Function formatSnapshotDiffText

src/utils/output.ts:270–306

(data: Record<string, unknown>)

}

export function formatSnapshotDiffText(data: Record<string, unknown>): string {
  const baselineInitialized = data.baselineInitialized === true;
  const summaryRaw = (data.summary ?? {}) as Record<string, unknown>;
  const additions = toNumber(summaryRaw.additions);
  const removals = toNumber(summaryRaw.removals);
  const unchanged = toNumber(summaryRaw.unchanged);
  const useColor = supportsColor();
  const notices = readSnapshotWarnings(data);
  const noticesBlock = notices.length > 0 ? `${notices.join('\n')}\n` : '';
  if (baselineInitialized) {
    return `${noticesBlock}Baseline initialized (${unchanged} lines).\n`;
  }
  const rawLines = Array.isArray(data.lines) ? (data.lines as SnapshotDiffLine[]) : [];
  const contextLines = applyContextWindow(rawLines, 1);
  const lines = contextLines.map((line) => {
    const text = typeof line.text === 'string' ? line.text : '';
    if (line.kind === 'added') {
      const prefix = text.startsWith(' ') ? `+${text}` : `+ ${text}`;
      return useColor ? colorize(prefix, 'green') : prefix;
    }
    if (line.kind === 'removed') {
      const prefix = text.startsWith(' ') ? `-${text}` : `- ${text}`;
      return useColor ? colorize(prefix, 'red') : prefix;
    }
    return useColor ? colorize(text, 'dim') : text;
  });
  const body = lines.length > 0 ? `${lines.join('\n')}\n` : '';
  if (!useColor) {
    return `${noticesBlock}${body}${additions} additions, ${removals} removals, ${unchanged} unchanged\n`;
  }
  const summary = [
    `${colorize(String(additions), 'green')} additions`,
    `${colorize(String(removals), 'red')} removals`,
    `${colorize(String(unchanged), 'dim')} unchanged`,
  ].join(', ');
  return `${noticesBlock}${body}${summary}\n`;
}

export function formatScreenshotDiffText(data: ScreenshotDiffResult): string {
  const useColor = supportsColor();