admin-category.component.ts:47 ERROR FirebaseError: Expected type ‘Query’, but it was: a custom wh object

admin-category.component.ts:47 ERROR FirebaseError: Expected type ‘Query’, but it was: a custom wh object

If you are encountering the error message “admin-category.component.ts:47 ERROR FirebaseError: Expected type ‘Query’, but it was: a custom wh object” in your TypeScript code, don’t worry! This blog post will guide you through the possible solutions to resolve this issue.

Solution 1: Check Query Type

The error message indicates that the expected type is ‘Query’, but the actual type is a custom ‘wh’ object. This suggests that there might be a mismatch between the expected and actual types.

To resolve this, you can check the type of the ‘wh’ object and ensure that it matches the expected ‘Query’ type. Here’s an example:

// Check the type of 'wh' object
console.log(typeof wh);

// Ensure 'wh' is of type 'Query'
if (wh instanceof Query) {
  // Your code here
} else {
  console.error("Expected type 'Query', but it was: ", typeof wh);
}

Solution 2: Convert Custom Object to Query

If the ‘wh’ object is a custom object that needs to be converted to a ‘Query’ object, you can use the Firebase SDK’s query methods to achieve this. Here’s an example:

// Convert 'wh' object to 'Query'
const query = firebase.firestore().collection('yourCollection').where('yourField', '==', wh.yourValue);

// Use the converted 'Query' object
query.get().then((snapshot) => {
  // Your code here
}).catch((error) => {
  console.error("Error executing query:", error);
});

By using the appropriate Firebase SDK query methods, you can convert your custom ‘wh’ object to a ‘Query’ object and execute the desired operations.

Conclusion

The “admin-category.component.ts:47 ERROR FirebaseError: Expected type ‘Query’, but it was: a custom wh object” error can be resolved by checking the type of the ‘wh’ object and ensuring it matches the expected ‘Query’ type. Alternatively, if the ‘wh’ object needs to be converted to a ‘Query’ object, you can use the Firebase SDK’s query methods to achieve this.

Remember to always double-check your code and ensure that the expected and actual types match to avoid such errors. Happy coding!