microsoft/typespec

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Stars: 5.9k
Forks: 394
Open beginner issues: 0
Indexed issues: 1k
Avg merge: 1d 23h
Merged PRs (30d): 104

Dominant language: Java
License: MIT
Last GitHub push: Sep 16, 2026
Latest indexed: Sep 17, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: good first issue

Open All

1005 open issues indexed

Expression forms for declarations Open

compiler:core design:needed triaged:core

microsoft/typespec#189 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Separate Model and Interface Templates from the instantianted lists Open

microsoft/typespec#223 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Playground: Support diff view for versioned specs Open

ui:playground

microsoft/typespec#325 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 17, 2026
Suggestion: Enforce declaring method return types Open

microsoft/typespec#333 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Nullable response have a weird behavior right now Open

design:needed

microsoft/typespec#356 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Support for `model Foo<T> extends/is T` Open

design:needed

microsoft/typespec#423 · 2 comments · 1 reaction · 1 assignee · Indexed Sep 17, 2026
Review inlining and naming choices in OpenAPI Open

design:needed

microsoft/typespec#464 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Decorators with named parameters? Open

design:needed

microsoft/typespec#513 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Calling functions in template instantiations Open

design:needed

microsoft/typespec#521 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
(Re)load decorators and functions directly from TypeScript Open

microsoft/typespec#533 · 7 comments · 2 reactions · 0 assignees · Indexed Sep 17, 2026
Apply decorator to a block of models? Open

design:needed

microsoft/typespec#568 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
[Template Parameter Constraints] Custom validation Open

design:needed

microsoft/typespec#602 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Implement communication layer between cadl emitter and language specific process Open

microsoft/typespec#616 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Move resource abstraction to `@cadl-lang/resource` (aka resource reform) Open

microsoft/typespec#638 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
[Dt] Support for source mapping Open

design:needed epic

microsoft/typespec#696 · 4 comments · 3 reactions · 0 assignees · Indexed Sep 17, 2026
Bundle default fallback compiler with vscode extension Open

ide

microsoft/typespec#710 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Support operation links in OpenAPI3 generator Open

microsoft/typespec#713 · 1 comment · 2 reactions · 0 assignees · Indexed Sep 17, 2026
Invalid OA3 for unions Open

microsoft/typespec#826 · 19 comments · 3 reactions · 0 assignees · Indexed Sep 17, 2026
Feedback on decorator collapsing Open

ide

microsoft/typespec#860 · 11 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
ability to convert high-level Cadl spec into a common level such as Http Open

design:needed

microsoft/typespec#880 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Improve language server file system cache Open

ide

microsoft/typespec#894 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Add model constraints Open

design:needed

microsoft/typespec#961 · 7 comments · 2 reactions · 0 assignees · Indexed Sep 17, 2026
Feature proposal: Selector language Open

compiler:core design:needed

microsoft/typespec#1023 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Mechanism to catch FIXMEs in generated code Open

design:needed

microsoft/typespec#1080 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
[IDE] Workspace Symbols Open

microsoft/typespec#1094 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
The scopes property of the OAuth2Flow models should be a map of string to string Open

design:needed

microsoft/typespec#1113 · 5 comments · 3 reactions · 0 assignees · Indexed Sep 17, 2026
Consider moving eliding of properties of type `never` lower Open

design:needed

microsoft/typespec#1128 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Invalidating sourceProperty on property mutation Open

design:needed

microsoft/typespec#1129 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Would be good to have a way to specify union of models for operation parameters Open

design:needed

microsoft/typespec#1140 · 4 comments · 1 reaction · 0 assignees · Indexed Sep 17, 2026
Accessing member of instantiated template does not work. Doing so through an alias does work. Open

microsoft/typespec#1163 · 9 comments · 0 reactions · 1 assignee · Indexed Sep 17, 2026
[Metadata] Visibility shorthand Open

design:needed

microsoft/typespec#1175 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Allow importing types from a service Open

design:needed

microsoft/typespec#1179 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Remove the `@indexer` decorator Open

design:needed

microsoft/typespec#1194 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Numeric range literal Open

design:needed

microsoft/typespec#1205 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Add library linter to require jsDoc comments on exported functions Open

microsoft/typespec#1228 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Designate an int enum as "Flags" Open

design:needed

microsoft/typespec#1237 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Disallow backslash (windows path) in cadl config Open

microsoft/typespec#1261 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
OpenAPI emitters should not emit "Accept" header value as a parameter Open

microsoft/typespec#1278 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Referencing property of template parameter that extends something that has said property fails Open

microsoft/typespec#1280 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Add "combine" or "merge" operator for models Open

design:needed feature

microsoft/typespec#1292 · 10 comments · 2 reactions · 0 assignees · Indexed Sep 17, 2026
Emitter options as TypeSpec Open

compiler:core design:needed triaged:core

microsoft/typespec#1297 · 0 comments · 2 reactions · 0 assignees · Indexed Sep 17, 2026
Check parse results in parser tests Open

microsoft/typespec#1314 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Consider organizing types.ts into #regions Open

microsoft/typespec#1316 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Format devdoc comments nicely in formatter Open

compiler:core

microsoft/typespec#1319 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Document bad mutation/cloning patterns for library/emitter authors Open

microsoft/typespec#1336 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
A way to specify a decorator usage Open

design:needed

microsoft/typespec#1351 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Add `{@link ...}` support to developer docs Open

microsoft/typespec#1358 · 2 comments · 1 reaction · 0 assignees · Indexed Sep 17, 2026
Implement allowing service metadata to be declared on interface Open

microsoft/typespec#1398 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
OpenAPI emitter doc should describe how it handles REST library constructs Open

docs

microsoft/typespec#1416 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Auto complete for diagnostic suppression Open

feature ide

microsoft/typespec#1422 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026

microsoft/typespec

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