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enjoylife/enumMap.js

Created January 10, 2020 00:25
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enumMap flow util
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enumMap.js
export type EnumNames = 'A' | 'B' | 'C';
export type EnumMap<K: string, V, O: Object = *> = O & {
[K]: V & $ElementType<O, K>,
};
export type SpecificMap = EnumMap<EnumNames, any>;
const cbNames: EnumMap<EnumNames, (any) => void> = {
A: v => v,
B: v => v.prop,
C: () => {},
};
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