browser

Flag a leftover browser() call. browser() opens R’s interactive debugger and is meant to be removed before code is committed; in a non-interactive session it silently does nothing, so it lingers unnoticed.

Only a call that resolves to base R’s browser is flagged—a same-named user function is left alone. The safe-delete fix is offered only for a browser() that is a direct statement (of a block or the file top level); in any other position it is withheld so the edit can’t break syntax.

This rule is enabled by default.

A browser() call left in after debugging:

f <- function(x) {
  browser()
  x + 1
}

warning: browser
 --> example.R:2:3
  |
2 |   browser()
  |   ^^^^^^^^^ leftover `browser()` debugging call
  = help: Remove the `browser()` call.

After applying the fix:

f <- function(x) {
  x + 1
}