add babel

.babelrc

+{
+  "presets": [
+    "es2015"
+  ],
+  "plugins": []
+}

.gitignore

+/node_modules

index.js/contants.js

+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+var Constants = {
+  IMAGE_MULTIPART: '/multipart/upload/',
+  VIDEO_MULTIPART: '/upload/',
+  IMAGE_TYPE_ERROR: 101,
+  VIDOE_TYPE_ERROR: 102,
+  UPLOAD_SUCCESS_CODE: 200,
+  UPLOAD_FAILED_CODE: 400
+};
+
+exports.Constants = Constants;

index.js/index.js

+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = UploadSdk;
+
+var _contants = require('./contants');
+
+var _utils = require('./utils');
+
+var _utils2 = _interopRequireDefault(_utils);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+function FileFactory(file) {
+  this.offset = 0; //用于断点续传，默认为 0
+  this.BYTES_PER_CHUNK = 1024 * 1024;
+  this.file = file;
+  this.fileSize = file.size;
+  this.fileType = file.name.split('.')[1].toLowerCase();
+  this.chunkNum = this.BYTES_PER_CHUNK > this.fileSize ? Math.ceil(this.fileSize / this.BYTES_PER_CHUNK) : 1;
+  this.chunkSize = this.BYTES_PER_CHUNK > this.fileSize ? this.fileSize : this.BYTES_PER_CHUNK;
+}
+
+FileFactory.prototype.setOffset = function (offset) {
+  this.offset = offset;
+};
+
+function UploadSdk(host, origin, token, file) {
+
+  this.handlers = []; //用于处理出触发事件
+  this.host = host.indexOf('http:') > -1 ? 'http:' + host : host;
+  this.origin = origin;
+  this.token = token;
+  this.file = file;
+
+  this.generateMd5 = function (callback) {
+    (0, _utils2.default)(this.file).then(function (result) {
+      callback(result);
+    });
+  };
+
+  this.imageUploadAction = function () {
+    var _this = this;
+
+    return new Promise(function (resolve, reject) {
+      var fileFactory = new FileFactory(_this.file);
+      if (!fileFactory.fileType.match('[(jpg)|(png)|(gif)]+$')) {
+        reject(_contants.Constants.IMAGE_TYPE_ERROR);
+      }
+      _this.generateMd5(function (md5) {
+        _this.md5 = md5;
+        _this.postImage(_this.md5, fileFactory).then(function (res) {
+          resolve(res);
+        }).catch(function (err) {
+          reject(err);
+        });
+      });
+    });
+  };
+
+  this.videoUploadAction = function () {
+    var _this2 = this;
+
+    return new Promise(function (resolve, reject) {
+      if (!_this2.file.type.match('[(mp4)|(rmvb)|(flv)|(mpeg)|(avi)]+$')) {
+        reject(_contants.Constants.VIDOE_TYPE_ERROR);
+      }
+      _this2.postVideo().then(function (res) {
+        resolve(res);
+      }).catch(function (err) {
+        reject(err);
+      });
+    });
+  };
+
+  this.postVideo = function () {
+    var _this3 = this;
+
+    var self = this;
+    return new Promise(function (resolve, reject) {
+      var xhr = new XMLHttpRequest();
+      xhr.open('POST', _this3.host + _contants.Constants.VIDEO_MULTIPART + _this3.origin, true);
+      xhr.withCredentials = true;
+      xhr.setRequestHeader('Authorization', 'Bearer ' + _this3.token);
+      xhr.setRequestHeader('Content-type', 'application/json');
+      xhr.upload.addEventListener("progress", function updateProgress(oEvent) {
+        if (oEvent.lengthComputable) {
+          var percentComplete = oEvent.loaded / oEvent.total * 100;
+          self.emitUpdateProgress(percentComplete);
+        }
+      }, false);
+      var fd = new FormData();
+      fd.append('file', _this3.file);
+      fd.append('code_rate', 'ld,sd,hd');
+      xhr.send(fd);
+      xhr.onreadystatechange = function () {
+        if (xhr.readyState === 4) {
+          var obj = JSON.parse(xhr.responseText);
+          if (xhr.status === 304 || xhr.status >= 200 && xhr.status < 300) {
+            resolve({
+              code: _contants.Constants.UPLOAD_SUCCESS_CODE,
+              url: obj.url,
+              msg: 'success'
+            });
+          } else {
+            reject({
+              code: _contants.Constants.UPLOAD_FAILED_CODE,
+              url: '',
+              msg: obj.message
+            });
+          }
+        }
+      };
+    });
+  };
+
+  this.postImage = function (md5, fileFactory) {
+    var _this4 = this;
+
+    var self = this;
+    return new Promise(function (resolve, reject) {
+      var xhr = new XMLHttpRequest();
+      xhr.upload.addEventListener("progress", function updateProgress(oEvent) {
+        if (oEvent.lengthComputable) {
+          var percentComplete = oEvent.loaded / oEvent.total * 100;
+          self.emitUpdateProgress(percentComplete);
+        }
+      }, false);
+      xhr.open('POSt', _this4.host + _contants.Constants.IMAGE_MULTIPART + _this4.origin, true);
+      xhr.withCredentials = true;
+      xhr.setRequestHeader('Authorization', 'Bearer ' + _this4.token);
+      xhr.setRequestHeader('X-Upload-File-Size', fileFactory.fileSize);
+      xhr.setRequestHeader('X-Upload-Chunk-Index', 1 + '');
+      xhr.setRequestHeader('X-Upload-Chunk-Num', fileFactory.chunkNum);
+      xhr.setRequestHeader('X-Upload-Chunk-Size', fileFactory.chunkSize);
+      xhr.setRequestHeader('X-Upload-Offset', fileFactory.offset + '');
+      xhr.setRequestHeader('X-Upload-File-Md5', md5);
+      xhr.setRequestHeader('X-Upload-File-Type', fileFactory.fileType);
+      var fd = new FormData();
+      fd.append('file', _this4.file);
+      xhr.send(fd);
+      xhr.onreadystatechange = function () {
+        if (xhr.readyState === 4) {
+          var obj = JSON.parse(xhr.responseText);
+          if (xhr.status === 304 || xhr.status >= 200 && xhr.status < 300) {
+
+            if (obj.status === 1) {
+              resolve({
+                code: _contants.Constants.UPLOAD_SUCCESS_CODE,
+                url: obj.url,
+                msg: 'success'
+              });
+            } else if (obj.status === 0) {
+              fileFactory.setOffset(obj.msg);
+              this.getAllResponseHeaders.postImage(md5, fileFactory);
+            }
+          } else {
+            reject({
+              code: _contants.Constants.UPLOAD_FAILED_CODE,
+              url: '',
+              msg: obj.message
+            });
+          }
+        }
+      };
+    });
+  };
+}
+
+UploadSdk.prototype = {
+
+  onUpdateProgress: function onUpdateProgress(subscriber) {
+    var isExist = this.handlers.some(function (item) {
+      return item == subscriber;
+    });
+    if (!isExist) {
+      this.handlers.push(subscriber);
+    }
+    return this;
+  },
+
+  emitUpdateProgress: function emitUpdateProgress(data) {
+    this.handlers.forEach(function (fn) {
+      fn(data);
+    });
+    return this;
+  }
+};

index.js/utils.js

+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+exports.default = getFilemd5sum;
+
+var _sparkMd = require('spark-md5');
+
+var _sparkMd2 = _interopRequireDefault(_sparkMd);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+function getFilemd5sum(ofile) {
+    return new Promise(function (resolve, reject) {
+        var file = ofile;
+        var tmp_md5 = void 0;
+        var blobSlice = File.prototype.slice || File.prototype.mozSlice || File.prototype.webkitSlice,
+
+        // file = this.files[0],
+        chunkSize = 8097152,
+            // Read in chunks of 2MB
+        chunks = Math.ceil(file.size / chunkSize),
+            currentChunk = 0,
+            spark = new _sparkMd2.default.ArrayBuffer(),
+            fileReader = new FileReader();
+
+        function loadNext() {
+            var start = currentChunk * chunkSize,
+                end = start + chunkSize >= file.size ? file.size : start + chunkSize;
+            fileReader.readAsArrayBuffer(blobSlice.call(file, start, end));
+        }
+
+        fileReader.onload = function (e) {
+            spark.append(e.target.result); // Append array buffer
+            currentChunk++;
+
+            if (currentChunk < chunks) {
+                loadNext();
+            } else {
+                tmp_md5 = spark.end();
+                resolve(tmp_md5);
+            }
+        };
+
+        fileReader.onerror = function () {
+            reject('error');
+        };
+
+        loadNext();
+    });
+}

package-lock.json

       "resolved": "http://registry.npm.taobao.org/@types/spark-md5/download/@types/spark-md5-3.0.1.tgz",
       "integrity": "sha1-NRs4OzL6empXm4Nu+Hhik8Sn5zs="
     },
+    "ansi-regex": {
+      "version": "2.1.1",
+      "resolved": "http://registry.npm.taobao.org/ansi-regex/download/ansi-regex-2.1.1.tgz",
+      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
+      "dev": true
+    },
+    "ansi-styles": {
+      "version": "2.2.1",
+      "resolved": "http://registry.npm.taobao.org/ansi-styles/download/ansi-styles-2.2.1.tgz",
+      "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=",
+      "dev": true
+    },
+    "babel-code-frame": {
+      "version": "6.26.0",
+      "resolved": "http://registry.npm.taobao.org/babel-code-frame/download/babel-code-frame-6.26.0.tgz",
+      "integrity": "sha1-Y/1D99weO7fONZR9uP42mj9Yx0s=",
+      "dev": true,
+      "requires": {
+        "chalk": "^1.1.3",
+        "esutils": "^2.0.2",
+        "js-tokens": "^3.0.2"
+      }
+    },
+    "babel-helper-call-delegate": {
+      "version": "6.24.1",
+      "resolved": "http://registry.npm.taobao.org/babel-helper-call-delegate/download/babel-helper-call-delegate-6.24.1.tgz",
+      "integrity": "sha1-7Oaqzdx25Bw0YfiL/Fdb0Nqi340=",
+      "dev": true,
+      "requires": {
+        "babel-helper-hoist-variables": "^6.24.1",
+        "babel-runtime": "^6.22.0",
+        "babel-traverse": "^6.24.1",
+        "babel-types": "^6.24.1"
+      }
+    },
+    "babel-helper-define-map": {
+      "version": "6.26.0",
+      "resolved": "http://registry.npm.taobao.org/babel-helper-define-map/download/babel-helper-define-map-6.26.0.tgz",
+      "integrity": "sha1-pfVtq0GiX5fstJjH66ypgZ+Vvl8=",
+      "dev": true,
+      "requires": {
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+        "babel-runtime": "^6.26.0",
+        "babel-types": "^6.26.0",
+        "lodash": "^4.17.4"
+      }
+    },
+    "babel-helper-function-name": {
+      "version": "6.24.1",
+      "resolved": "http://registry.npm.taobao.org/babel-helper-function-name/download/babel-helper-function-name-6.24.1.tgz",
+      "integrity": "sha1-00dbjAPtmCQqJbSDUasYOZ01gKk=",
+      "dev": true,
+      "requires": {
+        "babel-helper-get-function-arity": "^6.24.1",
+        "babel-runtime": "^6.22.0",
+        "babel-template": "^6.24.1",
+        "babel-traverse": "^6.24.1",
+        "babel-types": "^6.24.1"
+      }
+    },
+    "babel-helper-get-function-arity": {
+      "version": "6.24.1",
+      "resolved": "http://registry.npm.taobao.org/babel-helper-get-function-arity/download/babel-helper-get-function-arity-6.24.1.tgz",
+      "integrity": "sha1-j3eCqpNAfEHTqlCQj4mwMbG2hT0=",
+      "dev": true,
+      "requires": {
+        "babel-runtime": "^6.22.0",
+        "babel-types": "^6.24.1"
+      }
+    },
+    "babel-helper-hoist-variables": {
+      "version": "6.24.1",
+      "resolved": "http://registry.npm.taobao.org/babel-helper-hoist-variables/download/babel-helper-hoist-variables-6.24.1.tgz",
+      "integrity": "sha1-HssnaJydJVE+rbyZFKc/VAi+enY=",
+      "dev": true,
+      "requires": {
+        "babel-runtime": "^6.22.0",
+        "babel-types": "^6.24.1"
+      }
+    },
+    "babel-helper-optimise-call-expression": {
+      "version": "6.24.1",
+      "resolved": "http://registry.npm.taobao.org/babel-helper-optimise-call-expression/download/babel-helper-optimise-call-expression-6.24.1.tgz",
+      "integrity": "sha1-96E0J7qfc/j0+pk8VKl4gtEkQlc=",
+      "dev": true,
+      "requires": {
+        "babel-runtime": "^6.22.0",
+        "babel-types": "^6.24.1"
+      }
+    },
+    "babel-helper-regex": {
+      "version": "6.26.0",
+      "resolved": "http://registry.npm.taobao.org/babel-helper-regex/download/babel-helper-regex-6.26.0.tgz",
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+      "dev": true,
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+        "babel-types": "^6.26.0",
+        "lodash": "^4.17.4"
+      }
+    },
+    "babel-helper-replace-supers": {
+      "version": "6.24.1",
+      "resolved": "http://registry.npm.taobao.org/babel-helper-replace-supers/download/babel-helper-replace-supers-6.24.1.tgz",
+      "integrity": "sha1-v22/5Dk40XNpohPKiov3S2qQqxo=",
+      "dev": true,
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+        "babel-runtime": "^6.22.0",
+        "babel-template": "^6.24.1",
+        "babel-traverse": "^6.24.1",
+        "babel-types": "^6.24.1"
+      }
+    },
+    "babel-messages": {
+      "version": "6.23.0",
+      "resolved": "http://registry.npm.taobao.org/babel-messages/download/babel-messages-6.23.0.tgz",
+      "integrity": "sha1-8830cDhYA1sqKVHG7F7fbGLyYw4=",
+      "dev": true,
+      "requires": {
+        "babel-runtime": "^6.22.0"
+      }
+    },
+    "babel-plugin-check-es2015-constants": {
+      "version": "6.22.0",
+      "resolved": "http://registry.npm.taobao.org/babel-plugin-check-es2015-constants/download/babel-plugin-check-es2015-constants-6.22.0.tgz",
+      "integrity": "sha1-NRV7EBQm/S/9PaP3XH0ekYNbv4o=",
+      "dev": true,
+      "requires": {
+        "babel-runtime": "^6.22.0"
+      }
+    },
+    "babel-plugin-transform-es2015-arrow-functions": {
+      "version": "6.22.0",
+      "resolved": "http://registry.npm.taobao.org/babel-plugin-transform-es2015-arrow-functions/download/babel-plugin-transform-es2015-arrow-functions-6.22.0.tgz",
+      "integrity": "sha1-RSaSy3EdX3ncf4XkQM5BufJE0iE=",
+      "dev": true,
+      "requires": {
+        "babel-runtime": "^6.22.0"
+      }
+    },
+    "babel-plugin-transform-es2015-block-scoped-functions": {
+      "version": "6.22.0",
+      "resolved": "http://registry.npm.taobao.org/babel-plugin-transform-es2015-block-scoped-functions/download/babel-plugin-transform-es2015-block-scoped-functions-6.22.0.tgz",
+      "integrity": "sha1-u8UbSflk1wy42OC5ToICRs46YUE=",
+      "dev": true,
+      "requires": {
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+      }
+    },
+    "babel-plugin-transform-es2015-block-scoping": {
+      "version": "6.26.0",
+      "resolved": "http://registry.npm.taobao.org/babel-plugin-transform-es2015-block-scoping/download/babel-plugin-transform-es2015-block-scoping-6.26.0.tgz",
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+        "babel-template": "^6.26.0",
+        "babel-traverse": "^6.26.0",
+        "babel-types": "^6.26.0",
+        "lodash": "^4.17.4"
+      }
+    },
+    "babel-plugin-transform-es2015-classes": {
+      "version": "6.24.1",
+      "resolved": "http://registry.npm.taobao.org/babel-plugin-transform-es2015-classes/download/babel-plugin-transform-es2015-classes-6.24.1.tgz",
+      "integrity": "sha1-WkxYpQyclGHlZLSyo7+ryXolhNs=",
+      "dev": true,
+      "requires": {
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+        "babel-helper-function-name": "^6.24.1",
+        "babel-helper-optimise-call-expression": "^6.24.1",
+        "babel-helper-replace-supers": "^6.24.1",
+        "babel-messages": "^6.23.0",
+        "babel-runtime": "^6.22.0",
+        "babel-template": "^6.24.1",
+        "babel-traverse": "^6.24.1",
+        "babel-types": "^6.24.1"
+      }
+    },
+    "babel-plugin-transform-es2015-computed-properties": {
+      "version": "6.24.1",
+      "resolved": "http://registry.npm.taobao.org/babel-plugin-transform-es2015-computed-properties/download/babel-plugin-transform-es2015-computed-properties-6.24.1.tgz",
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+      "dev": true,
+      "requires": {
+        "babel-runtime": "^6.22.0",
+        "babel-template": "^6.24.1"
+      }
+    },
+    "babel-plugin-transform-es2015-destructuring": {
+      "version": "6.23.0",
+      "resolved": "http://registry.npm.taobao.org/babel-plugin-transform-es2015-destructuring/download/babel-plugin-transform-es2015-destructuring-6.23.0.tgz",
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+      "dev": true,
+      "requires": {
+        "babel-runtime": "^6.22.0"
+      }
+    },
+    "babel-plugin-transform-es2015-duplicate-keys": {
+      "version": "6.24.1",
+      "resolved": "http://registry.npm.taobao.org/babel-plugin-transform-es2015-duplicate-keys/download/babel-plugin-transform-es2015-duplicate-keys-6.24.1.tgz",
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+      "dev": true,
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+        "babel-types": "^6.24.1"
+      }
+    },
+    "babel-plugin-transform-es2015-for-of": {
+      "version": "6.23.0",
+      "resolved": "http://registry.npm.taobao.org/babel-plugin-transform-es2015-for-of/download/babel-plugin-transform-es2015-for-of-6.23.0.tgz",
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+      "dev": true,
+      "requires": {
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+      }
+    },
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+      "version": "6.24.1",
+      "resolved": "http://registry.npm.taobao.org/babel-plugin-transform-es2015-function-name/download/babel-plugin-transform-es2015-function-name-6.24.1.tgz",
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+        "babel-runtime": "^6.22.0",
+        "babel-types": "^6.24.1"
+      }
+    },
+    "babel-plugin-transform-es2015-literals": {
+      "version": "6.22.0",
+      "resolved": "http://registry.npm.taobao.org/babel-plugin-transform-es2015-literals/download/babel-plugin-transform-es2015-literals-6.22.0.tgz",
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+      "dev": true,
+      "requires": {
+        "babel-runtime": "^6.22.0"
+      }
+    },
+    "babel-plugin-transform-es2015-modules-amd": {
+      "version": "6.24.1",
+      "resolved": "http://registry.npm.taobao.org/babel-plugin-transform-es2015-modules-amd/download/babel-plugin-transform-es2015-modules-amd-6.24.1.tgz",
+      "integrity": "sha1-Oz5UAXI5hC1tGcMBHEvS8AoA0VQ=",
+      "dev": true,
+      "requires": {
+        "babel-plugin-transform-es2015-modules-commonjs": "^6.24.1",
+        "babel-runtime": "^6.22.0",
+        "babel-template": "^6.24.1"
+      }
+    },
+    "babel-plugin-transform-es2015-modules-commonjs": {
+      "version": "6.26.2",
+      "resolved": "http://registry.npm.taobao.org/babel-plugin-transform-es2015-modules-commonjs/download/babel-plugin-transform-es2015-modules-commonjs-6.26.2.tgz",
+      "integrity": "sha1-WKeThjqefKhwvcWogRF/+sJ9tvM=",
+      "dev": true,
+      "requires": {
+        "babel-plugin-transform-strict-mode": "^6.24.1",
+        "babel-runtime": "^6.26.0",
+        "babel-template": "^6.26.0",
+        "babel-types": "^6.26.0"
+      }
+    },
+    "babel-plugin-transform-es2015-modules-systemjs": {
+      "version": "6.24.1",
+      "resolved": "http://registry.npm.taobao.org/babel-plugin-transform-es2015-modules-systemjs/download/babel-plugin-transform-es2015-modules-systemjs-6.24.1.tgz",
+      "integrity": "sha1-/4mhQrkRmpBhlfXxBuzzBdlAfSM=",
+      "dev": true,
+      "requires": {
+        "babel-helper-hoist-variables": "^6.24.1",
+        "babel-runtime": "^6.22.0",
+        "babel-template": "^6.24.1"
+      }
+    },
+    "babel-plugin-transform-es2015-modules-umd": {
+      "version": "6.24.1",
+      "resolved": "http://registry.npm.taobao.org/babel-plugin-transform-es2015-modules-umd/download/babel-plugin-transform-es2015-modules-umd-6.24.1.tgz",
+      "integrity": "sha1-rJl+YoXNGO1hdq22B9YCNErThGg=",
+      "dev": true,
+      "requires": {
+        "babel-plugin-transform-es2015-modules-amd": "^6.24.1",
+        "babel-runtime": "^6.22.0",
+        "babel-template": "^6.24.1"
+      }
+    },
+    "babel-plugin-transform-es2015-object-super": {
+      "version": "6.24.1",
+      "resolved": "http://registry.npm.taobao.org/babel-plugin-transform-es2015-object-super/download/babel-plugin-transform-es2015-object-super-6.24.1.tgz",
+      "integrity": "sha1-JM72muIcuDp/hgPa0CH1cusnj40=",
+      "dev": true,
+      "requires": {
+        "babel-helper-replace-supers": "^6.24.1",
+        "babel-runtime": "^6.22.0"
+      }
+    },
+    "babel-plugin-transform-es2015-parameters": {
+      "version": "6.24.1",
+      "resolved": "http://registry.npm.taobao.org/babel-plugin-transform-es2015-parameters/download/babel-plugin-transform-es2015-parameters-6.24.1.tgz",
+      "integrity": "sha1-V6w1GrScrxSpfNE7CfZv3wpiXys=",
+      "dev": true,
+      "requires": {
+        "babel-helper-call-delegate": "^6.24.1",
+        "babel-helper-get-function-arity": "^6.24.1",
+        "babel-runtime": "^6.22.0",
+        "babel-template": "^6.24.1",
+        "babel-traverse": "^6.24.1",
+        "babel-types": "^6.24.1"
+      }
+    },
+    "babel-plugin-transform-es2015-shorthand-properties": {
+      "version": "6.24.1",
+      "resolved": "http://registry.npm.taobao.org/babel-plugin-transform-es2015-shorthand-properties/download/babel-plugin-transform-es2015-shorthand-properties-6.24.1.tgz",
+      "integrity": "sha1-JPh11nIch2YbvZmkYi5R8U3jiqA=",
+      "dev": true,
+      "requires": {
+        "babel-runtime": "^6.22.0",
+        "babel-types": "^6.24.1"
+      }
+    },
+    "babel-plugin-transform-es2015-spread": {
+      "version": "6.22.0",
+      "resolved": "http://registry.npm.taobao.org/babel-plugin-transform-es2015-spread/download/babel-plugin-transform-es2015-spread-6.22.0.tgz",
+      "integrity": "sha1-1taKmfia7cRTbIGlQujdnxdG+NE=",
+      "dev": true,
+      "requires": {
+        "babel-runtime": "^6.22.0"
+      }
+    },
+    "babel-plugin-transform-es2015-sticky-regex": {
+      "version": "6.24.1",
+      "resolved": "http://registry.npm.taobao.org/babel-plugin-transform-es2015-sticky-regex/download/babel-plugin-transform-es2015-sticky-regex-6.24.1.tgz",
+      "integrity": "sha1-AMHNsaynERLN8M9hJsLta0V8zbw=",
+      "dev": true,
+      "requires": {
+        "babel-helper-regex": "^6.24.1",
+        "babel-runtime": "^6.22.0",
+        "babel-types": "^6.24.1"
+      }
+    },
+    "babel-plugin-transform-es2015-template-literals": {
+      "version": "6.22.0",
+      "resolved": "http://registry.npm.taobao.org/babel-plugin-transform-es2015-template-literals/download/babel-plugin-transform-es2015-template-literals-6.22.0.tgz",
+      "integrity": "sha1-qEs0UPfp+PH2g51taH2oS7EjbY0=",
+      "dev": true,
+      "requires": {
+        "babel-runtime": "^6.22.0"
+      }
+    },
+    "babel-plugin-transform-es2015-typeof-symbol": {
+      "version": "6.23.0",
+      "resolved": "http://registry.npm.taobao.org/babel-plugin-transform-es2015-typeof-symbol/download/babel-plugin-transform-es2015-typeof-symbol-6.23.0.tgz",
+      "integrity": "sha1-3sCfHN3/lLUqxz1QXITfWdzOs3I=",
+      "dev": true,
+      "requires": {
+        "babel-runtime": "^6.22.0"
+      }
+    },
+    "babel-plugin-transform-es2015-unicode-regex": {
+      "version": "6.24.1",
+      "resolved": "http://registry.npm.taobao.org/babel-plugin-transform-es2015-unicode-regex/download/babel-plugin-transform-es2015-unicode-regex-6.24.1.tgz",
+      "integrity": "sha1-04sS9C6nMj9yk4fxinxa4frrNek=",
+      "dev": true,
+      "requires": {
+        "babel-helper-regex": "^6.24.1",
+        "babel-runtime": "^6.22.0",
+        "regexpu-core": "^2.0.0"
+      }
+    },
+    "babel-plugin-transform-regenerator": {
+      "version": "6.26.0",
+      "resolved": "http://registry.npm.taobao.org/babel-plugin-transform-regenerator/download/babel-plugin-transform-regenerator-6.26.0.tgz",
+      "integrity": "sha1-4HA2lvveJ/Cj78rPi03KL3s6jy8=",
+      "dev": true,
+      "requires": {
+        "regenerator-transform": "^0.10.0"
+      }
+    },
+    "babel-plugin-transform-strict-mode": {
+      "version": "6.24.1",
+      "resolved": "http://registry.npm.taobao.org/babel-plugin-transform-strict-mode/download/babel-plugin-transform-strict-mode-6.24.1.tgz",
+      "integrity": "sha1-1fr3qleKZbvlkc9e2uBKDGcCB1g=",
+      "dev": true,
+      "requires": {
+        "babel-runtime": "^6.22.0",
+        "babel-types": "^6.24.1"
+      }
+    },
+    "babel-preset-es2015": {
+      "version": "6.24.1",
+      "resolved": "http://registry.npm.taobao.org/babel-preset-es2015/download/babel-preset-es2015-6.24.1.tgz",
+      "integrity": "sha1-1EBQ1rwsn+6nAqrzjXJ6AhBTiTk=",
+      "dev": true,
+      "requires": {
+        "babel-plugin-check-es2015-constants": "^6.22.0",
+        "babel-plugin-transform-es2015-arrow-functions": "^6.22.0",
+        "babel-plugin-transform-es2015-block-scoped-functions": "^6.22.0",
+        "babel-plugin-transform-es2015-block-scoping": "^6.24.1",
+        "babel-plugin-transform-es2015-classes": "^6.24.1",
+        "babel-plugin-transform-es2015-computed-properties": "^6.24.1",
+        "babel-plugin-transform-es2015-destructuring": "^6.22.0",
+        "babel-plugin-transform-es2015-duplicate-keys": "^6.24.1",
+        "babel-plugin-transform-es2015-for-of": "^6.22.0",
+        "babel-plugin-transform-es2015-function-name": "^6.24.1",
+        "babel-plugin-transform-es2015-literals": "^6.22.0",
+        "babel-plugin-transform-es2015-modules-amd": "^6.24.1",
+        "babel-plugin-transform-es2015-modules-commonjs": "^6.24.1",
+        "babel-plugin-transform-es2015-modules-systemjs": "^6.24.1",
+        "babel-plugin-transform-es2015-modules-umd": "^6.24.1",
+        "babel-plugin-transform-es2015-object-super": "^6.24.1",
+        "babel-plugin-transform-es2015-parameters": "^6.24.1",
+        "babel-plugin-transform-es2015-shorthand-properties": "^6.24.1",
+        "babel-plugin-transform-es2015-spread": "^6.22.0",
+        "babel-plugin-transform-es2015-sticky-regex": "^6.24.1",
+        "babel-plugin-transform-es2015-template-literals": "^6.22.0",
+        "babel-plugin-transform-es2015-typeof-symbol": "^6.22.0",
+        "babel-plugin-transform-es2015-unicode-regex": "^6.24.1",
+        "babel-plugin-transform-regenerator": "^6.24.1"
+      }
+    },
+    "babel-runtime": {
+      "version": "6.26.0",
+      "resolved": "http://registry.npm.taobao.org/babel-runtime/download/babel-runtime-6.26.0.tgz",
+      "integrity": "sha1-llxwWGaOgrVde/4E/yM3vItWR/4=",
+      "dev": true,
+      "requires": {
+        "core-js": "^2.4.0",
+        "regenerator-runtime": "^0.11.0"
+      }
+    },
+    "babel-template": {
+      "version": "6.26.0",
+      "resolved": "http://registry.npm.taobao.org/babel-template/download/babel-template-6.26.0.tgz",
+      "integrity": "sha1-3gPi0WOWsGn0bdn/+FIfsaDjXgI=",
+      "dev": true,
+      "requires": {
+        "babel-runtime": "^6.26.0",
+        "babel-traverse": "^6.26.0",
+        "babel-types": "^6.26.0",
+        "babylon": "^6.18.0",
+        "lodash": "^4.17.4"
+      }
+    },
+    "babel-traverse": {
+      "version": "6.26.0",
+      "resolved": "http://registry.npm.taobao.org/babel-traverse/download/babel-traverse-6.26.0.tgz",
+      "integrity": "sha1-RqnL1+3MYsjlwGTi0tjQ9ANXZu4=",
+      "dev": true,
+      "requires": {
+        "babel-code-frame": "^6.26.0",
+        "babel-messages": "^6.23.0",
+        "babel-runtime": "^6.26.0",
+        "babel-types": "^6.26.0",
+        "babylon": "^6.18.0",
+        "debug": "^2.6.8",
+        "globals": "^9.18.0",
+        "invariant": "^2.2.2",
+        "lodash": "^4.17.4"
+      }
+    },
+    "babel-types": {
+      "version": "6.26.0",
+      "resolved": "http://registry.npm.taobao.org/babel-types/download/babel-types-6.26.0.tgz",
+      "integrity": "sha1-o7Bz+Uq0nrb6Vc1lInozQ4BjJJc=",
+      "dev": true,
+      "requires": {
+        "babel-runtime": "^6.26.0",
+        "esutils": "^2.0.2",
+        "lodash": "^4.17.4",
+        "to-fast-properties": "^1.0.3"
+      }
+    },
+    "babylon": {
+      "version": "6.18.0",
+      "resolved": "http://registry.npm.taobao.org/babylon/download/babylon-6.18.0.tgz",
+      "integrity": "sha1-ry87iPpvXB5MY00aD46sT1WzleM=",
+      "dev": true
+    },
+    "chalk": {
+      "version": "1.1.3",
+      "resolved": "http://registry.npm.taobao.org/chalk/download/chalk-1.1.3.tgz",
+      "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
+      "dev": true,
+      "requires": {
+        "ansi-styles": "^2.2.1",
+        "escape-string-regexp": "^1.0.2",
+        "has-ansi": "^2.0.0",
+        "strip-ansi": "^3.0.0",
+        "supports-color": "^2.0.0"
+      }
+    },
+    "core-js": {
+      "version": "2.6.5",
+      "resolved": "http://registry.npm.taobao.org/core-js/download/core-js-2.6.5.tgz?cache=0&other_urls=http%3A%2F%2Fregistry.npm.taobao.org%2Fcore-js%2Fdownload%2Fcore-js-2.6.5.tgz",
+      "integrity": "sha1-RLyNJJ5/sv9dAOA0Gn/7lPv2eJU=",
+      "dev": true
+    },
+    "debug": {
+      "version": "2.6.9",
+      "resolved": "http://registry.npm.taobao.org/debug/download/debug-2.6.9.tgz",
+      "integrity": "sha1-XRKFFd8TT/Mn6QpMk/Tgd6U2NB8=",
+      "dev": true,
+      "requires": {
+        "ms": "2.0.0"
+      }
+    },
+    "escape-string-regexp": {
+      "version": "1.0.5",
+      "resolved": "http://registry.npm.taobao.org/escape-string-regexp/download/escape-string-regexp-1.0.5.tgz",
+      "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=",
+      "dev": true
+    },
+    "esutils": {
+      "version": "2.0.2",
+      "resolved": "http://registry.npm.taobao.org/esutils/download/esutils-2.0.2.tgz",
+      "integrity": "sha1-Cr9PHKpbyx96nYrMbepPqqBLrJs=",
+      "dev": true
+    },
+    "globals": {
+      "version": "9.18.0",
+      "resolved": "http://registry.npm.taobao.org/globals/download/globals-9.18.0.tgz",
+      "integrity": "sha1-qjiWs+abSH8X4x7SFD1pqOMMLYo=",
+      "dev": true
+    },
+    "has-ansi": {
+      "version": "2.0.0",
+      "resolved": "http://registry.npm.taobao.org/has-ansi/download/has-ansi-2.0.0.tgz",
+      "integrity": "sha1-NPUEnOHs3ysGSa8+8k5F7TVBbZE=",
+      "dev": true,
+      "requires": {
+        "ansi-regex": "^2.0.0"
+      }
+    },
+    "invariant": {
+      "version": "2.2.4",
+      "resolved": "http://registry.npm.taobao.org/invariant/download/invariant-2.2.4.tgz",
+      "integrity": "sha1-YQ88ksk1nOHbYW5TgAjSP/NRWOY=",
+      "dev": true,
+      "requires": {
+        "loose-envify": "^1.0.0"
+      }
+    },
+    "js-tokens": {
+      "version": "3.0.2",
+      "resolved": "http://registry.npm.taobao.org/js-tokens/download/js-tokens-3.0.2.tgz",
+      "integrity": "sha1-mGbfOVECEw449/mWvOtlRDIJwls=",
+      "dev": true
+    },
+    "jsesc": {
+      "version": "0.5.0",
+      "resolved": "http://registry.npm.taobao.org/jsesc/download/jsesc-0.5.0.tgz",
+      "integrity": "sha1-597mbjXW/Bb3EP6R1c9p9w8IkR0=",
+      "dev": true
+    },
+    "lodash": {
+      "version": "4.17.11",
+      "resolved": "http://registry.npm.taobao.org/lodash/download/lodash-4.17.11.tgz",
+      "integrity": "sha1-s56mIp72B+zYniyN8SU2iRysm40=",
+      "dev": true
+    },
+    "loose-envify": {
+      "version": "1.4.0",
+      "resolved": "http://registry.npm.taobao.org/loose-envify/download/loose-envify-1.4.0.tgz",
+      "integrity": "sha1-ce5R+nvkyuwaY4OffmgtgTLTDK8=",
+      "dev": true,
+      "requires": {
+        "js-tokens": "^3.0.0 || ^4.0.0"
+      }
+    },
+    "ms": {
+      "version": "2.0.0",
+      "resolved": "http://registry.npm.taobao.org/ms/download/ms-2.0.0.tgz",
+      "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=",
+      "dev": true
+    },
+    "private": {
+      "version": "0.1.8",
+      "resolved": "http://registry.npm.taobao.org/private/download/private-0.1.8.tgz",
+      "integrity": "sha1-I4Hts2ifelPWUxkAYPz4ItLzaP8=",
+      "dev": true
+    },
+    "regenerate": {
+      "version": "1.4.0",
+      "resolved": "http://registry.npm.taobao.org/regenerate/download/regenerate-1.4.0.tgz",
+      "integrity": "sha1-SoVuxLVuQHfFV1icroXnpMiGmhE=",
+      "dev": true
+    },
+    "regenerator-runtime": {
+      "version": "0.11.1",
+      "resolved": "http://registry.npm.taobao.org/regenerator-runtime/download/regenerator-runtime-0.11.1.tgz",
+      "integrity": "sha1-vgWtf5v30i4Fb5cmzuUBf78Z4uk=",
+      "dev": true
+    },
+    "regenerator-transform": {
+      "version": "0.10.1",
+      "resolved": "http://registry.npm.taobao.org/regenerator-transform/download/regenerator-transform-0.10.1.tgz",
+      "integrity": "sha1-HkmWg3Ix2ot/PPQRTXG1aRoGgN0=",
+      "dev": true,
+      "requires": {
+        "babel-runtime": "^6.18.0",
+        "babel-types": "^6.19.0",
+        "private": "^0.1.6"
+      }
+    },
+    "regexpu-core": {
+      "version": "2.0.0",
+      "resolved": "http://registry.npm.taobao.org/regexpu-core/download/regexpu-core-2.0.0.tgz",
+      "integrity": "sha1-SdA4g3uNz4v6W5pCE5k45uoq4kA=",
+      "dev": true,
+      "requires": {
+        "regenerate": "^1.2.1",
+        "regjsgen": "^0.2.0",
+        "regjsparser": "^0.1.4"
+      }
+    },
+    "regjsgen": {
+      "version": "0.2.0",
+      "resolved": "http://registry.npm.taobao.org/regjsgen/download/regjsgen-0.2.0.tgz",
+      "integrity": "sha1-bAFq3qxVT3WCP+N6wFuS1aTtsfc=",
+      "dev": true
+    },
+    "regjsparser": {
+      "version": "0.1.5",
+      "resolved": "http://registry.npm.taobao.org/regjsparser/download/regjsparser-0.1.5.tgz",
+      "integrity": "sha1-fuj4Tcb6eS0/0K4ijSS9lJ6tIFw=",
+      "dev": true,
+      "requires": {
+        "jsesc": "~0.5.0"
+      }
+    },
     "spark-md5": {
       "version": "3.0.0",
       "resolved": "http://registry.npm.taobao.org/spark-md5/download/spark-md5-3.0.0.tgz",
       "integrity": "sha1-NyIifFTi+vJLHcbZM8wUTm9xv+8="
+    },
+    "strip-ansi": {
+      "version": "3.0.1",
+      "resolved": "http://registry.npm.taobao.org/strip-ansi/download/strip-ansi-3.0.1.tgz",
+      "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
+      "dev": true,
+      "requires": {
+        "ansi-regex": "^2.0.0"
+      }
+    },
+    "supports-color": {
+      "version": "2.0.0",
+      "resolved": "http://registry.npm.taobao.org/supports-color/download/supports-color-2.0.0.tgz",
+      "integrity": "sha1-U10EXOa2Nj+kARcIRimZXp3zJMc=",
+      "dev": true
+    },
+    "to-fast-properties": {
+      "version": "1.0.3",
+      "resolved": "http://registry.npm.taobao.org/to-fast-properties/download/to-fast-properties-1.0.3.tgz",
+      "integrity": "sha1-uDVx+k2MJbguIxsG46MFXeTKGkc=",
+      "dev": true
     }
   }
 }

package.json

   "dependencies": {
     "@types/spark-md5": "^3.0.1",
     "spark-md5": "^3.0.0"
+  },
+  "devDependencies": {
+    "babel-preset-es2015": "^6.24.1"
   }
 }

index.js → utils/index.js

-import { Constants } from './utils/contants'
-import getFilemd5sum from './utils/utils'
+import { Constants } from './contants'
+import getFilemd5sum from './utils'
 
 function FileFactory(file) {
   this.offset = 0; //用于断点续传，默认为 0