Resolving 'TypeError: db.collection is not a function' in Node.js MongoDB

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Understanding the Error

Common Causes

Incorrect MongoDB Client Initialization:

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Misconfiguration:

Incorrect or missing configuration parameters (like the URI or database name) can leave the db object improperly configured.

Outdated Packages:

Sometimes, issues arise due to outdated MongoDB drivers or compatibility problems. Always ensure you have the latest version of MongoDB packages installed.

Solutions

Await Connection:

Ensure the MongoDB client connection is awaited before calling any database methods.

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Validate Configuration:

Double-check your MongoDB URI and database name to ensure they are correct. A typo in these settings can prevent a successful connection.

Update MongoDB Driver:

Ensure you are using the most up-to-date version of the MongoDB driver.

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Log the db Object:

Sometimes, simply logging the db object to the console can give you hints.

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Happy coding!