File System in Next.js

1import { promises as fs } from 'fs';
2import path from 'path';
3
4/** ... **/
5
6const getFiles = async (dir, filelist = []) => {
7    const files = await fs.readdir(dir);
8    
9    for (const file of files) {
10      const filepath = path.join(dir, file);
11      const stat = await fs.stat(filepath);
12      
13      if (stat.isDirectory()) {
14        filelist = await getFiles(filepath, filelist);
15      } else {
16        filelist.push(filepath);
17      }
18    }
19    
20    return filelist;
21  };
22  
23const scriptDir = path.join(process.cwd(), ".next", "static", "chunks");
24const scriptFiles = await getFiles(scriptDir);

1import { promises as fs } from 'fs';
2import path from 'path';
3
4/** ... **/
5
6// Asynchronously write to a file
7await fs.writeFile('example.txt', content, 'utf8', (err) => {
8  if (err) {
9    console.error('An error occurred while writing to the file:', err);
10    return;
11  }
12  console.log('File has been written successfully');
13});
14
15// Synchronously write to a file
16try {
17  await fs.writeFileSync('example.txt', content, 'utf8');
18  console.log('File has been written successfully');
19} catch (err) {
20  console.error('An error occurred while writing to the file:', err);
21}

1import { promises as fs } from 'fs';
2import path from 'path';
3
4/** ... **/
5
6const additionalContent = '\nThis is the additional content to append to the file';
7
8// Asynchronously append to a file
9await fs.appendFile('example.txt', additionalContent, 'utf8', (err) => {
10  if (err) {
11    console.error('An error occurred while appending to the file:', err);
12    return;
13  }
14  console.log('Content has been appended successfully');
15});
16
17// Synchronously append to a file
18try {
19  await fs.appendFileSync('example.txt', additionalContent, 'utf8');
20  console.log('Content has been appended successfully');
21} catch (err) {
22  console.error('An error occurred while appending to the file:', err);
23}
24