CommandStack

常见的 redo, undo操作. 继承 events.

Quick start

pnpm add @zstark/command-stack

const cs = new CommandStack({ /* handlers */ });

// 记录
cs.dispatch({
    type: 'create.shape',
    context: { /* any */ },
});

// redo undo
cs.redo();
cs.undo();

exmaple

Live Demo

pnpm instsall
pnpm build:example
pnpm dev

Options

~~处理程序可以是 Promise.~~

• handlers?: Record<ActionTypeEnum, handler>
• options?: { maxLength: number }

Methods

• redo: () => void. 下一步
• undo: () => void. 上一步
• dispatch: (action: Action) => void. 记录行为
• excute () => void. 执行操作. 一般用不到

Action

type Action = {
    type: string; // 操作标识
    context: any; // 上下文
}

TODO

• [ ] handlers 支持异步.
  • [ ] excute
• [ ] ~~合并操作??~~