[Solved] You wrote this code to configure sessions but get an error: "TypeError: session is not a function". What is the likely cause? ```typescript import * as session from 'express-session'; app.... | NestJS

NestJS - Authentication

You wrote this code to configure sessions but get an error: "TypeError: session is not a function". What is the likely cause? ```typescript import * as session from 'express-session'; app.use(session({ secret: 'key' })); ```

AMissing session secret option

Bapp.use is not a function

CIncorrect import syntax; should use default import

DSession middleware must be added after routes

Step-by-Step Solution

Solution:

Step 1: Analyze import style
express-session exports a default function; using * as session imports an object, not a function.
Step 2: Correct import syntax
Use `import session from 'express-session';` to import the function correctly.
Final Answer:
Incorrect import syntax; should use default import -> Option C
Quick Check:
Use default import for express-session = B [OK]

Quick Trick: Import express-session as default to avoid TypeError [OK]

Common Mistakes:

Using namespace import instead of default import
Ignoring error message details
Misplacing middleware order

Master "Authentication" in NestJS

9 interactive learning modes - each teaches the same concept differently

Learn Why Deep Visual Try Challenge Project Recall Perf

More NestJS Quizzes

What is the likely cause?

Step 1: Analyze import style

Step 2: Correct import syntax

Final Answer:

Quick Check:

Want More Practice?