cione-comp-lib/es/node_modules/echarts/lib/data/DataDiffer.mjs

`$ yarn add cione-comp-lib` 或者 `$ npm i cione-comp-lib -S`

function dataIndexMapValueLength(valNumOrArrLengthMoreThan2) {
  return valNumOrArrLengthMoreThan2 == null ? 0 : valNumOrArrLengthMoreThan2.length || 1;
}
function defaultKeyGetter(item) {
  return item;
}
var DataDiffer = function() {
  function DataDiffer2(oldArr, newArr, oldKeyGetter, newKeyGetter, context, diffMode) {
    this._old = oldArr;
    this._new = newArr;
    this._oldKeyGetter = oldKeyGetter || defaultKeyGetter;
    this._newKeyGetter = newKeyGetter || defaultKeyGetter;
    this.context = context;
    this._diffModeMultiple = diffMode === "multiple";
  }
  DataDiffer2.prototype.add = function(func) {
    this._add = func;
    return this;
  };
  DataDiffer2.prototype.update = function(func) {
    this._update = func;
    return this;
  };
  DataDiffer2.prototype.updateManyToOne = function(func) {
    this._updateManyToOne = func;
    return this;
  };
  DataDiffer2.prototype.updateOneToMany = function(func) {
    this._updateOneToMany = func;
    return this;
  };
  DataDiffer2.prototype.updateManyToMany = function(func) {
    this._updateManyToMany = func;
    return this;
  };
  DataDiffer2.prototype.remove = function(func) {
    this._remove = func;
    return this;
  };
  DataDiffer2.prototype.execute = function() {
    this[this._diffModeMultiple ? "_executeMultiple" : "_executeOneToOne"]();
  };
  DataDiffer2.prototype._executeOneToOne = function() {
    var oldArr = this._old;
    var newArr = this._new;
    var newDataIndexMap = {};
    var oldDataKeyArr = new Array(oldArr.length);
    var newDataKeyArr = new Array(newArr.length);
    this._initIndexMap(oldArr, null, oldDataKeyArr, "_oldKeyGetter");
    this._initIndexMap(newArr, newDataIndexMap, newDataKeyArr, "_newKeyGetter");
    for (var i = 0; i < oldArr.length; i++) {
      var oldKey = oldDataKeyArr[i];
      var newIdxMapVal = newDataIndexMap[oldKey];
      var newIdxMapValLen = dataIndexMapValueLength(newIdxMapVal);
      if (newIdxMapValLen > 1) {
        var newIdx = newIdxMapVal.shift();
        if (newIdxMapVal.length === 1) {
          newDataIndexMap[oldKey] = newIdxMapVal[0];
        }
        this._update && this._update(newIdx, i);
      } else if (newIdxMapValLen === 1) {
        newDataIndexMap[oldKey] = null;
        this._update && this._update(newIdxMapVal, i);
      } else {
        this._remove && this._remove(i);
      }
    }
    this._performRestAdd(newDataKeyArr, newDataIndexMap);
  };
  DataDiffer2.prototype._executeMultiple = function() {
    var oldArr = this._old;
    var newArr = this._new;
    var oldDataIndexMap = {};
    var newDataIndexMap = {};
    var oldDataKeyArr = [];
    var newDataKeyArr = [];
    this._initIndexMap(oldArr, oldDataIndexMap, oldDataKeyArr, "_oldKeyGetter");
    this._initIndexMap(newArr, newDataIndexMap, newDataKeyArr, "_newKeyGetter");
    for (var i = 0; i < oldDataKeyArr.length; i++) {
      var oldKey = oldDataKeyArr[i];
      var oldIdxMapVal = oldDataIndexMap[oldKey];
      var newIdxMapVal = newDataIndexMap[oldKey];
      var oldIdxMapValLen = dataIndexMapValueLength(oldIdxMapVal);
      var newIdxMapValLen = dataIndexMapValueLength(newIdxMapVal);
      if (oldIdxMapValLen > 1 && newIdxMapValLen === 1) {
        this._updateManyToOne && this._updateManyToOne(newIdxMapVal, oldIdxMapVal);
        newDataIndexMap[oldKey] = null;
      } else if (oldIdxMapValLen === 1 && newIdxMapValLen > 1) {
        this._updateOneToMany && this._updateOneToMany(newIdxMapVal, oldIdxMapVal);
        newDataIndexMap[oldKey] = null;
      } else if (oldIdxMapValLen === 1 && newIdxMapValLen === 1) {
        this._update && this._update(newIdxMapVal, oldIdxMapVal);
        newDataIndexMap[oldKey] = null;
      } else if (oldIdxMapValLen > 1 && newIdxMapValLen > 1) {
        this._updateManyToMany && this._updateManyToMany(newIdxMapVal, oldIdxMapVal);
        newDataIndexMap[oldKey] = null;
      } else if (oldIdxMapValLen > 1) {
        for (var i_1 = 0; i_1 < oldIdxMapValLen; i_1++) {
          this._remove && this._remove(oldIdxMapVal[i_1]);
        }
      } else {
        this._remove && this._remove(oldIdxMapVal);
      }
    }
    this._performRestAdd(newDataKeyArr, newDataIndexMap);
  };
  DataDiffer2.prototype._performRestAdd = function(newDataKeyArr, newDataIndexMap) {
    for (var i = 0; i < newDataKeyArr.length; i++) {
      var newKey = newDataKeyArr[i];
      var newIdxMapVal = newDataIndexMap[newKey];
      var idxMapValLen = dataIndexMapValueLength(newIdxMapVal);
      if (idxMapValLen > 1) {
        for (var j = 0; j < idxMapValLen; j++) {
          this._add && this._add(newIdxMapVal[j]);
        }
      } else if (idxMapValLen === 1) {
        this._add && this._add(newIdxMapVal);
      }
      newDataIndexMap[newKey] = null;
    }
  };
  DataDiffer2.prototype._initIndexMap = function(arr, map, keyArr, keyGetterName) {
    var cbModeMultiple = this._diffModeMultiple;
    for (var i = 0; i < arr.length; i++) {
      var key = "_ec_" + this[keyGetterName](arr[i], i);
      if (!cbModeMultiple) {
        keyArr[i] = key;
      }
      if (!map) {
        continue;
      }
      var idxMapVal = map[key];
      var idxMapValLen = dataIndexMapValueLength(idxMapVal);
      if (idxMapValLen === 0) {
        map[key] = i;
        if (cbModeMultiple) {
          keyArr.push(key);
        }
      } else if (idxMapValLen === 1) {
        map[key] = [idxMapVal, i];
      } else {
        idxMapVal.push(i);
      }
    }
  };
  return DataDiffer2;
}();
var DataDiffer$1 = DataDiffer;
export { DataDiffer$1 as default };