export const metadata = { title: service-constructor-must-call-super - ESLint plugin rules, }

{metadata.title}

This rule requires that a service extending MedusaService(...) with a constructor calls super(...arguments).

Severity

error. This rule is enabled in the recommended preset.

What it Targets

This rule targets service files in your project's src/modules directory. It reports a constructor on a class that extends MedusaService(...) when the constructor doesn't call super(...arguments).

The following code is reported by the rule:

import { MedusaService } from "@medusajs/framework/utils"

class BlogModuleService extends MedusaService({}) {
  constructor() {}
}

Instead, call super(...arguments) in the constructor:

import { MedusaService } from "@medusajs/framework/utils"

class BlogModuleService extends MedusaService({}) {
  constructor() {
    super(...arguments)
  }
}

Why it's Important

The MedusaService factory sets up the service's data-management methods and dependencies in its constructor. If you don't call super(...arguments), that setup never runs and the service fails at runtime.

Learn more in the Service Factory documentation.

Fixable

This rule is auto-fixable. Run the linter with the --fix option to apply the fix automatically.