直接运行ts文件

r囧r小猫 2022-12-03 01:52 347阅读 0赞

想用 ts 学习 Observable 的使用，又不想整个运行 angular 程序，所以想直接运行某一个ts文件。

法一：将 ts 编译成 js，然后运行 js 文件

**home.ts**

const { Observable } = require( 'rxjs');
    const observable = new Observable(subscriber => {
      subscriber.next(1);
      subscriber.next(2);
      subscriber.next(3);
      setTimeout(() => {
        subscriber.next(4);
        subscriber.complete();
      }, 1000);
    });
    console.log('before subscribe');
    observable.subscribe({
      next(x) { console.log('got value' + x); },
      error(x) { console.log('error' + x); },
      complete() { console.log('complete'); }
    });
    console.log('end subscribe');

编译：tsc home.ts       生成编译好的文件 home.js

运行：node home.js

![20200901133157756.png][]

法二：用 ts-node 直接运行 ts

npm install -g typescript
    npm install -g ts-node

运行：ts-node home.ts

![20200901133419877.png][]

注意 home.ts 的路径是否正确

**如何debug调试呢？**

创建 launch.json 文件

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zODg4MzMzOA_size_16_color_FFFFFF_t_70][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zODg4MzMzOA_size_16_color_FFFFFF_t_70 1][]

修改 launch.json 文件

{
        "version": "0.2.0",
        "configurations": [
            {
                "type": "node",
                "request": "launch",
                "name": "debug ts",
                "args": [
                  "${relativeFile}"
                ],
                "runtimeArgs": [
                  "--nolazy",
                  "-r",
                  "ts-node/register"
                ],
                "skipFiles": [
                    "<node_internals>/**"
                ],
                "program": "${file}",
                "sourceMaps": true,
                "cwd": "${workspaceRoot}",
                "protocol": "inspector",
                "console": "integratedTerminal",
                "internalConsoleOptions": "neverOpen"
            }
        ]
    }

这个配置会调试当前打开的 ts 文件

注意："ts-node/register" 配置会调用本地包，所以需要再次安装 ts-node

npm install typescript
    npm install ts-node

或是改为全局路径：C:\\Users\\hyn\\AppData\\Roaming\\npm\\node\_modules\\ts-node

打开 home.ts， 行号处打上断点，然后点击调试

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zODg4MzMzOA_size_16_color_FFFFFF_t_70 2][]

[20200901133157756.png]: /images/20221123/16fb71b295d3426db510128f95a0d7e9.png
[20200901133419877.png]: /images/20221123/7ac107985d7641fcb7f4833a82e71068.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zODg4MzMzOA_size_16_color_FFFFFF_t_70]: /images/20221123/9ea2e60c78504228a50f5bfcd0bdab95.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zODg4MzMzOA_size_16_color_FFFFFF_t_70 1]: /images/20221123/9e2dd38075554b83818705b95e7dc694.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zODg4MzMzOA_size_16_color_FFFFFF_t_70 2]: /images/20221123/8cef0250b67a464e912024c141c369a2.png