Function filter

filter(
    this: GoodDB,
    key: string,
    callback: (value: any, index: number, obj: any[]) => unknown,
    options?: methodOptions,
): any[] | Promise<any[]>
Filter values in an array stored in a key
Parameters
- this: GoodDB
- key: string
  The key of the array to filter
- callback: (value: any, index: number, obj: any[]) => unknown
  The callback filter function to use
- Optionaloptions: methodOptions
  The options to use
Returns any[] | Promise<any[]>
A promise if the driver is async, otherwise an array of filtered values
Example: Filter values in an array
Using the JSONDriver (sync)
```
const db = new GoodDB(new JSONDriver({
path: './database.json'
}));

db.filter('users', (user) => user.age > 18);
```
Using the MongoDBDriver (async)
```
const db = new GoodDB(new MongoDBDriver({
uri: "..."
}));

await db.connect();

await db.filter('users', (user) => user.age > 18);
```
- Defined in src/Methods/ArrayMethods.ts:420