one line output in JavaScript and typescript
IntuitionApproachComplexity
Time complexity:

Space complexity:
Code
# Intuition
<!-- Describe your first thoughts on how to solve this problem. -->

# Approach
<!-- Describe your approach to solving the problem. -->

# Complexity
- Time complexity:
<!-- Add your time complexity here, e.g. $$O(n)$$ -->

- Space complexity:
<!-- Add your space complexity here, e.g. $$O(n)$$ -->

# Code
```typescript []
type JSONValue = null | boolean | number | string | JSONValue[] | { [key: string]: JSONValue };
type Fn = (value: JSONValue) => number

function sortBy(arr: JSONValue[], fn: Fn): JSONValue[] {
    return arr.sort((a, b) => fn(a) - fn(b));
};
```
['TypeScript', 'JavaScript']