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The tsconfig.json file specifies:

• the root directory
• and the compiler option (configuration properties)

Example

{
    "compilerOptions": {
        "outDir": "./dist/",
        "sourceMap": true,
        "noImplicitAny": true,
        "module": "commonjs",
        "target": "es6",
        "jsx": "react",
        "allowJs": true
    }
}

where:

• compilerOptions are the compiler option where:
  • module defines in which module module typescript script are written (ie require for CommonJs or import for es6)

Documentation

• https://www.typescriptlang.org/docs/handbook/tsconfig-json.html