This code uses the iltorb library to synchronously compress data in Node.js, handling potential errors during the process.

Run example

npm run import -- "encode files with brotli"

encode files with brotli

const {compressSync} = require('iltorb');

try {
  var output = compressSync(input, {quality: 11});
} catch(err) {
  // ...
}

// Import the required module and its compressSync function
const iltorb = require('iltorb');
const { compressSync } = iltorb;

/**
 * Compress data using iltorb.
 *
 * @param {Uint8Array|Buffer|string} input - The data to be compressed.
 * @param {Object} options - Compression options.
 * @param {number} [options.quality=11] - The quality of the compression (range: 0-12).
 * @returns {Buffer} The compressed data.
 */
async function compressData(input, options = {}) {
  try {
    // Validate the input type
    if (typeof input!=='string' &&!(input instanceof Uint8Array || input instanceof Buffer)) {
      throw new Error('Invalid input type. Input must be a string, Uint8Array, or Buffer.');
    }

    // Validate the quality option
    if (options.quality < 0 || options.quality > 12) {
      throw new Error('Invalid quality option. Quality must be in the range of 0-12.');
    }

    // Compress the data
    const compressedData = await iltorb.compressSync(input, { quality: options.quality });

    return compressedData;
  } catch (err) {
    // Log the error and rethrow it
    console.error('Error compressing data:', err);
    throw err;
  }
}

// Example usage:
const inputData = 'Hello, World!';
compressData(inputData)
 .then((compressedData) => {
    console.log('Compressed data:', compressedData);
  })
 .catch((err) => {
    console.error('Error compressing data:', err);
  });

This code snippet demonstrates the use of the iltorb library for data compression in Node.js.

Here's a breakdown:

1. Importing the compressSync Function:

   • const {compressSync} = require('iltorb'); imports the compressSync function from the iltorb library. This function is likely a synchronous version of the compression function, meaning it will block execution until the compression is complete.

2. Compression Attempt:

   • try { var output = compressSync(input, {quality: 11}); } catch(err) { ... } attempts to compress the data stored in the input variable using the compressSync function.
   • The quality option is set to 11, which likely controls the compression level (higher values generally result in smaller file sizes but longer compression times).

3. Error Handling:

   • The try...catch block handles potential errors that might occur during the compression process. If an error (err) occurs, the code within the catch block will be executed.

In essence, this code snippet demonstrates how to use the iltorb library to compress data synchronously in Node.js, with error handling in place to gracefully handle any potential issues.