fix: (#5685) check if icons subdir exists in build resources, otherwi…

…se don't prepend it to fallback sources (#5686)

packages/app-builder-lib/src/targets/LinuxTargetHelper.ts

@@ -4,6 +4,7 @@ import { Lazy } from "lazy-val"
 import { LinuxTargetSpecificOptions } from ".."
 import { LinuxPackager } from "../linuxPackager"
 import { IconInfo } from "../platformPackager"
+import { join } from "path"
 
 export const installPrefix = "/opt"
 
@@ -56,7 +57,11 @@ export class LinuxTargetHelper {
     const sources = [platformSpecificBuildOptions.icon, config.mac?.icon ?? config.icon].filter(str => !!str) as string[]
 
     // If no explicit sources are defined, fallback to buildResources directory, then default framework icon
-    const fallbackSources = [config.directories?.buildResources, ...asArray(packager.getDefaultFrameworkIcon())].filter(async filepath => filepath && (await exists(filepath))) as string[]
+    let fallbackSources = [...asArray(packager.getDefaultFrameworkIcon())]
+    const buildResources = config.directories?.buildResources
+    if (buildResources && (await exists(join(buildResources, "icons")))) {
+      fallbackSources = [buildResources, ...fallbackSources]
+    }
 
     // need to put here and not as default because need to resolve image size
     const result = await packager.resolveIcon(sources, fallbackSources, "set")

test/snapshots/BuildTest.js.snap

@@ -1138,7 +1138,7 @@ Object {
               "size": 1069,
             },
             "abi_registry.json": Object {
-              "size": 1742,
+              "size": 1732,
             },
             "index.js": Object {
               "size": 6099,