fix: load custom modules by path (#6312)

What:
medusa-config.js loading custom modules by their path.

```typescript
{
  modules: {
    internalModule: {
      scope: MODULE_SCOPE.INTERNAL,
      resources: MODULE_RESOURCE_TYPE.SHARED,
      resolve: "./internal_module",
      definition: {
        key: "internalModule",
        registrationName: "internalModule",
      },
    },
  }
}
```

packages/modules-sdk/src/__mocks__/inventory-module.ts

@@ -5,7 +5,6 @@ export const InventoryModule = {
     defaultPackage: false,
     label: "InventoryService",
     isRequired: false,
-    canOverride: true,
     isQueryable: true,
     dependencies: [],
     defaultModuleDeclaration: {

packages/modules-sdk/src/__mocks__/inventory-stock-location-link.ts

@@ -4,7 +4,6 @@ export const InventoryStockLocationLink = {
     registrationName: "inventoryStockLocationLink",
     defaultPackage: "",
     label: "inventoryStockLocationLink",
-    canOverride: true,
     isRequired: false,
     isQueryable: true,
     defaultModuleDeclaration: {

packages/modules-sdk/src/__mocks__/product-inventory-link.ts

@@ -4,7 +4,6 @@ export const ProductInventoryLinkModule = {
     registrationName: "productVariantInventoryInventoryItemLink",
     defaultPackage: "",
     label: "productVariantInventoryInventoryItemLink",
-    canOverride: true,
     isRequired: false,
     isQueryable: true,
     defaultModuleDeclaration: {

packages/modules-sdk/src/__mocks__/product-module.ts

@@ -5,7 +5,6 @@ export const ProductModule = {
     defaultPackage: false,
     label: "ProductModuleService",
     isRequired: false,
-    canOverride: true,
     isQueryable: true,
     dependencies: ["eventBusModuleService"],
     defaultModuleDeclaration: {

packages/modules-sdk/src/__mocks__/stock-location-module.ts

@@ -5,7 +5,6 @@ export const StockLocationModule = {
     defaultPackage: false,
     label: "StockLocationService",
     isRequired: false,
-    canOverride: true,
     isQueryable: true,
     dependencies: ["eventBusService"],
     defaultModuleDeclaration: {

packages/modules-sdk/src/definitions.ts

@@ -64,7 +64,6 @@ export const ModulesDefinition: { [key: string | Modules]: ModuleDefinition } =
       registrationName: ModuleRegistrationName.EVENT_BUS,
       defaultPackage: MODULE_PACKAGE_NAMES[Modules.EVENT_BUS],
       label: upperCaseFirst(ModuleRegistrationName.EVENT_BUS),
-      canOverride: true,
       isRequired: true,
       dependencies: ["logger"],
       defaultModuleDeclaration: {
@@ -79,7 +78,6 @@ export const ModulesDefinition: { [key: string | Modules]: ModuleDefinition } =
       defaultPackage: false,
       label: upperCaseFirst(ModuleRegistrationName.STOCK_LOCATION),
       isRequired: false,
-      canOverride: true,
       isQueryable: true,
       dependencies: ["eventBusService"],
       defaultModuleDeclaration: {
@@ -94,7 +92,6 @@ export const ModulesDefinition: { [key: string | Modules]: ModuleDefinition } =
       defaultPackage: false,
       label: upperCaseFirst(ModuleRegistrationName.INVENTORY),
       isRequired: false,
-      canOverride: true,
       isQueryable: true,
       dependencies: ["eventBusService"],
       defaultModuleDeclaration: {
@@ -109,7 +106,6 @@ export const ModulesDefinition: { [key: string | Modules]: ModuleDefinition } =
       defaultPackage: MODULE_PACKAGE_NAMES[Modules.CACHE],
       label: upperCaseFirst(ModuleRegistrationName.CACHE),
       isRequired: true,
-      canOverride: true,
       defaultModuleDeclaration: {
         scope: MODULE_SCOPE.INTERNAL,
         resources: MODULE_RESOURCE_TYPE.SHARED,
@@ -121,7 +117,6 @@ export const ModulesDefinition: { [key: string | Modules]: ModuleDefinition } =
       defaultPackage: false,
       label: upperCaseFirst(ModuleRegistrationName.PRODUCT),
       isRequired: false,
-      canOverride: true,
       isQueryable: true,
       dependencies: [ModuleRegistrationName.EVENT_BUS, "logger"],
       defaultModuleDeclaration: {
@@ -135,7 +130,6 @@ export const ModulesDefinition: { [key: string | Modules]: ModuleDefinition } =
       defaultPackage: false,
       label: upperCaseFirst(ModuleRegistrationName.PRICING),
       isRequired: false,
-      canOverride: true,
       isQueryable: true,
       dependencies: ["logger"],
       defaultModuleDeclaration: {
@@ -149,7 +143,6 @@ export const ModulesDefinition: { [key: string | Modules]: ModuleDefinition } =
       defaultPackage: false,
       label: upperCaseFirst(ModuleRegistrationName.PROMOTION),
       isRequired: false,
-      canOverride: true,
       isQueryable: true,
       dependencies: ["logger"],
       defaultModuleDeclaration: {
@@ -163,7 +156,6 @@ export const ModulesDefinition: { [key: string | Modules]: ModuleDefinition } =
       defaultPackage: false,
       label: upperCaseFirst(ModuleRegistrationName.AUTH),
       isRequired: false,
-      canOverride: true,
       isQueryable: true,
       dependencies: ["logger"],
       defaultModuleDeclaration: {
@@ -177,7 +169,6 @@ export const ModulesDefinition: { [key: string | Modules]: ModuleDefinition } =
       defaultPackage: false,
       label: upperCaseFirst(ModuleRegistrationName.WORKFLOW_ENGINE),
       isRequired: false,
-      canOverride: true,
       isQueryable: true,
       dependencies: ["logger"],
       defaultModuleDeclaration: {
@@ -191,7 +182,6 @@ export const ModulesDefinition: { [key: string | Modules]: ModuleDefinition } =
       defaultPackage: false,
       label: upperCaseFirst(ModuleRegistrationName.SALES_CHANNEL),
       isRequired: false,
-      canOverride: true,
       isQueryable: true,
       dependencies: ["logger"],
       defaultModuleDeclaration: {
@@ -205,7 +195,6 @@ export const ModulesDefinition: { [key: string | Modules]: ModuleDefinition } =
       defaultPackage: false,
       label: upperCaseFirst(ModuleRegistrationName.CART),
       isRequired: false,
-      canOverride: true,
       isQueryable: true,
       dependencies: ["logger"],
       defaultModuleDeclaration: {
@@ -219,7 +208,6 @@ export const ModulesDefinition: { [key: string | Modules]: ModuleDefinition } =
       defaultPackage: false,
       label: upperCaseFirst(ModuleRegistrationName.CUSTOMER),
       isRequired: false,
-      canOverride: true,
       isQueryable: true,
       dependencies: ["logger"],
       defaultModuleDeclaration: {
@@ -233,7 +221,6 @@ export const ModulesDefinition: { [key: string | Modules]: ModuleDefinition } =
       defaultPackage: false,
       label: upperCaseFirst(ModuleRegistrationName.PAYMENT),
       isRequired: false,
-      canOverride: true,
       isQueryable: true,
       dependencies: ["logger"],
       defaultModuleDeclaration: {

packages/modules-sdk/src/loaders/__tests__/register-modules.ts

@@ -18,7 +18,6 @@ describe("module definitions loader", () => {
     label: "TestService",
     isLegacy: true,
     isRequired: false,
-    canOverride: true,
     defaultModuleDeclaration: {
       scope: MODULE_SCOPE.INTERNAL,
       resources: MODULE_RESOURCE_TYPE.SHARED,

packages/modules-sdk/src/loaders/register-modules.ts

@@ -94,7 +94,7 @@ function getInternalModuleResolution(
 
   // If user added a module and it's overridable, we resolve that instead
   const isString = typeof moduleConfig === "string"
-  if (definition.canOverride && (isString || (isObj && moduleConfig.resolve))) {
+  if (isString || (isObj && moduleConfig.resolve)) {
     resolutionPath = !moduleExports
       ? resolveCwd(isString ? moduleConfig : (moduleConfig.resolve as string))
       : // Explicitly assign an empty string, later, we will check if the value is exactly false.

packages/modules-sdk/src/loaders/utils/load-internal.ts

@@ -29,12 +29,12 @@ export async function loadInternalModule(
     // the exports. This is useful when a package export an initialize function which will bootstrap itself and therefore
     // does not need to import the package that is currently being loaded as it would create a
     // circular reference.
-    const path = resolution.resolutionPath as string
+    const modulePath = resolution.resolutionPath as string
 
     if (resolution.moduleExports) {
       loadedModule = resolution.moduleExports
     } else {
-      loadedModule = await import(path)
+      loadedModule = await import(modulePath)
       loadedModule = (loadedModule as any).default
     }
   } catch (error) {

packages/modules-sdk/src/medusa-app.ts

@@ -74,7 +74,7 @@ async function loadModules(modulesConfig, sharedContainer) {
       let path: string
       let moduleExports: ModuleExports | undefined = undefined
       let declaration: any = {}
-      let definition: ModuleDefinition | undefined = undefined
+      let definition: Partial<ModuleDefinition> | undefined = undefined
 
       if (isObject(mod)) {
         const mod_ = mod as unknown as InternalModuleDeclaration
@@ -102,7 +102,7 @@ async function loadModules(modulesConfig, sharedContainer) {
         defaultPath: path,
         declaration,
         sharedContainer,
-        moduleDefinition: definition,
+        moduleDefinition: definition as ModuleDefinition,
         moduleExports,
       })) as LoadedModule
 

packages/modules-sdk/src/medusa-module.ts

@@ -86,7 +86,7 @@ export class MedusaModule {
       return MedusaModule.getModuleInstance(key)
     })
   }
-  
+
   public static onApplicationStart(): void {
     for (const instances of MedusaModule.instances_.values()) {
       for (const instance of Object.values(instances) as IModuleService[]) {
@@ -354,7 +354,6 @@ export class MedusaModule {
       dependencies: definition.dependencies,
       defaultPackage: "",
       label: definition.label,
-      canOverride: true,
       isRequired: false,
       isQueryable: true,
       defaultModuleDeclaration: definition.defaultModuleDeclaration,