What are your thoughts on the new Pipeline operator being proposed for JavaScript?

Currently they are working out the flavor of the syntax. Looks like it's between Hack and F# syntax.

Hack Flavor

Provides explicit placeholders. The operation pipes the previous result to the parameter holding the % sign.

value |> one(%) |> two(%) |> three(%)

value 
|> one('foo', %) 
|> two('bar', %) 
|> three('baz', %)

F# Flavor

Provides implicit syntax but could easily be paired with lambdas for more complex pipelines.

value |> one |> two |> three

value 
|> x => one('foo', x) 
|> x => two('bar', x) 
|> x => three('baz', x)

My Hot Take

Personally I don't like the Hack Flavor. I mainly crave the implicit syntax from F#. Adding an explicit special character to act as a placeholder seems rather annoying.

However, it sounds like the F# flavor comes with some performance pitfalls and could be more difficult to use with async code.

What do you think?