Build mark text
Steps
install Node.js >=v12.17 and yarn
install Python
git clone https://github.com/marktext/marktext.git
cd marktext
yarn install --frozen-lockfile
yarn run dev
There is a pull request which supporting plantuml @link
Test PASS!
Ref
https://github.com/marktext/marktext/blob/develop/docs/dev/BUILD.md