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Chris Tate
d3dfdade8e
- Run published three.js vector, matrix, and quaternion operations natively and as Wasm without a JavaScript engine. - Preserve shared class prototype data and JavaScript overload arguments. - Support Math function values and distinct npm import and require entries.
16 lines
607 B
JavaScript
16 lines
607 B
JavaScript
class Point {
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static { Point.prototype.isPoint = true; }
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constructor(x = 0) { this.x = x; }
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}
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/** @param {number} [value] */
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function scalar(value) { return value === undefined ? 'missing' : value.toString(); }
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/** @param {number|Point} value */
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function coordinate(value) {
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if (value.isPoint) return scalar(value.x);
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return scalar(value);
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}
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console.log(coordinate(7), coordinate(new Point(9)), coordinate(0));
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/** @param {number|Point|undefined} value */
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function optionalBrand(value) { return value?.isPoint; }
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console.log(optionalBrand(undefined), optionalBrand(2), optionalBrand(new Point(3)));
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