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

index.ts
npm install fs-extra
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index.ts
import * as fs from 'fs-extra';
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index.ts
fs.ftruncate(fd, length, callback);
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index.ts
import * as fs from 'fs-extra';

const FILE_PATH = '/path/to/file.txt';
const TRUNCATE_LENGTH = 100;

// Open the file for reading and writing
fs.open(FILE_PATH, 'r+', (err, fd) => {
  if (err) {
    console.log(err);
    return;
  }

  // Truncate the file to the specified length
  fs.ftruncate(fd, TRUNCATE_LENGTH, (err) => {
    if (err) {
      console.log(err);
      return;
    }

    console.log(`File truncated to ${TRUNCATE_LENGTH} bytes`);

    // Close the file descriptor
    fs.close(fd, (err) => {
      if (err) {
        console.log(err);
      }
    });
  });
});
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