tsconfig-build.json

{
    "compilerOptions": {
        "rootDir": ".",
        "baseUrl": ".",
        "paths": {
            "@angular/*": ["../../node_modules/@angular/*"],
            "@rxjs/*": ["../../node_modules/rxjs/*"]
        },
        "outDir": "../",
        "declaration": true,
        "strict": true,
        "strictPropertyInitialization": false,
        "moduleResolution": "node",
        "module": "es2015",
        "target": "es2015",
        "lib": ["es2015", "dom"],
        "skipLibCheck": true,
        "types": ["node"],
        "experimentalDecorators": true,
        "emitDecoratorMetadata": true,
        "sourceMap": true,
        "inlineSources": true,
        "importHelpers": true
    },
    "files": ["public_api.ts", "../../node_modules/zone.js/dist/zone.js.d.ts", "typings.d.ts"],
    "angularCompilerOptions": {
        "enableResourceInlining": true,
        "skipTemplateCodegen": true,
        "annotateForClosureCompiler": true,
        "strictMetadataEmit": true,
        "flatModuleOutFile": "angular-auth-oidc-client.js",
        "flatModuleId": "angular-auth-oidc-client"
    }
}