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Chris Tate
816c664058
events.once(emitter, name) was refused. The emitter dispatches statically emitted events to typed listeners through invokers built per argument tuple, so the lowering takes the event's tuple from the program-wide event table and builds a capture-free function that boxes that tuple into the any[] Node fulfills with, and one for the 'error' tuple. scr_events_once registers both as one-shot typed listeners behind emitted adapters (emitterOnceAdapter). The first to fire settles the promise (fulfilled with the arguments, or rejected with the error) and removes the other, as in Node; awaiting 'error' itself registers only the one listener. The shared state holds the emitter and the listener closures weakly, so a never-fired once creates no cycle. Options, computed or meta event names, EventTarget and stream receivers, and events emitted with computed names or checked-dynamic listeners stay refused. The fallback declarations type the result Promise<unknown[]>; under @types/node (Promise<any[]>) TypeScript code narrows it to unknown[].
node-types fixture
A project whose node_modules contains @types/node — the adoption path for real-world Node/TypeScript projects. The vendored node_modules are COMMITTED TEST DATA, pinned so the type surface (and therefore the pinned diagnostics) never drifts with the registry:
@types/node24.13.3undici-types7.18.2 (its dependency — declares the web-platform globals: fetch/Response/AbortSignal/ReadableStream/...)
What the fixture pins (see tests/harness/project-config.test.ts):
argv-env.ts— the SUPPORTED process surface (argv, env) typed by @types/node lowers statically and the binary runs: with @types/node present, the shipped fallback declarations forprocess/node:fs/consolestand down (their types come from @types/node), but the same members lower to the same libCalls, recognized by name + @types/node provenance.fenced.ts— surface @types/node DECLARES but scriptc does not lower (process.uptime, Buffer.from, setInterval) reports the SC2020-family fence naming @types/node, instead of typechecking its way into a broken binary — and never a raw "Cannot find name" error.source-import/— an imported TypeScript source may use theRequestInfoglobal supplied by TypeScript's default DOM lib while scriptc adopts the project's @types/node declarations.
Projects WITHOUT @types/node (every other fixture and the whole corpus) keep the shipped fallback declarations and behave exactly as before.