mongodb-mcp-server/eslint.config.js at main · mongodb-js/mongodb-mcp-server · GitHub

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import { defineConfig, globalIgnores } from "eslint/config";
import js from "@eslint/js";
import globals from "globals";
import tseslint from "typescript-eslint";
import eslintPluginPrettierRecommended from "eslint-plugin-prettier/recommended";
import vitestPlugin from "@vitest/eslint-plugin";
import enforceZodV4 from "./eslint-rules/enforce-zod-v4.js";

const sourceFiles = ["knip.ts", "packages/**/*.ts", "packages/**/*.tsx"];
const testFiles = ["packages/**/*.test.ts", "packages/**/*.test.tsx"];

export default defineConfig([
    { files: sourceFiles, plugins: { js }, extends: ["js/recommended"] },
    { files: sourceFiles, languageOptions: { globals: globals.node } },
    {
        files: testFiles,
        plugins: {
            vitest: vitestPlugin,
        },
        languageOptions: {
            globals: {
                ...globals.node,
            },
        },
        rules: {
            ...vitestPlugin.configs.recommended.rules,
            "vitest/valid-title": "off",
            "vitest/no-conditional-expect": "off",
            "vitest/no-standalone-expect": "off",
            "vitest/expect-expect": [
                "error",
                {
                    assertFunctionNames: ["expect", "expectDefined", "verifyMockCalls", "expectForbiddenOperator"],
                },
            ],
        },
    },
    {
        files: sourceFiles,
        extends: [tseslint.configs.recommendedTypeChecked],
        languageOptions: {
            parserOptions: {
                projectService: true,
                tsconfigRootDir: import.meta.dirname,
            },
        },
    },
    {
        files: sourceFiles,
        rules: {
            "@typescript-eslint/switch-exhaustiveness-check": ["error", { considerDefaultExhaustiveForUnions: true }],
            "@typescript-eslint/no-non-null-assertion": "error",
            "@typescript-eslint/consistent-type-imports": ["error", { prefer: "type-imports" }],
            "@typescript-eslint/consistent-type-exports": [
                "error",
                {
                    fixMixedExportsWithInlineTypeSpecifier: false,
                },
            ],
            eqeqeq: "error",
            "no-self-compare": "error",
            "no-unassigned-vars": "error",
            "@typescript-eslint/await-thenable": "error",
            "@typescript-eslint/explicit-function-return-type": "error",
        },
    },
    {
        files: ["packages/mongodb-mcp-server/src/**/*.ts"],
        plugins: {
            "enforce-zod-v4": {
                rules: {
                    "enforce-zod-v4": enforceZodV4,
                },
            },
        },
        rules: {
            "enforce-zod-v4/enforce-zod-v4": "error",
            "no-restricted-imports": [
                "error",
                {
                    paths: [
                        {
                            name: "assert",
                            message:
                                "Use explicit error handling or test framework assertions (e.g., vitest's expect) instead.",
                        },
                        {
                            name: "node:assert",
                            message:
                                "Use explicit error handling or test framework assertions (e.g., vitest's expect) instead.",
                        },
                    ],
                },
            ],
            "no-console": ["error"],
        },
    },
    {
        files: testFiles,
        rules: {
            /** Allow null assertions in test files */
            "@typescript-eslint/no-non-null-assertion": "off",
        },
    },
    globalIgnores([
        "node_modules",
        "**/dist/**",
        "packages/atlas-api-client/openapi.d.ts",
        ".claude/**",
        "packages/ui/src/lib/**",
        "coverage",
        "global.d.ts",
        "eslint.config.js",
        "**/vitest.config.ts",
        "**/vite*.config.ts",
        "**/temp/**",
        "**/*.tsbuildinfo",
        "packages/browser-tests/polyfills/**",
        "eslint-rules",
        ".yalc",
        "**/vitest.config.d.ts",
        "**/vitest.config.js",
        "**/vitest.config.js.map",
        "**/vitest.config.d.ts.map",
    ]),
    eslintPluginPrettierRecommended,
]);