eslint-plugin-zod

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

Rules

zod and zod-mini have distinct API surfaces. This plugin is primarily built for zod, so some rules are exclusive to zod and not available for zod-mini.

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

Universal rules (zod & zod-mini)

Name	Description	💼	🔧	💡	❌
consistent-import	Enforce a consistent import style for Zod	✅	🔧
consistent-import-source	Enforce consistent source from Zod imports			💡
consistent-object-schema-type	Enforce consistent usage of Zod schema methods			💡
no-any-schema	Disallow usage of z.any() in Zod schemas	✅ ✔️		💡
no-empty-custom-schema	Disallow usage of z.custom() without arguments	✅
no-unknown-schema	Disallow usage of z.unknown() in Zod schemas
prefer-meta	Enforce usage of .meta() over .describe()	✅ ✔️	🔧
prefer-namespace-import	Enforce importing zod as a namespace import (import * as z from 'zod')		🔧		❌
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)

zod exclusive rules

Name	Description	💼	🔧	💡	❌
array-style	Enforce consistent Zod array style	✅	🔧
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-string-schema-with-uuid	Disallow usage of z.string().uuid() in favor of the dedicated z.uuid() schema	✅	🔧
no-throw-in-refine	Disallow throwing errors directly inside Zod refine callbacks	✅
prefer-enum-over-literal-union	Prefer z.enum() over z.union() when all members are string literals.	✅	🔧
prefer-meta-last	Enforce .meta() as last method	✅	🔧
prefer-string-schema-with-trim	Enforce z.string().trim() to prevent accidental leading/trailing whitespace	✅	🔧

Installation

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

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

yarn add --dev eslint eslint-plugin-zod

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

Configuration

1. Import the plugin

   import eslintPluginZod from 'eslint-plugin-zod';

2. Add recommended config to your ESLint setup

   eslintPluginZod.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 eslintPluginZod from 'eslint-plugin-zod';

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

Zod peer dependency version

eslint-plugin-zod 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.