Function has

has(
    this: GoodDB,
    key: string,
    options?: methodOptions,
): boolean | Promise<boolean>
Check if a key exists
Parameters
- this: GoodDB
- key: string
  The key to check if it exists
- Optionaloptions: methodOptions
  The options to use
Returns boolean | Promise<boolean>
A promise if the driver is async, otherwise a boolean
Example: Check if a key exists
Using the JSONDriver (sync)
```
const db = new GoodDB(new JSONDriver({
path: './database.json'
}));
db.has('key');
```
Using the MongoDBDriver (async)
```
const db = new GoodDB(new MongoDBDriver({
uri: "..."
}));
await db.connect();
await db.has('key');
```
- Defined in src/Methods/CollectionMethods.ts:638