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Make KnownCaipNamespacedChainId generic over Namespace type parameter #262

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Merged
MajorLift merged 3 commits into from
Aug 28, 2025
Merged

Make KnownCaipNamespacedChainId generic over Namespace type parameter #262

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90b1532
Make `KnownCaipNamespacedChainId` generic over `Namespace` type param
MajorLift Aug 28, 2025
d7bf44a
Add jsdoc `@template` entry
MajorLift Aug 28, 2025
65c5896
Add changelog entry
MajorLift Aug 28, 2025
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4 changes: 4 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0

## [Unreleased]

### Changed

- Make `KnownCaipNamespacedChainId` type generic over `Namespace` type parameter ([#262](https://github.com/MetaMask/utils/pull/262))

## [11.5.0]

### Added
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6 changes: 5 additions & 1 deletion src/caip-types.ts
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Expand Up @@ -148,8 +148,12 @@ export enum KnownCaipNamespace {
*
* This is a narrower, more type-safe alternative to {@link CaipChainId} for use cases
* where the chain namespace must be one of the known standards.
*
* @template Namespace - The namespace of the CAIP-2 chain ID. Must be a known namespace specified in {@link KnownCaipNamespace}.
*/
export type KnownCaipNamespacedChainId = `${KnownCaipNamespace}:${string}`;
export type KnownCaipNamespacedChainId<
Namespace extends `${KnownCaipNamespace}` = `${KnownCaipNamespace}`,
> = `${Namespace}:${string}`;

/**
* Check if the given value is a {@link CaipChainId}.
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