disabled space-before-function-paren adds a space between generic and function paren

Edited, initial version was not correct

I came across the weird and likely wrong behavior with formatting of the next lines of code

function foo<T>(x: T): T {
  return x
}

Even if I don’t pass --space-before-function-paren flag (default value is false), space is added between foo<T extends number> and (x: T),

so the result is:

function foo<T> (x: T): T { // <-- space between <T> and (x: T)
  return T
}

Could you please confirm it’s an issue?

[brodybits]

Thanks @havenchyk, I added the bug label with help wanted for now. A new test case would be very helpful.

[havenchyk]

@brodybits new info came.

import prettierx from 'prettierx'

const options = {
  spaceBeforeFunctionParen: false,
  generatorStarSpacing: true,
  yieldStarSpacing: true,
  singleQuote: true,
  semi: false,
  jsxSingleQuote: true,
  useTabs: true,
  endOfLine: 'lf',
  filepath: '/Users/havenchyk/projects/test-prettierx/index.ts',
  parser: 'typescript'
}

const text = 'const foo = function<T>(bar: T) { return bar }'

const formatted = prettierx.format(text, options)

console.log(formatted)

/**
 * const foo = function<T> (bar: T) {
 *   return bar
 * }
 */

Tried it with version 0.10. Am I doing formatting wrong? I’m also surprised it’s different from the result from CLI