19 lines
660 B
JavaScript
19 lines
660 B
JavaScript
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function Component(props) {
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// a and b are technically independent, but their mutation is interleaved
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// so they are grouped in a single reactive scope. a does not have any
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// reactive inputs, but b does. therefore, we have to treat a as reactive,
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// since it will be recreated based on a reactive input.
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const a = {};
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const b = [];
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props.b |> b.push(%);
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a.a = null;
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// because a may recreate when b does, it becomes reactive. we have to recreate
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// c if a changes.
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const c = [a];
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// Example usage that could fail if we didn't treat a as reactive:
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// const [c, a] = Component({b: ...});
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// assert(c[0] === a);
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return [c, a];
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}
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