[WorldMaker]

Something of a tangent: with Automatic Semicolon Insertion (ASI), JS is a white-space influenced language. Some of prettier's defaults are directly related to ASI, such as the way it often wraps things in extra ("unnecessary") parentheses, especially JSX but also anything complicated and multi-line especially after keywords like `return`. (`return` is the trickiest under ASI, so prettier's defaults seem that conservative in large part because of `return`.)

As someone who appreciates `{ "semi": false }` in my prettierrc, I take a lot of advantage of JS' ASI and find prettier's behavior interesting and conservative, but useful.