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Fixes #15440 # Description Wraps ListStream stream type from `impl Iterator` to `Peekable<impl Iterator>`, this allows checking for empty streams and treating them as empty values Example: ``` # previously $ glob ? | default -e void > # empty list $ echo '' | default -e void > void #################### # now $ glob ? | default -e void > void $ echo '' | default -e void > void ``` # User-Facing Changes empty list streams will behave as `nothing` values when testing for emptiness # Tests + Formatting - Add 2 tests - clippy OK - fmt OK # After Submitting
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.