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Lwc Public API Hardening

Category: Content  ·  Sub-category: content-misc  ·  Last updated:
lang:javascript
Use when an LWC exposes `@api` properties, `@api` methods, or design attributes in `<targetConfig>` and you need a defensive, predictable public contract. Covers runtime type coercion (the `@api` decorator does NOT enforce JS types — `recordId` is always a string even if you declared it Number), required-vs-optional `@api` validation in `connectedCallback`, getter/setter pairs for reactive normalisation, design-attribute typing in js-meta.xml (datasource picker, dataType, supported objects, default values, propertyType), kebab-case ↔ camelCase rules, and namespace prefix handling. NOT for component-to-component messaging design (see `component-communication`), NOT for App Builder exposure / surface targeting (see `lwc-app-builder-config`), NOT for Custom Property Editors for Flow (see `custom-property-editor-for-flow`).

From the source SKILL.md

Activate this skill when an LWC ships @api properties, @api methods, or admin-facing design attributes in <targetConfig> and the public surface needs to be defensive, well-typed at runtime, and survivable against unexpected input from parents, App Builder admins, Flow runtime, or programmatic instantiation. The fundamental thing to internalise: @api is a binding decorator, not a type checker. Anything you declare ends up as whatever JavaScript value the host hands you — most commonly a string, even when you wrote @api recordId; and your IDE shows a string annotation.

What this skill does

Lwc Public API Hardening is a community-contributed Claude Code skill in the content-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/lwc-public-api-hardening/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when an LWC exposes `@api` properties, `@api` methods, or design attributes in `<targetConfig>` and you need a defensive, predictable public contract. Covers runtime type coercion (the `@api` decorator does NOT enforce JS types — `recordId` is always a string even if you declared it Number), required-vs-optional `@api` validation in `connectedCallback`, getter/setter pairs for reactive normalisation, design-attribute typing in js-meta.

Who uses this skill

The Lwc Public API Hardening Claude Code skill is built for content creators, marketers, copywriters, SEO professionals, and editorial teams. 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-public-api-hardening
curl -L https://claudskills.com/skills/lwc-public-api-hardening/SKILL.md \
  -o ~/.claude/skills/lwc-public-api-hardening/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/lwc-public-api-hardening/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/lwc-public-api-hardening/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\lwc-public-api-hardening\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 Content skills

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

Browse all Content 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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