We need to inform Visual Studio about the compiler options required to compile TypeScript for our application to consume when it is running. With the help of a TypeScript configuration file, we can configure the compiler options and other details using the following steps:

1. Let's add TypeScript Configuration File by right-clicking on the project and navigating to Add | New Item in the menu, leaving the filename to default, as shown in this screenshot:

A file named tsconfig.json will be added to the project root directory.

2. Replace the content of the TypeScript configuration file with the following configuration:

      {   
            "compilerOptions": 
            {   
            "diagnostics": true,   
            "emitDecoratorMetadata":   true,   
            "experimentalDecorators":   true,   
            "lib": ["es2015", "dom"],   
            "listFiles": true,   
            "module": "commonjs",   
            "moduleResolution": "node",   
            "noImplicitAny": true,   
            "outDir": "wwwroot",   
            "removeComments": false,   
            "rootDir": "wwwroot",   
            "sourceMap": true,   
            "suppressImplicitAnyIndexErrors":   true,   
            "target": "es5"   
            },   
            "exclude": [   
            "node_modules"   
          ]   
      }