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meeting-room/frontend/node_modules/eslint-plugin-jest/docs/rules/no-export.md
flying-hero 96f6318101 📦 添加虚拟环境和启动脚本
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2026-04-04 18:29:02 +08:00

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Disallow using exports in files containing tests (no-export)

Prevents using exports if a file has one or more tests in it.

Rule Details

This rule aims to eliminate duplicate runs of tests by exporting things from test files. If you import from a test file, then all the tests in that file will be run in each imported instance, so bottom line, don't export from a test, but instead move helper functions into a separate file when they need to be shared across tests.

Examples of incorrect code for this rule:

export function myHelper() {}

module.exports = function () {};

module.exports = {
  something: 'that should be moved to a non-test file',
};

describe('a test', () => {
  expect(1).toBe(1);
});

Examples of correct code for this rule:

function myHelper() {}

const myThing = {
  something: 'that can live here',
};

describe('a test', () => {
  expect(1).toBe(1);
});

When Not To Use It

Don't use this rule on non-jest test files.