Create Eval Plan

Produce a valid .tsupgrader/runtime-validation/eval-plan.json for the project and save it to disk. For webapps, also record one or more supporting Playwright .spec.ts files that the plan references.

Workflow

Step 1 — Create or refresh

If <packageDirectory>/.tsupgrader/runtime-validation/eval-plan.json does not exist, create one from scratch. If it does exist, read its projectType and current assertions, then update only the parts that no longer apply.

Step 2 — Detect the project type

Read package.json, the README, and the source tree. Pick the closest match:

• electron in dependencies → electron.
• A bin field in package.json, or scripts pointing at a CLI entry such as bin/<name>.js → cli.
• react-dom, vue, svelte, solid-js, @angular/platform-browser, next, or a dev-server script (dev / start / serve) that boots Vite / webpack-dev-server / Next / Angular CLI → webapp.
• express, fastify, koa, hapi, @nestjs/core, apollo-server, graphql-yoga, or source that calls .listen(<port>) → server.
• Otherwise (only consumed via import, no executable entry) → library.
• Special: VS Code / Babel / Webpack plugins use plugin. Build systems like Nx / Lerna use framework. Use other only as a last resort.

Step 3 — (Webapps only) record Playwright flows first

If projectType is webapp, the plan will reference one or more Playwright .spec.ts files. Follow recording.md end-to-end before authoring the plan.

Step 4 — Pick the per-type template

Read per-project-type.md, copy the template for your project's type, and adapt commands, paths, and URLs. For server projects, follow the endpoint-discovery procedure in that file — do not invent routes.

Step 5 — Add the tests-pass assertion

Read tests-assertion.md and append the tests-pass assertion. If the project has no test script, follow the generation flow in that file before emitting the assertion.

Step 6 — Apply schema and output-contains rules

• Confirm the plan matches the schema: plan-schema.md.
• For every output-contains assertion, confirm the substring is stable: output-contains.md.

Step 7 — Save

Write the JSON to <packageDirectory>/.tsupgrader/runtime-validation/eval-plan.json. Use 2-space indentation. Assertion names must be unique within the file.

Step 8 — Hand control back

Report what you did in one or two sentences. If you were invoked by another skill, that skill resumes from where it left off. If the user invoked you directly, tell them the plan is saved.

Do not invoke typescript_validate_runtime yourself — that's the calling workflow's job.

Key principles

• Author for replay. Every assertion must be deterministic across runs. Avoid time-of-day output, random ports, or commands whose output drifts.
• One assertion = one concern. Don't pack multiple checks into a single command.
• Prefer exit-code over output-contains when possible. Exit codes are unambiguous; output strings are fragile.