.eslintrc.json

{
    "env": {
        "browser": true,
        "es2021": true
    },
    "extends": [
        "eslint:recommended",
        "@salesforce/eslint-config-lwc/recommended",
        "@salesforce/eslint-config-lwc/i18n",
        "@locker/eslint-config-locker/recommended",
        "plugin:@salesforce/eslint-plugin-aura/recommended",
        "plugin:@salesforce/eslint-plugin-aura/locker"
    ],
    "parser": "@babel/eslint-parser",
    "parserOptions": {
        "ecmaVersion": 12,
        "sourceType": "module",
        "requireConfigFile": false,
        "babelOptions": {
            "parserOpts": {
                "plugins": ["classProperties", ["decorators", { "decoratorsBeforeExport": false }]]
            }
        }
    },
    "rules": {
        "no-console": "off"
    },
    "plugins": ["@lwc/eslint-plugin-lwc", "@salesforce/eslint-plugin-aura"],
    // Based on this discussion https://github.com/forcedotcom/eslint-plugin-aura/issues/8 which resulted in this file
    // https://github.com/forcedotcom/salesforcedx-templates/blob/main/src/templates/project/aura.eslintrc.json
    "overrides": [
        {
            "files": ["**/aura/**"],
            "rules": { "vars-on-top": "off", "no-unused-expressions": "off" }
        },
        // Based on this file https://github.com/forcedotcom/salesforcedx-templates/blob/main/src/templates/project/lwc.eslintrc.json
        {
            "files": ["*.test.js"],
            "rules": {
                "@lwc/lwc/no-unexpected-wire-adapter-usages": "off"
            },
            "env": {
                "node": true
            }
        }
    ]
}