vue3中使用vue-router4.x使用hooks封装切换路由函数

在vue3中使用vue-router来跳转时，每次都要引入vue-router，很麻烦，使用hooks封装之后，很方便。

const REDIRECT_NAME = 'Redirect';
const BASE_PATH = '/myapp/home';
import { unref } from 'vue';
import { useRouter } from 'vue-router';

function isString(val) {
  const type = Object.prototype.toString.call(val);
  if (type === '[object string]') {
    return true;
  }
  return false;
}

function handleError(e) {
  console.error(e);
}

// 切换路由
export function useGo(_router) {
  let router;
  if (!_router) {
    router = useRouter();
  }
  const { push, replace } = _router || router;
  function go(opt, is_replace = false) {
    if (!opt) return;
    if (isString((opt = BASE_PATH))) {
      is_replace ? replace(opt).catch(handleError) : push(opt).catch(handleError);
    } else {
      const o = opt;
      is_replace ? replace(o).catch(handleError) : push(o).catch(handleError);
    }
  }
  return go;
}

/**
 * @description: 重新跳转当前页面
 */
export const useRedo = _router => {
  const { push, currentRoute } = _router || useRouter();
  const { query, params = {}, name, fullPath } = unref(currentRoute.value);
  function redo() {
    return new Promise(resolve => {
      if (name === REDIRECT_NAME) {
        resolve(false);
        return;
      }
      if (name && Object.keys(params).length > 0) {
        params['_redirect_type'] = 'name';
        params['path'] = String(name);
      } else {
        params['_redirect_type'] = 'path';
        params['path'] = fullPath;
      }
      push({ name: REDIRECT_NAME, params, query }).then(() => resolve(true));
    });
  }
  return redo;
};