| name | drop-em-dash-eslint |
| description | Configures and applies eslint-plugin-drop-em-dash to forbid Unicode em dash (U+2014, —) in source and autofix to hyphen-minus (-). Use when the user mentions em dash, en dash vs em dash, typography in code, ASCII-friendly punctuation, eslint rule for dashes, or paste accidents with special dashes. |
Drop em dash (ESLint)
What it does
- Package:
eslint-plugin-drop-em-dash (repo)
- Rule:
drop-em-dash/drop-em-dash — reports literal U+2014 anywhere in a parsed file (code, comments, strings).
- Autofix: each
— → - (hyphen-minus). Run eslint . --fix or fix in the editor.
- Does not flag en dash (U+2013), slashes, or existing ASCII hyphens.
Install
npm install --save-dev eslint eslint-plugin-drop-em-dash
Peer: eslint >= 8.57.
Flat config (ESLint 9)
import dropEmDash from 'eslint-plugin-drop-em-dash';
export default [...dropEmDash.configs['flat/recommended']];
Manual:
import dropEmDash from 'eslint-plugin-drop-em-dash';
export default [
{
plugins: { 'drop-em-dash': dropEmDash },
rules: { 'drop-em-dash/drop-em-dash': 'error' },
},
];
Legacy .eslintrc
{
"extends": ["plugin:drop-em-dash/recommended"]
}
Verify
npx eslint . --max-warnings 0
npx eslint . --fix
When editing this plugin repo
- Rule implementation:
lib/rules/drop-em-dash.js
- Plugin entry + presets:
lib/index.js
- Tests:
tests/drop-em-dash.test.js, tests/integration-eslint.test.js, fixtures under tests/fixtures/
References
