A Sourcegraph extension for highlighting lines matching the currently hovered token on GitHub, Sourcegraph, and other tools.
Note: Using this extension on private code in the Sourcegraph browser extension requires a self-hosted Sourcegraph instance (because it needs access to the contents of the current file).
Source code on GitHub: https://github.com/sourcegraph/sourcegraph-extension-samples/tree/master/token-highlights
