Function keys

keys(this: GoodDB): string[] | Promise<string[]>
Get all the keys
Parameters
- this: GoodDB
Returns string[] | Promise<string[]>
A promise if the driver is async, otherwise an array
Example: Get all the keys
Using the JSONDriver (sync)
```
const db = new GoodDB(new JSONDriver({
path: './database.json'
}));
db.keys();
```
Using the MongoDBDriver (async)
```
const db = new GoodDB(new MongoDBDriver({
uri: "..."
}));
await db.connect();
await db.keys();
```
- Defined in src/Methods/CollectionMethods.ts:300