tsconfig.json

{
    "compilerOptions": {
        "allowJs": true,
        "target": "es2018",
        "module": "commonjs",
        "moduleResolution": "node",
        "sourceMap": true,
        "emitDecoratorMetadata": true,
        "experimentalDecorators": true,
        "removeComments": false,
        "noImplicitAny": false,
        "skipLibCheck": true,
        "suppressImplicitAnyIndexErrors": true,
        "outDir": "build/www/app",
        "lib": ["es7", "dom"],
        "typeRoots": [
            "node_modules/@types"
        ],
        "baseUrl": "./",
        "paths": {
            "@angular/*": [
                "../node_modules/@angular/*"
            ],
            "app/*": ["src/main/webapp/app/*"]
        },
        "importHelpers": true
    },
    "include": [
        "src/main/webapp/app"
    ],
    "exclude": [
        "node_modules",
        "src/test"
    ]
}