Function validateLayout

src/helpers/utils.js:468–498

(layout: Layout, contextName: string)

 * @throw  {Error}                Validation error.
 */
export function validateLayout(layout: Layout, contextName: string): void {
  contextName = contextName || "Layout";
  const subProps = ['x', 'y', 'w', 'h'];
  let keyArr = [];
  if (!Array.isArray(layout)) throw new Error(contextName + " must be an array!");
  for (let i = 0, len = layout.length; i < len; i++) {
    const item = layout[i];
    for (let j = 0; j < subProps.length; j++) {
      if (typeof item[subProps[j]] !== 'number') {
        throw new Error('VueGridLayout: ' + contextName + '[' + i + '].' + subProps[j] + ' must be a number!');
      }
    }

    if (item.i === undefined || item.i === null) {
      throw new Error('VueGridLayout: ' + contextName + '[' + i + '].i cannot be null!');
    }

    if (typeof item.i !== 'number' && typeof item.i !== 'string') {
      throw new Error('VueGridLayout: ' + contextName + '[' + i + '].i must be a string or number!');
    }

    if (keyArr.indexOf(item.i) >= 0) {
      throw new Error('VueGridLayout: ' + contextName + '[' + i + '].i must be unique!');
    }
    keyArr.push(item.i);

    if (item.static !== undefined && typeof item.static !== 'boolean') {
      throw new Error('VueGridLayout: ' + contextName + '[' + i + '].static must be a boolean!');
    }
  }
}

// Flow can't really figure this out, so we just use Object
export function autoBindHandlers(el: Object, fns: Array<string>): void {