0.49.0 breaks code when conditionally returning boolean values in functions

[swernerx]

Rollup is breaking my prepublish tool with the newest 0.49 - this is probably related to the new tree shaking which might be a little too intensive ;)

Input:

export function helper(value) {
  if (value) {
    return true
  }

  somethingElse()
}

Output:

function helper(value) {
  somethingElse();
}

export { helper };

REPL Link

It seems to affect boolean returns somehow... problem goes away when executing some other function.

[Rich-Harris]

Fixed in 0.49.1 😀

[dherges]

@Rich-Harris @lukastaegert and all the others involved: Thanks for the quick work to get the regressions fixed!

I think I hit the #1585 and #1588 and can confirm that it is now working again!