# legacy Legacy-framework detectors for projects still on pre-modern stacks. Covers AngularJS (1.x), Backbone, Ember, and jQuery. Each `Detector` follows the shared [`LegacyFrameworkDetector`](https://www.hyperfrontend.dev/docs/libraries/project-scope/tech/legacy/#api-LegacyFrameworkDetector) contract; [`detectLegacyFrameworks`](https://www.hyperfrontend.dev/docs/libraries/project-scope/tech/legacy/#api-detectLegacyFrameworks) runs them all and returns the aggregate `LegacyFrameworkDetection[]`. Useful for migration-planning tools that need to flag projects still depending on these frameworks before recommending modernization paths. --- Canonical page: https://www.hyperfrontend.dev/docs/libraries/project-scope/tech/legacy/ This file: https://www.hyperfrontend.dev/docs/libraries/project-scope/tech/legacy.md Documentation index: https://www.hyperfrontend.dev/llms.txt