@antv/stat

--- install scripts ---
### prepublishOnly
npm run build-lib && npm run dist



--- package/src/stat.js (excerpt) ---
/**
 * @fileOverview Base Statistical functions
 * @author dxq613@gmail.com
 */

const Util = require('./util');

/**
 * 处理度量的统计函数
 * @class Stat
 */
class Stat {

  getDefaultCfg() {
    return {
      /**
       * 是否是统计对象
       * @type {Boolean}
       */
      isStat: true
    };
  }

  constructor(cfg) {
    Util.mix(this, this.getDefaultCfg(), cfg);
  }

  initDims(/* dims*/) {

  }

  /**
   * 统计对象关联的字段
   * @return {Array} 关联字段
   */
  getDims() {
    return this.dims;
  }

  getStatDims() {
    return this.getDims();
  }

  /**
   * 初始化统计对象
   * @chainable
   */
  init() {
    const self = this;
    let dims = self.dims;

    // 划分dims，当前版本仅支持 cross : 'x*y'
    if (Util.isString(dims)) {
      dims = dims.split('*');
      self.dims = dims;
    }
    // 嵌套统计函数
    if (dims && dims.isStat) {
      const nstat = dims;
      nstat.init();
      self.stat = nstat;
      dims = nstat.dims;
      self.dims = dims;
    }

    if (!dims) {
      dims = [];
      self.dims = dims;
    }
    self.initDims(dims);
  }

  /**
   * @protected
   * some thing to do before stat exec
   */
  preExecute(/* arrs*/) {

  }

  /**
   * Perform statistical transform
   * @param  {Array} arrs A collection of data arr
   * @return {Array} The transform of collection
   */
  exec(arrs) {
    const self = this;
    self.preExecute(arrs);
    const rst = [];
    if (this.stat) {
      arrs = this.stat.exec(arrs);
    }
    Util.each(arrs, function(arr) {
      const execResult = self.execArray

--- package/src/summary/percent-mixin.js (excerpt) ---
/**
 * @fileOverview 计算比例的通用类
 * @author dxq613@gmail.com
 */


const Util = require('../util');

module.exports = {
  exec(arrs) {
    const self = this;
    self.preExecute(arrs);
    if (this.stat) {
      arrs = this.stat.exec(arrs);
    }
    const rst = [];
    const totalData = Util.merge(arrs);
    const condition = self.getGroupCondition();
    const totalGroup = Util.groupToMap(totalData, condition);

    Util.each(arrs, function(arr) {
      let sub;
      if (self.innerCompare) {
        sub = self.execArray(arr);
      } else {
        sub = self.execArray(arr, totalGroup);
      }
      rst.push(sub);
    });
    return rst;
  },
  execArray(arr, totalGroup) {
    const self = this;
    const condition = self.getGroupCondition();
    const groups = Util.groupToMap(arr, condition);
    const rst = [];
    const dim = self.getStatDims()[0];

    Util.each(groups, function(sub, key) {
      const totalData = totalGroup ? totalGroup[key] : arr;
      const tmp = self.transform(sub, dim, totalData);
      rst.push(tmp);
    });
    return Util.merge(rst);
  }
};


--- package/lib/stat.js (excerpt) ---
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

/**
 * @fileOverview Base Statistical functions
 * @author dxq613@gmail.com
 */

var Util = require('./util');

/**
 * 处理度量的统计函数
 * @class Stat
 */

var Stat = function () {
  Stat.prototype.getDefaultCfg = function getDefaultCfg() {
    return {
      /**
       * 是否是统计对象
       * @type {Boolean}
       */
      isStat: true
    };
  };

  function Stat(cfg) {
    _classCallCheck(this, Stat);

    Util.mix(this, this.getDefaultCfg(), cfg);
  }

  Stat.prototype.initDims = function initDims() /* dims*/{};

  /**
   * 统计对象关联的字段
   * @return {Array} 关联字段
   */


  Stat.prototype.getDims = function getDims() {
    return this.dims;
  };

  Stat.prototype.getStatDims = function getStatDims() {
    return this.getDims();
  };

  /**
   * 初始化统计对象
   * @chainable
   */


  Stat.prototype.init = function init() {
    var self = this;
    var dims = self.dims;

    // 划分dims，当前版本仅支持 cross : 'x*y'
    if (Util.isString(dims)) {
      dims = dims.split('*');
      self.dims = dims;
    }
    // 嵌套统计函数
    if (dims && dims.isStat) {
      var nstat = dims;
      nstat.init();
      self.stat = nstat;
      dims = nstat.dims;
      self.dims = dims;
    }

    if (!dims) {
      dims = [];
      self.dims = dims;
    }
    self.initDims(dims);
  };

  /**
   * @protected
   * some thing to do before stat exec
   */


  Stat.prototype.pr

--- bundled output (OSV-MAL flagged — LLM scope expansion) ---

--- dist/stat.min.js (bundled) ---
!function(t,n){"object"==typeof exports&&"object"==typeof module?module.exports=n():"function"==typeof define&&define.amd?define([],n):"object"==typeof exports?exports.Stat=n():t.Stat=n()}("undefined"!=typeof self?self:this,function(){return function(t){function n(e){if(r[e])return r[e].exports;var o=r[e]={i:e,l:!1,exports:{}};return t[e].call(o.exports,o,o.exports,n),o.l=!0,o.exports}var r={};return n.m=t,n.c=r,n.d=function(t,r,e){n.o(t,r)||Object.defineProperty(t,r,{configurable:!1,enumerable:!0,get:e})},n.n=function(t){var r=t&&t.__esModule?function(){return t.default}:function(){return t};return n.d(r,"a",r),r},n.o=function(t,n){return Object.prototype.hasOwnProperty.call(t,n)},n.p="",n(n.s=13)}([function(t,n,r){function e(t,n){var r={};if(!n)return{0:t};if(!o.isFunction(n)){var e=n;n=function(t){for(var n="",r=0,o=e.length;r<o;r++)n+=t[e[r]].toString();return n}}return o.each(t,function(t){var e=n(t);r[e]?r[e].push(t):r[e]=[t]}),r}var o={each:r(14),mix:r(16),isString:r(17),isFunction:r(18),isNil:r(19),isArray:r(6),merge:function(t){for(var n=[],r=0;r<t.length;r++)n=n.concat(t[r]);return n},group:function(t,n){if(!n)return[t];var r=e(t,n),o=[];for(var i in r)r.hasOwnProperty(i)&&o.push(r[i]);return o},colValues:function(t,n){for(var r=[],e=0;e<t.length;e++){var i=t[e][n];o.isNil(i)||(o.isArray(i)?r=r.concat(i):r.push(i))}return r},sort:function(t,n){return t.sort(function(t,r){return t[n]-r[n]})},range:function(t,n){for(var r=-1/0,e=1/0,i=0;i<t.length;i++){var u=t[i];if(u&&!o.isNil(u[n])){var a=u[n];a>r&&(r=a),a<e&&(e=a)}}return r<e&&(e=r),[e,r]},groupToMap:e};t.exports=o},function(t,n,r){var e=r(3),o=r(0),i=function(t){function n(){return function(t,n){if(!(t instanceof n))throw new TypeError("Cannot call a class as a function")}(this,n),function(t,n){if(!t)throw new ReferenceError("this hasn't been initialised - super() hasn't been called");return!n||"object"!=typeof n&&"function"!=typeof n?t:n}(this,t.apply(this,arguments))}return function(t,n){if("function"!

--- build/stat.js (bundled) ---
(function webpackUniversalModuleDefinition(root, factory) {
	if(typeof exports === 'object' && typeof module === 'object')
		module.exports = factory();
	else if(typeof define === 'function' && define.amd)
		define([], factory);
	else if(typeof exports === 'object')
		exports["Stat"] = factory();
	else
		root["Stat"] = factory();
})(typeof self !== 'undefined' ? self : this, function() {
return /******/ (function(modules) { // webpackBootstrap
/******/ 	// The module cache
/******/ 	var installedModules = {};
/******/
/******/ 	// The require function
/******/ 	function __webpack_require__(moduleId) {
/******/
/******/ 		// Check if module is in cache
/******/ 		if(installedModules[moduleId]) {
/******/ 			return installedModules[moduleId].exports;
/******/ 		}
/******/ 		// Create a new module (and put it into the cache)
/******/ 		var module = installedModules[moduleId] = {
/******/ 			i: moduleId,
/******/ 			l: false,
/******/ 			exports: {}
/******/ 		};
/******/
/******/ 		// Execute the module function
/******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
/******/
/******/ 		// Flag the module as loaded
/******/ 		module.l = true;
/******/
/******/ 		// Return the exports of the module
/******/ 		return module.exports;
/******/ 	}
/******/
/******/
/******/ 	// expose the modules object (__webpack_modules__)
/******/ 	__webpack_require__.m = modules;
/******/
/******/ 	// expose the module cache
/******/ 	__webpack_require__.c = installedModules;
/******/
/******/ 	// define getter function for harmony exports
/******/ 	__webpack_require__.d = function(exports, name, getter) {
/******/ 		if(!__webpack_require__.o(exports, name)) {
/******/ 			Object.defineProperty(exports, name, {
/******/ 				configurable: false,
/******/ 				enumerable: true,
/******/ 				get: getter
/******/ 			});
/******/ 		}
/******/ 	};
/******/
/******/ 	// getDefaultExport function for compatibility with non-harmony modules
/******/ 	__webpac