Lint and Formatter

eslint and prettier is used along each other. eslint-config-airbnb-base (not eslint-config-airbnb, which includes jsx rules) is used as well. eslint-plugin-jest and eslint-plugin-markdown (not for markdown itself, but for code block snippet appeared in markdown) are also configured.

By configuring overrides in .eslintrc.js, both of typescript and javascript files are able to be linted by eslint. (e.g. So typescript rules are not applied to .js files.)

markdownlint is configured by markdownlint-cli.

commitlint is used as commit message linter. You can yarn lint:md ., for example. Refer to conventional commits for more details.