# WP Rig theme framework and ESBuild migration > [!quote] > "In 3.1 I removed the rest of Gulp… and Gulp was using Babel" — moving the build to ESBuild for a large speed gain. Rob Ruiz on WP Rig: a less-popular but capable WordPress theme-dev framework supporting classic, hybrid, and block-based development via CLI; the build modernized off Gulp/Babel to ESBuild. ## Links - [[3. Resources/Permanent Notes/Developer-Tool Adoption Tracks Cognitive-Load Reduction Not Feature Count]] — build speed as overhead removed - [[3. Resources/MOCs/DevRel MOC]] — applies-in: the MOC lists this note under Connected Literature Notes (synthesis 2026-07-21 — run 4). ## Source - [Reader: Talk Devy To Me — WP Rig Deep Dive with Rob Ruiz](https://read.readwise.io/read/01ktwgk5jrrd5ema24ck6q887c) *(vault source note pending next Readwise sync)*