What problem does it solve? Salesforce developers waste deploy cycles verifying changes that could be checked locally, and lose time when the Live Preview server does not reflect edits or source tracking reports conflicts. This Skill defines exactly which checks run offline (Prettier, ESLint, Code Analyzer, sfdx-lwc-jest), which require an org (Apex compilation, SOQL, FLS, Flow), and how to iterate on LWC and Apex before any deployment. ## Core Features & Use Cases - Live Preview workflows: Covers sf lightning dev app, sf lightning dev component, and sf lightning dev site, including the full reload matrix showing which changes hot-reload and which need a deploy plus server restart. - Offline gate composition: Documents the vf-check local gate (format, lint, analyzer, jest) with exit codes, coverage thresholds, and the fixture/harness pattern for previewing empty, error, and long-text component states without org records. - Source tracking hygiene: Explains sf project deploy preview, --dry-run check-only deploys, sf project retrieve start, and safe conflict resolution without abusing --ignore-conflicts. - Use Case: You are building a new LWC and the preview stops reflecting your edits after adding a new @api property. This Skill tells you the change is not hot-reloadable, and gives the exact deploy-and-restart recovery commands. ## Quick Start Ask the assistant to set up a local preview and offline verification loop for the LWC component you are currently editing against your scratch org.
