A full version history of the prop-types package with size, number of distributed files and dependency evolution.
## Prop-types Versions: A History of React's Runtime Type Checking
The prop-types package, essential for runtime type checking in React applications, has evolved significantly since its inception. Early versions, like 0.1.0 and 0.2.0 released in 2015 and 2016 respectively, were authored by Aaron Ackerman and marked the initial extraction of PropTypes validation from React itself. Facebook then took ownership of the project. These early versions relied on tools like Babel and Webpack for development and bundling.
The 15.x.x series, starting with 15.5.0 in April 2017, represents a period of rapid development and refinement post FB adoption. These versions, up to 15.8.1, saw the introduction of dependencies like fbjs and react-is, along with a suite of development tools including Jest for testing and UglifyJS for minification. The license also transitioned to MIT. This era demonstrates a commitment to stability and improved developer experience, evidenced by the frequent patch releases addressing bugs and incorporating minor enhancements. Core improvements such as loose-envify and react-is were also added as dependencies.
Later versions saw a continuous focus on optimization and compatibility with evolving React versions; 15.8.0 in late 2021 and 15.8.1 in early 2022, represent some of the last changes and incremental improvements to support the latest React features. The package remains a cornerstone for ensuring data integrity within React components.