electron-userland · mmaietta · Jun 3, 2025 · Jun 3, 2025 · Jun 3, 2025 · Jun 3, 2025
diff --git a/.changeset/little-pandas-mix.md b/.changeset/little-pandas-mix.md
@@ -0,0 +1,5 @@
+---
+"builder-util": patch
+---
+
+chore: wrapping Error in exec rejection so as to pass through error code to downstream logic
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
@@ -167,7 +167,7 @@ jobs:
         run: pnpm generate-all
 
   test-windows:
-    runs-on: windows-2019
+    runs-on: windows-2022
     timeout-minutes: 20
     strategy:
       fail-fast: false

diff --git a/packages/builder-util/src/util.ts b/packages/builder-util/src/util.ts
@@ -123,7 +123,7 @@ export function exec(file: string, args?: Array<string> | null, options?: ExecFi
         } else {
           const code = (error as any).code
           // https://github.com/npm/npm/issues/17624
-          if ((file.toLowerCase().endsWith("npm") || file.toLowerCase().endsWith("npm.cmd")) && args?.includes("list") && args?.includes("--silent")) {
+          if (code === 1 && (file.toLowerCase().endsWith("npm") || file.toLowerCase().endsWith("npm.cmd")) && args?.includes("list") && args?.includes("--silent")) {
             console.error({ file, code }, error.message)
             resolve(stdout.toString())
             return
@@ -142,7 +142,8 @@ export function exec(file: string, args?: Array<string> | null, options?: ExecFi
             message += `\n${chalk.red(stderr.toString())}`
           }
 
-          reject(new Error(message))
+          // TODO: switch to ECMA Script 2026 Error class with `cause` property to return stack trace
+          reject(new ExecError(file, code, message, "", `${error.code || ExecError.code}`))
         }
       }
     )
@@ -271,12 +272,14 @@ function formatOut(text: string, title: string) {
 export class ExecError extends Error {
   alreadyLogged = false
 
+  static code = "ERR_ELECTRON_BUILDER_CANNOT_EXECUTE"
+
   constructor(
     command: string,
     readonly exitCode: number,
     out: string,
     errorOut: string,
-    code = "ERR_ELECTRON_BUILDER_CANNOT_EXECUTE"
+    code = ExecError.code
   ) {
     super(`${command} process failed ${code}${formatOut(String(exitCode), "Exit code")}${formatOut(out, "Output")}${formatOut(errorOut, "Error output")}`)
     ;(this as NodeJS.ErrnoException).code = code

diff --git a/packages/dmg-builder/src/dmg.ts b/packages/dmg-builder/src/dmg.ts
@@ -12,7 +12,7 @@
 import { TmpDir } from "temp-file"
 import { addLicenseToDmg } from "./dmgLicense"
 import { attachAndExecute, computeBackground, detach, getDmgVendorPath } from "./dmgUtil"
-import { hdiUtil } from "./hdiuil"
+import { hdiUtil, hdiutilTransientExitCodes } from "./hdiuil"
 
 export class DmgTarget extends Target {
   readonly options: DmgOptions = this.packager.config.dmg || Object.create(null)
@@ -197,20 +197,27 @@
 }
 
 async function createStageDmg(tempDmg: string, appPath: string, volumeName: string) {
-  //noinspection SpellCheckingInspection
-  const imageArgs = addLogLevel(["create", "-srcfolder", appPath, "-volname", volumeName, "-anyowners", "-nospotlight", "-format", "UDRW"])
+  const createArgs = ["create", "-srcfolder", appPath, "-volname", volumeName, "-anyowners", "-nospotlight", "-format", "UDRW"]
+  const imageArgs = addLogLevel(createArgs)
   if (log.isDebugEnabled) {
     imageArgs.push("-debug")
   }
 
   imageArgs.push("-fs", "APFS")
   imageArgs.push(tempDmg)
-  await hdiUtil(imageArgs)
+  await hdiUtil(imageArgs).catch(async e => {
+      if (hdiutilTransientExitCodes.has(e.code)) {
+        // Delay then create, then retry with verbose output
+        await new Promise(resolve => setTimeout(resolve, 3000))
+        return hdiUtil(addLogLevel(createArgs, true))
+      }
+      throw e
+    })
   return tempDmg
 }
 
-function addLogLevel(args: Array<string>): Array<string> {
-  args.push(process.env.DEBUG_DMG === "true" ? "-verbose" : "-quiet")
+function addLogLevel(args: Array<string>, isVerbose = process.env.DEBUG_DMG === "true"): Array<string> {
+  args.push(isVerbose ? "-verbose" : "-quiet")
   return args
 }
 

diff --git a/packages/dmg-builder/src/dmgUtil.ts b/packages/dmg-builder/src/dmgUtil.ts
@@ -38,7 +38,7 @@
     if (hdiutilTransientExitCodes.has(e.code)) {
       // Delay then force unmount with verbose output
       await new Promise(resolve => setTimeout(resolve, 3000))
-      return hdiUtil(["detach", "--force", name])
+      return hdiUtil(["detach", "-force", name])
     }
     throw e
   })

diff --git a/test/src/helpers/updaterTestUtil.ts b/test/src/helpers/updaterTestUtil.ts
@@ -1,7 +1,7 @@
 import { NodeHttpExecutor, serializeToYaml, TmpDir } from "builder-util"
 import { AllPublishOptions, DownloadOptions } from "builder-util-runtime"
 import { AppUpdater, MacUpdater, NsisUpdater } from "electron-updater"
-import { TestOnlyUpdaterOptions } from "electron-updater/out/AppUpdater"
+import { NoOpLogger, TestOnlyUpdaterOptions } from "electron-updater/out/AppUpdater"
 import { outputFile, writeFile } from "fs-extra"
 import * as path from "path"
 import { assertThat } from "./fileAssert"
@@ -75,7 +75,7 @@ export function tuneTestUpdater(updater: AppUpdater, options?: TestOnlyUpdaterOp
     platform: "win32",
     ...options,
   }
-  updater.logger = console
+  updater.logger = new NoOpLogger()
 }
 
 export function trackEvents(updater: AppUpdater) {

diff --git a/test/src/updater/differentialUpdateTest.ts b/test/src/updater/differentialUpdateTest.ts
@@ -211,7 +211,6 @@ async function testBlockMap(expect: ExpectStatic, oldDir: string, newDir: string
         platform: platform.nodeName as any,
         isUseDifferentialDownload: true,
       })
-      updater.logger = console
 
       const currentUpdaterCacheDirName = (await updater.configOnDisk.value).updaterCacheDirName
       if (currentUpdaterCacheDirName == null) {