facebook/immutable-js — pull request #69 by tgriesser (2014-08-16 13:54:36+00:00)
Title: Use dev build in package.json

When working in node, you'll typically want to have the unminified source for cases where you might want to inspect / step-through the code with a debugger. Similarly, when referencing the module client-side working with webpack, browserify, or similar the common practice is to provide the unminified build as there will be a separate step to optimize/minify the entire build.