TypeScript lodash.isEqual函數代碼示例

 private processImage(key, value, options) {
   if (_.isEqual(key, 'icon') || _.isEqual(key, 'image') || _.endsWith(key, 'Icon') || _.endsWith(key, 'Image')) {
     options[key] = resolveAssetSource(value);
   }
 }

 /**
  * Compares current variables with previous ones.
  *
  * @param  {string}  queryName  Query's name
  * @param  {any}     variables  current variables
  * @return {boolean}            comparasion result
  */
 function equalVariablesOf(queryName: string, variables: any): boolean {
   return isEqual(lastQueryVariables[queryName], variables);
 }

 initiallySelectedSubtotalRows.forEach((sp)=> {
     if (_.isEqual(node.sectorPath(), sp))
         node.toggleSelect(true);
 });

 return (p: FixtureStateProps) => isEqual(p.elementId, elementId);

 /**
  * Compares current variables with previous ones.
  *
  * @param  {string}  queryName  Query's name
  * @param  {any}     variables  current variables
  * @return {boolean}            comparasion result
  */
 function equalVariablesOf(queryName: string, variables: any): boolean {
   return lastQueryVariables.hasOwnProperty(queryName) && isEqual(lastQueryVariables[queryName], variables);
 }

function stateMonitor(state: State, customInitialState: State) {
  let destroyed = false;
  let ignoredProps: string[] = [];
  let changeHandlers: ChangeHandlerFn[] | undefined = [];
  let initialState: State;

  setInitialState(customInitialState);

  function setInitialState(innerCustomInitialState: State) {
    // state.toJSON returns a reference, clone so we can mutate it safely
    initialState = cloneDeep(innerCustomInitialState) || cloneDeep(state.toJSON());
  }

  function removeIgnoredProps(innerState: State) {
    ignoredProps.forEach(path => {
      set(innerState, path, true);
    });
    return innerState;
  }

  function getStatus(): StateStatus {
    // state.toJSON returns a reference, clone so we can mutate it safely
    const currentState = removeIgnoredProps(cloneDeep(state.toJSON()));
    const isClean = isEqual(currentState, initialState);

    return {
      clean: isClean,
      dirty: !isClean,
    };
  }

  function dispatchChange(type: string | null = null, keys: string[] = []) {
    const status = getStatus();
    if (!changeHandlers) {
      throw new Error('Change handlers is undefined, this object has been destroyed');
    }
    changeHandlers.forEach(changeHandler => {
      changeHandler(status, type, keys);
    });
  }

  function dispatchFetch(keys: string[]) {
    dispatchChange('fetch_with_changes', keys);
  }

  function dispatchSave(keys: string[]) {
    dispatchChange('save_with_changes', keys);
  }

  function dispatchReset(keys: string[]) {
    dispatchChange('reset_with_changes', keys);
  }

  return {
    setInitialState(innerCustomInitialState: State) {
      if (!isPlainObject(innerCustomInitialState)) {
        throw new TypeError('The default state must be an object');
      }

      // check the current status
      const previousStatus = getStatus();

      // update the initialState and apply ignoredProps
      setInitialState(innerCustomInitialState);
      removeIgnoredProps(initialState);

      // fire the change handler if the status has changed
      if (!isEqual(previousStatus, getStatus())) {
        dispatchChange();
      }
    },

    ignoreProps(props: string[]) {
      ignoredProps = ignoredProps.concat(props);
      removeIgnoredProps(initialState);
      return this;
    },

    onChange(callback: ChangeHandlerFn) {
      if (destroyed || !changeHandlers) {
        throw new Error('Monitor has been destroyed');
      }
      if (typeof callback !== 'function') {
        throw new Error('onChange handler must be a function');
      }

      changeHandlers.push(callback);

      // Listen for state events.
      state.on('fetch_with_changes', dispatchFetch);
      state.on('save_with_changes', dispatchSave);
      state.on('reset_with_changes', dispatchReset);

      // if the state is already dirty, fire the change handler immediately
      const status = getStatus();
      if (status.dirty) {
        dispatchChange();
      }

      return this;
//.........這裏部分代碼省略.........

 scope.$watch(prop, (next, prev) => {
   if (isUndefined(next) || isEqual(next, prev)) {
     return;
   }
   scope.setAppData(keyPath, next);
 });

 return allowBoolOrArray.some(item => isEqual(item, path))

 private processColor(key: string, value: any, options: Record<string, any>) {
   if (_.isEqual(key, 'color') || _.endsWith(key, 'Color')) {
     options[key] = this.colorService.toNativeColor(value);
   }
 }

 return keysA.every(key => isEqual(a[key], b[key]));