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Nate-Wilkins/flowjs-boolean-filter.js

Created October 25, 2018 20:24
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FlowJS hackery to filter down arrays to specific types.
Raw
flowjs-boolean-filter.js
type A = {
a: number
};
const myA: A = { a: 1 };
const ac = [undefined, myA];
const ba: $ReadOnlyArray<A> = ac.filter(Boolean);
const c = (justAs: $ReadOnlyArray<A>) => console.log(justAs);
c(ba);
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