Safe Browsing v4 Crash Rate Shield Study

install

npm install
npm run build

at second shell/prompt, watch files for changes to rebuild:

npm run watch

in Firefox:

1. about:config, set
   1. extensions.legacy.enabled to true
   2. xpinstall.signatures.required to false
2. about:debugging > [load temporary addon] > choose dist/addon.xpi`
3. tools > Web Developer > Browser Toolbox