service-constructor-must-call-super - ESLint plugin rules

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:

src/modules/blog/service.ts
1import { MedusaService } from "@medusajs/framework/utils"2
3class BlogModuleService extends MedusaService({}) {4  constructor() {}5}

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

src/modules/blog/service.ts
1import { MedusaService } from "@medusajs/framework/utils"2
3class BlogModuleService extends MedusaService({}) {4  constructor() {5    super(...arguments)6  }7}

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.