mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-10-28 06:53:42 +08:00
Chris Tate
8d94e5d993
A Date field reads through the class's checked-dynamic property view and
writes its toJSON text, so json-class-fields.ts compiled and matched Node
while the diagnostics test expected a refusal. The Date cases move to
6000-json-stringify-class-instances.ts.
RegExp and Promise fields read through the view but the runtime JSON
traversal has no writer for them: a RegExp field threw at run time where
Node writes {}, and a Promise field failed to link. Both are now refused
at compile time naming the field, also inside a field's arrays, records
and unions, and the fixture covers them.
144 lines
3.0 KiB
TypeScript
144 lines
3.0 KiB
TypeScript
class Point {
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x: number;
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y: number;
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constructor(x: number, y: number) {
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this.x = x;
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this.y = y;
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}
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norm(): number {
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return Math.hypot(this.x, this.y);
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}
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}
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class Account {
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static count = 0;
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#secret = "hidden";
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private balance = 10;
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protected owner = "ada";
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label: string | undefined = undefined;
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tags: string[] = ["a", "b"];
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get secret(): string {
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return this.#secret;
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}
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}
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class Stamp {
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at = 5;
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toJSON(key: string): string {
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return `stamp(${key})`;
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}
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}
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class Base {
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kind = "base";
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toJSON(): { kind: string; via: string } {
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return { kind: this.kind, via: "Base.toJSON" };
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}
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}
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class Child extends Base {
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extra = 1;
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}
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class Labeled extends Point {
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name = "p";
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}
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class Box<T> {
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value: T;
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constructor(value: T) {
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this.value = value;
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}
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}
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class Registry {
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entries = new Map<string, number>([["a", 1]]);
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count = 2;
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}
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class Cycle {
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name = "loop";
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next: Cycle | null = null;
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}
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class Big {
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n = 10n;
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}
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const tag = Symbol("tag");
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class Handlers {
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name = "h";
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onEvent = (n: number): number => n + 1;
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payload: unknown = { a: [1, "two", null] };
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[tag] = "symbol-keyed";
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}
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class Failure extends Error {
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code = "E_FAIL";
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}
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class Empty {}
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class Tagged {
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s = new Set<number>([1, 2]);
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count = 2;
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}
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const p = new Point(3, 4);
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console.log(JSON.stringify(p));
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console.log(JSON.stringify(new Account()));
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console.log(JSON.stringify(new Stamp()));
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console.log(JSON.stringify({ first: new Stamp(), list: [new Stamp()] }));
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console.log(JSON.stringify(new Child()));
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console.log(JSON.stringify(new Labeled(1, 2)));
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console.log(JSON.stringify(new Box("text")), JSON.stringify(new Box(new Point(0, 1))));
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console.log(JSON.stringify(new Registry()));
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console.log(JSON.stringify([p, null, new Point(5, 6)]));
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console.log(JSON.stringify({ point: p, points: [p, p] }, null, 2));
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console.log(JSON.stringify(p, null, "--"));
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console.log(JSON.stringify(p, ["x"]));
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console.log(JSON.stringify(p, (key: string, value: unknown) => (key === "y" ? undefined : value)));
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const maybe: Point | null = Math.random() < 2 ? p : null;
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console.log(JSON.stringify(maybe));
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const loop = new Cycle();
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loop.next = loop;
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try {
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JSON.stringify(loop);
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console.log("no error");
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} catch (e) {
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console.log(e instanceof TypeError);
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}
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try {
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JSON.stringify(new Big());
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console.log("no error");
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} catch (e) {
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console.log(e instanceof TypeError);
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}
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p.x = 30;
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console.log(JSON.stringify(p));
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const h = new Handlers();
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console.log(JSON.stringify(h));
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console.log(JSON.stringify(new Empty()));
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console.log(JSON.stringify(new Failure("boom")));
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h.payload = 7;
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console.log(JSON.stringify({ handlers: [h] }));
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const u: unknown = new Map([["a", 1]]);
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console.log(JSON.stringify(new Tagged()), JSON.stringify(u));
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// Date fields write their toJSON text, also in nested instances.
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class Schedule {
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name = "weekly";
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next = new Date(Date.UTC(2024, 0, 1));
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}
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class Calendar {
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title = "team";
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schedules: Schedule[] = [new Schedule()];
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}
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console.log(JSON.stringify(new Schedule()));
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console.log(JSON.stringify({ calendar: new Calendar() }));
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