Function generateCodeFrame

packages/qwik/src/optimizer/src/plugins/vite-utils.ts:110–147

(
  source: string,
  start: number | { line: number; column: number; lo: number } = 0,
  end?: number
)

}

export function generateCodeFrame(
  source: string,
  start: number | { line: number; column: number; lo: number } = 0,
  end?: number
): string {
  start = posToNumber(source, start);
  end = end || start;
  const lines = source.split(splitRE);
  let count = 0;
  const res: string[] = [];
  for (let i = 0; i < lines.length; i++) {
    count += lines[i].length + 1;
    if (count >= start) {
      for (let j = i - range; j <= i + range || end > count; j++) {
        if (j < 0 || j >= lines.length) {
          continue;
        }
        const line = j + 1;
        res.push(`${line}${' '.repeat(Math.max(3 - String(line).length, 0))}|  ${lines[j]}`);
        const lineLength = lines[j].length;
        if (j === i) {
          // push underline
          const pad = Math.max(start - (count - lineLength) + 1, 0);
          const length = Math.max(1, end > count ? lineLength - pad : end - start);
          res.push(`   |  ` + ' '.repeat(pad) + '^'.repeat(length));
        } else if (j > i) {
          if (end > count) {
            const length = Math.max(Math.min(end - count, lineLength), 1);
            res.push(`   |  ` + '^'.repeat(length));
          }
          count += lineLength + 1;
        }
      }
      break;
    }
  }
  return res.join('\n');
}

export function isWin(os: string): boolean {
  return os === 'win32';