merge-json-webpack-plugin

Webpack 5 plugin that merges multiple JSON files into a single output file during the build process. Version 6.2.1 is current, with a stable release cadence. Supports glob patterns for file selection, custom merge functions, optional output minification, and transformation hooks. Differentiates from simple file concatenation by performing deep merge with customizable merge strategy, and integrates directly as a webpack plugin. Requires webpack ^5.0.0 and Node >=12.20.0. Ships TypeScript definitions.