mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-11-01 07:33:12 +08:00
Chris Tate
8d5b3377aa
A Date is a refcounted object holding its time value, shared with the checked-dynamic Date handle, so it keeps its identity through unknown. Dates compile in arrays (includes, indexOf, lastIndexOf, join, default sort by toString() text), in Date | undefined and Date | null slots, as Map and Set keys and values, in index signatures, and in records, tuples, class fields, closures, promises and generators. === compares identity, relational operators compare time values, new Date(date) makes a new Date, and JSON.stringify writes toJSON(). Closes #225 Co-authored-by: Max B <max@tfq.at>
47 lines
1.5 KiB
TypeScript
47 lines
1.5 KiB
TypeScript
// SC2009: supported shapes over a component type outside its slot — the
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// container is not the blocker, and each message names the component.
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// Boolean Map keys remain outside the supported key domain.
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const byFlag = new Map<boolean, string>();
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console.log(byFlag);
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// Map values have no slot for URLSearchParams.
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const queries = new Map<string, URLSearchParams>();
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console.log(queries);
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// Boolean Set elements remain outside the supported element domain.
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const flags = new Set<boolean>();
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console.log(flags);
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// Arrays hold Map elements; retain the accepted adjacent form.
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const rows: Map<string, number>[] = [];
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console.log(rows);
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// Nullable Maps compile and remain as working context.
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function report(maybe: Map<string, number> | undefined): number {
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return maybe === undefined ? 0 : maybe.size;
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}
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console.log(report(undefined));
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// Typed rest values now compile; retained here as working context for the
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// component-type failures below.
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const sum = (...xs: number[]): number => xs.length;
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const storedSum = sum;
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console.log(storedSum(1, 2));
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// A function's return type carries the failure. The value arrives through
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// a cast, not an ambient declare (a declare-rooted chain would compile to
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// Node's ReferenceError at the root instead).
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const makeWeak = (0 as unknown) as () => WeakRef<object>;
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const storedMake = makeWeak;
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console.log(storedMake());
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// A record member's type carries the failure.
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interface Holder {
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label: string;
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cache: WeakRef<object>;
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}
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const held = (0 as unknown) as Holder;
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const kept = held;
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console.log(kept.label);
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