package.json file at the root of your project
Use command Show npm module changelog to bring up select menu, select a module and this extension will try to open its changelog in a browser.
The extension will query NPM for selected module metadata, parses its repo address and tries to open (currently) CHANGELOG.md, CHANGELOG or CHANGELOG.txt at the root of the repository in the browser. If none of patterns exist, it will show an error message and does nothing.