title: how Ignore TS Errors TS2339: “property does not exist on value of type” with eslint
body: <p>My React js project failed and I got many times this error:</p>
  
  <blockquote>
    <p>The TS2339: property 'x' does not exist on value of type 'y'</p>
  </blockquote>
  
  <p>my tsconfig.json file : </p>
  
  <pre><code>{
  "compilerOptions": {
  "jsx": "react",
  "target": "es6",
  "module": "esnext",
  "moduleResolution": "node",
  "sourceMap": true,
  "emitDecoratorMetadata": true,
  "experimentalDecorators": true,
  "removeComments": false,
  "noImplicitAny": false,
  "suppressImplicitAnyIndexErrors": true,
  "outDir": "target/classes/static/app",
  "lib": ["es2015", "es2017", "dom"],
  "types": ["webpack-env", "jest"],
  "allowJs": true,
  "checkJs": false,
  "baseUrl": "./",
  "paths": {
    "app/*": ["src/main/webapp/app/*"]
  },
  "importHelpers": true,
  "esModuleInterop": true,
  "allowSyntheticDefaultImports": true
    },
    "include": ["src/main/webapp/app", "src/test/javascript/spec"],
    "exclude": ["node_modules"]
  }
  </code></pre>
  
  <p>How fix it?</p>