[Solved] You wrote this code but get a runtime error:TypeOrmModule.forRoot({ type: 'mysql', host: 'localhost', port: 3306, username: 'root', password: 'pass', database: 'test', entities: [User], synchronize:... | NestJS

NestJS - Database with TypeORM

You wrote this code but get a runtime error:

TypeOrmModule.forRoot({
  type: 'mysql',
  host: 'localhost',
  port: 3306,
  username: 'root',
  password: 'pass',
  database: 'test',
  entities: [User],
  synchronize: true,
})

What is the most likely cause?

AIncorrect port number for MySQL

Bsynchronize cannot be true for MySQL

CEntities array should be empty

DMissing MySQL driver package in dependencies

Step-by-Step Solution

Solution:

Step 1: Check common runtime errors
Runtime errors often occur if the database driver package is missing.
Step 2: Verify MySQL driver presence
For MySQL, mysql2 package must be installed; otherwise, connection fails.
Final Answer:
Missing MySQL driver package in dependencies -> Option D
Quick Check:
Missing DB driver package = runtime error [OK]

Quick Trick: Install mysql2 package for MySQL connection [OK]

Common Mistakes:

Assuming port 3306 is wrong
Thinking entities array must be empty
Believing synchronize is disallowed for MySQL

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More NestJS Quizzes

You wrote this code but get a runtime error:

Step 1: Check common runtime errors

Step 2: Verify MySQL driver presence

Final Answer:

Quick Check:

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