Technologies

What is mermaid built with?

Q: Which repos have a stack like mermaid's?

The ones that share most of its stack: langgenius/dify, koala73/worldmonitor, and different-ai/openwork.

mermaid is a TypeScript repo. It makes its content with js-yaml, markdown-table, sharp, dompurify, @braintree/sanitize-url, and 2 more, validates its data with Ajv, and is tested with @playwright/test, Vitest, and jsdom. It has 232,641 written lines, with 505 test files.

Read on November 4, 2026, at commit 63333fd. Read it as markdown

mermaid

Support

Content

js-yaml1 file
markdown-table1 file
sharp1 file

Testing

@playwright/test47 files
Vitest4 files

Tools

globby3 files
esbuild2 files
monocart-coverage-reports2 files
ESLint1 file

packages/mermaid-layout-tidy-tree

Support

Testing

Vitest1 file

packages/mermaid-zenuml

Support

Testing

Vitest1 file

packages/mermaid

Frontend

Styles

stylis1 file

Interface

roughjs76 files
D355 files
dagre-d3-es8 files
cytoscape4 files
cytoscape-cose-bilkent1 file
cytoscape-fcose1 file
elkjs1 file

packages/mermaid

Support

Content

dompurify7 files
js-yaml5 files
@braintree/sanitize-url4 files
katex1 file
marked1 file

Validation

Ajv2 files

Testing

Vitest258 files
jsdom5 files

Tools

type-fest5 files
ts-dedent2 files
csstree-validator1 file
json-schema-to-typescript1 file
Prettier1 file

Other

dayjs3 files
es-toolkit3 files

packages/parser

Support

Testing

Vitest12 files

Other repos with a similar stack

Ordered by how much of its stack they share with mermaid, then by stars.

langgeniusdify
160.4k
Build Agentic workflows, RAG pipelines, with rich AI model and tool support on one collaborative workspace. Deploy on cloud, VPC, or self-hosted, so teams move from prototype to production without rebuilding the stack.
6 of 30 in common · PythonCompare →
koala73worldmonitor
90.2k
Real-time global intelligence dashboard. AI-powered news aggregation, geopolitical monitoring, and infrastructure tracking in a unified situational awareness interface
5 of 30 in commonCompare →
different-aiopenwork
24.4k
The open-source alternative to Claude Cowork (powered by opencode)
5 of 30 in commonCompare →
NousResearchhermes-agent
260.3k
The agent that grows with you
4 of 30 in common · PythonCompare →
datawhalechinahello-agents
86k
📚 《从零开始构建智能体》——从零开始的智能体原理与实践教程
4 of 30 in common · PythonCompare →
anomalycoopencode
224.5k
The open source coding agent.
3 of 30 in commonCompare →

Frequently asked questions

What language is mermaid written in?

mermaid is written in TypeScript, with 232,641 written lines.

Does mermaid have tests?

Yes. mermaid has 505 test files and is tested with @playwright/test, Vitest, and jsdom.

Which repos have a stack like mermaid's?

The ones that share most of its stack:langgenius/dify koala73/worldmonitor different-ai/openwork

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