Lightning Communities Developer Guide

Get Up to Speed with Lightning Communities
Develop Lightning Communities: The Basics
Customize the Look and Feel of a Lightning Template
Example: Build a Condensed Theme Layout Component
Develop Secure Code: Lightning Locker and Stricter CSP
Lightning Locker in Communities
Content Security Policy Restrictions in Communities
Analyze and Improve Community Performance
Connect Your Community to Your Content Management System
Report on Deflections: The Deflection Signals Framework
Deploy a Community from Sandbox to Production
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Lightning Locker in Communities

Lightning Locker is a powerful security architecture for Lightning components that enhances security by isolating Lightning components in their own namespace. Lightning Locker promotes best practices to improve the supportability of your code by allowing access only to supported APIs and eliminating access to non-published framework internals.

Lightning Locker is enabled for all Lightning components set to API version 40.0 and later. API version 40.0 corresponds to Summer ’17, when Lightning Locker was enabled for all orgs. Lightning Locker isn’t enabled for components with API version 39.0 and earlier.

You can disable Lightning Locker for a component by setting the component’s API version 39.0 or earlier. However, for consistency and ease of debugging, we recommend that you set the same API version for all components in your app, when possible.

For information about working with Lightning Locker when developing Lightning components, see “What is Lightning Locker?” in the Lightning Component Developer Guide.

For information on preparing your Lightning components code for Lightning Locker enablement, see “Salesforce Lightning CLI (Deprecated).”