Cannot read property 'module' of undefined

Type of Issue

[ ] Bug Report
[ ] Feature Request

Description

I can not found what is cause of my problem BUILD ERROR

Cannot read property 'module' of undefined
TypeError: Cannot read property 'module' of undefined
    at MetadataBundler.convertSymbol (C:\Users\azizkhani\git\ng-baharan\node_modules\@angular\compiler-cli\src\metadata\bundler.js:312:61)
    at createReference (C:\Users\azizkhani\git\ng-baharan\node_modules\@angular\compiler-cli\src\metadata\bundler.js:438:27)
    at MetadataBundler.convertReference (C:\Users\azizkhani\git\ng-baharan\node_modules\@angular\compiler-cli\src\metadata\bundler.js:486:28)
    at MetadataBundler.convertExpression (C:\Users\azizkhani\git\ng-baharan\node_modules\@angular\compiler-cli\src\metadata\bundler.js:415:37)
    at MetadataBundler.convertValue (C:\Users\azizkhani\git\ng-baharan\node_modules\@angular\compiler-cli\src\metadata\bundler.js:396:29)
    at C:\Users\azizkhani\git\ng-baharan\node_modules\@angular\compiler-cli\src\metadata\bundler.js:399:62
    at Array.map (<anonymous>)
    at MetadataBundler.convertValue (C:\Users\azizkhani\git\ng-baharan\node_modules\@angular\compiler-cli\src\metadata\bundler.js:399:30)
    at MetadataBundler.convertValue (C:\Users\azizkhani\git\ng-baharan\node_modules\@angular\compiler-cli\src\metadata\bundler.js:405:36)
    at C:\Users\azizkhani\git\ng-baharan\node_modules\@angular\compiler-cli\src\metadata\bundler.js:399:62

Version Information

"@angular-devkit/build-angular": "~0.11.0",
    "@angular/cli": "~7.1.3",
    "@angular/compiler-cli": "~7.1.0",
    "@angular/language-service": "~7.1.0",
    "@types/jasmine": "~2.8.8",
    "@types/jasminewd2": "~2.0.3",
    "@types/jquery": "^3.3.29",
    "@types/node": "~8.9.4",
    "@types/socket.io": "^2.1.2",
    "codelyzer": "~4.5.0",
    "jasmine-core": "~2.99.1",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~3.1.1",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "~2.0.1",
    "karma-jasmine": "~1.1.2",
    "karma-jasmine-html-reporter": "^0.2.2",
    "ng-packagr": "^4.4.5",
    "protractor": "~5.4.0",
    "ts-node": "~7.0.0",
    "tsickle": "^0.34.0",
    "tslint": "~5.11.0",
    "typescript": "~3.1.6"

Please include all version numbers that might be relevant, e.g. third-party libraries this is my library https://github.com/azizkhani/ng-library

[azizkhani]

Why project run and build correctly with angular but ng-packagr can not build that. How can i found ,which part of my configuration make this exception? Error is very general and dose not show which module have problem

[jmorenovalde]

I had the same problem. The problem is that ng-packer didn’t work well with barrel routes.

For example:

import { ElementService } from 'path_barrel';

If you change the barrel for the real path work well.

import { ElementService } from 'path_element/element.service';