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Benjamin Taylor
17385a8f6d
`/mastra/generative-ui/a2ui/fixed-schema` published the entire 432-line
tools barrel, because the `backend-render-operations` marker sits at the
top of the file (the marker-hoist sweep in 34b6418 put it there so the
snippet would carry its imports). The published body therefore included
every unrelated tool plus
`import { ... } from "@copilotkit/showcase-shared-tools"` — a tsconfig
path alias to a symlink in this repo, not a package a reader can install.
A Mastra onboarding run stopped there rather than invent an API (OSS-901).
Move `generateA2uiTool` into its own module and mark the region there, so
hoisting to the top of the file yields exactly the tool plus its own
imports — the same shape as the reference cell,
`langgraph-typescript/src/agent/a2ui-fixed.ts`, which likewise builds the
A2UI operations locally instead of importing the showcase's shared tools.
The published snippet goes from 432 lines to 166, and everything in it
either installs from npm or is a visibly local `./` / `@/` module with a
comment saying what a real app would use instead.
`buildA2uiOperations` and `systemPromptFrom` replace the two shared-tools
helpers so mastra keeps a single operation builder: the beautiful-chat
flight tool now calls the same one. The prompt builder lands in the
dependency-free `a2ui-context.ts` so its regression test keeps running
without the Mastra SDK installed.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>