A library for bulk insertion of data into your database using ActiveRecord.
Fastest end-to-end CSV ingestion for Ruby (with C acceleration). SmarterCSV auto-detects formats, applies smart defaults, and returns Rails-ready hashes for seamless use with ActiveRecord, Sidekiq, parallel jobs, and S3 pipelines — even for messy user-uploaded real-world data.
Use ESM with importmap to manage modern JavaScript in Rails without transpiling or bundling.