Inital build

frontend/node_modules/tus-js-client/lib.es5/node/sources/BufferSource.js

@@ -0,0 +1,73 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+function _typeof(o) {
+  "@babel/helpers - typeof";
+
+  return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) {
+    return typeof o;
+  } : function (o) {
+    return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o;
+  }, _typeof(o);
+}
+function _classCallCheck(instance, Constructor) {
+  if (!(instance instanceof Constructor)) {
+    throw new TypeError("Cannot call a class as a function");
+  }
+}
+function _defineProperties(target, props) {
+  for (var i = 0; i < props.length; i++) {
+    var descriptor = props[i];
+    descriptor.enumerable = descriptor.enumerable || false;
+    descriptor.configurable = true;
+    if ("value" in descriptor) descriptor.writable = true;
+    Object.defineProperty(target, _toPropertyKey(descriptor.key), descriptor);
+  }
+}
+function _createClass(Constructor, protoProps, staticProps) {
+  if (protoProps) _defineProperties(Constructor.prototype, protoProps);
+  if (staticProps) _defineProperties(Constructor, staticProps);
+  Object.defineProperty(Constructor, "prototype", {
+    writable: false
+  });
+  return Constructor;
+}
+function _toPropertyKey(t) {
+  var i = _toPrimitive(t, "string");
+  return "symbol" == _typeof(i) ? i : i + "";
+}
+function _toPrimitive(t, r) {
+  if ("object" != _typeof(t) || !t) return t;
+  var e = t[Symbol.toPrimitive];
+  if (void 0 !== e) {
+    var i = e.call(t, r || "default");
+    if ("object" != _typeof(i)) return i;
+    throw new TypeError("@@toPrimitive must return a primitive value.");
+  }
+  return ("string" === r ? String : Number)(t);
+}
+var BufferSource = exports.default = /*#__PURE__*/function () {
+  function BufferSource(buffer) {
+    _classCallCheck(this, BufferSource);
+    this._buffer = buffer;
+    this.size = buffer.length;
+  }
+  return _createClass(BufferSource, [{
+    key: "slice",
+    value: function slice(start, end) {
+      var value = this._buffer.slice(start, end);
+      value.size = value.length;
+      var done = end >= this.size;
+      return Promise.resolve({
+        value: value,
+        done: done
+      });
+    }
+  }, {
+    key: "close",
+    value: function close() {}
+  }]);
+}();

frontend/node_modules/tus-js-client/lib.es5/node/sources/FileSource.js

@@ -0,0 +1,465 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = getFileSource;
+var _fs = require("fs");
+function _typeof(o) {
+  "@babel/helpers - typeof";
+
+  return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) {
+    return typeof o;
+  } : function (o) {
+    return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o;
+  }, _typeof(o);
+}
+function _regeneratorRuntime() {
+  "use strict";
+
+  /*! regenerator-runtime -- Copyright (c) 2014-present, Facebook, Inc. -- license (MIT): https://github.com/facebook/regenerator/blob/main/LICENSE */
+  _regeneratorRuntime = function _regeneratorRuntime() {
+    return e;
+  };
+  var t,
+    e = {},
+    r = Object.prototype,
+    n = r.hasOwnProperty,
+    o = Object.defineProperty || function (t, e, r) {
+      t[e] = r.value;
+    },
+    i = "function" == typeof Symbol ? Symbol : {},
+    a = i.iterator || "@@iterator",
+    c = i.asyncIterator || "@@asyncIterator",
+    u = i.toStringTag || "@@toStringTag";
+  function define(t, e, r) {
+    return Object.defineProperty(t, e, {
+      value: r,
+      enumerable: !0,
+      configurable: !0,
+      writable: !0
+    }), t[e];
+  }
+  try {
+    define({}, "");
+  } catch (t) {
+    define = function define(t, e, r) {
+      return t[e] = r;
+    };
+  }
+  function wrap(t, e, r, n) {
+    var i = e && e.prototype instanceof Generator ? e : Generator,
+      a = Object.create(i.prototype),
+      c = new Context(n || []);
+    return o(a, "_invoke", {
+      value: makeInvokeMethod(t, r, c)
+    }), a;
+  }
+  function tryCatch(t, e, r) {
+    try {
+      return {
+        type: "normal",
+        arg: t.call(e, r)
+      };
+    } catch (t) {
+      return {
+        type: "throw",
+        arg: t
+      };
+    }
+  }
+  e.wrap = wrap;
+  var h = "suspendedStart",
+    l = "suspendedYield",
+    f = "executing",
+    s = "completed",
+    y = {};
+  function Generator() {}
+  function GeneratorFunction() {}
+  function GeneratorFunctionPrototype() {}
+  var p = {};
+  define(p, a, function () {
+    return this;
+  });
+  var d = Object.getPrototypeOf,
+    v = d && d(d(values([])));
+  v && v !== r && n.call(v, a) && (p = v);
+  var g = GeneratorFunctionPrototype.prototype = Generator.prototype = Object.create(p);
+  function defineIteratorMethods(t) {
+    ["next", "throw", "return"].forEach(function (e) {
+      define(t, e, function (t) {
+        return this._invoke(e, t);
+      });
+    });
+  }
+  function AsyncIterator(t, e) {
+    function invoke(r, o, i, a) {
+      var c = tryCatch(t[r], t, o);
+      if ("throw" !== c.type) {
+        var u = c.arg,
+          h = u.value;
+        return h && "object" == _typeof(h) && n.call(h, "__await") ? e.resolve(h.__await).then(function (t) {
+          invoke("next", t, i, a);
+        }, function (t) {
+          invoke("throw", t, i, a);
+        }) : e.resolve(h).then(function (t) {
+          u.value = t, i(u);
+        }, function (t) {
+          return invoke("throw", t, i, a);
+        });
+      }
+      a(c.arg);
+    }
+    var r;
+    o(this, "_invoke", {
+      value: function value(t, n) {
+        function callInvokeWithMethodAndArg() {
+          return new e(function (e, r) {
+            invoke(t, n, e, r);
+          });
+        }
+        return r = r ? r.then(callInvokeWithMethodAndArg, callInvokeWithMethodAndArg) : callInvokeWithMethodAndArg();
+      }
+    });
+  }
+  function makeInvokeMethod(e, r, n) {
+    var o = h;
+    return function (i, a) {
+      if (o === f) throw Error("Generator is already running");
+      if (o === s) {
+        if ("throw" === i) throw a;
+        return {
+          value: t,
+          done: !0
+        };
+      }
+      for (n.method = i, n.arg = a;;) {
+        var c = n.delegate;
+        if (c) {
+          var u = maybeInvokeDelegate(c, n);
+          if (u) {
+            if (u === y) continue;
+            return u;
+          }
+        }
+        if ("next" === n.method) n.sent = n._sent = n.arg;else if ("throw" === n.method) {
+          if (o === h) throw o = s, n.arg;
+          n.dispatchException(n.arg);
+        } else "return" === n.method && n.abrupt("return", n.arg);
+        o = f;
+        var p = tryCatch(e, r, n);
+        if ("normal" === p.type) {
+          if (o = n.done ? s : l, p.arg === y) continue;
+          return {
+            value: p.arg,
+            done: n.done
+          };
+        }
+        "throw" === p.type && (o = s, n.method = "throw", n.arg = p.arg);
+      }
+    };
+  }
+  function maybeInvokeDelegate(e, r) {
+    var n = r.method,
+      o = e.iterator[n];
+    if (o === t) return r.delegate = null, "throw" === n && e.iterator["return"] && (r.method = "return", r.arg = t, maybeInvokeDelegate(e, r), "throw" === r.method) || "return" !== n && (r.method = "throw", r.arg = new TypeError("The iterator does not provide a '" + n + "' method")), y;
+    var i = tryCatch(o, e.iterator, r.arg);
+    if ("throw" === i.type) return r.method = "throw", r.arg = i.arg, r.delegate = null, y;
+    var a = i.arg;
+    return a ? a.done ? (r[e.resultName] = a.value, r.next = e.nextLoc, "return" !== r.method && (r.method = "next", r.arg = t), r.delegate = null, y) : a : (r.method = "throw", r.arg = new TypeError("iterator result is not an object"), r.delegate = null, y);
+  }
+  function pushTryEntry(t) {
+    var e = {
+      tryLoc: t[0]
+    };
+    1 in t && (e.catchLoc = t[1]), 2 in t && (e.finallyLoc = t[2], e.afterLoc = t[3]), this.tryEntries.push(e);
+  }
+  function resetTryEntry(t) {
+    var e = t.completion || {};
+    e.type = "normal", delete e.arg, t.completion = e;
+  }
+  function Context(t) {
+    this.tryEntries = [{
+      tryLoc: "root"
+    }], t.forEach(pushTryEntry, this), this.reset(!0);
+  }
+  function values(e) {
+    if (e || "" === e) {
+      var r = e[a];
+      if (r) return r.call(e);
+      if ("function" == typeof e.next) return e;
+      if (!isNaN(e.length)) {
+        var o = -1,
+          i = function next() {
+            for (; ++o < e.length;) if (n.call(e, o)) return next.value = e[o], next.done = !1, next;
+            return next.value = t, next.done = !0, next;
+          };
+        return i.next = i;
+      }
+    }
+    throw new TypeError(_typeof(e) + " is not iterable");
+  }
+  return GeneratorFunction.prototype = GeneratorFunctionPrototype, o(g, "constructor", {
+    value: GeneratorFunctionPrototype,
+    configurable: !0
+  }), o(GeneratorFunctionPrototype, "constructor", {
+    value: GeneratorFunction,
+    configurable: !0
+  }), GeneratorFunction.displayName = define(GeneratorFunctionPrototype, u, "GeneratorFunction"), e.isGeneratorFunction = function (t) {
+    var e = "function" == typeof t && t.constructor;
+    return !!e && (e === GeneratorFunction || "GeneratorFunction" === (e.displayName || e.name));
+  }, e.mark = function (t) {
+    return Object.setPrototypeOf ? Object.setPrototypeOf(t, GeneratorFunctionPrototype) : (t.__proto__ = GeneratorFunctionPrototype, define(t, u, "GeneratorFunction")), t.prototype = Object.create(g), t;
+  }, e.awrap = function (t) {
+    return {
+      __await: t
+    };
+  }, defineIteratorMethods(AsyncIterator.prototype), define(AsyncIterator.prototype, c, function () {
+    return this;
+  }), e.AsyncIterator = AsyncIterator, e.async = function (t, r, n, o, i) {
+    void 0 === i && (i = Promise);
+    var a = new AsyncIterator(wrap(t, r, n, o), i);
+    return e.isGeneratorFunction(r) ? a : a.next().then(function (t) {
+      return t.done ? t.value : a.next();
+    });
+  }, defineIteratorMethods(g), define(g, u, "Generator"), define(g, a, function () {
+    return this;
+  }), define(g, "toString", function () {
+    return "[object Generator]";
+  }), e.keys = function (t) {
+    var e = Object(t),
+      r = [];
+    for (var n in e) r.push(n);
+    return r.reverse(), function next() {
+      for (; r.length;) {
+        var t = r.pop();
+        if (t in e) return next.value = t, next.done = !1, next;
+      }
+      return next.done = !0, next;
+    };
+  }, e.values = values, Context.prototype = {
+    constructor: Context,
+    reset: function reset(e) {
+      if (this.prev = 0, this.next = 0, this.sent = this._sent = t, this.done = !1, this.delegate = null, this.method = "next", this.arg = t, this.tryEntries.forEach(resetTryEntry), !e) for (var r in this) "t" === r.charAt(0) && n.call(this, r) && !isNaN(+r.slice(1)) && (this[r] = t);
+    },
+    stop: function stop() {
+      this.done = !0;
+      var t = this.tryEntries[0].completion;
+      if ("throw" === t.type) throw t.arg;
+      return this.rval;
+    },
+    dispatchException: function dispatchException(e) {
+      if (this.done) throw e;
+      var r = this;
+      function handle(n, o) {
+        return a.type = "throw", a.arg = e, r.next = n, o && (r.method = "next", r.arg = t), !!o;
+      }
+      for (var o = this.tryEntries.length - 1; o >= 0; --o) {
+        var i = this.tryEntries[o],
+          a = i.completion;
+        if ("root" === i.tryLoc) return handle("end");
+        if (i.tryLoc <= this.prev) {
+          var c = n.call(i, "catchLoc"),
+            u = n.call(i, "finallyLoc");
+          if (c && u) {
+            if (this.prev < i.catchLoc) return handle(i.catchLoc, !0);
+            if (this.prev < i.finallyLoc) return handle(i.finallyLoc);
+          } else if (c) {
+            if (this.prev < i.catchLoc) return handle(i.catchLoc, !0);
+          } else {
+            if (!u) throw Error("try statement without catch or finally");
+            if (this.prev < i.finallyLoc) return handle(i.finallyLoc);
+          }
+        }
+      }
+    },
+    abrupt: function abrupt(t, e) {
+      for (var r = this.tryEntries.length - 1; r >= 0; --r) {
+        var o = this.tryEntries[r];
+        if (o.tryLoc <= this.prev && n.call(o, "finallyLoc") && this.prev < o.finallyLoc) {
+          var i = o;
+          break;
+        }
+      }
+      i && ("break" === t || "continue" === t) && i.tryLoc <= e && e <= i.finallyLoc && (i = null);
+      var a = i ? i.completion : {};
+      return a.type = t, a.arg = e, i ? (this.method = "next", this.next = i.finallyLoc, y) : this.complete(a);
+    },
+    complete: function complete(t, e) {
+      if ("throw" === t.type) throw t.arg;
+      return "break" === t.type || "continue" === t.type ? this.next = t.arg : "return" === t.type ? (this.rval = this.arg = t.arg, this.method = "return", this.next = "end") : "normal" === t.type && e && (this.next = e), y;
+    },
+    finish: function finish(t) {
+      for (var e = this.tryEntries.length - 1; e >= 0; --e) {
+        var r = this.tryEntries[e];
+        if (r.finallyLoc === t) return this.complete(r.completion, r.afterLoc), resetTryEntry(r), y;
+      }
+    },
+    "catch": function _catch(t) {
+      for (var e = this.tryEntries.length - 1; e >= 0; --e) {
+        var r = this.tryEntries[e];
+        if (r.tryLoc === t) {
+          var n = r.completion;
+          if ("throw" === n.type) {
+            var o = n.arg;
+            resetTryEntry(r);
+          }
+          return o;
+        }
+      }
+      throw Error("illegal catch attempt");
+    },
+    delegateYield: function delegateYield(e, r, n) {
+      return this.delegate = {
+        iterator: values(e),
+        resultName: r,
+        nextLoc: n
+      }, "next" === this.method && (this.arg = t), y;
+    }
+  }, e;
+}
+function _classCallCheck(instance, Constructor) {
+  if (!(instance instanceof Constructor)) {
+    throw new TypeError("Cannot call a class as a function");
+  }
+}
+function _defineProperties(target, props) {
+  for (var i = 0; i < props.length; i++) {
+    var descriptor = props[i];
+    descriptor.enumerable = descriptor.enumerable || false;
+    descriptor.configurable = true;
+    if ("value" in descriptor) descriptor.writable = true;
+    Object.defineProperty(target, _toPropertyKey(descriptor.key), descriptor);
+  }
+}
+function _createClass(Constructor, protoProps, staticProps) {
+  if (protoProps) _defineProperties(Constructor.prototype, protoProps);
+  if (staticProps) _defineProperties(Constructor, staticProps);
+  Object.defineProperty(Constructor, "prototype", {
+    writable: false
+  });
+  return Constructor;
+}
+function _toPropertyKey(t) {
+  var i = _toPrimitive(t, "string");
+  return "symbol" == _typeof(i) ? i : i + "";
+}
+function _toPrimitive(t, r) {
+  if ("object" != _typeof(t) || !t) return t;
+  var e = t[Symbol.toPrimitive];
+  if (void 0 !== e) {
+    var i = e.call(t, r || "default");
+    if ("object" != _typeof(i)) return i;
+    throw new TypeError("@@toPrimitive must return a primitive value.");
+  }
+  return ("string" === r ? String : Number)(t);
+}
+function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) {
+  try {
+    var info = gen[key](arg);
+    var value = info.value;
+  } catch (error) {
+    reject(error);
+    return;
+  }
+  if (info.done) {
+    resolve(value);
+  } else {
+    Promise.resolve(value).then(_next, _throw);
+  }
+}
+function _asyncToGenerator(fn) {
+  return function () {
+    var self = this,
+      args = arguments;
+    return new Promise(function (resolve, reject) {
+      var gen = fn.apply(self, args);
+      function _next(value) {
+        asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value);
+      }
+      function _throw(err) {
+        asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err);
+      }
+      _next(undefined);
+    });
+  };
+}
+function getFileSource(_x) {
+  return _getFileSource.apply(this, arguments);
+}
+function _getFileSource() {
+  _getFileSource = _asyncToGenerator( /*#__PURE__*/_regeneratorRuntime().mark(function _callee(stream) {
+    var _stream$start;
+    var path, _yield$fsPromises$sta, size, start, end, actualSize;
+    return _regeneratorRuntime().wrap(function _callee$(_context) {
+      while (1) switch (_context.prev = _context.next) {
+        case 0:
+          path = stream.path.toString();
+          _context.next = 3;
+          return _fs.promises.stat(path);
+        case 3:
+          _yield$fsPromises$sta = _context.sent;
+          size = _yield$fsPromises$sta.size;
+          // The fs.ReadStream might be configured to not read from the beginning
+          // to the end, but instead from a slice in between. In this case, we consider
+          // that range to indicate the actual uploadable size.
+          // This happens, for example, if a fs.ReadStream is used with the `parallelUploads`
+          // option. There, the ReadStream is sliced into multiple ReadStreams to fit the number
+          // of number of `parallelUploads`. Each ReadStream has `start` and `end` set.
+          // Note: `stream.end` is Infinity by default, so we need the check `isFinite`.
+          // Note: `stream.end` is treated inclusively, so we need to add 1 here.
+          // See the comment in slice() for more context.
+          start = (_stream$start = stream.start) !== null && _stream$start !== void 0 ? _stream$start : 0;
+          end = Number.isFinite(stream.end) ? stream.end + 1 : size;
+          actualSize = end - start;
+          return _context.abrupt("return", new FileSource(stream, path, actualSize));
+        case 9:
+        case "end":
+          return _context.stop();
+      }
+    }, _callee);
+  }));
+  return _getFileSource.apply(this, arguments);
+}
+var FileSource = /*#__PURE__*/function () {
+  function FileSource(stream, path, size) {
+    _classCallCheck(this, FileSource);
+    this._stream = stream;
+    this._path = path;
+    this.size = size;
+  }
+  return _createClass(FileSource, [{
+    key: "slice",
+    value: function slice(start, end) {
+      var _this$_stream$start;
+      // The fs.ReadStream might be configured to not read from the beginning,
+      // but instead start at a different offset. The start value from the caller
+      // does not include the offset, so we need to add this offset to our range later.
+      // This happens, for example, if a fs.ReadStream is used with the `parallelUploads`
+      // option. First, the ReadStream is sliced into multiple ReadStreams to fit the number
+      // of number of `parallelUploads`. Each ReadStream has `start` set.
+      var offset = (_this$_stream$start = this._stream.start) !== null && _this$_stream$start !== void 0 ? _this$_stream$start : 0;
+      var stream = (0, _fs.createReadStream)(this._path, {
+        start: offset + start,
+        // The `end` option for createReadStream is treated inclusively
+        // (see https://nodejs.org/api/fs.html#fs_fs_createreadstream_path_options).
+        // However, the Buffer#slice(start, end) and also our Source#slice(start, end)
+        // method treat the end range exclusively, so we have to subtract 1.
+        // This prevents an off-by-one error when reporting upload progress.
+        end: offset + end - 1,
+        autoClose: true
+      });
+      stream.size = Math.min(end - start, this.size);
+      var done = stream.size >= this.size;
+      return Promise.resolve({
+        value: stream,
+        done: done
+      });
+    }
+  }, {
+    key: "close",
+    value: function close() {
+      this._stream.destroy();
+    }
+  }]);
+}();

frontend/node_modules/tus-js-client/lib.es5/node/sources/StreamSource.js

@@ -0,0 +1,546 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+function _typeof(o) {
+  "@babel/helpers - typeof";
+
+  return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) {
+    return typeof o;
+  } : function (o) {
+    return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o;
+  }, _typeof(o);
+}
+function _regeneratorRuntime() {
+  "use strict";
+
+  /*! regenerator-runtime -- Copyright (c) 2014-present, Facebook, Inc. -- license (MIT): https://github.com/facebook/regenerator/blob/main/LICENSE */
+  _regeneratorRuntime = function _regeneratorRuntime() {
+    return e;
+  };
+  var t,
+    e = {},
+    r = Object.prototype,
+    n = r.hasOwnProperty,
+    o = Object.defineProperty || function (t, e, r) {
+      t[e] = r.value;
+    },
+    i = "function" == typeof Symbol ? Symbol : {},
+    a = i.iterator || "@@iterator",
+    c = i.asyncIterator || "@@asyncIterator",
+    u = i.toStringTag || "@@toStringTag";
+  function define(t, e, r) {
+    return Object.defineProperty(t, e, {
+      value: r,
+      enumerable: !0,
+      configurable: !0,
+      writable: !0
+    }), t[e];
+  }
+  try {
+    define({}, "");
+  } catch (t) {
+    define = function define(t, e, r) {
+      return t[e] = r;
+    };
+  }
+  function wrap(t, e, r, n) {
+    var i = e && e.prototype instanceof Generator ? e : Generator,
+      a = Object.create(i.prototype),
+      c = new Context(n || []);
+    return o(a, "_invoke", {
+      value: makeInvokeMethod(t, r, c)
+    }), a;
+  }
+  function tryCatch(t, e, r) {
+    try {
+      return {
+        type: "normal",
+        arg: t.call(e, r)
+      };
+    } catch (t) {
+      return {
+        type: "throw",
+        arg: t
+      };
+    }
+  }
+  e.wrap = wrap;
+  var h = "suspendedStart",
+    l = "suspendedYield",
+    f = "executing",
+    s = "completed",
+    y = {};
+  function Generator() {}
+  function GeneratorFunction() {}
+  function GeneratorFunctionPrototype() {}
+  var p = {};
+  define(p, a, function () {
+    return this;
+  });
+  var d = Object.getPrototypeOf,
+    v = d && d(d(values([])));
+  v && v !== r && n.call(v, a) && (p = v);
+  var g = GeneratorFunctionPrototype.prototype = Generator.prototype = Object.create(p);
+  function defineIteratorMethods(t) {
+    ["next", "throw", "return"].forEach(function (e) {
+      define(t, e, function (t) {
+        return this._invoke(e, t);
+      });
+    });
+  }
+  function AsyncIterator(t, e) {
+    function invoke(r, o, i, a) {
+      var c = tryCatch(t[r], t, o);
+      if ("throw" !== c.type) {
+        var u = c.arg,
+          h = u.value;
+        return h && "object" == _typeof(h) && n.call(h, "__await") ? e.resolve(h.__await).then(function (t) {
+          invoke("next", t, i, a);
+        }, function (t) {
+          invoke("throw", t, i, a);
+        }) : e.resolve(h).then(function (t) {
+          u.value = t, i(u);
+        }, function (t) {
+          return invoke("throw", t, i, a);
+        });
+      }
+      a(c.arg);
+    }
+    var r;
+    o(this, "_invoke", {
+      value: function value(t, n) {
+        function callInvokeWithMethodAndArg() {
+          return new e(function (e, r) {
+            invoke(t, n, e, r);
+          });
+        }
+        return r = r ? r.then(callInvokeWithMethodAndArg, callInvokeWithMethodAndArg) : callInvokeWithMethodAndArg();
+      }
+    });
+  }
+  function makeInvokeMethod(e, r, n) {
+    var o = h;
+    return function (i, a) {
+      if (o === f) throw Error("Generator is already running");
+      if (o === s) {
+        if ("throw" === i) throw a;
+        return {
+          value: t,
+          done: !0
+        };
+      }
+      for (n.method = i, n.arg = a;;) {
+        var c = n.delegate;
+        if (c) {
+          var u = maybeInvokeDelegate(c, n);
+          if (u) {
+            if (u === y) continue;
+            return u;
+          }
+        }
+        if ("next" === n.method) n.sent = n._sent = n.arg;else if ("throw" === n.method) {
+          if (o === h) throw o = s, n.arg;
+          n.dispatchException(n.arg);
+        } else "return" === n.method && n.abrupt("return", n.arg);
+        o = f;
+        var p = tryCatch(e, r, n);
+        if ("normal" === p.type) {
+          if (o = n.done ? s : l, p.arg === y) continue;
+          return {
+            value: p.arg,
+            done: n.done
+          };
+        }
+        "throw" === p.type && (o = s, n.method = "throw", n.arg = p.arg);
+      }
+    };
+  }
+  function maybeInvokeDelegate(e, r) {
+    var n = r.method,
+      o = e.iterator[n];
+    if (o === t) return r.delegate = null, "throw" === n && e.iterator["return"] && (r.method = "return", r.arg = t, maybeInvokeDelegate(e, r), "throw" === r.method) || "return" !== n && (r.method = "throw", r.arg = new TypeError("The iterator does not provide a '" + n + "' method")), y;
+    var i = tryCatch(o, e.iterator, r.arg);
+    if ("throw" === i.type) return r.method = "throw", r.arg = i.arg, r.delegate = null, y;
+    var a = i.arg;
+    return a ? a.done ? (r[e.resultName] = a.value, r.next = e.nextLoc, "return" !== r.method && (r.method = "next", r.arg = t), r.delegate = null, y) : a : (r.method = "throw", r.arg = new TypeError("iterator result is not an object"), r.delegate = null, y);
+  }
+  function pushTryEntry(t) {
+    var e = {
+      tryLoc: t[0]
+    };
+    1 in t && (e.catchLoc = t[1]), 2 in t && (e.finallyLoc = t[2], e.afterLoc = t[3]), this.tryEntries.push(e);
+  }
+  function resetTryEntry(t) {
+    var e = t.completion || {};
+    e.type = "normal", delete e.arg, t.completion = e;
+  }
+  function Context(t) {
+    this.tryEntries = [{
+      tryLoc: "root"
+    }], t.forEach(pushTryEntry, this), this.reset(!0);
+  }
+  function values(e) {
+    if (e || "" === e) {
+      var r = e[a];
+      if (r) return r.call(e);
+      if ("function" == typeof e.next) return e;
+      if (!isNaN(e.length)) {
+        var o = -1,
+          i = function next() {
+            for (; ++o < e.length;) if (n.call(e, o)) return next.value = e[o], next.done = !1, next;
+            return next.value = t, next.done = !0, next;
+          };
+        return i.next = i;
+      }
+    }
+    throw new TypeError(_typeof(e) + " is not iterable");
+  }
+  return GeneratorFunction.prototype = GeneratorFunctionPrototype, o(g, "constructor", {
+    value: GeneratorFunctionPrototype,
+    configurable: !0
+  }), o(GeneratorFunctionPrototype, "constructor", {
+    value: GeneratorFunction,
+    configurable: !0
+  }), GeneratorFunction.displayName = define(GeneratorFunctionPrototype, u, "GeneratorFunction"), e.isGeneratorFunction = function (t) {
+    var e = "function" == typeof t && t.constructor;
+    return !!e && (e === GeneratorFunction || "GeneratorFunction" === (e.displayName || e.name));
+  }, e.mark = function (t) {
+    return Object.setPrototypeOf ? Object.setPrototypeOf(t, GeneratorFunctionPrototype) : (t.__proto__ = GeneratorFunctionPrototype, define(t, u, "GeneratorFunction")), t.prototype = Object.create(g), t;
+  }, e.awrap = function (t) {
+    return {
+      __await: t
+    };
+  }, defineIteratorMethods(AsyncIterator.prototype), define(AsyncIterator.prototype, c, function () {
+    return this;
+  }), e.AsyncIterator = AsyncIterator, e.async = function (t, r, n, o, i) {
+    void 0 === i && (i = Promise);
+    var a = new AsyncIterator(wrap(t, r, n, o), i);
+    return e.isGeneratorFunction(r) ? a : a.next().then(function (t) {
+      return t.done ? t.value : a.next();
+    });
+  }, defineIteratorMethods(g), define(g, u, "Generator"), define(g, a, function () {
+    return this;
+  }), define(g, "toString", function () {
+    return "[object Generator]";
+  }), e.keys = function (t) {
+    var e = Object(t),
+      r = [];
+    for (var n in e) r.push(n);
+    return r.reverse(), function next() {
+      for (; r.length;) {
+        var t = r.pop();
+        if (t in e) return next.value = t, next.done = !1, next;
+      }
+      return next.done = !0, next;
+    };
+  }, e.values = values, Context.prototype = {
+    constructor: Context,
+    reset: function reset(e) {
+      if (this.prev = 0, this.next = 0, this.sent = this._sent = t, this.done = !1, this.delegate = null, this.method = "next", this.arg = t, this.tryEntries.forEach(resetTryEntry), !e) for (var r in this) "t" === r.charAt(0) && n.call(this, r) && !isNaN(+r.slice(1)) && (this[r] = t);
+    },
+    stop: function stop() {
+      this.done = !0;
+      var t = this.tryEntries[0].completion;
+      if ("throw" === t.type) throw t.arg;
+      return this.rval;
+    },
+    dispatchException: function dispatchException(e) {
+      if (this.done) throw e;
+      var r = this;
+      function handle(n, o) {
+        return a.type = "throw", a.arg = e, r.next = n, o && (r.method = "next", r.arg = t), !!o;
+      }
+      for (var o = this.tryEntries.length - 1; o >= 0; --o) {
+        var i = this.tryEntries[o],
+          a = i.completion;
+        if ("root" === i.tryLoc) return handle("end");
+        if (i.tryLoc <= this.prev) {
+          var c = n.call(i, "catchLoc"),
+            u = n.call(i, "finallyLoc");
+          if (c && u) {
+            if (this.prev < i.catchLoc) return handle(i.catchLoc, !0);
+            if (this.prev < i.finallyLoc) return handle(i.finallyLoc);
+          } else if (c) {
+            if (this.prev < i.catchLoc) return handle(i.catchLoc, !0);
+          } else {
+            if (!u) throw Error("try statement without catch or finally");
+            if (this.prev < i.finallyLoc) return handle(i.finallyLoc);
+          }
+        }
+      }
+    },
+    abrupt: function abrupt(t, e) {
+      for (var r = this.tryEntries.length - 1; r >= 0; --r) {
+        var o = this.tryEntries[r];
+        if (o.tryLoc <= this.prev && n.call(o, "finallyLoc") && this.prev < o.finallyLoc) {
+          var i = o;
+          break;
+        }
+      }
+      i && ("break" === t || "continue" === t) && i.tryLoc <= e && e <= i.finallyLoc && (i = null);
+      var a = i ? i.completion : {};
+      return a.type = t, a.arg = e, i ? (this.method = "next", this.next = i.finallyLoc, y) : this.complete(a);
+    },
+    complete: function complete(t, e) {
+      if ("throw" === t.type) throw t.arg;
+      return "break" === t.type || "continue" === t.type ? this.next = t.arg : "return" === t.type ? (this.rval = this.arg = t.arg, this.method = "return", this.next = "end") : "normal" === t.type && e && (this.next = e), y;
+    },
+    finish: function finish(t) {
+      for (var e = this.tryEntries.length - 1; e >= 0; --e) {
+        var r = this.tryEntries[e];
+        if (r.finallyLoc === t) return this.complete(r.completion, r.afterLoc), resetTryEntry(r), y;
+      }
+    },
+    "catch": function _catch(t) {
+      for (var e = this.tryEntries.length - 1; e >= 0; --e) {
+        var r = this.tryEntries[e];
+        if (r.tryLoc === t) {
+          var n = r.completion;
+          if ("throw" === n.type) {
+            var o = n.arg;
+            resetTryEntry(r);
+          }
+          return o;
+        }
+      }
+      throw Error("illegal catch attempt");
+    },
+    delegateYield: function delegateYield(e, r, n) {
+      return this.delegate = {
+        iterator: values(e),
+        resultName: r,
+        nextLoc: n
+      }, "next" === this.method && (this.arg = t), y;
+    }
+  }, e;
+}
+function _classCallCheck(instance, Constructor) {
+  if (!(instance instanceof Constructor)) {
+    throw new TypeError("Cannot call a class as a function");
+  }
+}
+function _defineProperties(target, props) {
+  for (var i = 0; i < props.length; i++) {
+    var descriptor = props[i];
+    descriptor.enumerable = descriptor.enumerable || false;
+    descriptor.configurable = true;
+    if ("value" in descriptor) descriptor.writable = true;
+    Object.defineProperty(target, _toPropertyKey(descriptor.key), descriptor);
+  }
+}
+function _createClass(Constructor, protoProps, staticProps) {
+  if (protoProps) _defineProperties(Constructor.prototype, protoProps);
+  if (staticProps) _defineProperties(Constructor, staticProps);
+  Object.defineProperty(Constructor, "prototype", {
+    writable: false
+  });
+  return Constructor;
+}
+function _toPropertyKey(t) {
+  var i = _toPrimitive(t, "string");
+  return "symbol" == _typeof(i) ? i : i + "";
+}
+function _toPrimitive(t, r) {
+  if ("object" != _typeof(t) || !t) return t;
+  var e = t[Symbol.toPrimitive];
+  if (void 0 !== e) {
+    var i = e.call(t, r || "default");
+    if ("object" != _typeof(i)) return i;
+    throw new TypeError("@@toPrimitive must return a primitive value.");
+  }
+  return ("string" === r ? String : Number)(t);
+}
+function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) {
+  try {
+    var info = gen[key](arg);
+    var value = info.value;
+  } catch (error) {
+    reject(error);
+    return;
+  }
+  if (info.done) {
+    resolve(value);
+  } else {
+    Promise.resolve(value).then(_next, _throw);
+  }
+}
+function _asyncToGenerator(fn) {
+  return function () {
+    var self = this,
+      args = arguments;
+    return new Promise(function (resolve, reject) {
+      var gen = fn.apply(self, args);
+      function _next(value) {
+        asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value);
+      }
+      function _throw(err) {
+        asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err);
+      }
+      _next(undefined);
+    });
+  };
+}
+/**
+ * readChunk reads a chunk with the given size from the given
+ * stream. It will wait until enough data is available to satisfy
+ * the size requirement before resolving.
+ * Only if the stream ends, the function may resolve with a buffer
+ * smaller than the size argument.
+ * Note that we rely on the stream behaving as Node.js documents:
+ * https://nodejs.org/api/stream.html#readablereadsize
+ */
+function readChunk(_x, _x2) {
+  return _readChunk.apply(this, arguments);
+}
+/**
+ * StreamSource provides an interface to obtain slices of a Readable stream for
+ * various ranges.
+ * It will buffer read data, to allow for following pattern:
+ * - Call slice(startA, endA) will buffer the data of the requested range
+ * - Call slice(startB, endB) will return data from the buffer if startA <= startB <= endA.
+ *   If endB > endA, it will also consume new data from the stream.
+ * Note that it is forbidden to call with startB < startA or startB > endA. In other words,
+ * the slice calls cannot seek back and must not skip data from the stream.
+ */
+function _readChunk() {
+  _readChunk = _asyncToGenerator( /*#__PURE__*/_regeneratorRuntime().mark(function _callee2(stream, size) {
+    return _regeneratorRuntime().wrap(function _callee2$(_context2) {
+      while (1) switch (_context2.prev = _context2.next) {
+        case 0:
+          return _context2.abrupt("return", new Promise(function (resolve, reject) {
+            var onError = function onError(err) {
+              stream.off('readable', onReadable);
+              reject(err);
+            };
+            var onReadable = function onReadable() {
+              // TODO: Node requires size to be less than 1GB. Add a validation for that
+              var chunk = stream.read(size);
+              if (chunk !== null) {
+                stream.off('error', onError);
+                stream.off('readable', onReadable);
+                resolve(chunk);
+              }
+            };
+            stream.once('error', onError);
+            stream.on('readable', onReadable);
+          }));
+        case 1:
+        case "end":
+          return _context2.stop();
+      }
+    }, _callee2);
+  }));
+  return _readChunk.apply(this, arguments);
+}
+var StreamSource = exports.default = /*#__PURE__*/function () {
+  function StreamSource(stream) {
+    var _this = this;
+    _classCallCheck(this, StreamSource);
+    this._stream = stream;
+
+    // Setting the size to null indicates that we have no calculation available
+    // for how much data this stream will emit requiring the user to specify
+    // it manually (see the `uploadSize` option).
+    this.size = null;
+    this._buf = Buffer.alloc(0);
+    this._bufPos = 0;
+    this._ended = false;
+    this._error = null;
+    stream.pause();
+    stream.on('end', function () {
+      _this._ended = true;
+    });
+    stream.on('error', function (err) {
+      _this._error = err;
+    });
+  }
+  return _createClass(StreamSource, [{
+    key: "slice",
+    value: function () {
+      var _slice = _asyncToGenerator( /*#__PURE__*/_regeneratorRuntime().mark(function _callee(start, end) {
+        var returnBuffer, bufStart, bufEnd, requestedSize, newChunk;
+        return _regeneratorRuntime().wrap(function _callee$(_context) {
+          while (1) switch (_context.prev = _context.next) {
+            case 0:
+              if (!(start < this._bufPos)) {
+                _context.next = 2;
+                break;
+              }
+              throw new Error('cannot slice from position which we already seeked away');
+            case 2:
+              if (!(start > this._bufPos + this._buf.length)) {
+                _context.next = 4;
+                break;
+              }
+              throw new Error('slice start is outside of buffer (currently not implemented)');
+            case 4:
+              if (!this._error) {
+                _context.next = 6;
+                break;
+              }
+              throw this._error;
+            case 6:
+              // Always attempt to drain the buffer first, even if this means that we
+              // return less data than the caller requested.
+              if (start < this._bufPos + this._buf.length) {
+                bufStart = start - this._bufPos;
+                bufEnd = Math.min(this._buf.length, end - this._bufPos);
+                returnBuffer = this._buf.slice(bufStart, bufEnd);
+              } else {
+                returnBuffer = Buffer.alloc(0);
+              }
+
+              // If the stream has ended already, read calls would not finish, so return early here.
+              if (!this._ended) {
+                _context.next = 10;
+                break;
+              }
+              returnBuffer.size = returnBuffer.length;
+              return _context.abrupt("return", {
+                value: returnBuffer,
+                done: true
+              });
+            case 10:
+              // If we could not satisfy the slice request from the buffer only, read more data from
+              // the stream and add it to the buffer.
+              requestedSize = end - start;
+              if (!(requestedSize > returnBuffer.length)) {
+                _context.next = 16;
+                break;
+              }
+              _context.next = 14;
+              return readChunk(this._stream, requestedSize - returnBuffer.length);
+            case 14:
+              newChunk = _context.sent;
+              // Append the new chunk to the buffer
+              returnBuffer = Buffer.concat([returnBuffer, newChunk]);
+            case 16:
+              // Important: Store the read data, so consecutive slice calls can access the same data.
+              this._buf = returnBuffer;
+              this._bufPos = start;
+              returnBuffer.size = returnBuffer.length;
+              return _context.abrupt("return", {
+                value: returnBuffer,
+                done: this._ended
+              });
+            case 20:
+            case "end":
+              return _context.stop();
+          }
+        }, _callee, this);
+      }));
+      function slice(_x3, _x4) {
+        return _slice.apply(this, arguments);
+      }
+      return slice;
+    }()
+  }, {
+    key: "close",
+    value: function close() {
+      this._stream.destroy();
+    }
+  }]);
+}();