Opal Raw

A very fast opal setup - includes opal browser - uses guard to automatically compile your .js.ruby files as you save them - has opal and opal-browser vendored already in js files.

Open the project in a webserver:

python SimpleHTTPServer 3000

then open a browser at:

http://localhost:3000

Development

install the dependencies

bundle

launch guard:

guard

modify app.rb, save and refresh the browser

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extra infos:

build a stdlib module

File.open("math.js", 'w') { |file| file.write(Opal::Builder.build('math')) }

all stdlib modules:

https://github.com/opal/opal/tree/master/stdlib

useful stdlib modules:

• nodejs (file, dir, kernel, io ...)
• js (instanceof, typeof, call ...)