rea/src/reference
Kaoru0822 0ecf3f2438
perf(mcp): keep Playwright and type-only imports off MCP startup (#1691)
* fix(build): emit no runtime imports for type-only bindings

Under verbatimModuleSyntax, an import whose specifiers all carry inline
`type` modifiers compiles to `import {} from "..."`, a side-effect import
that still resolves and evaluates the module. 78 compiled modules carried
one, including `import {} from "playwright-core"` in the browser scenario
session, which loaded Playwright's module graph at MCP startup.

Use top-level `import type` for these bindings and enable oxlint's
typescript/no-import-type-side-effects rule so the pattern cannot return.

Refs #1685

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* perf(mcp): load Playwright when a scenario launches, not at startup

The browser scenario and Electron active providers are constructed before
the stdio server serves, and both bound Playwright's launchers at module
load. Resolve `chromium` and `_electron` from playwright-core when a
capture opens instead, as the web module resolver already does.

MCP startup now resolves 1,312 modules (4,902 resolutions) instead of
1,598 (6,076) before reading the first request, and no longer loads
playwright-core. Provider construction, the tool catalog, and capability
inventory are unchanged.

A boundary test spawns the stdio server, initializes, lists tools, and
asserts playwright-core and isomorphic-git were not resolved; the CLI
probe now exercises the real launch path to prove detection.

Closes #1685

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-10 21:04:05 -07:00
..
ReferenceSourceReader.ts perf(mcp): keep Playwright and type-only imports off MCP startup (#1691) 2026-10-10 21:04:05 -07:00
ReferenceSourceReaderEntries.ts perf(mcp): keep Playwright and type-only imports off MCP startup (#1691) 2026-10-10 21:04:05 -07:00
ReferenceSourceReaderErrors.ts perf(mcp): keep Playwright and type-only imports off MCP startup (#1691) 2026-10-10 21:04:05 -07:00
ReferenceSourceReaderFile.test.ts perf(reference): size read buffers from admitted file lengths 2026-10-11 04:15:26 +08:00
ReferenceSourceReaderFile.ts perf(mcp): keep Playwright and type-only imports off MCP startup (#1691) 2026-10-10 21:04:05 -07:00
ReferenceSourceReaderPaths.ts fix: consolidate boundary ownership and cleanup failure paths (#477) 2026-09-08 10:59:13 +08:00
ReferenceSourceReaderTypes.ts perf(mcp): keep Playwright and type-only imports off MCP startup (#1691) 2026-10-10 21:04:05 -07:00
ReferenceSourceReaderValidate.ts perf(mcp): keep Playwright and type-only imports off MCP startup (#1691) 2026-10-10 21:04:05 -07:00