enum-fp
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Functional enum type for javascript with simple pattern matching
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<a href="index.html">All files</a> Enum.js
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">import { createEnumFactory } from './utils';
import T, { validateArgs } from './Type';
// type TypeConstructor = ...a -> EnumTagType
// createConstructor :: (Enum, ConstructorDescription) -> TypeConstructor
export const createConstructor = (Type, { name, props }) => (...args) => {
if(props ? !validateArgs(props, args) : false)
throw new TypeError(`Invalid number of args passed to constructor ${name}`);
const self = {
// args :: Array *
args,
// name :: String
name,
// props :: ?Array String
props,
// is :: String | EnumTagType | ConstructorDescription ~> Boolean
is: otherType => [otherType, otherType.name].indexOf(name) !== -1,
// match :: Object (* -> b) ~> b
match: pattern => Type.match(self, pattern),
};
return self;
};
// Enum :: Array String | Object * -> Enum
export default createEnumFactory({ createConstructor });
// Type
export { T };</pre></td></tr>
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