Import JSON file in TypeScript

In this example, I will show you a simple way to import JSON files in TypeScript code. It requires just two simple steps. The first is to change the tsconfig.json file by adding the line:

, "resolveJsonModule": true

in “compilerOptions” section.

{
  "compilerOptions":
  {
    ...
    , "resolveJsonModule": true
    ...
  }
  ...
}

After that, you have to import the file into your ts-file.

import * as config from './config.json';

Now we are ready. We can use it the following way:

import * as config from './config.json';
interface AppConfig{
    prop: string;
}

class App{
    ...
    public configuration: AppConfig;
    private constructor(){
        this.configuration = config as AppConfig; //just for example
    }
    ...
}