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import { snakeCase } from 'lodash';
import { camelCase, kebabCase, mapKeys, transform } from 'lodash/fp';
import React, { useEffect } from 'react';
import { useHistory, useLocation } from 'react-router-dom';

export type SearchParamObject<ParamList extends string> = {
  [key in ParamList]: string;
};

export interface SetSearchParamAction<ParamList extends string> {

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export async function asyncReduce<IterationItem, AccValue>(
  array: IterationItem[],
  reducer: (accumulate: AccValue, current: IterationItem) => AccValue | Promise<AccValue>,
  initValue: AccValue,
): Promise<AccValue> {
  let accumulate = typeof initValue === 'object' ? Object.create((initValue as unknown) as object) : initValue;

  for (const item of array) {
    accumulate = await reducer(accumulate, item);
  }

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import React, { useState, useEffect, useRef } from 'react';
import clamp from 'lodash/clamp';

export type VScrollController = { scrollTo: (top: number) => void };

const DEFAULT_DURATION = '200ms';
const DEFAULT_TIMEING_FUNCTION = 'ease-in-out';

/**
 * virtual scroll 的实现

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export interface UseEchartsOptions {
  /**
   * render root
   */
  renderRootRef: React.RefObject<HTMLDivElement | HTMLCanvasElement>;
  /**
   * `setOption` 1st param object
   */
  echartsOption: EChartOption;
  /**

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function toCamelCase(str) {
    return str.toLowerCase().replace(/(?:(^.)|(\s+.))/g, function(match) {
        return match.charAt(match.length-1).toUpperCase();
    });
}

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export const debounce: <T extends []>(fn: (...args: T) => void, wait: number) => (...args: T) => void = (fn, wait) => {
  let timeout = -1;
  return (...args) => {
    if (timeout !== -1) clearTimeout(timeout);
    timeout = setTimeout(() => {
      fn(...args);
    }, wait);
  };
};

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const { createFilter } = require("@rollup/pluginutils");

const pathTemplate =(path)=> `
  var path = ${path};
  export default path;
`

module.exports = function filePath(
  options = {
    include: ["**/*.ejs"],

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/**
 * 可选的 组件注销时调用的回调函数
 *
 * 可以用来清理副作用，避免内存泄漏
 */
type HandlerCleanup = VoidFunction

/**
 * 组件捕获后执行的回调函数
 */

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const DEFAULT_POLLING_INTERVAL = 300

interface Polling {
  (cb: () => void, timeout?: number): {
    /** stop polling */
    stopPolling: () => void
  }
}

/**

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Flow语法入门

qyfeng03

在文件中开启flow检查

// @flow