@uniswap/v2-sdk@4.19.2 has @uniswap/sdk-core: "workspace:*" in its dependencies — a monorepo-internal reference that was accidentally published to npm.
This breaks npm/yarn/pnpm install for any project that depends on @uniswap/v2-sdk@^4.x:
Error: @uniswap/sdk-core@workspace:*: Workspace not found
4.19.1 is fine (@uniswap/sdk-core: "^7.12.1"). Only 4.19.2 is affected.
Expected: workspace:* should be resolved to a proper semver range before publishing.