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Chris TateandHagege Ruben
c9cad7a0ba
- add cross-platform shell spawning and close lifecycle support - decode encoded child output across native read boundaries - cover the supported surface with differential compatibility evidence Fixes #370 Co-authored-by: Hagege Ruben <20857346+HagegeR@users.noreply.github.com>
35 lines
1.6 KiB
TypeScript
35 lines
1.6 KiB
TypeScript
// child_process support boundaries: what stays rejected at LOWERING with
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// specific messages. The fallback declarations type the supported surface
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// exactly, so most misuse is a type error before lowering; these are the
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// forms that TYPECHECK and fence per site.
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import { execFile, spawn } from "node:child_process";
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// The default and explicit "pipe" forms use piped streams.
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// Keep both adjacent to the remaining rejection cases.
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const noOpts = spawn("/bin/echo");
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// "inherit" and "ignore" remain process-only forms without child streams.
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// All four supported modes must coexist with the fences below.
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const piped = spawn("/bin/echo", [], { stdio: "pipe" });
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const inherited = spawn("/bin/echo", [], { stdio: "inherit" });
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// A variable options value must fence instead of being dropped.
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const options: { stdio: "ignore"; detached: boolean } = { stdio: "ignore", detached: true };
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spawn("true", [], options);
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spawn("printf", ["unsafe"], { stdio: "ignore", shell: true });
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const c = spawn("true", [], { stdio: "ignore" });
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// `() => 5` IS assignable to a void-returning listener slot and now ADOPTS
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// the slot's void (JS ignores the value); an ANNOTATED value-returning
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// listener keeps its word and stays fenced — the registry calls listeners
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// as void.
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c.on("exit", (): number => 5);
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// Methods have no bound-value form — call on directly.
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const f = c.on;
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// The callback slice is deliberately narrower than Node's complete
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// options/optional-callback overload family.
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execFile("true");
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execFile("true", [], { encoding: "utf8" }, () => {});
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// Keep each fence on its own statement so diagnostics remain site-specific.
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