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

To use the writeJson function from the fs-extra library in TypeScript, you need to import the function from the library and call it in your code.

Here's an example of how to use writeJson in TypeScript:

index.ts
import { writeJson } from 'fs-extra';

interface Person {
  name: string;
  age: number;
}

const person: Person = {
  name: 'John Doe',
  age: 30,
};

// define the output file path
const filePath = './person.json';

// write the JSON object to a file
writeJson(filePath, person, (err) => {
  if (err) {
    console.error(err);
    return;
  }
  console.log(`The ${filePath} file has been saved!`);
});
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In this example, we defined an interface Person to help us define the structure of our JSON object. We then created a person object that matches the Person interface, and defined the output file path for our JSON file.

Finally, we called the writeJson function with the file path, the object we want to write to the file, and a callback function that logs any errors or success messages to the console.

This code will write a file called person.json with the content of the person object.