Function sourceMapToLocationData

packages/utils/src/source-map.ts:82–115

(sourceMap: string)

}

export const sourceMapToLocationData = (sourceMap: string): FullLocationData => {
  let prevStartLine = 0;
  let prevStartColumn = 0;
  let prevEndLine = 0;
  let prevEndColumn = 0;
  let prevHint: PositionHint = PositionHint.START;

  return sourceMap.split(';').map((entry: string) => {
    const [startLineStr, startColumnStr, endLineStr, endColumnStr, positionHintStr] = entry.split(':');

    const startLine = startLineStr ? Number(startLineStr) : prevStartLine;
    prevStartLine = startLine;

    const startColumn = startColumnStr ? Number(startColumnStr) : prevStartColumn;
    prevStartColumn = startColumn;

    const endLine = endLineStr ? Number(endLineStr) : prevEndLine;
    prevEndLine = endLine;

    const endColumn = endColumnStr ? Number(endColumnStr) : prevEndColumn;
    prevEndColumn = endColumn;

    const hint: PositionHint = parsePositionHint(positionHintStr) ?? prevHint;
    prevHint = hint;

    return {
      location: {
        start: { line: startLine, column: startColumn },
        end: { line: endLine, column: endColumn },
      },
      positionHint: hint,
    };
  });
};

const parsePositionHint = (hint: string): PositionHint | undefined => {
  if (hint === '1') return PositionHint.END;