本文整理汇总了TypeScript中reducers/undoHistory.computeUndoStacks函数的典型用法代码示例。如果您正苦于以下问题：TypeScript computeUndoStacks函数的具体用法？TypeScript computeUndoStacks怎么用？TypeScript computeUndoStacks使用的例子？那么, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了computeUndoStacks函数的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的TypeScript代码示例。
示例1: test
test('should store data when relevant actions dispatched', () => {
const hist0 = produce(state.undoHistoryState, (draft) => {
draft.future.push(draft);
});
const hist1 = computeUndoStacks(hist0, newFSA(WATCHED_ACTION), state, mutatedState, config);
const hist2 = computeUndoStacks(hist1, newFSA(WATCHED_ACTION), mutatedState, state, config);
// Expect history to change
expect(hist1).not.toEqual(hist0);
// Erases future
expect(hist0.future).toHaveLength(1);
expect(hist1.future).toHaveLength(0);
// Add present to past if present did not exist
expect(hist0.past).toHaveLength(0);
expect(hist0.present).toBeUndefined(); // Present did not exist
expect(hist1.past).toHaveLength(1);
expect(hist1.past[0]).toEqual(pick(state, config.whitelist));
// Set new present
const present1 = pick(mutatedState, config.whitelist);
expect(hist1.present).toEqual(present1);
expect(hist1.present).not.toEqual(pick(state, config.whitelist)); // Just make sure both states are different
// Add present to past if present exists
expect(hist2.past).toHaveLength(2);
expect(hist2.past[1]).toEqual(present1);
expect(hist2.present).toEqual(pick(state, config.whitelist));
});