fix: make install-app-deps also handle skip build flag

Closes #797

src/install-app-deps.ts

@@ -30,7 +30,7 @@ async function main() {
     throw new Error("install-app-deps is only useful for two package.json structure")
   }
 
-  await installDependencies(results[0], results[1], args.arch)
+  await installDependencies(results[0], results[1], args.arch, devMetadata.build.npmSkipBuildFromSource !== true)
 }
 
 main()

src/packager.ts

@@ -235,8 +235,8 @@ export class Packager implements BuildInfo {
         log("Skip app dependencies rebuild because npmRebuild is set to false")
       }
       else if (platform.nodeName === process.platform) {
-        let doSourceBuild = !(this.devMetadata.build.npmSkipBuildFromSource === true)
-        await installDependencies(this.appDir, this.electronVersion, Arch[arch], (await statOrNull(path.join(this.appDir, "node_modules"))) == null ? "install" : "rebuild", doSourceBuild)
+        const forceBuildFromSource = this.devMetadata.build.npmSkipBuildFromSource !== true
+        await installDependencies(this.appDir, this.electronVersion, Arch[arch], forceBuildFromSource, (await statOrNull(path.join(this.appDir, "node_modules"))) == null ? "install" : "rebuild")
       }
       else {
         log("Skip app dependencies rebuild because platform is different")

src/util/util.ts

@@ -16,8 +16,8 @@ export const debug7z = debugFactory("electron-builder:7z")
 
 const DEFAULT_APP_DIR_NAMES = ["app", "www"]
 
-export function installDependencies(appDir: string, electronVersion: string, arch: string = process.arch, command: string = "install", fromSource: boolean = true): BluebirdPromise<any> {
-  return task(`${(command === "install" ? "Installing" : "Rebuilding")} app dependencies for arch ${arch} to ${appDir}`, spawnNpmProduction(command, appDir, getGypEnv(electronVersion, arch), fromSource))
+export function installDependencies(appDir: string, electronVersion: string, arch: string = process.arch, forceBuildFromSource: boolean, command: string = "install"): BluebirdPromise<any> {
+  return task(`${(command === "install" ? "Installing" : "Rebuilding")} app dependencies for arch ${arch} to ${appDir}`, spawnNpmProduction(command, appDir, forceBuildFromSource, getGypEnv(electronVersion, arch)))
 }
 
 export function getGypEnv(electronVersion: string, arch: string): any {
@@ -32,17 +32,17 @@ export function getGypEnv(electronVersion: string, arch: string): any {
   })
 }
 
-export function spawnNpmProduction(command: string, appDir: string, env?: any, forceBuild: boolean = true): BluebirdPromise<any> {
+export function spawnNpmProduction(command: string, appDir: string, forceBuildFromSource: boolean, env?: any): BluebirdPromise<any> {
   let npmExecPath = process.env.npm_execpath || process.env.NPM_CLI_JS
-  let npmExecArgs = [command, "--production", "--cache-min", "999999999"]
+  const npmExecArgs = [command, "--production", "--cache-min", "999999999"]
   if (npmExecPath == null) {
     npmExecPath = process.platform === "win32" ? "npm.cmd" : "npm"
   }
   else {
     npmExecArgs.unshift(npmExecPath)
     npmExecPath = process.env.npm_node_execpath || process.env.NODE_EXE || "node"
   }
-  if (forceBuild) {
+  if (forceBuildFromSource) {
     npmExecArgs.push("--build-from-source")
   }
 

test/src/helpers/packTester.ts

@@ -95,7 +95,7 @@ export async function assertPack(fixtureName: string, packagerOptions: PackagerO
     if (projectDirCreated != null) {
       await projectDirCreated(projectDir)
       if (checkOptions.npmInstallBefore) {
-        await spawnNpmProduction("install", projectDir)
+        await spawnNpmProduction("install", projectDir, false)
       }
     }