Function formatValidationErrors

scripts/changes/changes.ts:357–384

(errors: ValidationError[])

 * Formats validation errors for display
 */
export function formatValidationErrors(errors: ValidationError[]): string {
  let errorsByPackageDirName: Record<string, ValidationError[]> = {};
  for (let error of errors) {
    if (!errorsByPackageDirName[error.packageDirName]) {
      errorsByPackageDirName[error.packageDirName] = [];
    }
    errorsByPackageDirName[error.packageDirName].push(error);
  }

  let lines: string[] = [];

  for (let [packageDirName, packageErrors] of Object.entries(
    errorsByPackageDirName,
  )) {
    lines.push(`📦 ${packageDirName}:`);
    for (let error of packageErrors) {
      lines.push(`   ${error.file}: ${error.error}`);
    }
    lines.push("");
  }

  let packageCount = Object.keys(errorsByPackageDirName).length;
  lines.push(
    `Found ${errors.length} error${errors.length === 1 ? "" : "s"} in ${packageCount} package${packageCount === 1 ? "" : "s"}`,
  );

  return lines.join("\n");
}

/**
 * Checks if content starts with "BREAKING CHANGE: " (case-insensitive,