how to use the lchmod function from the fs-extra library in typescript

To use the lchmod function from the fs-extra library in typescript, you first need to install the library using npm:

npm install fs-extra

Then, you can import the library and use the lchmod function in your code:

index.ts
import * as fse from 'fs-extra';

async function setFileMode() {
  try {
    await fse.lchmod('/path/to/file', 0o644);
    console.log('File mode changed successfully');
  } catch (err) {
    console.error(err);
  }
}

setFileMode();
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In this example, we are using the lchmod function to change the mode of a file to 0o644, which sets the file to be readable and writable by the owner, and readable by everyone else.

Note that we are using the async/await syntax to handle the function call, as the lchmod function is asynchronous and returns a Promise. Also note that we are using the full path to the file, rather than a relative path, to ensure that the function can find the file even if it is called from a different location.