Function compute

compute<K, V>(map: Map<K, V>): (<T>(key: K, remappingFunction: ((key: K, value: T) => undefined | V)) => undefined | V)
Mutation

Remark
only returns undefined if mappingFunction returns undefined

Example
Compute the new value based on the old Map entry
```
const map = new Map();
compute(map)(1, (key, value) => value ?? 2);
console.log(map); // Map([[1, 2]])
```
Type Parameters
- K
  
  the Map key type
- V
  
  the Map value type
Parameters
- map: Map<K, V>
  
  the Map to set the entry
Returns (<T>(key: K, remappingFunction: ((key: K, value: T) => undefined | V)) => undefined | V)
- - <T>(key: K, remappingFunction: ((key: K, value: T) => undefined | V)): undefined | V
  - Type Parameters
    - T
    Parameters
    - key: K
    - remappingFunction: ((key: K, value: T) => undefined | V)
      
      (key: K, value: T): undefined | V
      
      Parameters
      
      key: K
      
      value: T
      
      Returns undefined | V
    Returns undefined | V
- Defined in packages/map/src/compute.ts:22

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