remark-lint-no-tabs

4.0.1 verified Fri May 01 auth: no javascript

Remark-lint rule to warn when hard tabs are used in Markdown instead of spaces. Current stable version is 4.0.1. It is part of the remark-lint monorepo, which is actively maintained with frequent releases. This rule is specific to Markdown, where tabs can cause unexpected rendering due to the hardcoded tab size of 4, making it distinct from general linters. It works with unified and remark-stringify, which automatically uses spaces. No options needed.

Common errors

error ERR_REQUIRE_ESM: require() of ES Module not supported ↓

cause Using require() to load an ESM-only package.

fix

Change to import statement or use dynamic import: const remarkLintNoTabs = await import('remark-lint-no-tabs')

error Cannot find module 'remark-lint-no-tabs' ↓

cause Package not installed or module path incorrect.

fix

Run npm install remark-lint-no-tabs in your project directory.

error TypeError: remarkLintNoTabs is not a function ↓

cause Importing as named export instead of default export.

fix

Use: import remarkLintNoTabs from 'remark-lint-no-tabs'

Warnings

breaking Package is ESM-only since v3. require() will throw ERR_REQUIRE_ESM. ↓

fix Use import instead of require(). If using CommonJS, use dynamic import() or upgrade to Node.js 16+.

deprecated The previous version 2.x used a different API signature. The plugin no longer accepts options. ↓

fix Remove any options passed to remarkLintNoTabs(). In v3+, the rule has no options.

gotcha This rule only checks for hard tab characters (U+0009). It does not check for leading spaces or mixed indentation. ↓

fix Combine with other rules like remark-lint-no-mixed-spaces-and-tabs if needed.

breaking The package no longer exports a namespace. Default export is the plugin function. ↓

fix Use default import: import remarkLintNoTabs from 'remark-lint-no-tabs'

Install

npm install remark-lint-no-tabs

yarn add remark-lint-no-tabs

pnpm add remark-lint-no-tabs

Imports

remarkLintNoTabs

wrong

const remarkLintNoTabs = require('remark-lint-no-tabs')

correct

import remarkLintNoTabs from 'remark-lint-no-tabs'

Package is ESM-only since v3. Default export is the plugin function.

remarkLint

wrong

import { remarkLint } from 'remark-lint'

correct

import remarkLint from 'remark-lint'

remark-lint is a default export, not a named export.

unified
wrong
```
import unified from 'unified'
```
correct
```
import { unified } from 'unified'
```
unified is a named export since v9. Default export is deprecated.

Quickstart

Sets up a unified pipeline with remark, parses a Markdown file, lints for tabs, and reports any issues.

import remarkLint from 'remark-lint'
import remarkLintNoTabs from 'remark-lint-no-tabs'
import remarkParse from 'remark-parse'
import remarkStringify from 'remark-stringify'
import { read } from 'to-vfile'
import { unified } from 'unified'
import { reporter } from 'vfile-reporter'

const file = await read('example.md')

await unified()
  .use(remarkParse)
  .use(remarkLint)
  .use(remarkLintNoTabs)
  .use(remarkStringify)
  .process(file)

console.error(reporter(file))