Recipe 05: Performance for large files

Current version: 3.1.0

Goal

Process large CSV files without blowing memory.

Example (Node.js streaming)

const { createCsvFileToJsonStream } = require('jtcsv');

(async () => {
  const stream = await createCsvFileToJsonStream('large.csv', {
    parseNumbers: true,
    hasHeaders: true
  });

  for await (const row of stream) {
    // Process row-by-row
  }
})();

Tips

• Prefer streaming for files >10MB.
• Use fastPathMode: 'compact' if memory is tight.
• Avoid loading huge CSV strings into memory.

Navigation

• Previous: Convert between CSV, TSV, and NDJSON
• Next: Type coercion and custom parsing