npm install
npm start
# in another tab
npm run webpack
After you see the webpack compilation succeed (the npm run webpack
step), open up build/index.html
(no server needed!). Then modify whichever .re
file in src
and refresh the page to see the changes.
For more elaborate ReasonReact examples, please see https://github.com/reasonml-community/reason-react-example
To run with the webpack development server run npm run server
and view in the browser at http://localhost:8000. Running in this environment provides hot reloading and support for routing; just edit and save the file and the browser will automatically refresh.
Note that any hot reload on a route will fall back to the root (/
), so ReasonReact.Router.dangerouslyGetInitialUrl
will likely be needed alongside the ReasonReact.Router.watchUrl
logic to handle routing correctly on hot reload refreshes or simply opening the app at a URL that is not the root.
To use a port other than 8000 set the PORT
environment variable (PORT=8080 npm run server
).
npm run clean
npm run build
npm run webpack:production
This will replace the development artifact build/Index.js
for an optimized version as well as copy src/index.html
into build/
. You can then deploy the contents of the build
directory (index.html
and Index.js
).
If you make use of routing (via ReasonReact.Router
or similar logic) ensure that server-side routing handles your routes or that 404's are directed back to index.html
(which is how the dev server is set up).
To enable dead code elimination, change bsconfig.json
's package-specs
module
from "commonjs"
to "es6"
. Then re-run the above 2 commands. This will allow Webpack to remove unused code.