Skip to content

Commit d619b46

Browse files
authored
Explain bin/dev
1 parent 7bd2e1f commit d619b46

File tree

1 file changed

+3
-1
lines changed

1 file changed

+3
-1
lines changed

README.md

Lines changed: 3 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -2,7 +2,9 @@
22

33
Use [esbuild](https://esbuild.github.io), [rollup.js](https://rollupjs.org), or [Webpack](https://webpack.js.org) to bundle your JavaScript, then deliver it via the asset pipeline in Rails. This gem provides installers to get you going with the bundler of your choice in a new Rails application, and a convention to use `app/assets/builds` to hold your bundled output as artifacts that are not checked into source control (the installer adds this directory to `.gitignore` by default).
44

5-
You develop using this approach by running the bundler in watch mode in a terminal with `yarn build --watch` (and your Rails server in another, if you're not using something like [puma-dev](https://github.com/puma/puma-dev)). Whenever the bundler detects changes to any of the JavaScript files in your project, it'll bundle `app/javascript/application.js` into `app/assets/builds/application.js` (and all other entry points configured). You can refer to the build output in your layout using the standard asset pipeline approach with `<%= javascript_include_tag "application", defer: true %>`.
5+
You develop using this approach by running the bundler in watch mode in a terminal with `yarn build --watch` (and your Rails server in another, if you're not using something like [puma-dev](https://github.com/puma/puma-dev)). You can also use `./bin/dev`, which will start both the Rails server and the JS build watcher (along with a CSS build watcher, if you're also using `cssbundling-rails`).
6+
7+
Whenever the bundler detects changes to any of the JavaScript files in your project, it'll bundle `app/javascript/application.js` into `app/assets/builds/application.js` (and all other entry points configured). You can refer to the build output in your layout using the standard asset pipeline approach with `<%= javascript_include_tag "application", defer: true %>`.
68

79
When you deploy your application to production, the `javascript:build` task attaches to the `assets:precompile` task to ensure that all your package dependencies from `package.json` have been installed via yarn, and then runs `yarn build` to process all the entry points, as it would in development. The latter files are then picked up by the asset pipeline, digested, and copied into public/assets, as any other asset pipeline file.
810

0 commit comments

Comments
 (0)