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# Description The local socket PR introduced a `Waitable` type, which could either hold a value or be waited on until a value is available. Unlike a channel, it would always return that value once set. However, one issue with this design was that there was no way to detect whether a value would ever be written. This splits the writer into a different type `WaitableMut`, so that when it is dropped, waiting threads can fail (because they'll never get a value). # Tests + Formatting A test has been added to `stress_internals` to make sure this fails in the right way. - 🟢 `toolkit fmt` - 🟢 `toolkit clippy` - 🟢 `toolkit test` - 🟢 `toolkit test stdlib`
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.