Function validateLayout

src/core/layout.ts:478–509

(
  layout: Layout,
  contextName: string = "Layout"
)

 * @throws Error if layout is invalid
 */
export function validateLayout(
  layout: Layout,
  contextName: string = "Layout"
): void {
  const requiredProps = ["x", "y", "w", "h"] as const;

  if (!Array.isArray(layout)) {
    throw new Error(`${contextName} must be an array!`);
  }

  for (let i = 0; i < layout.length; i++) {
    const item = layout[i];
    if (item === undefined) continue;

    for (const key of requiredProps) {
      const value = item[key];
      if (typeof value !== "number" || Number.isNaN(value)) {
        throw new Error(
          `ReactGridLayout: ${contextName}[${i}].${key} must be a number! ` +
            `Received: ${String(value)} (${typeof value})`
        );
      }
    }

    if (item.i !== undefined && typeof item.i !== "string") {
      throw new Error(
        `ReactGridLayout: ${contextName}[${i}].i must be a string! ` +
          `Received: ${String(item.i)} (${typeof item.i})`
      );
    }
  }
}