feat: remove snapshot processor and flat/snapshot config (#1532)

BREAKING CHANGE: removed unneeded `snapshot` processor and `flat/snapshot` config

Author: G-Rath

README.md

@@ -275,35 +275,6 @@ While the `recommended` and `style` configurations only change in major versions
 the `all` configuration may change in any release and is thus unsuited for
 installations requiring long-term consistency.
 
-## Snapshot processing
-
-> [!NOTE]
->
-> This is only relevant for `eslint.config.js`
-
-This plugin provides a
-[custom processor](https://eslint.org/docs/latest/extend/custom-processors) to
-allow rules to "lint" snapshot files.
-
-For `.eslintrc` based configs, this is automatically enabled out of the box but
-must be opted into for `eslint.config.js` using the `flat/snapshots` config:
-
-```js
-const jest = require('eslint-plugin-jest');
-
-module.exports = [
-  {
-    ...jest.configs['flat/snapshots'],
-    rules: {
-      'jest/no-large-snapshots': ['error', { maxSize: 1 }],
-    },
-  },
-];
-```
-
-Unlike other configs, this includes a `files` array that matches `.snap` files
-meaning you can use it directly
-
 ## Rules
 
 <!-- begin auto-generated rules list -->

src/__tests__/__snapshots__/rules.test.ts.snap

@@ -193,20 +193,6 @@ exports[`rules should export configs that refer to actual rules 1`] = `
       "jest/valid-title": "error",
     },
   },
-  "flat/snapshots": {
-    "files": [
-      "**/*.snap",
-    ],
-    "plugins": {
-      "jest": ObjectContaining {
-        "meta": {
-          "name": "eslint-plugin-jest",
-          "version": Any<String>,
-        },
-      },
-    },
-    "processor": "jest/snapshots",
-  },
   "flat/style": {
     "languageOptions": {
       "globals": {

src/__tests__/rules.test.ts

@@ -61,7 +61,6 @@ describe('rules', () => {
       'flat/recommended': { plugins: { jest: expectJestPlugin } },
       'flat/style': { plugins: { jest: expectJestPlugin } },
       'flat/all': { plugins: { jest: expectJestPlugin } },
-      'flat/snapshots': { plugins: { jest: expectJestPlugin } },
     });
     expect(Object.keys(recommendedConfigs)).toEqual([
       'all',
@@ -70,7 +69,6 @@ describe('rules', () => {
       'flat/all',
       'flat/recommended',
       'flat/style',
-      'flat/snapshots',
     ]);
     expect(Object.keys(recommendedConfigs.all.rules)).toHaveLength(
       ruleNames.length - deprecatedRules.length,

src/index.ts

@@ -6,7 +6,6 @@ import {
   version as packageVersion,
 } from '../package.json';
 import globals from './globals.json';
-import * as snapshotProcessor from './processors/snapshot-processor';
 
 type RuleModule = TSESLint.RuleModule<string, unknown[]> & {
   meta: Required<Pick<TSESLint.RuleMetaData<string>, 'docs'>>;
@@ -76,19 +75,14 @@ const plugin = {
     | 'style'
     | 'flat/all'
     | 'flat/recommended'
-    | 'flat/style'
-    | 'flat/snapshots',
+    | 'flat/style',
     Pick<Required<TSESLint.Linter.Config>, 'rules'>
   >,
   environments: {
     globals: {
       globals,
     },
   },
-  processors: {
-    snapshots: snapshotProcessor,
-    '.snap': snapshotProcessor,
-  },
   rules,
 };
 
@@ -113,12 +107,6 @@ plugin.configs = {
   'flat/all': createFlatConfig(allRules),
   'flat/recommended': createFlatConfig(recommendedRules),
   'flat/style': createFlatConfig(styleRules),
-  'flat/snapshots': {
-    // @ts-expect-error this is introduced in flat config
-    files: ['**/*.snap'],
-    plugins: { jest: plugin },
-    processor: 'jest/snapshots',
-  },
 };
 
 export = plugin;