Function computePositionOfLineAndCharacter

test/fixtures/snapshot/typescript.js:10311–10335

(lineStarts, line, character, debugText, allowEdits)

    ts.getPositionOfLineAndCharacter = getPositionOfLineAndCharacter;
    /* @internal */
    function computePositionOfLineAndCharacter(lineStarts, line, character, debugText, allowEdits) {
        if (line < 0 || line >= lineStarts.length) {
            if (allowEdits) {
                // Clamp line to nearest allowable value
                line = line < 0 ? 0 : line >= lineStarts.length ? lineStarts.length - 1 : line;
            }
            else {
                ts.Debug.fail("Bad line number. Line: ".concat(line, ", lineStarts.length: ").concat(lineStarts.length, " , line map is correct? ").concat(debugText !== undefined ? ts.arraysEqual(lineStarts, computeLineStarts(debugText)) : "unknown"));
            }
        }
        var res = lineStarts[line] + character;
        if (allowEdits) {
            // Clamp to nearest allowable values to allow the underlying to be edited without crashing (accuracy is lost, instead)
            // TODO: Somehow track edits between file as it was during the creation of sourcemap we have and the current file and
            // apply them to the computed position to improve accuracy
            return res > lineStarts[line + 1] ? lineStarts[line + 1] : typeof debugText === "string" && res > debugText.length ? debugText.length : res;
        }
        if (line < lineStarts.length - 1) {
            ts.Debug.assert(res < lineStarts[line + 1]);
        }
        else if (debugText !== undefined) {
            ts.Debug.assert(res <= debugText.length); // Allow single character overflow for trailing newline
        }
        return res;
    }
    ts.computePositionOfLineAndCharacter = computePositionOfLineAndCharacter;
    /* @internal */
    function getLineStarts(sourceFile) {