People are generally happy with the development of JS the trends of always improving languages along with frameworks makes developing with JS makes developer increase in happiness for the third time in a row.
ES6 is good, TypeScript is gaining ground, people are moving away from Flow.
Angular is dead? Most don't even want to touch it again ( Great ). Ember hasn't moved a bit in three years with a declining of interest. I am also surprised no one is using preact. The Choice is now either React or Vue.js, I think Vue.js 3.0 will continue to move vue forward.
Given the amount of hype with GraphQL, I am surprised only 20% are actually using it. And nearly 50% are using Redux!
Backend is dominated by Express only, and Testing framework doesn't have a clear winner either.
And my biggest surprise is how Javascript turned from one of the most hated programming language ( besides PHP ? ) into being acceptable and loved.
I really wish other languages communities do a similar survey, Python, PHP, Ruby, Java, Rust etc... It will be interesting to see the trend and big picture.