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Modest Maps JS is a BSD-licensed display and interaction library for tile-based maps in Javascript.

Our intent is to provide a minimal, extensible, customizable, and free display library for discriminating designers and developers who want to use interactive maps in their own projects. Modest Maps provides a core set of features in a tight, clean package, with plenty of hooks for additional functionality.



This package includes a copy of YUICompressor, which requires a version of Java on your system. To create a new build of Modest Maps (only necessary for development), run make from the root directory.

Developing with npm:

Modest Maps includes a package.json file to guide usage of its code on the server-side, and to handle certain dependencies.

To install developer dependencies - needed for documentation and tests - you'll need npm:

npm install --dev


Tests require expresso to be installed by npm, as noted above. To run tests,

make tests