feat(medusa): add error handling to exec script (#7394)

packages/medusa/src/commands/exec.ts

@@ -1,6 +1,7 @@
 import loaders from "../loaders"
 import express from "express"
 import path from "path"
+import { existsSync } from "fs"
 import logger from "../loaders/logger"
 import { ExecArgs } from "@medusajs/types"
 
@@ -9,12 +10,24 @@ type Options = {
   args: string[]
 }
 
-export default async function script({ file, args }: Options) {
+export default async function exec({ file, args }: Options) {
   logger.info(`Executing script at ${file}...`)
   const app = express()
   const directory = process.cwd()
 
   try {
+    // check if the file exists
+    const filePath = path.resolve(directory, file)
+    if (!existsSync(filePath)) {
+      throw new Error(`File ${filePath} doesn't exist.`)
+    }
+
+    const scriptToExec = (await import(path.resolve(filePath))).default
+
+    if (!scriptToExec || typeof scriptToExec !== "function") {
+      throw new Error(`File doesn't default export a function to execute.`)
+    }
+
     // set worker mode
     process.env.MEDUSA_WORKER_MODE = "worker"
 
@@ -23,14 +36,12 @@ export default async function script({ file, args }: Options) {
       expressApp: app,
     })
 
-    const scriptFile = (await import(path.resolve(directory, file))).default
-
     const scriptParams: ExecArgs = {
       container,
       args,
     }
 
-    await scriptFile(scriptParams)
+    await scriptToExec(scriptParams)
 
     logger.info(`Finished executing script.`)