Oops! Trying to access properties of an undefined value in NestJS, but the value is not defined

Encountering an issue while trying to create a new module in NestJS using the Nest CLI. The same error occurs when attempting to generate any type of nest schematic. Any insight into what may be causing this would be greatly appreciated.

This is happening on a machine running Windows 10.

The command I used was - 

nest g module <module-name>
. The error also arises with commands like 
nest g controller <controller-name>
.

The error message received is as follows -

> nest g module task
Error: Cannot read properties of undefined (reading 'properties')

Failed to execute command: node @nestjs/schematics:module --name=task --no-dry-run --no-skip-import --language="ts" --source-root="src" --spec --no-flat --spec-file-suffix="spec"
javascripttypescriptwindowsnestjsnest

Answer №1

For those utilizing yarn, consider implementing the following:

yarn add @nestjs/schematics --dev

In case npm is being used, it is recommended to execute the following command:

npm install --save-dev @nestjs/schematics

Answer №2

This issue was resolved by upgrading the version of "@nestjs/schematics" to "10.1.4"

Answer №3

If you're encountering this issue while working with TypeScript 5.5.4, it could be a known problem.

To resolve this, consider specifying the exact version 5.5.3 of TypeScript in your package.json within the devDependencies section like this:

"typescript": "=5.5.3"

For more information, check out https://github.com/nestjs/nest-cli/issues/2662

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