Framework

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• Extended support for TypeScript 3.2
• Improved runtime support for using and conditionally loading polyfills
• before and after middleware for stores

CLI

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• Improved build support for using and conditionally loading polyfills
• Assertion templates for testing complex widgets
• Extended support in Build Time Rendering for StateHistory routing
• Dojo Blocks - Node.js execution during build time rendering
• Consolidated watch option for build app command that supports automatic refreshing the browser

Upgrade Path

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• Continue to evolve the upgrade command for migration of future major version updates.