title: identifier "aa_bb" is not in camel case
body: <p><a href="https://i.stack.imgur.com/nmlct.jpg" rel="noreferrer">enter image description here</a></p>
  
  <p>I try to add the rule in the .eslintrc, But it does not work.</p>
  
  <p>Please help.</p>
  
  <p>I get 'aa_bb' from the api. I add the rule like the doc, and some ways. </p>
  
  <p>It is still doesn't work. My classmate tell me to delete the eslint, he </p>
  
  <p>think that is superfluous.</p>
  
  <p>oh, i can't add more detail......</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>{
      "parser": "babel-eslint",
      "extends": "airbnb",
      "plugins": ["compat"],
      "env": {
          "browser": true,
          "node": true,
          "es6": true,
          "mocha": true,
          "jest": true,
          "jasmine": true
      },
      "rules": {
          "generator-star-spacing": [0],
          "consistent-return": [0],
          "react/forbid-prop-types": [0],
          "react/jsx-filename-extension": [1, { "extensions": [".js"] }],
          "global-require": [1],
          "import/prefer-default-export": [0],
          "react/jsx-no-bind": [0],
          "react/prop-types": [0],
          "react/prefer-stateless-function": [0],
          "react/jsx-wrap-multilines": ["error", {
              "declaration": "parens-new-line",
              "assignment": "parens-new-line",
              "return": "parens-new-line",
              "arrow": "parens-new-line",
              "condition": "parens-new-line",
              "logical": "parens-new-line",
              "prop": "ignore"
          }],
          "no-else-return": [0],
          "no-script-url": 0,
          "no-restricted-syntax": [0],
          "import/no-extraneous-dependencies": [0],
          "no-use-before-define": [0],
          "jsx-a11y/no-static-element-interactions": [0],
          "jsx-a11y/no-noninteractive-element-interactions": [0],
          "jsx-a11y/click-events-have-key-events": [0],
          "jsx-a11y/anchor-is-valid": [0],
          "no-nested-ternary": [0],
          "arrow-body-style": [0],
          "import/extensions": [0],
          "no-bitwise": [0],
          "no-cond-assign": [0],
          "import/no-unresolved": [0],
          "camelcase": [
            "error", {
              "properties": "never"
            }
          ],
          "comma-dangle": ["error", {
              "arrays": "always-multiline",
              "objects": "always-multiline",
              "imports": "always-multiline",
              "exports": "always-multiline",
              "functions": "ignore"
          }],
          "object-curly-newline": [0],
          "function-paren-newline": [0],
          "no-restricted-globals": [0],
          "require-yield": [1],
          "compat/compat": "error",
        // "linebreak-style": ["error", "windows"]
      },
      "parserOptions": {
          "ecmaFeatures": {
              "experimentalObjectRestSpread": true
          }
      },
      "settings": {
          "polyfills": ["fetch", "promises"]
      }
  }</code></pre>
  </div>
  </div>
  </p>