mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-10-18 05:19:29 +08:00
Chris Tate
94fd361b54
Represent ordinary JavaScript arrays with hole, value, and explicit-undefined states; add sparse side storage and carry missing values through the frontend, native backends, runtime, and Node-facing consumers.
28 lines
518 B
TypeScript
28 lines
518 B
TypeScript
let discriminantCalls = 0;
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function discriminant(): string | undefined {
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discriminantCalls++;
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return ["b"][0];
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}
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switch (discriminant()) {
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case "a":
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console.log("a");
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break;
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case "b":
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console.log("b");
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break;
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default:
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console.log("default");
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}
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console.log("discriminant calls", discriminantCalls);
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function thrown(value: string): string {
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switch ([value][0]) {
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case "x": {
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throw new Error("x");
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}
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default:
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return "ok";
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}
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}
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console.log("switch", thrown("y"));
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