mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-10-25 06:24:27 +08:00
Chris Tate
b40a6f6079
- Keep generic bindings and short-circuit writes scoped to their native execution context. - Compile Map and Set copies, tuple callbacks and searches, and string-pattern replacement. - Exercise production frontend registries without Node and preserve mutation, identity, and evaluation order.
45 lines
1.4 KiB
TypeScript
45 lines
1.4 KiB
TypeScript
export {};
|
|
|
|
const a = { name: "a" };
|
|
const b = { name: "b" };
|
|
const original = new Set([a, b]);
|
|
const copy = new Set(original);
|
|
console.log(copy !== original, copy.has(a), copy.has(b), copy.size);
|
|
original.delete(a);
|
|
copy.add(a);
|
|
console.log(original.has(a), copy.has(a));
|
|
for (const value of copy) console.log(value.name);
|
|
|
|
const strings = new Set(["a", "b", "c"]);
|
|
strings.delete("b");
|
|
strings.add("b");
|
|
console.log([...new Set(strings)].join(","));
|
|
|
|
let calls = 0;
|
|
function source(): Set<string> { calls++; return strings; }
|
|
const evaluated = new Set(source());
|
|
console.log(evaluated.size, calls);
|
|
strings.clear();
|
|
console.log(evaluated.size, strings.size);
|
|
|
|
function fresh<T extends Iterable<string>>(values: T): Set<string> {
|
|
return new Set(values);
|
|
}
|
|
console.log([...fresh(["one", "two", "one"])].join(","));
|
|
console.log([...fresh(new Set(["three", "four"]))].join(","));
|
|
|
|
function cache(value: Set<string> | undefined): Set<string> { return value ?? new Set(); }
|
|
const cached = new Set(["cached"]);
|
|
console.log(cache(cached) === cached, cache(undefined).size);
|
|
let lazy: Set<string> | undefined;
|
|
lazy ??= new Set();
|
|
lazy.add("lazy");
|
|
console.log(lazy.has("lazy"));
|
|
|
|
// Map entries copy their containers while sharing stored Set identities.
|
|
const nested = new Map([["values", cached]]);
|
|
const copied = new Map(nested);
|
|
copied.get("values")!.add("shared");
|
|
console.log(nested.get("values") === cached, cached.has("shared"));
|
|
console.log([...copied][0]![1] === cached);
|