如何升级 Node 文件中的特定包？

Question

I have a Node project with the following structure:

.
├── index.js
├── package.json
├── updater.js
└── yarn.lock

I'm using Yarn with this project.

Inside file: package.json there is a reference to package: @emotion/core@^10.0.22 as you can see below:

{
  "name": "my-project",
  ...
  "dependencies": {
    ...
    "@emotion/core": "^10.0.22",
    ...
  }
  ...
}

What I need is:

From inside file: updater.js file, upgrade package: @emotion/core to version: ^10.0.27 (just in case, remember I'm using Yarn ), so I can do:

$ node updater.js

From the command line I can achieve this very easily with:

$ yarn upgrade @emotion/core@^10.0.27

But I need to do this from inside the file: updater.js (this is a requirement). This is a simplification of a biggest problem (so I need to meet the requirements of this dummy use case even if it doesn't make sense).

This code will go inside a custom package that will take care of installing some other packages.

Thanks in advance!

Answer 1

The easiest will be using child_process to execute any script:

const { exec } = require('child_process');

 const childProcess = exec('yarn upgrade @emotion/core@^10.0.27', (error, stdout, stderr) => {
     console.log('stdout: ' + stdout);
     console.log('stderr: ' + stderr);
     if (error !== null) {
          console.log('exec error: ' + error);
     }
 });

You can check out more at node.js document page

You can pipe the stdio for close-to-realtime outputs by doing:

childProcess.stdout.pipe(process.stdout)

But beware using *Sync (like execSync ) libraries, you should NOT block code whenever possible. Better using callback or make it Promise

Also there are wonderful packages like shelljs to encapsulate this.