@gechiui/block-editor/build-module/components/inner-blocks/get-block-context.js

Generic block editor.

/**
 * External dependencies
 */
import { mapValues } from 'lodash';
/**
 * Block context cache, implemented as a WeakMap mapping block types to a
 * WeakMap mapping attributes object to context value.
 *
 * @type {WeakMap<string,WeakMap<string,*>>}
 */

const BLOCK_CONTEXT_CACHE = new WeakMap();
/**
 * Returns a cached context object value for a given set of attributes for the
 * block type.
 *
 * @param {Record<string,*>} attributes Block attributes object.
 * @param {GCBlockType}      blockType  Block type settings.
 *
 * @return {Record<string,*>} Context value.
 */

export default function getBlockContext(attributes, blockType) {
  if (!BLOCK_CONTEXT_CACHE.has(blockType)) {
    BLOCK_CONTEXT_CACHE.set(blockType, new WeakMap());
  }

  const blockTypeCache = BLOCK_CONTEXT_CACHE.get(blockType);

  if (!blockTypeCache.has(attributes)) {
    const context = mapValues(blockType.providesContext, attributeName => attributes[attributeName]);
    blockTypeCache.set(attributes, context);
  }

  return blockTypeCache.get(attributes);
}
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