New empty_assignment_linter

[MichaelChirico]

Part of #884

[codecov-commenter]

Codecov Report

Merging #1637 (1cbdf8a) into main (bda3739) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #1637   +/-   ##
=======================================
  Coverage   98.26%   98.27%           
=======================================
  Files          99      100    +1     
  Lines        4376     4394   +18     
=======================================
+ Hits         4300     4318   +18     
  Misses         76       76           

Impacted Files	Coverage Δ
R/empty_assignment_linter.R	100.00% <100.00%> (ø)

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

[IndrajeetPatil]

These should produce lints, right?

library(lintr)

{} -> x
x
#> NULL

lint(text = "{} -> x", linters = empty_assignment_linter())
lint(text = "{} ->> x", linters = empty_assignment_linter())

^{Created on 2022-10-08 with reprex v2.0.2}

P.S. Funny branch name 😆

[MichaelChirico]

These should produce lints, right?

yep; had left it as a TODO but it's a trivial addition; done

P.S. Funny branch name

😅

[IndrajeetPatil]

Cool stuff. Thanks!