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0.63 - December 2024

Notable changes

Section titled “Notable changes”

Experimental: Improve Realm, Mutator, and Typekit implementations

Section titled “Experimental: Improve Realm, Mutator, and Typekit implementations”

The compiler strongly binds a Realm and Typekit together, and changes mutators so that new types are cloned within the mutator’s realm. The default Typekit now creates a default typekit realm for the current program, and a Typekit can be easily created to work in a specific Program or Realm as needed.

Enum-driven Visibility

Section titled “Enum-driven Visibility”

A new mechanism for visibility that defines valid visibility values in enums and provides tools for filtering types by visibility. A new LifecycleVisibility enum defines standard protocol-agnostic visibility values for operations that manage the lifecycle (creation, update, deletion) of a resource. More details on visibility enums are available in website documentation

Features

Section titled “Features”

@typespec/compiler

Section titled “@typespec/compiler”

  • #4937 Add mutateSubgraphWithNamespace as a separate API

  • #4837 Allow trailing delimiter in array values, tuple, decorator declaration, scalar initializer, etc.

  • #5149 Experimental: Improve Realm, Mutator, and Typekit implementations.

  • #4825 Adds support for enum-driven visibility in the compiler core.

@typespec/openapi3

Section titled “@typespec/openapi3”
  • #5029 Add support for #deprecated for OpenAPI3Parameter

Bug Fixes

Section titled “Bug Fixes”

@typespec/compiler

Section titled “@typespec/compiler”
  • #5252 Added RegEx validation for @pattern and will throw warning for invalid RegEx string

@typespec/http

Section titled “@typespec/http”
  • #5016 Uri template attributes were not extracted when parameter was explicitly mark with @path or @query as well

@typespec/http-server-csharp

Section titled “@typespec/http-server-csharp”
  • #4308 Process sub-namespaces of a service
  • #4998 Handle void returnType
  • #5000 Handle tuple literals
  • #5001 Skip envelope types withpout properties
  • #5024 Literal type is not properly generated
  • #5124 Skip uninstantiated templates
  • #5125 Process operations outside interfaces
  • Handle nullable types and anonymous typesin all contexts
  • Add server-side numeric constraints for safeInt

@typespec/http-server-javascript

Section titled “@typespec/http-server-javascript”
  • Add an additional check for the presence of a property before performing a bounds check on integer properties constrained to a range.
  • 5185 Add logic to handle invalid identifier names (#5185)

@typespec/versioning

Section titled “@typespec/versioning”
  • #5262 Fixes diagnostics for @typeChangedFrom to properly detect when an incompatible version is referenced inside of a template, union, or tuple.

@typespec/openapi3

Section titled “@typespec/openapi3”
  • #5006 Illegal characters in component keys
  • #5274 Added missing peer dependency “openapi-types”

@typespec/json-schema

Section titled “@typespec/json-schema”
  • #5189 Fixes crash that occurred when a template instantiation’s template argument was a union that references a declaration.