jest-haste-map is a core component of Jest, Facebook's JavaScript testing framework. It efficiently crawls and caches file system information to accelerate test execution. This package creates a dependency graph of your project's modules, enabling Jest to quickly identify and load necessary files during testing. jest-haste-map optimizes performance by tracking file changes and only updating the cache when modifications occur, reducing overhead and improving the overall testing experience.
Jest-haste-map's release frequency peaked in 2016-2018, with multiple versions per month. Activity slowed from 2019-2023 with occasional releases. 2024 saw no releases. In 2025 there were three releases in June, one in July and one in August. The latest version is 30.1.0.
Jest-haste-map downloads fluctuated throughout 2024 and 2025, generally trending upwards. Downloads peaked in July 2025 at over 200 million. September 2025 shows a significant drop, but the data is incomplete as of September 13th. Overall package downloads show healthy adoption.
