About Me #

I'm Anthony Frehner, a frontend web developer and web specification enthusiast. I currently work at Shopify.

A lead developer Unified Polaris Web Components for Admin. Lead developer of the custom lexer and parser for responsive values.
A member of Shopify's internal Technical Alignment Group, which aligns component APIs across all platforms on Shopify.
The lead developer of Hydrogen-React, a set of unopinionated commerce components for React.
Developer on the Hydrogen framework, Shopify's official headless solution for e-commerce.
Developer on Shopify Checkout, the lifeblood of every Shopify store.

I love working in open source and on web standards/specs. Some contributions are:

Proposed and championed what eventually became the new CSS dvh, lvh, svh units
Updated the Container Query implementation in WebKit to fix incorrect behavior of container queries across the shadow dom; see my blog post for more details
Gained resolution on named Container Query behavior in the CSSWG; updated WPTs to test that behavior; updated WebKit implementation to match specification. See Fixing Container Queries Pt 2
Implemented the majority of the TC39 test262 tests for the Set.union method
Updated the Link Area Delegation proposal in OpenUI to specify certain behaviors and pseudo-classes, after proposing those things be added.
Wrote The Modern Guide to Packaging Your JavaScript Library
Added a couple of minor tests ^{1 2} to Web Platform Tests
Was a core contributor to single-spa
Provided minor feedback on the Navigation API and Import Maps specifications

Before writing articles here, I would write articles in other places, and also occasionally give conference talks. Check them out: