ESLint Rule: no-single-word-imports

Description

This ESLint rule enforces naming conventions for imports of single-word identifiers within specific directories. It is part of the eslint-plugin-greenwich plugin.

The rule checks that single-word import names do not violate specified naming conventions in certain directory paths. In this rule's context, a "single-word import" refers to an import statement that imports a default export with a single-word identifier.

Installation

To use this rule in your ESLint configuration, you can install the eslint-plugin-greenwich plugin using your preferred package manager.

1. Using pnpm:

   pnpm install eslint-plugin-greenwich --save-dev

2. Using npm:

   npm install eslint-plugin-greenwich --save-dev

3. Using yarn:

   yarn add eslint-plugin-greenwich --dev

Rule Details

This rule checks import statements within specified directories (e.g., "/components/") and ensures that single-word import names adhere to specific naming conventions.

Options

This rule supports the following configuration options:

• allowedPrefixes (array of strings, default: ['V']): Specifies a list of allowed prefixes for single-word import names. If provided, the rule allows import names that start with any of the specified prefixes.

• paths (array of strings, default: ['/components/']): Specifies an array of directory paths where the rule should be applied. Only import statements within these paths will be checked for compliance with the rule.

ESLint Configuration

To configure ESLint for your project, you can create or edit an ESLint configuration file (e.g., .eslintrc.js) in your project's root directory. Below is an example ESLint configuration:

module.exports = {
  extends: ["eslint:recommended"], // Use recommended rules as a starting point
  plugins: ["greenwich"], // Add the 'greenwich' plugin
  rules: {
    "greenwich/prefix-one-word-import": [
      "error",
      {
        allowedPrefixes: ["V"], // Customize allowed prefixes
        paths: ["/components/"] // Specify the directory paths to check
      }
    ]
    // Add more rules and configurations as needed
  }
};

Examples

Here are some examples of how this rule works:

// ESLint: Single-word file names in components directory must start with one of the following prefixes: ['V']
import Button from "@/components/base/Button.vue";

// ESLint: Single-word file names in components directory must start with one of the following prefixes: ['V']
import MyButton from "@/components/base/Button.vue";

// Correct: Import name "VButton" starts with an allowed prefix ['V']
import VButton from "@/components/base/Button.vue";

// Correct: Import name "DragDrop" is multi word, don't check it
import DragDrop from "@/components/base/DragDrop.vue";