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yazeedb
2018-04-10 15:47:06 -04:00
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snippets/renameKeys.md
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@ -7,12 +7,14 @@ Get the object's keys with `Object.keys()` and return an object with the new key
The initial value is an empty object which is used as the accumulator, `acc`, in the callback function. Using the spread operator `(...)`, `acc` is continuously merged with a new object containing the new key and original object's value. If a new key doesn't exist, fallback to original object's key. The initial value is an empty object which is used as the accumulator, `acc`, in the callback function. Using the spread operator `(...)`, `acc` is continuously merged with a new object containing the new key and original object's value. If a new key doesn't exist, fallback to original object's key.
```js ```js
const renameKeys = (keysMap, obj) => Object const renameKeys = (keysMap, obj) =>
.keys(obj) Object.keys(obj).reduce(
.reduce((acc, key) => ({ (acc, key) => ({
...acc, ...acc,
...{ [keysMap[key] || key]: obj[key] } ...{ [keysMap[key] || key]: obj[key] }
}), {}); }),
{}
);
``` ```
```js ```js