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https://github.com/vercel-labs/scriptc.git
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Chris Tate
39db8c0a99
- Run production scope and closure capture logic with native TypeScript 7 symbols. - Give lowering caches explicit pass ownership and stable symbol identities. - Support reference collection arrays and optional Set seeds on both native backends.
56 lines
2.1 KiB
TypeScript
56 lines
2.1 KiB
TypeScript
// @transform-types
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function item(value: number): Set<number> { return new Set([value, value + 1]); }
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function values(sets: Set<number>[]): string {
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return sets.map((set) => [...set].join(":")).join(",");
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}
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const first = item(1);
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const second = item(3);
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const third = item(5);
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const sets: Set<number>[] = [first, second];
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sets.push(third);
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console.log(values(sets), sets[0] === first, sets.includes(second));
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console.log(sets.indexOf(first), sets.includes(item(1)));
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first.add(9);
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console.log(values(sets));
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sets[1] = first;
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console.log(values(sets), sets[0] === sets[1], second.size);
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console.log(sets.pop() === third, values(sets));
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sets.unshift(second, third);
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console.log(values(sets), sets.shift() === second);
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const removed = sets.splice(1, 1, second);
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console.log(values(removed), values(sets));
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const copied = sets.slice();
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const spread = [...sets];
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const combined = sets.concat([first]);
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console.log(values(copied), values(spread), values(combined));
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copied[0].add(11);
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console.log(values(sets));
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sets.reverse();
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console.log(values(sets));
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sets.fill(second, 1);
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sets.copyWithin(0, 1);
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console.log(values(sets));
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const made = [10, 20, 30].map((value) => item(value));
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const selected = made.filter((set) => set.has(20));
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console.log(values(made), values(selected), selected[0] === made[1]);
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console.log(made.find((set) => set.has(30)) === made[2]);
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console.log(made.reduce((sum, set) => sum + set.size, 0));
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console.log(values([made, [first]].flat()));
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const expanded = made.flatMap((set) => [set, set]);
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console.log(values(expanded), expanded[0] === expanded[1]);
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console.log(values(Array.from(made)));
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class Key { constructor(public name: string) {} }
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const key = new Key("kept");
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const referenceSets: Set<Key>[] = [new Set<Key>()];
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referenceSets[0].add(key);
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const alias = referenceSets.slice();
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referenceSets[0].clear();
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console.log(alias[0].has(key));
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alias[0].add(key);
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console.log(referenceSets[0].has(key));
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const optional: (Set<number> | undefined)[] = [first, undefined, second];
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for (const set of optional) console.log(set === undefined ? -1 : set.size);
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console.log(optional[0] === first, optional[1] === undefined);
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