Function isBacktrackingSourcePosition

test/fixtures/snapshot/typescript.js:90071–90078

(sourceIndex, sourceLine, sourceCharacter)

                || pendingGeneratedCharacter !== generatedCharacter;
        }
        function isBacktrackingSourcePosition(sourceIndex, sourceLine, sourceCharacter) {
            return sourceIndex !== undefined
                && sourceLine !== undefined
                && sourceCharacter !== undefined
                && pendingSourceIndex === sourceIndex
                && (pendingSourceLine > sourceLine
                    || pendingSourceLine === sourceLine && pendingSourceCharacter > sourceCharacter);
        }
        function addMapping(generatedLine, generatedCharacter, sourceIndex, sourceLine, sourceCharacter, nameIndex) {
            ts.Debug.assert(generatedLine >= pendingGeneratedLine, "generatedLine cannot backtrack");
            ts.Debug.assert(generatedCharacter >= 0, "generatedCharacter cannot be negative");