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jest.js
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jest.js
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const readPkgUp = require('read-pkg-up')
/**
* @see https://github.com/eslint/eslint/issues/3458
* @see https://www.npmjs.com/package/@rushstack/eslint-patch
*/
require('@rushstack/eslint-patch/modern-module-resolution')
let hasJestDom = false
let hasTestingLibrary = false
try {
const {packageJson} = readPkgUp.sync({normalize: true})
const allDeps = Object.keys({
...packageJson.peerDependencies,
...packageJson.devDependencies,
...packageJson.dependencies,
})
hasJestDom = allDeps.includes('@testing-library/jest-dom')
hasTestingLibrary = [
'@testing-library/dom',
'@testing-library/react',
'@testing-library/angular',
'@testing-library/vue',
].some(dependency => allDeps.includes(dependency))
} catch (error) {
// ignore error
}
module.exports = {
env: {
'jest/globals': true,
},
plugins: [
'jest',
hasJestDom ? 'jest-dom' : null,
hasTestingLibrary ? 'testing-library' : null,
].filter(Boolean),
rules: {},
overrides: [
{
files: [
'**/__tests__/**/*.+(js|ts)?(x)',
'**/*.{spec,test}.+(js|ts)?(x)',
],
rules: {
'react/display-name': 'off', // we don't need a display name in test files
'jest/consistent-test-it': 'off',
'jest/expect-expect': 'off',
'jest/max-expects': 'off',
'jest/max-nested-describe': 'error',
'jest/no-alias-methods': 'off',
'jest/no-commented-out-tests': 'warn',
'jest/no-conditional-expect': 'error',
'jest/no-conditional-in-test': 'error',
'jest/no-confusing-set-timeout': 'error',
'jest/no-deprecated-functions': 'error',
'jest/no-disabled-tests': 'warn',
'jest/no-done-callback': 'error',
'jest/no-duplicate-hooks': 'off',
'jest/no-export': 'error',
'jest/no-focused-tests': 'error',
'jest/no-hooks': 'off',
'jest/no-identical-title': 'error',
'jest/no-interpolation-in-snapshots': 'error',
'jest/no-jasmine-globals': 'off',
'jest/no-large-snapshots': ['warn', {maxSize: 300}],
'jest/no-mocks-import': 'error',
'jest/no-restricted-jest-methods': 'off',
'jest/no-restricted-matchers': 'off',
'jest/no-standalone-expect': 'off',
'jest/no-test-prefixes': 'error',
'jest/no-test-return-statement': 'off',
'jest/no-untyped-mock-factory': 'off',
'jest/prefer-called-with': 'error',
'jest/prefer-comparison-matcher': 'error',
'jest/prefer-each': 'error',
'jest/prefer-equality-matcher': 'error',
'jest/prefer-expect-assertions': 'off',
'jest/prefer-expect-resolves': 'off',
'jest/prefer-hooks-in-order': 'error',
'jest/prefer-hooks-on-top': 'error',
'jest/prefer-lowercase-title': 'off',
'jest/prefer-mock-promise-shorthand': 'error',
'jest/prefer-snapshot-hint': 'error',
'jest/prefer-spy-on': 'off',
'jest/prefer-strict-equal': 'off',
'jest/prefer-to-be': 'off',
'jest/prefer-to-contain': 'warn',
'jest/prefer-to-have-length': 'warn',
'jest/prefer-todo': 'warn',
'jest/require-hook': 'off',
'jest/require-to-throw-message': 'off',
'jest/require-top-level-describe': 'off',
'jest/unbound-method': 'off',
'jest/valid-describe-callback': 'error',
'jest/valid-expect': 'error',
'jest/valid-expect-in-promise': 'error',
'jest/valid-title': 'warn',
...(hasJestDom
? {
'jest-dom/prefer-checked': 'error',
'jest-dom/prefer-empty': 'error',
'jest-dom/prefer-enabled-disabled': 'error',
'jest-dom/prefer-focus': 'error',
'jest-dom/prefer-in-document': 'error',
'jest-dom/prefer-required': 'error',
'jest-dom/prefer-to-have-attribute': 'error',
'jest-dom/prefer-to-have-class': 'error',
'jest-dom/prefer-to-have-style': 'error',
'jest-dom/prefer-to-have-text-content': 'error',
'jest-dom/prefer-to-have-value': 'error',
}
: null),
...(hasTestingLibrary
? {
'testing-library/await-async-events': 'error',
'testing-library/await-async-queries': 'error',
'testing-library/await-async-utils': 'error',
'testing-library/await-fire-event': 'off',
'testing-library/consistent-data-testid': 'off',
'testing-library/no-await-sync-events': 'error',
'testing-library/no-await-sync-queries': 'error',
'testing-library/no-container': 'error',
'testing-library/no-debugging-utils': 'error',
'testing-library/no-dom-import': ['error', 'react'],
'testing-library/no-global-regexp-flag-in-query': 'error',
'testing-library/no-manual-cleanup': 'error',
'testing-library/no-node-access': 'error',
'testing-library/no-promise-in-fire-event': 'error',
'testing-library/no-render-in-lifecycle': 'error',
'testing-library/no-unnecessary-act': 'error',
'testing-library/no-wait-for-multiple-assertions': 'error',
'testing-library/no-wait-for-side-effects': 'error',
'testing-library/no-wait-for-snapshot': 'error',
'testing-library/prefer-explicit-assert': 'warn',
'testing-library/prefer-find-by': 'error',
'testing-library/prefer-implicit-assert': 'error',
'testing-library/prefer-presence-queries': 'error',
'testing-library/prefer-query-by-disappearance': 'error',
'testing-library/prefer-query-matchers': 'off',
'testing-library/prefer-screen-queries': 'error',
'testing-library/prefer-user-event': 'error',
'testing-library/render-result-naming-convention': 'error',
}
: null),
},
},
{
files: ['**/__tests__/**/*.ts?(x)', '**/*.{spec,test}.ts?(x)'],
rules: {
'jest/no-untyped-mock-factory': 'error',
'@typescript-eslint/unbound-method': 'off',
'jest/unbound-method': 'error',
},
},
],
}