`nsIScriptError` has been using a mix of 0-based and 1-based column number. bug 1864168 and bug 1864783 are going to switch some consumer of 0-based column number to 1-based. If there's any code in DevTools that listens to `nsIScriptError`s and expects the `columnNumber` being 0-based, it should be rewritten to expect 1-based column number, or maybe expect that "the column number is unknown".
Bug 1864786 Comment 0 Edit History
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`nsIScriptError` has been using a mix of 0-based and 1-based column number. bug 1864168 and bug 1864783 are going to switch some consumer of 0-based column number to 1-based. If there's any code in DevTools that listens to `nsIScriptError`s and expects the `columnNumber` being 0-based, it should be rewritten to expect 1-based column number, or maybe expect that "the column number base is unknown".