.eslintrc.json

{
    "root": true,
    "parserOptions":  {
        "parser": "babel-eslint",
        "sourceType": "module"
    },
    "env": {
        "browser": true
    },
    "plugins": [
        "mocha"
    ],
    "extends": [
        "plugin:mocha/recommended",
        "airbnb-base"
    ],
    "ignorePatterns": ["**", "!src", "!src/**"],
    "rules": {
        "max-len": [2, {
            "code": 125,
            "tabWidth": 4,
            "ignoreUrls": true,
            "ignoreStrings": true,
            "ignoreTemplateLiterals": true
        }],
        "import/extensions": ["error", "always", {
            "js": "never",
            "vue": "never"
        }],
        "indent": [2, 4, {
            "SwitchCase": 1
        }],
        "no-console": ["error", {
            "allow": ["warn", "error", "info", "debug"]
        }],
        "no-param-reassign": ["error", {
            "props": false
        }],
        "no-mixed-operators": ["error", {
            "allowSamePrecedence": true
        }],
        "no-return-assign": ["error", "except-parens"],
        "import/no-cycle": 0,
        "prefer-destructuring": ["error", { "object": false, "array": false }],
        "lines-between-class-members": ["error", "always", { "exceptAfterSingleLine": true }],
        "no-unused-expressions": ["error", {
            "allowShortCircuit": true,
            "allowTernary": true
        }],
        "prefer-arrow-callback": 0,
        "mocha/prefer-arrow-callback": 2
    },
    "globals": {
        "window": false,
        "initGdalJs": true,
        "chai": false
    }
}