Explanation

Addressing https://github.com/MetaMask/MetaMask-planning/issues/4017

We want to create a merger for the Caip25Permission specification in order to enable wallet_addEthereumChain and wallet_switchEthereumChain to call to the PermissionController rather than the ApprovalController for incremental permission requests (i.e. for the permittedChains flow).

References

Extension: MetaMask/metamask-extension#30042

Changelog

@metamask/multichain-api

• BREAKING: Renamed mergeScopes to mergeNormalizedScopes
• ADDED: Added merger to CaveatSpecification returned by caip25CaveatBuilder()
• ADDED: Added mergeInternalScopes which merges two InternalScopesObjects

Checklist

• I've updated the test suite for new or updated code as appropriate
• I've updated documentation (JSDoc, Markdown, etc.) for new or updated code as appropriate
• I've highlighted breaking changes using the "BREAKING" category above as appropriate
• I've prepared draft pull requests for clients and consumer packages to resolve any breaking changes