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# Description A new command to simplify assertions for `false`. The name is just a draft, though I could not come up with a better name. I have rejected `assert false`, because I would have to rename `assert` to `assert true` which would break the compatibility and worsen the shell experience of the good old `assert`. Another idea I have rejected was something like `assert_false` to keep it consistent with the naming convention of our stdlib. I am open to suggestions :) # User-Facing Changes Just a new command # Tests + Formatting - [x] Done # After Submitting <!-- If your PR had any user-facing changes, update [the documentation](https://github.com/nushell/nushell.github.io) after the PR is merged, if necessary. This will help us keep the docs up to date. -->
Nushell core libraries and plugins
These sub-crates form both the foundation for Nu and a set of plugins which extend Nu with additional functionality.
Foundational libraries are split into two kinds of crates:
- Core crates - those crates that work together to build the Nushell language engine
- Support crates - a set of crates that support the engine with additional features like JSON support, ANSI support, and more.
Plugins are likewise also split into two types:
- Core plugins - plugins that provide part of the default experience of Nu, including access to the system properties, processes, and web-connectivity features.
- Extra plugins - these plugins run a wide range of different capabilities like working with different file types, charting, viewing binary data, and more.