Closure Library v20200504

New Additions

• goog.module.AbstractModuleLoader extraEdges has been added as an optional parameter to the loadModules method.
• goog.module.AbstractModuleLoader the type of the extraEdges parameter of the loadModules method has been updated to map to a Set
• goog.loader.AbstractModuleManager addExtraEdge and removeExtraEdge methods have been added.
• Whitelist additional ARIA attributes in the HtmlSanitizer.
• Add concat method to iterables library

Backwards Incompatible Changes

• goog.debug.deepFreeze should now be imported with destructuring.
• goog.labs.collections.iterables renamed to goog.labs.collections.iters.
• goog.module.AbstractModuleLoader optional parameters have been merged into a single options bag.

Other Changes

• goog.module.AbstractModuleLoader migrate to ES6 syntax
• Remove an old Safari behaviour workaround in goog.globalEval. This will simplify future Trusted Types integration, as eval(trustedTypes.emptyScript) might be used, and that pattern does not require creating a Trusted Types policy.
• Add optional window object in the call to getScriptNonce.
• Removed references to deprecated parts of the Trusted Types API (window\.TrustedTypes and TrustedTypePolicyOptions\.createURL)
• Remove goog.defineClass's support for sealing instances
• Add scripts to package.json for serving the tests and demos locally.
• Defines Deferred::getLastValueForMigration.
• Move base.js Trusted Types policy creation to the conditional block creating the debug loaders to avoid creating the policy for binaries without the debug loader.
• Use about:blank iframe instead of an iframe with an empty source in goog.async.nextTick. Removed spurious document.write call.
• Remove noop method goog.tagUnsealableClass