{"slug": "wasm-csv-validator", "title": "WASM CSV validator", "summary": "A developer created a WASM CSV validator that lets users define a schema with column names, types, and required attributes, returning either error lists or successful validation before upload, eliminating the need to send entire files to the server.", "body_md": "*For quite some time now, I’ve wanted to improve the way our users upload their CSV files. Before this wasm program, it was a nightmare to correct all the encodings, wrong types, column mapping, etc., and I didn’t want to upload the whole file to the server and perform all those validations and checks there.\n\nThis wasm module allows us to define a schema that contains column names, types, and whether each attribute is required or not. The outcome is either a list of errors to fix or a successful validation of the CSV, ready to be uploaded.\n\nThanks for your time!*\n\nAI was used to generate use cases, tests and documentation.", "url": "https://wpnews.pro/news/wasm-csv-validator", "canonical_source": "https://ziggit.dev/t/wasm-csv-validator/16985#post_1", "published_at": "2026-07-29 14:19:18+00:00", "updated_at": "2026-07-29 14:29:15.195973+00:00", "lang": "en", "topics": ["developer-tools"], "entities": [], "alternates": {"html": "https://wpnews.pro/news/wasm-csv-validator", "markdown": "https://wpnews.pro/news/wasm-csv-validator.md", "text": "https://wpnews.pro/news/wasm-csv-validator.txt", "jsonld": "https://wpnews.pro/news/wasm-csv-validator.jsonld"}}