mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-11-02 07:43:42 +08:00
Malte UblandClaude Opus 5.5
605e312e78
A union with a checked-dynamic arm (`unknown`, fetch's AbortSignal) maps to the checked-dynamic value when every other arm is one the checked-dynamic tree holds faithfully. Function arms were excluded, so `Progress | AbortSignal | undefined` was refused (SC2009). The tree boxes a function whose parameters check in and whose result converts out by reference (canBoxFuncIntoDyn), and `typeof x === "function"` narrows it back out to the typed function. Such arms now join the collapse. The corpus program checks calls, identity (`===` against the original), and the other arm's members against Node. pi's SessionManager.listAll takes `onProgressOrSignal?: SessionListProgress | AbortSignal`. The refusal rejected the whole SessionManager class. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
49 lines
1.8 KiB
TypeScript
49 lines
1.8 KiB
TypeScript
// A union of a function type with a value the checked-dynamic tree holds
|
|
// (AbortSignal, `unknown`) rides that representation: the function is held
|
|
// by reference, `typeof x === "function"` narrows it back out, and calls,
|
|
// identity and the other arm's members behave as in Node.
|
|
|
|
type Progress = (loaded: number, total: number) => void;
|
|
|
|
function listAll(
|
|
dirOrProgress?: string | Progress,
|
|
progressOrSignal?: Progress | AbortSignal,
|
|
signal?: AbortSignal,
|
|
): string {
|
|
const dir = typeof dirOrProgress === "string" ? dirOrProgress : "/default";
|
|
const progress =
|
|
typeof dirOrProgress === "function"
|
|
? dirOrProgress
|
|
: typeof progressOrSignal === "function"
|
|
? progressOrSignal
|
|
: undefined;
|
|
const abortSignal =
|
|
typeof dirOrProgress === "string" || typeof progressOrSignal === "function"
|
|
? signal
|
|
: (progressOrSignal ?? signal);
|
|
progress?.(1, 3);
|
|
progress?.(3, 3);
|
|
return `${dir} aborted=${abortSignal?.aborted ?? "none"}`;
|
|
}
|
|
|
|
const seen: string[] = [];
|
|
const report: Progress = (loaded, total) => seen.push(`${loaded}/${total}`);
|
|
const controller = new AbortController();
|
|
console.log(listAll());
|
|
console.log(listAll("/x", report));
|
|
console.log(listAll(report, controller.signal));
|
|
controller.abort();
|
|
console.log(listAll("/y", undefined, controller.signal));
|
|
console.log(listAll(report, controller.signal), seen.join(" "));
|
|
|
|
function same(handler: Progress | AbortSignal | undefined): boolean {
|
|
return handler === report;
|
|
}
|
|
console.log(same(report), same(controller.signal), same(undefined), same((a, b) => void (a + b)));
|
|
|
|
function describe(value: unknown | ((n: number) => string)): string {
|
|
if (typeof value === "function") return `function -> ${(value as (n: number) => string)(7)}`;
|
|
return `value ${JSON.stringify(value)}`;
|
|
}
|
|
console.log(describe((n: number) => `n=${n}`), describe({ a: 1 }), describe("s"));
|