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Immutable.js

Immutable.js is a JavaScript library developed by Facebook that provides immutable data structures for more predictable state management in applications.

facebook.github.io/immutable-js

Sites using it
2

Usage over time

Trend data starts with the first full crawl. We take a snapshot of every technology's usage at the end of each monthly crawl cycle, so the first point appears once the current cycle completes and the trend line after the second.

Market share

Share of indexed sites in the category that use Immutable.js.

2 sites use Immutable.js

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  • myheritage.comsince 28 Sept 2026
  • ciditools.comsince 28 Sept 2026