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

To use the readlink function from the fs-extra library in TypeScript, we need to import the library and use the promisify function to convert the callback-based API into a Promise-based API. Here's an example:

index.ts
import * as fse from "fs-extra";
import { promisify } from "util";

const readlink = promisify(fse.readlink);

async function main() {
  try {
    const linkPath = "/path/to/link";
    const targetPath = await readlink(linkPath);
    console.log(`The target of the symlink at "${linkPath}" is "${targetPath}"`);
  } catch (err) {
    console.error(err);
  }
}

main();
369 chars
17 lines

In this example, we first import the fs-extra library and the promisify function from the util module. We then use promisify to create a Promise-based version of the readlink function.

We define an async main function that uses the Promise-based readlink function to get the target of a symlink at /path/to/link. We then log the result to the console.

If an error occurs, we catch it in the catch block and log it to the console.

Note that we use async/await syntax to make the code more readable and avoid callback hell. The main function is defined as async and we use await to call the readlink function, which returns a Promise. This way, we can write asynchronous code that looks synchronous.