feat: ship Backstage template + @plinth-dev/scaffolder-actions#1
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Mirrors plinth-dev/cli's `plinth new` flow inside a Backstage portal so both surfaces produce the same output for the same inputs. - packages/scaffolder-actions: pnpm workspace, tsup ESM build, vitest. Pure functions (scaffold/applyReplacements/fetchAndExtract/forApi/ forWeb) are TS ports of the CLI's Go logic — order-sensitive replacement (full Go module path before bare service-name token); skips node_modules, .git, lockfiles, and binary content; tarball fetch via GitHub's codeload tar.gz endpoint with single-component prefix strip via `tar` package's `strip: 1`. - createPlinthScaffoldAction wraps scaffold() in a Backstage TemplateAction with a JSON-schema input/output contract. No zod runtime dep — schema is plain JSON Schema. - template.yaml at repo root drives the action with form params for name/tiers/module path/ref, registered in a Backstage catalog via the standard URL-location pattern. - 14 vitest tests covering rewrite (api + web fixtures, idempotency, binary skip, empty replacements), fetch+extract (httptest fixture via node:http + tar.create + zlib + 404 + injected fetch), and the scaffold orchestrator (both tiers, web-only, name validation, workspace-must-be-absolute, must-pick-at-least-one tier, default ref behaviour). - CI: Node 22 + pnpm 10 — install/lint/typecheck/test/build green. Roadmap deferred: golden-tree CI parity test against the CLI's output and npm publish of @plinth-dev/scaffolder-actions. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Summary
Mirrors
plinth-dev/cli'splinth newflow inside a Backstage portal. Same inputs → same output, regardless of which surface the user enters from.packages/scaffolder-actions/—@plinth-dev/scaffolder-actionsnpm package. Pure-function core (scaffold,applyReplacements,fetchAndExtract,forApi,forWeb) is a TS port of the CLI's Go logic.createPlinthScaffoldAction()wraps it as a Backstage `TemplateAction` with JSON-schema input/output (no zod runtime dep).template.yaml— Backstage software template at repo root. Form parameters: name, web/api toggles, Go module path, starter ref. Registered into a Backstage catalog via the standard URL-location pattern.Implementation notes
Tests
14 vitest tests:
Roadmap deferred
Test plan
🤖 Generated with Claude Code