Theia is composed of extensions. An extension is an npm package that exposes any number of DI modules (ContainerModule) that contribute to the creation of the DI container.

An extension is consumed by adding a dependency to the npm-package in the package.json of the application. Extensions can be installed/uninstalled at runtime, which will trigger a recompilation and restart.

Through a DI module, the extension can provide bindings from types to concrete implementations, i.e. provide services and contributions.

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