WebExtensions API Mock

Automatically generated sinon stubs for the WebExtensions API, designed to make browser extension testing easy. Version 1.0.0 uses the Firefox 72.0.2 schema and provides TypeScript types. Sinon is a peer dependency, not bundled, to avoid instanceof issues. Includes API and CLI to update schema to latest stable Firefox via webextensions-schema. Produces a fresh sandbox per call, with sinonSandbox exposed. Ideal for unit testing WebExtensions against sinon assertions and stubs.