.eslintrc

{
    "root": true,
    "plugins": [
        "eslint-plugin",
        "import",
    ],
    "extends": [
        "eslint:recommended",
        "plugin:eslint-plugin/recommended",
        "plugin:import/recommended",
    ],
    "env": {
        "node": true,
        "es6": true,
    },
    "parserOptions": {
        "sourceType": "module",
        "ecmaVersion": 2020,
    },
    "rules": {
        "comma-dangle": ["error", {
            "arrays": "always-multiline",
            "objects": "always-multiline",
            "imports": "always-multiline",
            "exports": "always-multiline",
            "functions": "always-multiline",
        }],
        "comma-style": [2, "last"],
        "curly": [2, "multi-line"],
        "eol-last": [2, "always"],
        "eqeqeq": [2, "allow-null"],
        "func-call-spacing": 2,
        "indent": [2, 2],
        "keyword-spacing": ["error", {
          "before": true,
          "after": true,
          "overrides": {
            "return": { "after": true },
            "throw": { "after": true },
            "case": { "after": true }
          }
        }],
        "max-len": 0,
        "no-cond-assign": [2, "always"],
        "no-return-assign": [2, "always"],
        "no-var": 2,
        "object-curly-spacing": [2, "always"],
        "object-shorthand": ["error", "always", {
            "ignoreConstructors": false,
            "avoidQuotes": true,
        }],
        "one-var": [2, "never"],
        "prefer-const": 2,
        "quotes": [2, "single", {
            "allowTemplateLiterals": true,
            "avoidEscape": true,
        }],
        "semi": [2, "always"],
        "space-before-function-paren": ["error", {
            "anonymous": "always",
            "named": "never",
            "asyncArrow": "always",
        }],

        "eslint-plugin/consistent-output": [
            "error",
            "always",
        ],
        "eslint-plugin/meta-property-ordering": "error",
        "eslint-plugin/no-deprecated-context-methods": "error",
        "eslint-plugin/no-deprecated-report-api": "off",
        "eslint-plugin/prefer-replace-text": "error",
        "eslint-plugin/report-message-format": "error",
        "eslint-plugin/require-meta-schema": "error",
        "eslint-plugin/require-meta-type": "error",

        // dog fooding
        "import/no-extraneous-dependencies": "error",
        "import/unambiguous": "off",
    },

    "settings": {
        "import/resolver": {
            "node": {
                "paths": [
                    "src",
                ],
            },
        },
    },

    "overrides": [
        {
            "files": "scripts/**",
            "rules": {
                "no-console": "off",
            },
        },
        {
            "files": "resolvers/**",
            "env": {
                "es6": false,
            },
        },
        {
            "files": [
                "resolvers/*/test/**/*",
            ],
            "env": {
                "mocha": true,
                "es6": false
            },
        },
        {
            "files": "utils/**",
            "parserOptions": {
                "ecmaVersion": 6,
            },
            "rules": {
                "comma-dangle": ["error", {
                    "arrays": "always-multiline",
                    "objects": "always-multiline",
                    "imports": "always-multiline",
                    "exports": "always-multiline",
                    "functions": "never"
                }],
                "no-console": 1,
            },
        },
    ],
}