Function placeholderValue

packages/cli/src/commands/batchRender.ts:123–141

(row: Record<string, unknown>, key: string, index: number)

}

function placeholderValue(row: Record<string, unknown>, key: string, index: number): string {
  if (key === "index") return String(index);
  if (!Object.hasOwn(row, key)) {
    throw new BatchRenderInputError(
      "Invalid output template",
      `Missing value for placeholder {${key}} in row ${index}.`,
    );
  }

  const value = row[key];
  if (typeof value === "string" || typeof value === "number" || typeof value === "boolean") {
    return String(value);
  }

  throw new BatchRenderInputError(
    "Invalid output template",
    `Placeholder {${key}} in row ${index} must resolve to a string, number, or boolean.`,
  );
}

export function resolveOutputTemplate(
  template: string,