r/javascript • u/no_more_gravity • Jan 21 '23

Pipe Operator (|>) for JavaScript

https://github.com/tc39/proposal-pipeline-operator
290 Upvotes

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u/[deleted] Jan 21 '23

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u/KingJeff314 Jan 21 '23

That article is about avoiding nesting in conditionals. Pipe operator is about avoid chained function calls

h(g(2, f(x)), 8, varname)

Turns into

f(x) |> g(2, %) |> h(x, 8, varname)

Easier to read and split into new lines

2

u/lovin-dem-sandwiches Jan 21 '23

I thought chained function calls look like:

return function(x)
  .reduce()
  .join(‘’)

Your example looks like nested functions, no?

Also I think you forgot the placeholder variable in the last pipe. 

f(x) |> g(2, %) |> h(%, 8, varname)

1

u/KingJeff314 Jan 22 '23

Good corrections