use-inject-manager-on-public-methods - ESLint plugin rules

This rule requires that service methods accepting a Context parameter are decorated with @InjectManager() (public) or @InjectTransactionManager() (protected or private).

Severity#

warn. 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 method on a service class that accepts a Context parameter but isn't decorated with the appropriate manager decorator.

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  async list(sharedContext: Context = {}) {}5}

Instead, decorate a public method with @InjectManager():

src/modules/blog/service.ts
1import {2  MedusaService,3  InjectManager,4} from "@medusajs/framework/utils"5
6class BlogModuleService extends MedusaService({}) {7  @InjectManager()8  async list(sharedContext: Context = {}) {}9}

Why it's Important#

The @InjectManager() and @InjectTransactionManager() decorators inject the entity manager into the method's context. Without them, the method runs without a managed transaction and database operations can fail.

Learn more in the Database Operations in Services documentation.

Fixable#

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

Turn it Off#

To turn off this rule, set it to off in your ESLint configuration:

eslint.config.ts
1import { defineConfig } from "eslint/config"2import medusa from "@medusajs/eslint-plugin"3
4export default defineConfig([5  ...medusa.configs.recommended,6  {7    rules: {8      "@medusajs/use-inject-manager-on-public-methods": "off",9    },10  },11])

Or disable it for a single line using an inline comment:

Code
1// eslint-disable-next-line @medusajs/use-inject-manager-on-public-methods2async list(sharedContext: Context = {}) {}