Tracking server time
Logging client-side exceptions
Google Analytics... kind of
"What's the mean time to interactive for Shipper Flow using a mobile device in North America?"
Collect actual user data in production
RUM tells us where to focus, Synthetic is our debugger
Home-rolled RUM about to go up
Will trial against other solutions
Homepage "spike" of optimization techniques
We picked a winner: Typescript
One live project!
DLS ported before the end of the year
Static compiling in "loose" mode
Problem: state management
DLS already running prettier
DLS already running SCSS linting
DLS already running "critital" ESLint set
Same improvements for Static
Revisit ESLint rules for relevance
Add sets like eslint-a11y
Encode our best practices in static analysis, when possible