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Lwc Locker To Lws Migration

Category: Security  ·  Sub-category: web-security  ·  Last updated:
type:review
Migrating LWCs from Lightning Locker Service to Lightning Web Security (LWS) — flipping the org switch safely, identifying components likely to break, removing Locker workarounds that are now insecure, and validating third-party libraries that previously failed under SecureWindow/SecureElement proxies. NOT for Aura → LWC migration — see lwc/aura-to-lwc-migration. NOT for general LWC security review (XSS, public-API hardening) — see lwc/lwc-security and lwc/lwc-public-api-hardening.

From the source SKILL.md

Activate this skill when an org is preparing to flip from Lightning Locker Service (the old per-namespace JavaScript sandbox built on SecureWindow/SecureElement proxies) to Lightning Web Security (LWS), the modern replacement based on JavaScript realms and standards-based browser primitives. LWS went GA for LWC in Spring '23, became the default for new orgs shortly after, and Salesforce has announced Locker for LWC will be retired — every org will eventually run on LWS.

What this skill does

Lwc Locker To Lws Migration is a community-contributed Claude Code skill in the web-security sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/lwc-locker-to-lws-migration/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Lwc Locker To Lws Migration Claude Code skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 69,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/lwc-locker-to-lws-migration
curl -L https://claudskills.com/skills/lwc-locker-to-lws-migration/SKILL.md \
  -o ~/.claude/skills/lwc-locker-to-lws-migration/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/lwc-locker-to-lws-migration/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/lwc-locker-to-lws-migration/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\lwc-locker-to-lws-migration\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Attribution & license

More Security skills

Browse all Security skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all Security skills → Top 100 skills
Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills.  ·  What's New  ·  Install guide  ·  About  ·  llms.txt

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