Failed to build ionic PWA with --prod flag

Describe the bug The package worked great in development but when build for release. Error occurred:

$ npm run ionic:build --prod

pj5@0.0.1 ionic:build /Users/user1/Documents/git/tomorrow/web/myapp-zqr ionic-app-scripts build

[18:50:42] ionic-app-scripts 3.1.2 [18:50:42] build prod started … [18:50:42] clean started … [18:50:42] clean finished in 9 ms [18:50:42] copy started … [18:50:42] deeplinks started … [18:50:43] deeplinks finished in 268 ms [18:50:43] ngc started … [18:50:59] ngc finished in 16.25 s [18:50:59] preprocess started … [18:50:59] preprocess finished in less than 1 ms [18:50:59] webpack started … [18:50:59] copy finished in 16.86 s [18:52:48] ionic-app-script task: “build” [18:52:48] Error: ./node_modules/rxjs/observable/BoundCallbackObservable.js Module build failed: TypeError: Cannot read property ‘type’ of undefined at Object.getEffectiveTypeAnnotationNode (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:9341:18) at assignContextualParameterTypes (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:41652:25) at checkFunctionExpressionOrObjectLiteralMethod (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:41948:29) at checkExpressionWorker (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:42959:28) at checkExpression (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:42898:42) at checkExpressionCached (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:42779:38) at checkReturnStatement (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:45418:54) at checkSourceElement (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:46763:28) at Object.forEach (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:1506:30) at checkBlock (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:44563:16) @ ./node_modules/rxjs/observable/bindCallback.js 2:32-68 @ ./node_modules/rxjs/add/observable/bindCallback.js @ ./node_modules/rxjs/Rx.js @ ./node_modules/@zxing/ngx-scanner/esm5/zxing-ngx-scanner.js @ ./src/pages/scan/scan.module.ngfactory.js @ ./src lazy @ ./node_modules/ionic-angular/util/ng-module-loader.js @ ./src/app/app.module.ngfactory.js @ ./src/app/main.ts,./node_modules/rxjs/observable/BoundNodeCallbackObservable.js Module build failed: TypeError: Cannot read property ‘type’ of undefined at Object.getEffectiveTypeAnnotationNode (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:9341:18) at assignContextualParameterTypes (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:41652:25) at checkFunctionExpressionOrObjectLiteralMethod (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:41948:29) at checkExpressionWorker (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:42959:28) at checkExpression (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:42898:42) at checkExpressionCached (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:42779:38) at checkReturnStatement (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:45418:54) at checkSourceElement (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:46763:28) at Object.forEach (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:1506:30) at checkBlock (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:44563:16) @ ./node_modules/rxjs/observable/bindNodeCallback.js 2:36-76 @ ./node_modules/rxjs/add/observable/bindNodeCallback.js @ ./node_modules/rxjs/Rx.js @ ./node_modules/@zxing/ngx-scanner/esm5/zxing-ngx-scanner.js @ ./src/pages/scan/scan.module.ngfactory.js @ ./src lazy @ ./node_modules/ionic-angular/util/ng-module-loader.js @ ./src/app/app.module.ngfactory.js @ ./src/app/main.ts Error: ./node_modules/rxjs/observable/BoundCallbackObservable.js Module build failed: TypeError: Cannot read property ‘type’ of undefined at Object.getEffectiveTypeAnnotationNode (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:9341:18) at assignContextualParameterTypes (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:41652:25) at checkFunctionExpressionOrObjectLiteralMethod (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:41948:29) at checkExpressionWorker (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:42959:28) at checkExpression (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:42898:42) at checkExpressionCached (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:42779:38) at checkReturnStatement (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:45418:54) at checkSourceElement (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:46763:28) at Object.forEach (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:1506:30) at checkBlock (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:44563:16) @ ./node_modules/rxjs/observable/bindCallback.js 2:32-68 @ ./node_modules/rxjs/add/observable/bindCallback.js @ ./node_modules/rxjs/Rx.js @ ./node_modules/@zxing/ngx-scanner/esm5/zxing-ngx-scanner.js @ ./src/pages/scan/scan.module.ngfactory.js @ ./src lazy @ ./node_modules/ionic-angular/util/ng-module-loader.js @ ./src/app/app.module.ngfactory.js @ ./src/app/main.ts,./node_modules/rxjs/observable/BoundNodeCallbackObservable.js Module build failed: TypeError: Cannot read property ‘type’ of undefined at Object.getEffectiveTypeAnnotationNode (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:9341:18) at assignContextualParameterTypes (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:41652:25) at checkFunctionExpressionOrObjectLiteralMethod (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:41948:29) at checkExpressionWorker (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:42959:28) at checkExpression (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:42898:42) at checkExpressionCached (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:42779:38) at checkReturnStatement (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:45418:54) at checkSourceElement (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:46763:28) at Object.forEach (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:1506:30) at checkBlock (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/typescript/lib/typescript.js:44563:16) @ ./node_modules/rxjs/observable/bindNodeCallback.js 2:36-76 @ ./node_modules/rxjs/add/observable/bindNodeCallback.js @ ./node_modules/rxjs/Rx.js @ ./node_modules/@zxing/ngx-scanner/esm5/zxing-ngx-scanner.js @ ./src/pages/scan/scan.module.ngfactory.js @ ./src lazy @ ./node_modules/ionic-angular/util/ng-module-loader.js @ ./src/app/app.module.ngfactory.js @ ./src/app/main.ts at new BuildError (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/@ionic/app-scripts/dist/util/errors.js:16:28) at callback (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/@ionic/app-scripts/dist/webpack.js:121:28) at emitRecords.err (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/webpack/lib/Compiler.js:269:13) at Compiler.emitRecords (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/webpack/lib/Compiler.js:375:38) at emitAssets.err (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/webpack/lib/Compiler.js:262:10) at applyPluginsAsyncSeries1.err (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/webpack/lib/Compiler.js:368:12) at next (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/tapable/lib/Tapable.js:218:11) at Compiler.compiler.plugin (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/webpack/lib/performance/SizeLimitsPlugin.js:99:4) at Compiler.applyPluginsAsyncSeries1 (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/tapable/lib/Tapable.js:222:13) at Compiler.afterEmit (/Users/user1/Documents/git/tomorrow/web/myapp-zqr/node_modules/webpack/lib/Compiler.js:365:9) npm ERR! code ELIFECYCLE npm ERR! errno 1 npm ERR! pj5@0.0.1 ionic:build: ionic-app-scripts build npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the pj5@0.0.1 ionic:build script. npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in: npm ERR! /Users/gf/.npm/_logs/2018-09-11T16_52_48_173Z-debug.log

My version: Angular CLI: 6.0.7 Node: 8.11.1 OS: darwin x64 Angular: 5.0.1 … common, compiler, compiler-cli, core, forms, http … platform-browser, platform-browser-dynamic

Package Version

@angular-devkit/architect 0.6.7 (cli-only) @angular-devkit/build-optimizer 0.0.32 @angular-devkit/core 0.6.7 (cli-only) @angular-devkit/schematics 0.6.7 (cli-only) @schematics/angular 0.6.7 (cli-only) @schematics/update 0.6.7 (cli-only) rxjs 5.5.2 typescript 2.4.2 webpack 3.6.0

Additional context Without --prod, it works.

[lolaswift]

@odahcam Great! Really appreciated!!. Please keep up the great work. Can you please close the issue?

[lock[bot]]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.