mux-lib/src/index.ts

import isPlainObject from "is-plain-object";
import invariant from "invariant";
import warning from "warning";

// 警告和报错

export { invariant, warning };

// 判断类型
export { isPlainObject };
export const isArray: ArrayConstructor["isArray"] = Array.isArray;

export const isFunction = (o: any): o is Function => typeof o === "function";

export const isBoolean = (o: any): o is boolean => typeof o === "boolean";

export const isEmptyObject = (o: any): o is Object =>
  JSON.stringify(o) === "{}";

export const isString = (o: any): o is string => typeof o === "string";

export const checkFunctionType = o =>
  Object.prototype.toString
    .call(o)
    .replace(/\[object\s(.*)\]/, (all, matched) => matched);

export const isGeneratorFunction = o =>
  checkFunctionType(o) === "GeneratorFunction";

export const isAsyncFunction = o => checkFunctionType(o) === "AsyncFunction";

// 常用的方法

export const returnSelf = arg => arg;

export const noop = () => {};

export const hasOwnProperty = (obj, key) =>
  Object.prototype.hasOwnProperty.call(obj, key);

export const mapToObj = (o: Map<any, any>) => {
  let a = {};
  o.forEach((v, k) => {
    a[k] = v;
  });
  return a;
};