Feat(medusa): config error handling in loaders (#2514)

**What**
- add error handling when loading project config

**How**
- Add error parameter to get-medusa-config result if an error was thrown (previously we returned an empty config)
- Discussion: 
A different, but equally valid approach could be just throwing the error rather than creating an error parameter. This causes a more ugly output without warnings and changes the api a bit but it would force error handling. wdyt?

**Why**
- cli would fail with database error `databaseMissingDriverError` if config was invalid, ex. missing a comma


### example (missing `,` in config)
**old output**
```
Successfully compiled 2 files with Babel (143ms).
[medusa-config] ⚠️ redis_url not found. A fake redis instance will be used.
[medusa-config] ⚠️ database_type not found. fallback to default sqlite.
info:    Using flag MEDUSA_FF_ORDER_EDITING from environment with value true
info:    Using flag MEDUSA_FF_SALES_CHANNELS from environment with value true
info:    Using flag MEDUSA_FF_TAX_INCLUSIVE_PRICING from environment with value true
info:    Using fake Redis
✔ Models initialized – 13ms
✔ Plugin models initialized – 0ms
✔ Repositories initialized – 17ms
⠋ Initializing databaseMissingDriverError: Wrong driver: "undefined" given. Supported drivers are: "aurora-data-api", "aurora-data-api-pg", "better-sqlite3", "capacitor", "cockroachdb", "cordova", "expo", "mariadb", "mongodb", "mssql", "mysql", "nativescript", "oracle", "postgres", "react-native", "sap", "sqlite", "sqljs".
```

**new output** 
```
Successfully compiled 2 files with Babel (185ms).
error:    Error in loading config: Unexpected identifier
error:    /Users/phko/projects/community/my-medusa-store/medusa-config.js:129
  plugins,
  ^^^^^^^

SyntaxError: Unexpected identifier
    at compileFunction (<anonymous>)
    at Object.compileFunction (node:vm:352:18)
    at wrapSafe (node:internal/modules/cjs/loader:1033:15)
    at Module._compile (node:internal/modules/cjs/loader:1069:27)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1159:10)
    at Module.load (node:internal/modules/cjs/loader:981:32)
    at Function.Module._load (node:internal/modules/cjs/loader:822:12)
    at Module.require (node:internal/modules/cjs/loader:1005:19)
    at require (node:internal/modules/cjs/helpers:102:18)
    at getConfigFile (/Users/phko/projects/community/my-medusa-store/node_modules/medusa-core-utils/dist/get-config-file.js:26:20)
```

.changeset/fresh-dingos-fix.md

@@ -0,0 +1,6 @@
+---
+"medusa-core-utils": patch
+"@medusajs/medusa": patch
+---
+
+Feat(medusa): invalid medusa-config handling in loaders

integration-tests/api/__tests__/batch-jobs/api.js

@@ -306,7 +306,6 @@ describe("/admin/batch-jobs", () => {
       await api
         .post(`/admin/batch-jobs/${jobId}/cancel`, {}, adminReqConfig)
         .catch((err) => {
-          console.log(err)
           expect(err.response.status).toEqual(400)
           expect(err.response.data.type).toEqual("not_allowed")
           expect(err.response.data.message).toEqual(

packages/medusa-core-utils/src/get-config-file.js

@@ -4,17 +4,20 @@ import path from "path"
  * Attempts to resolve the config file in a given root directory.
  * @param {string} rootDir - the directory to find the config file in.
  * @param {string} configName - the name of the config file.
- * @return {object} an object containing the config module and its path.
+ * @return {object} an object containing the config module and its path as well as an error property if the config couldn't be loaded.
  */
 function getConfigFile(rootDir, configName) {
   const configPath = path.join(rootDir, configName)
   let configFilePath = ``
   let configModule
+
   try {
     configFilePath = require.resolve(configPath)
     configModule = require(configFilePath)
   } catch (err) {
-    return {}
+    return {
+      error: err,
+    }
   }
 
   return { configModule, configFilePath }

packages/medusa/src/commands/migrate.js

@@ -1,6 +1,7 @@
 import { createConnection } from "typeorm"
 import { getConfigFile } from "medusa-core-utils"
 import featureFlagLoader from "../loaders/feature-flags"
+import { handleConfigError } from "../loaders/config"
 import Logger from "../loaders/logger"
 
 import getMigrations from "./utils/get-migrations"
@@ -11,7 +12,11 @@ const t = async function ({ directory }) {
   args.shift()
   args.shift()
 
-  const { configModule } = getConfigFile(directory, `medusa-config`)
+  const { configModule, error } = getConfigFile(directory, `medusa-config`)
+
+  if (error) {
+    handleConfigError(error)
+  }
 
   const featureFlagRouter = featureFlagLoader(configModule)
 

packages/medusa/src/commands/seed.js

@@ -6,6 +6,7 @@ import { sync as existsSync } from "fs-exists-cached"
 import { getConfigFile } from "medusa-core-utils"
 import { track } from "medusa-telemetry"
 
+import { handleConfigError } from "../loaders/config"
 import Logger from "../loaders/logger"
 import loaders from "../loaders"
 
@@ -29,7 +30,11 @@ const t = async function ({ directory, migrate, seedFile }) {
     }
   }
 
-  const { configModule } = getConfigFile(directory, `medusa-config`)
+  const { configModule, error } = getConfigFile(directory, `medusa-config`)
+
+  if (error) {
+    handleConfigError(error)
+  }
 
   const featureFlagRouter = featureFlagLoader(configModule)
 

packages/medusa/src/commands/utils/get-migrations.js

@@ -4,6 +4,8 @@ import fs from "fs"
 import { isString } from "lodash"
 import { sync as existsSync } from "fs-exists-cached"
 import { getConfigFile, createRequireFromPath } from "medusa-core-utils"
+import { handleConfigError } from "../../loaders/config"
+import logger from "../../loaders/logger"
 
 function createFileContentHash(path, files) {
   return path + files
@@ -88,7 +90,12 @@ function resolvePlugin(pluginName) {
 }
 
 export default async (directory, featureFlagRouter) => {
-  const { configModule } = getConfigFile(directory, `medusa-config`)
+  const { configModule, error } = getConfigFile(directory, `medusa-config`)
+
+  if (error) {
+    handleConfigError(error)
+  }
+
   const { plugins } = configModule
 
   const resolved = plugins.map((plugin) => {

packages/medusa/src/loaders/config.ts

@@ -1,5 +1,6 @@
 import { ConfigModule } from "../types/global"
 import { getConfigFile } from "medusa-core-utils/dist"
+import logger from "./logger"
 
 const isProduction = ["production", "prod"].includes(process.env.NODE_ENV || "")
 
@@ -9,9 +10,25 @@ const errorHandler = isProduction
     }
   : console.log
 
+export const handleConfigError = (error: Error): void => {
+  logger.error(`Error in loading config: ${error.message}`)
+  if (error.stack) {
+    logger.error(error.stack)
+  }
+  process.exit(1)
+}
+
 export default (rootDirectory: string): ConfigModule => {
-  const { configModule } = getConfigFile(rootDirectory, `medusa-config`) as {
+  const { configModule, error } = getConfigFile(
+    rootDirectory,
+    `medusa-config`
+  ) as {
     configModule: ConfigModule
+    error: Error | null
+  }
+
+  if (error) {
+    handleConfigError(error)
   }
 
   if (!configModule?.projectConfig?.redis_url) {

packages/medusa/src/loaders/index.ts

@@ -115,7 +115,10 @@ export default async ({
 
   const dbActivity = Logger.activity("Initializing database")
   track("DATABASE_INIT_STARTED")
-  const dbConnection = await databaseLoader({ container, configModule })
+  const dbConnection = await databaseLoader({
+    container,
+    configModule,
+  })
   const dbAct = Logger.success(dbActivity, "Database initialized") || {}
   track("DATABASE_INIT_COMPLETED", { duration: dbAct.duration })
 

packages/medusa/src/utils/db-aware-column.ts

@@ -18,16 +18,12 @@ const pgSqliteGenerationMapping: {
 let dbType: string
 export function resolveDbType(pgSqlType: ColumnType): ColumnType {
   if (!dbType) {
-    try {
-      const { configModule } = getConfigFile(
-        path.resolve("."),
-        `medusa-config`
-      ) as any
-      dbType = configModule.projectConfig.database_type
-    } catch (error) {
-      // Default to Postgres to allow for e.g. migrations to run
-      dbType = "postgres"
-    }
+    const { configModule } = getConfigFile(
+      path.resolve("."),
+      `medusa-config`
+    ) as any
+
+    dbType = configModule?.projectConfig?.database_type || "postgres"
   }
 
   if (dbType === "sqlite" && (pgSqlType as string) in pgSqliteTypeMapping) {
@@ -40,16 +36,12 @@ export function resolveDbGenerationStrategy(
   pgSqlType: "increment" | "uuid" | "rowid"
 ): "increment" | "uuid" | "rowid" {
   if (!dbType) {
-    try {
-      const { configModule } = getConfigFile(
-        path.resolve("."),
-        `medusa-config`
-      ) as any
-      dbType = configModule.projectConfig.database_type
-    } catch (error) {
-      // Default to Postgres to allow for e.g. migrations to run
-      dbType = "postgres"
-    }
+    const { configModule } = getConfigFile(
+      path.resolve("."),
+      `medusa-config`
+    ) as any
+
+    dbType = configModule?.projectConfig?.database_type || "postgres"
   }
 
   if (dbType === "sqlite" && pgSqlType in pgSqliteTypeMapping) {

packages/medusa/src/utils/manual-auto-increment.ts

@@ -5,17 +5,12 @@ import { getConnection } from "typeorm"
 export async function manualAutoIncrement(
   tableName: string
 ): Promise<number | null> {
-  let dbType
-  try {
-    const { configModule } = getConfigFile(
-      path.resolve("."),
-      `medusa-config`
-    ) as any
-    dbType = configModule.projectConfig.database_type
-  } catch (error) {
-    // Default to Postgres to allow for e.g. migrations to run
-    dbType = "postgres"
-  }
+  const { configModule } = getConfigFile(
+    path.resolve("."),
+    `medusa-config`
+  ) as any
+
+  const dbType = configModule?.projectConfig?.database_type || "postgres"
 
   if (dbType === "sqlite") {
     const connection = getConnection()