tsconfig.json

{
  "exclude": ["node_modules/**"],
  "compilerOptions": {
    "forceConsistentCasingInFileNames": true,
    /* Basic Options */
    "incremental": false /* Enable incremental compilation */,
    "target": "es5" /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */,
    "module": "commonjs" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */,
    "lib": [
      "es6",
      "dom",
      "es2019"
    ] /* Specify library files to be included in the compilation. */,
    "allowJs": false /* Allow javascript files to be compiled. */,
    "jsx": "react" /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */,
    "sourceMap": true /* Generates corresponding '.map' file. */,
    "removeComments": true /* Do not emit comments to output. */,
    "noEmit": false /* Do not emit outputs. */,
    "importHelpers": true /* Import emit helpers from 'tslib'. */,
    "downlevelIteration": true /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */,

    /* Strict Type-Checking Options */
    "strict": true /* Enable all strict type-checking options. */,
    "noImplicitAny": false /* Raise error on expressions and declarations with an implied 'any' type. */,
    "strictNullChecks": true /* Enable strict null checks. */,
    "noImplicitThis": false /* Raise error on 'this' expressions with an implied 'any' type. */,
    "alwaysStrict": true /* Parse in strict mode and emit "use strict" for each source file. */,

    /* Additional Checks */
    "noUnusedLocals": true /* Report errors on unused locals. */,
    "noUnusedParameters": true /* Report errors on unused parameters. */,
    "noImplicitReturns": false /* Report error when not all code paths in function return a value. */,
    "noFallthroughCasesInSwitch": true /* Report errors for fallthrough cases in switch statement. */,

    /* Module Resolution Options */
    "moduleResolution": "node" /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */,
    "allowSyntheticDefaultImports": true /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */,

    /* Experimental Options */
    "paths": {
      "tslib": ["./node_modules/tslib/tslib.d.ts"]
    },
    "baseUrl": ".",

    /* Debugging Options */
    "traceResolution": false /* Report module resolution log messages. */,
    "listEmittedFiles": false /* Print names of generated files part of the compilation. */,
    "listFiles": false /* Print names of files part of the compilation. */,
    "pretty": true /* Stylize errors and messages using color and context. */,
    "skipLibCheck": true
  }
}