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# Source maps Source maps are available (on current stable release, v0.6.x) even without explicit support from Sprockets in a sort of hackish way. _As such even if they generally work fine there are some limitations and edge case issues._ NOTE: Currently on `master` branch sourcemaps are work-in-progress and probably will integrate with the upcoming Sprockets 4 that has integrated support for them. #### Processor `source_map_enabled` flag To enable sourcemaps in the Sprockets processor you need to turn on the relative flag: ```ruby Opal::Processor.source_map_enabled = true # default ``` #### Sprockets debug mode The sourcemaps only work with Sprockets in debug mode because they are generated just for single files. ## Enable source maps ### Rails Rails has debug mode already enabled in development environment with the following line from `config/environments/development.rb`: ```ruby # Debug mode disables concatenation and preprocessing of assets. # This option may cause significant delays in view rendering with a large # number of complex assets. config.assets.debug = true ``` `opal-rails` also enables sourcemaps in development so with the standard setup you ready to go. ### Sinatra You can add `Opal::Server` as in the official example: [sinatra/config.ru](https://github.com/opal/opal/blob/0-6-stable/examples/sinatra/config.ru). ### Opal::Server `Opal::Server` implements sourcemaps and can be used alone or with `Rack::Cascade` in conjunction with other apps. ### Opal::Environment `Opal::Environment` is a bit lower level and doesn't support source maps by itself.
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9 entries across 9 versions & 1 rubygems