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# Description Does some misc changes to `ListStream`: - Moves it into its own module/file separate from `RawStream`. - `ListStream`s now have an associated `Span`. - This required changes to `ListStreamInfo` in `nu-plugin`. Note sure if this is a breaking change for the plugin protocol. - Hides the internals of `ListStream` but also adds a few more methods. - This includes two functions to more easily alter a stream (these take a `ListStream` and return a `ListStream` instead of having to go through the whole `into_pipeline_data(..)` route). - `map`: takes a `FnMut(Value) -> Value` - `modify`: takes a function to modify the inner stream.
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.