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>
18 lines
981 B
TypeScript
18 lines
981 B
TypeScript
// The fences around utility-type record shapes. Utility types over data
|
|
// shapes compile (Partial/Record/Pick/Omit/Readonly resolve to ordinary
|
|
// record shapes — differential corpus), and STRING and NUMBER index
|
|
// signatures over supported value types compile as hybrid shapes (declared
|
|
// fields + an overflow map; number keys canonicalize to their JS string
|
|
// spelling; function/Map/Set/nested-record values ride the same store —
|
|
// differential corpus); what stays rejected:
|
|
// - symbol-keyed index signatures (no lowering for symbol keys).
|
|
// (Readonly<Date> bindings compile, holding the Date as a checked value.
|
|
// Dot access/writes to index-signature keys compile now — the overflow
|
|
// path in dot spelling — and self-referential mapped types intern as
|
|
// named recursive shapes; differential corpus covers both.)
|
|
const bySymbol: { [s: symbol]: string } = {};
|
|
console.log(bySymbol);
|
|
|
|
const stamped: Readonly<Date> = new Date(0);
|
|
console.log(stamped.getTime());
|