@aimake/nanod/lib/upload/utils.js

## 设计模式 NANO DESIGN 是面向于企业级中台化应用的解决方案。服务于 ToB 和 ToE 类型的单页应用，应用于各产品中从而产出了一套设计及前端规范。

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.T = T;
exports.fileToObject = fileToObject;
exports.genPercentAdd = genPercentAdd;
exports.getFileItem = getFileItem;
exports.removeFileItem = removeFileItem;

function _extends() {
  _extends = Object.assign || function (target) {
    for (var i = 1; i < arguments.length; i++) {
      var source = arguments[i];for (var key in source) {
        if (Object.prototype.hasOwnProperty.call(source, key)) {
          target[key] = source[key];
        }
      }
    }return target;
  };return _extends.apply(this, arguments);
}

function T() {
  return true;
} // Fix IE file.status problem
// via coping a new Object


function fileToObject(file) {
  return _extends({}, file, {
    lastModified: file.lastModified,
    lastModifiedDate: file.lastModifiedDate,
    name: file.name,
    size: file.size,
    type: file.type,
    uid: file.uid,
    percent: 0,
    originFileObj: file
  });
}
/**
 * 生成Progress percent: 0.1 -> 0.98
 *   - for ie
 */

function genPercentAdd() {
  var k = 0.1;
  var i = 0.01;
  var end = 0.98;
  return function (s) {
    var start = s;

    if (start >= end) {
      return start;
    }

    start += k;
    k = k - i;

    if (k < 0.001) {
      k = 0.001;
    }

    return start;
  };
}

function getFileItem(file, fileList) {
  var matchKey = file.uid !== undefined ? 'uid' : 'name';
  return fileList.filter(function (item) {
    return item[matchKey] === file[matchKey];
  })[0];
}

function removeFileItem(file, fileList) {
  var matchKey = file.uid !== undefined ? 'uid' : 'name';
  var removed = fileList.filter(function (item) {
    return item[matchKey] !== file[matchKey];
  });

  if (removed.length === fileList.length) {
    return null;
  }

  return removed;
}