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Malte UblandClaude Opus 5.5
1090c05dfe
chalk's callable builder (a function whose prototype chain is set with
Object.setPrototypeOf, with style getters from Object.defineProperties)
already ran on the checked-dynamic model. What failed was the code
around it. Each fix is general and sits on a path that used to end in a
refusal or a runtime fence, or is confined to JavaScript files:
- package.json "imports" inside a --npm-static package resolve to the
shipped JS with the "node" condition hoisted, like the tsgo fs shadow;
- JavaScript object literals that the file reshapes at run time (keyed
writes with runtime keys, delete, Object.defineProperty/ies) map to
the checked-dynamic type, with the literals nested in them;
- a JavaScript class whose only member is a constructor that returns a
value and never reads `this` answers that value from `new` (the return
used to be discarded silently);
- `const { env } = process` binds the data member in JavaScript;
- `o && x` / `o || x` with an always-truthy object, array or function
left operand;
- Number.parseInt/parseFloat over checked-dynamic values apply ToString;
- Function.prototype as a value is one compiler-emitted function;
- calls of String.prototype-only names (bold, italics, ...) on untyped
receivers call the receiver's own or inherited member; a string
receiver throws the refusal at run time.
Programs without these patterns compile to identical bytes: the runtime
benchmark workloads, the self-hosted compiler (LLVM and executable) and
the TypeScript corpus IR were compared against the baseline.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
9 lines
672 B
JavaScript
9 lines
672 B
JavaScript
// Number.parseInt / Number.parseFloat over checked-dynamic values apply
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// the parsers' own ToString, as supports-color does with FORCE_COLOR.
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const env = JSON.parse('{"FORCE_COLOR":"2","DEPTH":" 3.5px","EMPTY":"","HEX":"ff"}');
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console.log(Number.parseInt(env.FORCE_COLOR, 10), Math.min(Number.parseInt(env.FORCE_COLOR, 10), 3));
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console.log(Number.parseInt(env.MISSING, 10), Number.parseInt(env.EMPTY, 10), Number.parseInt(env.HEX, 16));
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console.log(Number.parseFloat(env.DEPTH), Number.parseFloat(env.MISSING));
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const values = JSON.parse("[12, true, null]");
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console.log(Number.parseInt(values[0], 10), Number.parseInt(values[1], 36), Number.parseInt(values[2], 36));
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