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ci: run against upcoming next major ESLint version (#1534)
* ci: run against next ESLint * test: make util * test: use a class * test: use a class (2) * test: improve compat class * refactor: make `flatCompat` util private * test: get `linter#verify` cases passing * ci: skip lint project on eslint v9 * test: ignore coverage in util class * chore: move Jest config into dedicated file * ci: handle skipping linting in Jest config * test: skip `unbound-method` when using `@typescript-eslint` v6 * ci: skip ESLint v9 on Node v16 * refactor: import `Config` from `jest` directly * refactor: address `@ts-expect-error`s * refactor: use a constant instead of a function
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‎.eslintrc.js‎

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@@ -98,7 +98,7 @@ module.exports = {
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globals,
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},
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{
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files: ['src/**/*', 'dangerfile.ts', 'tools/*'],
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files: ['src/**/*', 'dangerfile.ts', 'tools/*', './jest.config.ts'],
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parserOptions: {
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sourceType: 'module',
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},

‎.github/workflows/nodejs.yml‎

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fail-fast: false
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matrix:
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node-version: [16.x, 18.x, 19.x, 20.x, 21.x]
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eslint-version: [7, 8]
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eslint-version: [7, 8, next]
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ts-eslint-plugin-version: [6, 7]
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exclude:
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# ts-eslint/plugin@7 doesn't support node@16
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- node-version: 16.x
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ts-eslint-plugin-version: 7
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# eslint@9 doesn't support node@16
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- node-version: 16.x
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eslint-version: next
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# ts-eslint/plugin@7 doesn't support node@19
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- node-version: 19.x
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ts-eslint-plugin-version: 7
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yarn add --dev eslint@${{ matrix.eslint-version }} @typescript-eslint/eslint-plugin@${{ matrix.ts-eslint-plugin-version }} @typescript-eslint/parser@${{ matrix.ts-eslint-plugin-version }}
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- name: run tests
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# only collect coverage on eslint versions that support dynamic import
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run: yarn test --coverage ${{ matrix.eslint-version >= 8 }}
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run: yarn test --coverage ${{ matrix.eslint-version == 8 }}
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env:
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CI: true
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- uses: codecov/codecov-action@v3

‎jest.config.ts‎

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import { version as typescriptESLintPluginVersion } from '@typescript-eslint/eslint-plugin/package.json';
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import { version as eslintVersion } from 'eslint/package.json';
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import type { Config } from 'jest';
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import * as semver from 'semver';
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const config = {
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clearMocks: true,
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restoreMocks: true,
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resetMocks: true,
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coverageThreshold: {
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global: {
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branches: 100,
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functions: 100,
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lines: 100,
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statements: 100,
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},
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},
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projects: [
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{
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displayName: 'test',
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testPathIgnorePatterns: [
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'<rootDir>/lib/.*',
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'<rootDir>/src/rules/__tests__/fixtures/*',
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'<rootDir>/src/rules/__tests__/test-utils.ts',
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],
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coveragePathIgnorePatterns: ['/node_modules/'],
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},
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{
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displayName: 'lint',
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runner: 'jest-runner-eslint',
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testMatch: ['<rootDir>/**/*.{js,ts}'],
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testPathIgnorePatterns: ['<rootDir>/lib/.*'],
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coveragePathIgnorePatterns: ['/node_modules/'],
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},
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],
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} satisfies Config;
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if (semver.major(eslintVersion) >= 9) {
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config.projects = config.projects.filter(
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({ displayName }) => displayName !== 'lint',
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);
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// jest/unbound-method doesn't work when using @typescript-eslint v6
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if (semver.major(typescriptESLintPluginVersion) === 6) {
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for (const project of config.projects) {
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project.testPathIgnorePatterns.push(
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'<rootDir>/src/rules/__tests__/unbound-method.test.ts',
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);
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project.coveragePathIgnorePatterns.push(
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'<rootDir>/src/rules/unbound-method.ts',
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);
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}
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}
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}
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export default config;

‎package.json‎

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"@semantic-release/github"
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]
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},
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"jest": {
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"coverageThreshold": {
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"global": {
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"branches": 100,
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"functions": 100,
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"lines": 100,
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"statements": 100
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}
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},
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"projects": [
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{
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"displayName": "test",
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"testPathIgnorePatterns": [
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"<rootDir>/lib/.*",
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"<rootDir>/src/rules/__tests__/fixtures/*",
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"<rootDir>/src/rules/__tests__/test-utils.ts"
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]
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},
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{
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"displayName": "lint",
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"runner": "jest-runner-eslint",
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"testMatch": [
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"<rootDir>/**/*.{js,ts}"
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],
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"testPathIgnorePatterns": [
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"<rootDir>/lib/.*"
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]
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}
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]
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},
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"dependencies": {
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"@typescript-eslint/utils": "^6.0.0"
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},

‎src/rules/__tests__/consistent-test-it.test.ts‎

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import { TSESLint } from '@typescript-eslint/utils';
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import dedent from 'dedent';
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import rule from '../consistent-test-it';
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import { TestCaseName } from '../utils';
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import { espreeParser } from './test-utils';
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import { FlatCompatRuleTester, espreeParser } from './test-utils';
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const ruleTester = new TSESLint.RuleTester({
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const ruleTester = new FlatCompatRuleTester({
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parser: espreeParser,
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parserOptions: {
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ecmaVersion: 2015,

‎src/rules/__tests__/expect-expect.test.ts‎

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import { AST_NODE_TYPES, TSESLint } from '@typescript-eslint/utils';
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import { AST_NODE_TYPES } from '@typescript-eslint/utils';
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import dedent from 'dedent';
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import rule from '../expect-expect';
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import { espreeParser } from './test-utils';
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import { FlatCompatRuleTester, espreeParser } from './test-utils';
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const ruleTester = new TSESLint.RuleTester({
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const ruleTester = new FlatCompatRuleTester({
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parser: espreeParser,
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parserOptions: {
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‎src/rules/__tests__/max-expects.test.ts‎

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import { TSESLint } from '@typescript-eslint/utils';
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import dedent from 'dedent';
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import rule from '../max-expects';
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import { espreeParser } from './test-utils';
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import { FlatCompatRuleTester, espreeParser } from './test-utils';
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const ruleTester = new TSESLint.RuleTester({
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const ruleTester = new FlatCompatRuleTester({
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parser: espreeParser,
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parserOptions: {
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‎src/rules/__tests__/max-nested-describe.test.ts‎

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import { TSESLint } from '@typescript-eslint/utils';
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import dedent from 'dedent';
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import rule from '../max-nested-describe';
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import { espreeParser } from './test-utils';
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import { FlatCompatRuleTester, espreeParser } from './test-utils';
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const ruleTester = new TSESLint.RuleTester({
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const ruleTester = new FlatCompatRuleTester({
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parser: espreeParser,
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parserOptions: {
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‎src/rules/__tests__/no-alias-methods.test.ts‎

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import { TSESLint } from '@typescript-eslint/utils';
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import rule from '../no-alias-methods';
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import { FlatCompatRuleTester } from './test-utils';
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const ruleTester = new TSESLint.RuleTester();
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const ruleTester = new FlatCompatRuleTester();
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ruleTester.run('no-alias-methods', rule, {
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valid: [

‎src/rules/__tests__/no-commented-out-tests.test.ts‎

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import { TSESLint } from '@typescript-eslint/utils';
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import dedent from 'dedent';
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import rule from '../no-commented-out-tests';
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import { espreeParser } from './test-utils';
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import { FlatCompatRuleTester, espreeParser } from './test-utils';
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const ruleTester = new TSESLint.RuleTester({
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const ruleTester = new FlatCompatRuleTester({
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parser: espreeParser,
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parserOptions: {
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ecmaVersion: 2015,

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