@atlaskit/editor-plugin-table/dist/es2019/nodeviews/is-focus-only-change.js

Table plugin for the @atlaskit/editor

import { isExperimentEnabled } from '@atlaskit/platform-feature-experiments/is-experiment-enabled';
export const shallowEqualExcept = (previousValue, currentValue, ignoredKey) => {
  const previousKeys = Object.keys(previousValue);
  const currentKeys = Object.keys(currentValue);
  return previousKeys.length === currentKeys.length && currentKeys.every(key => key === ignoredKey || Object.prototype.hasOwnProperty.call(previousValue, key) && Object.is(previousValue[key], currentValue[key]));
};

/**
 * Returns true when editor focus is the only table plugin state value that changed.
 *
 * Table reducers preserve references for unchanged values. If a reducer rebuilds a value, this
 * returns false and callers take the original full-work path rather than skipping incorrectly.
 */
export const isFocusOnlyChange = (previousState, currentState) => previousState.editorHasFocus !== currentState.editorHasFocus && shallowEqualExcept(previousState, currentState, 'editorHasFocus');
export class FocusOnlyUpdateGuard {
  /** Returns true and records the state when this is a skippable focus-only update. */
  skipIfFocusOnly(state) {
    const lastProcessedState = this.lastProcessedState;
    if (lastProcessedState !== undefined && isFocusOnlyChange(lastProcessedState, state) && isExperimentEnabled('platform_editor_improve_inp')) {
      this.lastProcessedState = state;
      return true;
    }
    return false;
  }
  markProcessed(state) {
    this.lastProcessedState = state;
  }
  reset() {
    this.lastProcessedState = undefined;
  }
}