[Bug] If // @ts-nocheck comment is placed on the line before actual code, but its loc.start.column is greater than firstStatement.loc.start.column, the nocheck directive is not reported, even though this is a valid TS pragma and it effectively suppresses all TS errors.

 /// @ts-nocheck
const a: true = false

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I don't think we need to compare loc columns here. Since singleline comments should be placed either on their own line or at the end of a line.
And if // @ts-nocheck is placed at the end of a line, it's no longer a valid TS pragma.

Oh oops. 🙈

Yeah, I understand that checking columns alone is a bug, my intention was not to report the following:

/* @ts-nocheck - should not be reported */ const a = 1;

The function I was going to write was something like this (I also missed adding a test for such a case or checking it actually fails at all):

function isPositionEarlierThan(
  a: TSESTree.Position,
  b: TSESTree.Position,
): boolean {
  if (a.line > b.line) {
    return false;
  }
  
  return a.line === b.line && a.column < b.column;
}

But I can see block comments with ts-nocheck don't disable type-checking and the lint rule covers this already.

I've changed my code accordingly, thanks 🙏

I think it's worth including my example in the test suite as well. That way we can prevent regressions in the future.

I used an eslint-disable comment over noFormat() since it doesn't handle disabling indentation checks.