Function getTextBlock

src/linter.worker.ts:21–57

(text: string, startPosition: number, endPosition: number)

};

function getTextBlock(text: string, startPosition: number, endPosition: number) {
  if (startPosition > endPosition || startPosition < 0 || endPosition > text.length) {
    throw new Error("Invalid positions provided");
  }

  let startLineNumber = 1;
  let startColumn = 1;
  let endLineNumber = 1;
  let endColumn = 1;

  for (let i = 0, currentLine = 1, currentColumn = 1; i < text.length; i += 1) {
    if (i === startPosition) {
      startLineNumber = currentLine;
      startColumn = currentColumn;
    }

    if (i === endPosition) {
      endLineNumber = currentLine;
      endColumn = currentColumn;
      break;
    }

    if (text[i] === "\n") {
      currentLine += 1;
      currentColumn = 0;
    }

    currentColumn += 1;
  }

  return {
    startLineNumber,
    startColumn,
    endLineNumber,
    endColumn,
  };
}

self.addEventListener("message", (event) => {
  const { code, id, config } = event.data;