You are situated inside of an R package source directory. The subdirectory R/ contains source files. The subdirectory tests/testthat/ contains corresponding tests. e.g. R/task.R is tested primarily in tests/testthat/test-task.R.
Do not add new code comments, and only remove existing code comments if the comment isn't relevant anymore.
The package has not yet been published and does not have any users; remove functionality outright when it's no longer needed rather than beginning a deprecation process. No need to worry about breaking changes.
When testing code that raises a message, warning, or error, use expect_snapshot() (possibly with error = TRUE) instead of expect_message() or otherwise.
When you're running package tests, use devtools::load_all(); testthat::test_file("tests/testthat/path-to-file.R"). If you encounter namespacing issues, don't delete tests that otherwise should work, and instead ask me what to do.
To get a sense for the style used to write and test code in this package, read R/task.R and tests/testthat/test-task.R, respectively. Notably, do not comment your code besides roxygen comments.
[context on relevant R dependencies pasted from btw here]