mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-10-28 06:53:42 +08:00
Chris Tate
29f21ffeca
The util.format %f branch for boolean and unit arguments discarded the lowered value and lowered the argument node again as a statement, so anything lowering builds for the argument (lifted array helpers, closures) was built twice, one copy dead. It now evaluates the value it already lowered as a statement, and drops it when evaluating it has no observable effect. The same branch now also covers void calls and null | undefined unions, which Node formats as NaN like undefined and null; they were refused.
29 lines
1.3 KiB
TypeScript
29 lines
1.3 KiB
TypeScript
// util.format and console.log %f: parseFloat(String(arg)) formatted, for
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// numbers (-0 prints 0), strings, booleans, unit values and checked-dynamic values.
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// Boolean and unit arguments still evaluate once, for their effects.
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import { format } from "node:util";
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const n: number = Number(process.argv.length > 99 ? "1" : "-0");
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const s: string = process.argv[2] ?? "3.5kg";
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const flag = process.argv.length > 99;
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const u: unknown = JSON.parse('{"a":1}');
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const v: unknown = JSON.parse('"2.5e1x"');
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console.log(format("%f|%f|%f|%f|%f|%f", 1.5, n, -0, s, "abc", flag));
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console.log(format("%f %f %f %f", Infinity, NaN, undefined, null));
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console.log(format("%f %f", u, v));
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console.log(format("%s:%d:%i:%f:%j:%O %%", "a", 1.5, 2.7, "3.5", { a: 1 }, [1]));
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console.log(format("%f", 1, "extra"), format("%f"));
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console.log("%f and %f", "1.25e2px", 0.1 + 0.2);
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let calls = 0;
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const hit = (): boolean => ++calls > 0;
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const touch = (): undefined => {
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calls += 10;
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return undefined;
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};
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function log(): void {
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calls += 100;
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}
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let un: undefined;
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const nu: null | undefined = process.argv.length > 99 ? null : undefined;
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console.log(format("%f|%f|%f|%f|%f", hit(), touch(), log(), un, nu), calls);
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console.log(format("%f %f", [1, 2].some((x) => x > 1), [1].includes(1) && hit()), calls);
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