feat: intersection types #2325
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feat: intersection types #2325
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This adds support for intersection types to the jsii compiler. There are a number of restrictions to the use of intersection types: - They can only appear in argument position, or in structs that are exclusively used as the input to functions. - Not as return values of functions - Not in structs that are returned by functions - Not as arguments to constructors - Not as property types - They must intersect only (behavioral) interface types. - Not structs - Not primitives - Not class types - All shared members of interfaces that are intersected must have the same types and arguments as each other.
mrgrain reviewed Sep 11, 2025
mrgrain reviewed Sep 11, 2025
mrgrain reviewed Sep 11, 2025
mrgrain reviewed Sep 11, 2025
mrgrain approved these changes Sep 25, 2025
Signed-off-by: github-actions <github-actions@github.com>
mergify bot pushed a commit to aws/jsii that referenced this pull request Sep 29, 2025
Add support for intersection types to the rest of the jsii toolkit. This is currently using a prerelease version of the jsii compiler drafted here: aws/jsii-compiler#2325 --- By submitting this pull request, I confirm that my contribution is made under the terms of the [Apache 2.0 license]. [Apache 2.0 license]: https://www.apache.org/licenses/LICENSE-2.0
aws-cdk-automation pushed a commit that referenced this pull request Oct 29, 2025
This adds support for intersection types to the jsii compiler. There are a number of restrictions to the use of intersection types: - They can only appear in argument position, or in structs that are exclusively used as the input to functions. - Not as return values of functions - Not in structs that are returned by functions - Not as arguments to constructors - Not as property types - They must intersect only (behavioral) interface types. - Not structs - Not primitives - Not class types - All shared members of interfaces that are intersected must have the same types and arguments as each other. --- By submitting this pull request, I confirm that my contribution is made under the terms of the [Apache 2.0 license]. [Apache 2.0 license]: https://www.apache.org/licenses/LICENSE-2.0 --------- Signed-off-by: github-actions <github-actions@github.com> Co-authored-by: github-actions <github-actions@github.com> (cherry picked from commit 4ea0b82) # Conflicts: # package.json # yarn.lock
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💚 All backports created successfully
Questions ?Please refer to the Backport tool documentation and see the Github Action logs for details |
github-merge-queue bot pushed a commit that referenced this pull request Oct 29, 2025
# Backport This will backport the following commits from `main` to `maintenance/v5.8`: - [feat: intersection types (#2325)](#2325) <!--- Backport version: 9.5.1 --> ### Questions ? Please refer to the [Backport tool documentation](https://github.com/sorenlouv/backport) --------- Co-authored-by: Rico Hermans <rix0rrr@gmail.com> Co-authored-by: Momo Kornher <kornherm@amazon.co.uk>
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This adds support for intersection types to the jsii compiler.
There are a number of restrictions to the use of intersection types:
By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.