eslint-plugin-zod-x

eslint-plugin-zod-x

ESLint plugin that adds custom linting rules to enforce best practices when using Zod

Rules

💼 Configurations enabled in.
✅ Set in the recommended configuration.
🔧 Automatically fixable by the --fix CLI option.
💡 Manually fixable by editor suggestions.

Name	Description	💼	🔧	💡
array-style	Enforce consistent Zod array style	✅	🔧
consistent-import-source	Enforce consistent source from Zod imports
no-any	Disallow usage of z.any() in Zod schemas	✅		💡
no-empty-custom-schema	Disallow usage of z.custom() without arguments	✅
no-number-schema-with-int	Disallow usage of z.number().int() as it is considered legacy	✅	🔧
no-optional-and-default-together	Disallow using both .optional() and .default() on the same Zod schema	✅	🔧
no-throw-in-refine	Disallow throwing errors directly inside Zod refine callbacks	✅
prefer-meta	Enforce usage of .meta() over .describe()	✅	🔧
prefer-meta-last	Enforce .meta() as last method	✅	🔧
prefer-namespace-import	Enforce importing zod as a namespace import (import * as z from 'zod')	✅	🔧
prefer-strict-object	Enforce usage of .strictObject() over .object() and/or .looseObject()
require-brand-type-parameter	Require type parameter on .brand() functions	✅		💡
require-error-message	Enforce that custom refinements include an error message	✅	🔧
require-schema-suffix	Require schema suffix when declaring a Zod schema	✅	🔧
schema-error-property-style	Enforce consistent style for error messages in Zod schema validation (using ESQuery patterns)

Installation

Install eslint and eslint-plugin-zod-x using your preferred package manager:

npm i --save-dev eslint eslint-plugin-zod-x

yarn add --dev eslint eslint-plugin-zod-x

pnpm add --save-dev eslint eslint-plugin-zod-x

Configuration

• Import the plugin

  import eslintPluginZodX from 'eslint-plugin-zod-x';
  

• Add recommended config to your ESLint setup

  eslintPluginZodX.configs.recommended,
  

Here’s a minimal example using the flat config format:

// eslint.config.js
import { defineConfig } from 'eslint/config';
import eslint from '@eslint/js';
import eslintPluginZodX from 'eslint-plugin-zod-x';

export default defineConfig(
  eslint.configs.recommended,
  eslintPluginZodX.configs.recommended,
);

Zod peer dependency version

eslint-plugin-zod-x is designed for projects that use zod@^4. While the plugin analyzes Zod schemas in your code, it doesn’t import or depend on Zod at runtime. To document this relationship without forcing installation, Zod is declared as an optional peer dependency in the plugin’s package.json.

If your project uses Zod v4, the plugin will automatically lint your schemas. If you’re not using Zod (for example, in a separate ESLint workspace), you don’t need to install it.