--quiet mode prevents 0 exit code

[steveszc]

Noting this mostly for visibility for future travelers. Not clear if there is even a fix (other than a patch-package).
Another note: This is related to #394, but is not fixable by pinning to eslint@8.24.

eslint --quiet mode prevents eslint from producing a 0 exit code when eslint-formatter-todo is used and all lint errors are marked as todos.

This is due to an issue in eslint itself, originally noted here #394 (comment)

When the --quiet flag is present eslint filters out non-error results before passing the results into the formater, which means eslint-formatter-todo never even sees the errors to mutate them into todos, but when eslint later calculates the error code it does so based on the original unfiltered results.

https://github.com/eslint/eslint/blob/740b20826fadc5322ea5547c1ba41793944e571d/lib/cli.js#L427-L443

Since this is an issue in eslint itself, and changing this in eslint is probably not feasible, I am noting a potential fix via patch-package here:

// patches/eslint+8.24.0.patch

diff --git a/node_modules/eslint/lib/cli.js b/node_modules/eslint/lib/cli.js
index 2fca65c..1cfcd2b 100644
--- a/node_modules/eslint/lib/cli.js
+++ b/node_modules/eslint/lib/cli.js
@@ -407,7 +407,7 @@ const cli = {
             resultsToPrint = ActiveESLint.getErrorResults(resultsToPrint);
         }
 
-        if (await printResults(engine, resultsToPrint, options.format, options.outputFile)) {
+        if (await printResults(engine, results, options.format, options.outputFile)) {
 
             // Errors and warnings from the original unfiltered results should determine the exit code
             const { errorCount, fatalErrorCount, warningCount } = countErrors(results);