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github.com/dcastil/tailwind-merge

repository ↗ · DeepWiki ↗ · release v2.6.1 ↗ · + Follow · compare 3 versions

90 symbols 253 edges 54 files ⚖ MIT 6 documented · 7% ● updated 5d agotailwind-merge@3.7.0 · 2026-09-12★ 5,69021 open issues

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⨍ Functions 80 ◇ Types & classes 10

What it actually does AI analysis from the code graph — generated when you open this

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README

<a href="https://github.com/dcastil/tailwind-merge">
    <img src="https://github.com/dcastil/tailwind-merge/raw/v2.6.1/assets/logo.svg" alt="tailwind-merge" height="150px" />
</a>

tailwind-merge

Utility function to efficiently merge Tailwind CSS classes in JS without style conflicts.

import { twMerge } from 'tailwind-merge'

twMerge('px-2 py-1 bg-red hover:bg-dark-red', 'p-3 bg-[#B91C1C]')
// → 'hover:bg-dark-red p-3 bg-[#B91C1C]'

Supports Tailwind v3.0 up to v3.4 (if you use Tailwind v2, use tailwind-merge v0.9.0)
Works in all modern browsers and maintained Node versions
Fully typed
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Extension points exported contracts — how you extend this code

ConfigStaticPart (Interface)

* The static part of the tailwind-merge configuration. When merging multiple configurations, the properties of this inte

src/lib/types.ts

ConfigGroupsPart (Interface)

* The dynamic part of the tailwind-merge configuration. When merging multiple configurations, the user can choose to eit

src/lib/types.ts

ClassPartObject (Interface)

(no doc)

src/lib/class-group-utils.ts

ClassValidatorObject (Interface)

(no doc)

src/lib/class-group-utils.ts

LruCache (Interface)

(no doc)

src/lib/lru-cache.ts

browse all types & interfaces →

Core symbols most depended-on inside this repo

extendTailwindMerge

called by 8

src/lib/extend-tailwind-merge.ts

createTailwindMerge

called by 7

src/lib/create-tailwind-merge.ts

fromTheme

called by 6

src/lib/from-theme.ts

tailwindMerge

called by 6

src/lib/create-tailwind-merge.ts

mergeConfigs

called by 4

src/lib/merge-configs.ts

twJoin

called by 3

src/lib/tw-join.ts

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Shape

Function 76

Interface 10

Method 4

Languages

TypeScript100%

Modules by API surface

src/lib/validators.ts18 symbols

src/lib/default-config.ts14 symbols

src/lib/class-group-utils.ts12 symbols

src/lib/types.ts9 symbols

src/lib/lru-cache.ts7 symbols

scripts/update-readme.mjs5 symbols

src/lib/merge-configs.ts4 symbols

src/lib/parse-class-name.ts3 symbols

src/lib/create-tailwind-merge.ts3 symbols

tests/public-api.test.ts2 symbols

src/lib/tw-join.ts2 symbols

src/lib/from-theme.ts2 symbols

Dependencies from manifests, versioned

@babel/core7.26.0 · 1×

@babel/preset-env7.26.0 · 1×

@codspeed/vitest-plugin4.0.0 · 1×

@rollup/plugin-babel6.0.4 · 1×

@rollup/plugin-node-resolve16.0.0 · 1×

@rollup/plugin-typescript12.1.2 · 1×

@vitest/coverage-v82.1.8 · 1×

@vitest/eslint-plugin1.1.22 · 1×

babel-plugin-annotate-pure-calls0.4.0 · 1×

babel-plugin-polyfill-regenerator0.6.3 · 1×

eslint9.17.0 · 1×

eslint-plugin-import2.31.0 · 1×

For agents

$ claude mcp add tailwind-merge \
  -- python -m otcore.mcp_server <graph>

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github.com/dcastil/tailwind-merge @tailwind-merge@3.7.0@v3.6.0@v2.6.1

tailwind-merge

Get started

Extension points exported contracts — how you extend this code

Core symbols most depended-on inside this repo

Shape

Languages

Modules by API surface

Dependencies from manifests, versioned

For agents

Ask about this repo answers extend the page

github.com/dcastil/tailwind-merge