Function positionLength

src/sourcemap.ts:118–127

(input: string, start = 0, end = input.length)

}

function positionLength(input: string, start = 0, end = input.length): Position {
  let match: RegExpExecArray;
  let line = 0;
  lineBreakG.lastIndex = start;
  while ((match = lineBreakG.exec(input)) && match.index < end) {
    ++line;
    start = match.index + match[0].length;
  }
  return {line, column: end - start};
}

function positionSubtract(b: Position, a: Position): Position {
  return b.line === a.line ? {line: 0, column: b.column - a.column} : {line: b.line - a.line, column: b.column};