Sam and Ryan chat about two new EmberMap series, Forms and Async testing, as well as Sam's keynote at EmberCamp and the best way to avoid product gaps in open-source software. They also answer some listener questions.

Topics include:

• Forms (1:18)
• Splitting forms into containers and presenters
• Avoiding premature abstractions (7:03)
• Which components do you carry from project to project?
• Asynchronous testing (14:47)
• Testing animations
• Sam's keynote at EmberCamp on Product gaps (19:04)
• Product gaps at companies vs. in OSS
• Are small packages and convention over configuration at odds with each other?
• Convention over configuration that decomposes well
• The risk of bad high-level abstractions in OSS
• How to "finish" an OSS project

Questions:

• What's the state of TypeScript support in Ember? (48:15)
• When are observers actually appropriate to use? (54:57)
• Any tips on refactoring async relationships? (59:34)