tsconfig.json

{
  "compilerOptions": {
    /* Visit https://aka.ms/tsconfig to read more about this file */

    /* Projects */
    // "incremental": true,                              /* Save .tsbuildinfo files to allow for incremental compilation of projects. */
    // "composite": true,                                /* Enable constraints that allow a TypeScript project to be used with project references. */
    // "tsBuildInfoFile": "./.tsbuildinfo",              /* Specify the path to .tsbuildinfo incremental compilation file. */
    // "disableSourceOfProjectReferenceRedirect": true,  /* Disable preferring source files instead of declaration files when referencing composite projects. */
    // "disableSolutionSearching": true,                 /* Opt a project out of multi-project reference checking when editing. */
    // "disableReferencedProjectLoad": true,             /* Reduce the number of projects loaded automatically by TypeScript. */

    /* Language and Environment */
    "target": "es2016",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
    "lib": ["es6"],                                        /* Specify a set of bundled library declaration files that describe the target runtime environment. */

    /* Modules */
    "module": "commonjs",                                /* Specify what module code is generated. */
    "rootDir": "src",                                    /* Specify the root folder within your source files. */
    "resolveJsonModule": true,                        /* Enable importing .json files. */

    /* JavaScript Support */
    "allowJs": true,                                  /* Allow JavaScript files to be a part of your program. Use the 'checkJS' option to get errors from these files. */
    /* Emit */
    "outDir": "build",                                    /* Specify an output folder for all emitted files. */

    /* Interop Constraints */
    "esModuleInterop": true,                             /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */
    "forceConsistentCasingInFileNames": true,            /* Ensure that casing is correct in imports. */

    /* Type Checking */
    "strict": true,                                      /* Enable all strict type-checking options. */
    "strictPropertyInitialization": false,
    "noImplicitAny": true,                            /* Enable error reporting for expressions and declarations with an implied 'any' type. */

    /* Completeness */
    "skipLibCheck": true                                 /* Skip type checking all .d.ts files. */
  },
}