RFC: keyof and rawkeyof type operators
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Vighnesh-V
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Jan 12, 2024
# Old Solver: - Fix a bug in the old solver where a user could use the keyword `typeof` as the name of a type alias. - Fix stringification of scientific notation to omit a trailing decimal place when not followed by a digit e.g. `1.e+20` -> `1e+20` # New Solver - Continuing work on the New non-strict mode - Introduce `keyof` and `rawkeyof` type function for acquiring the type of all keys in a table or class (luau-lang/rfcs#16) --- Co-authored-by: Aaron Weiss <aaronweiss@roblox.com> Co-authored-by: Alexander McCord <amccord@roblox.com> Co-authored-by: Andy Friesen <afriesen@roblox.com> Co-authored-by: Aviral Goel <agoel@roblox.com> Co-authored-by: Lily Brown <lbrown@roblox.com> Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com> Co-authored-by: Vighnesh Vijay <vvijay@roblox.com> --------- Co-authored-by: Aaron Weiss <aaronweiss@roblox.com> Co-authored-by: Alexander McCord <amccord@roblox.com> Co-authored-by: Andy Friesen <afriesen@roblox.com> Co-authored-by: Aviral Goel <agoel@roblox.com> Co-authored-by: David Cope <dcope@roblox.com> Co-authored-by: Lily Brown <lbrown@roblox.com> Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com>
andyfriesen
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Jan 16, 2024
vegorov-rbx
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Jan 19, 2024
### What's changed? * Syntax for [read-only and write-only properties](luau-lang/rfcs#15) is now parsed, but is not yet supported in typechecking ### New Type Solver * `keyof` and `rawkeyof` type operators have been updated to match final text of the [RFC](luau-lang/rfcs#16) * Fixed issues with cyclic type families that were generated for mutable loop variables ### Native Code Generation * Fixed inference for number / vector operation that caused an unnecessary VM assist --- ### Internal Contributors Co-authored-by: Aaron Weiss <aaronweiss@roblox.com> Co-authored-by: Andy Friesen <afriesen@roblox.com> Co-authored-by: Lily Brown <lbrown@roblox.com> Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com>
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Related issue: luau-lang/luau#962