CSV Processor - Streaming CSV Parse & Generate

Description

Provides streaming CSV parse and generate patterns for NodeJS-Starter-V1, covering large file imports, exports, and transformations across Next.js frontend and FastAPI backend. Enforces row-by-row streaming, Zod and Pydantic row validation, and Australian locale formatting (DD/MM/YYYY dates, AUD currency).

When to Apply

Positive Triggers

• Importing CSV files from user uploads
• Exporting data to CSV for download (contractors, reports, agent runs)
• Parsing large CSV datasets (1,000+ rows)
• Validating CSV row structure against a schema
• Transforming CSV data between formats
• User mentions: "CSV", "import", "export", "spreadsheet", "download data", "upload file"