ESLint configuration extending Airbnb's configuration.

.eslintignore

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# Node
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node_modules

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# Compiled Directories & Files
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dist

.eslintrc.js

module.exports = {
  root: true,
  env: {
    browser: true,
  },
  extends: [
    // @see https://github.com/airbnb/javascript/tree/master/packages/eslint-config-airbnb-base
    "airbnb-base", 
  ],
  rules: {
    // Disallow the use of console.
    // @see https://eslint.org/docs/rules/no-console
    "no-console": process.env.NODE_ENV === "production" ? "warn" : "off",

    // Disallow the use of debugger.
    // @see https://eslint.org/docs/rules/no-debugger
    "no-debugger": process.env.NODE_ENV === "production" ? "warn" : "off",

    // /////////////////////////////////////////////////////////////////////////
    // `airbnb-base`: Overwrites
    // @see https://github.com/vuejs/eslint-config-airbnb,
    //   https://github.com/airbnb/javascript
    // /////////////////////////////////////////////////////////////////////////

    // Disable `import/no-unresolved`, a peer dependency of `airbnb-base`.
    // @see https://github.com/benmosher/eslint-plugin-import/blob/master/docs/rules/no-unresolved.md
    "import/no-unresolved": "off",

    // Enforce maximum line length.
    // @see https://eslint.org/docs/rules/max-len
    "max-len": ["error", 120, 2, {
      ignoreUrls: true,
      ignoreComments: false,
      ignoreRegExpLiterals: true,
      ignoreStrings: true,
      ignoreTemplateLiterals: true,
    }],

    // Enforce the consistent use of either backticks, double, or single quotes.
    // @see https://eslint.org/docs/rules/quotes,
    //   https://github.com/airbnb/javascript/blob/master/packages/eslint-config-airbnb-base/rules/style.js
    quotes: ["error", "double"],
  },
};

package.json

{
  "private": true,
  "scripts": {
    "lint": "eslint source --ext js --fix",
  },
  "dependencies": {
  },
  "devDependencies": {
    "eslint": "^7.9.0",
    "eslint-config-airbnb-base": "^14.2.0",
    "eslint-plugin-import": "^2.22.0",
  }
}