tsconfig.json

{
  "compilerOptions": {
    "baseUrl": "./packages",
    "paths": {
      "devextreme-angular": [
        "devextreme-angular/npm/dist"
      ],
      "devextreme-angular/*": [
        "devextreme-angular/npm/dist/*"
      ],
      "devextreme-react": [
        "devextreme-react/src"
      ],
      "devextreme-react/*": [
        "devextreme-react/src/*"
      ],
      "devextreme-vue": [
        "devextreme-vue/src"
      ],
      "devextreme-vue/*": [
        "devextreme-vue/src/*"
      ]
    },
    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true,
    "target": "es5",
    "module": "commonjs",
    "jsx": "react",
    "noEmitOnError": true,
    "declaration": true,
    "forceConsistentCasingInFileNames": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitAny": false,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "strictNullChecks": true,
    "lib": [
      "esnext",
      "es2015",
      "es2015.iterable",
      "dom"
    ]
  },
  "exclude": [
    "node_modules",
    "dist"
  ]
}