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Emilios1995/ramda-updateKeys.js

Created June 13, 2017 19:10
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ramda-updateKeys.js
// updateKeys :: (String -> String) -> Object -> Object
const updateKeys = f =>
R.compose(R.fromPairs, R.map(R.over(R.lensIndex(0), f)), R.toPairs);
// updateKeysWithMap :: Object -> Object -> Object
const updateKeysWithMap = map => updateKeys(k => map[k] || k);
// example:
updateKeysWithMap({ oldKey: "newKey" })({ oldKey: 2 }); // -> { newKey: 2 }
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