by FIT Parser is the MIT-licensed JavaScript and TypeScript library published on npm as fit-file-parser. It parses and encodes FIT activity files, supports developer-defined data and raw messages, and provides browser and Node.js inputs with ESM and CommonJS builds.
It is a reusable dependency for applications importing activity data from compatible sports devices. Sports Lib depends on it, and Quantified Self is a downstream application. Independent repository manifests also declare it as a dependency. The npm listing observed on 4 November 2026 reported approximately 49,000 weekly downloads and 12 dependent packages; downloads are not distinct users. Package: https://www.npmjs.com/package/fit-file-parser
Funding would support issue triage, reproducible compatibility fixes, activity-file regression fixtures, release maintenance and migration guidance. Existing validation tests, compatibility checks and documentation are a foundation to extend, rather than replace.
It is a reusable dependency for applications importing activity data from compatible sports devices. Sports Lib depends on it, and Quantified Self is a downstream application. Independent repository manifests also declare it as a dependency. The npm listing observed on 4 November 2026 reported approximately 49,000 weekly downloads and 12 dependent packages; downloads are not distinct users. Package: https://www.npmjs.com/package/fit-file-parser
Funding would support issue triage, reproducible compatibility fixes, activity-file regression fixtures, release maintenance and migration guidance. Existing validation tests, compatibility checks and documentation are a foundation to extend, rather than replace.
github.com/jimmykane/fit-parser
github.com/jimmykane/fit-parserWed, 04 Nov 2026 11:41:53 UTC
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Crawl errorerror: https://github.com/jimmykane/open-source-funding/blob/main/funding.json?raw=true returned 429