eslint-plugin-mocha

ESLint rules for mocha.

Install and configure

This plugin requires ESLint 9.0.0 or later.

npm install --save-dev eslint-plugin-mocha

Configuration via eslint.config.js

To use this plugin with the new eslint configuration format (flat config):

import mochaPlugin from "eslint-plugin-mocha";

export default [
    mochaPlugin.configs.flat.recommended, // or `mochaPlugin.configs.flat.all` to enable all
    // ... Your configurations here
];

Plugin Settings

This plugin supports the following settings, which are used by multiple rules:

• additionalCustomNames: This allows rules to check additional function names when looking for suites or test cases. This might be used with a custom Mocha extension, such as ember-mocha or mocha-each.

  Example:

  {
      "rules": {
          "mocha/no-skipped-tests": "error",
          "mocha/no-exclusive-tests": "error"
      },
      "settings": {
          "mocha/additionalCustomNames": [
              {
                  "name": "describeModule",
                  "type": "suite",
                  "interfaces": ["BDD"]
              },
              {
                  "name": "testModule",
                  "type": "testCase",
                  "interfaces": ["TDD"]
              }
          ]
      }
  }

  The name property can be in any of the following forms:

  • A plain name e.g. describeModule, which allows:

  describeModule("example", function() { ... });

  • A dotted name, e.g. describe.modifier, which allows:

  describe.modifier("example", function() { ... });

  • A name with parentheses, e.g. forEach().describe, which allows:

  forEach([ 1, 2, 3 ])
      .describe("example", function(n) { ... });

  • Any combination of the above, e.g. forEach().describeModule.modifier, which allows:

  forEach([ 1, 2, 3 ])
      .describeModule.modifier("example", function(n) { ... });

Configs

recommended

This plugin exports a recommended config that enforces good practices.

Enable it with the extends option:

{
    "extends": ["plugin:mocha/recommended"]
}

all

There's also a configuration that enables all of our rules.

See Configuring Eslint on eslint.org for more info.

Rules

💼 Configurations enabled in.\ ⚠️ Configurations set to warn in.\ 🚫 Configurations disabled in.\ ✅ Set in the recommended configuration.\ 🔧 Automatically fixable by the --fix CLI option.