com/fwlink/?LinkId=733558
  // for the documentation about the tasks.json format
  "taskName": "tsc",
  "command": "tsc",
  "isShellCommand": true,
  "args": ["-w", "-p", "."],
  "problemMatcher": "$tsc-watch",
  "echoCommand": true
}

I suspect that if the errors were reported properly using $tsc-watch, the error would probably also show up in the editor. When I run the task I get output like:

running command$ tsc -w -p .
src/hello.ts(15,1): error TS2346: Supplied parameters do not match any signature of call target.
4:24:40 PM - Compilation complete. Watching for file changes.

But there are no problems reported in the Problems view - even though clearly there's a compiler issue.

Got the $tsc-watch setting from this page of the docs: https://code.visualstudio.com/docs/editor/tasks

解决方案

Even without having installed TypeScript locally or globally, the following setup provides inline errors.

C:/temp
  index.ts
  tsconfig.json

index.ts

let x: number;
x = "foo";

tsconfig.json

{ }

Here is a screenshot that shows the inline error in x.

Please try that setup and report back on what happens.

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