ESLint Plugin No Snapshot Testing

1.0.61 verified Sat Apr 25 auth: no javascript

An ESLint plugin (v1.0.61) that enforces a rule disallowing snapshot testing in Jest. It prevents calls to `toMatchSnapshot` and `toMatchInlineSnapshot`, offering an auto-fix to remove them. This package is a niche utility for teams that ban snapshot testing. It has a simple setup, only one rule, and is dependency-light. No known major alternative exists with identical focus.

Common errors

error ESLint couldn't find the plugin "eslint-plugin-no-snapshot-testing". ↓

cause Plugin not installed or ESLint cannot resolve it.

fix

Run npm install eslint-plugin-no-snapshot-testing --save-dev and check node_modules.

error Rule "no-snapshot-testing/no-snapshot-testing" is not defined. ↓

cause Plugin not listed in 'plugins' array or misspelled.

fix

Add 'no-snapshot-testing' to plugins in .eslintrc.

error Cannot read property 'rule' of undefined ↓

cause Invalid plugin configuration: using 'rules' with wrong format.

fix

Ensure plugins array contains 'no-snapshot-testing' and rules object key is 'no-snapshot-testing/no-snapshot-testing'.

Warnings

gotcha The rule name is repetitive: 'no-snapshot-testing/no-snapshot-testing'. ↓

fix Use exactly as documented; no alternative rule name exists.

gotcha Only disallows Jest snapshot matchers; not other snapshot-like patterns (e.g., manual file snapshots). ↓

fix Extend rule or use additional ESLint configurations if needed.

gotcha Auto-fix removes the entire `expect(...).toMatchSnapshot()` line; may remove other chained matchers if on same line. ↓

fix Ensure snapshot call is on its own line before auto-fix.

gotcha No support for custom matchers that wrap snapshot testing. ↓

fix Plugin is intentionally limited; consider custom ESLint rules for advanced cases.

Install

npm install eslint-plugin-no-snapshot-testing

yarn add eslint-plugin-no-snapshot-testing

pnpm add eslint-plugin-no-snapshot-testing

Imports

plugin (default)
wrong
```
plugins: ['eslint-plugin-no-snapshot-testing']
```
correct
```
plugins: ['no-snapshot-testing']
```
ESLint expects short plugin name; the 'eslint-plugin-' prefix is omitted.

rule (no-snapshot-testing/no-snapshot-testing)

wrong

rules: { 'no-snapshot-testing/no-snapshot': 'error' }

correct

rules: { 'no-snapshot-testing/no-snapshot-testing': 'error' }

The rule name is 'no-snapshot-testing', not a shorter variant.

rule options

wrong

rules: { 'no-snapshot-testing/no-snapshot-testing': ['error', { ... }] }

correct

rules: { 'no-snapshot-testing/no-snapshot-testing': ['error', { ... }] }

No official options documented; plugin is simple.

Quickstart

Shows ESLint config enabling the plugin and rule, and an example of a flagged snapshot call.

// .eslintrc.js
module.exports = {
  plugins: ['no-snapshot-testing'],
  rules: {
    'no-snapshot-testing/no-snapshot-testing': 'error',
  },
};

// test.js
const x = 1;
expect(x).toMatchSnapshot(); // ESLint error + fix removes this line