trezor-link/lib/bridge/http.js

'use strict';

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.setFetch = setFetch;
exports.request = request;

Function.prototype.$asyncbind = function $asyncbind(self, catcher) {
  'use strict';

  if (!Function.prototype.$asyncbind) {
    Object.defineProperty(Function.prototype, '$asyncbind', {
      value: $asyncbind,
      enumerable: false,
      configurable: true,
      writable: true
    });
  }

  if (!$asyncbind.trampoline) {
    $asyncbind.trampoline = function trampoline(t, x, s, e) {
      return function b(q) {
        while (q) {
          if (q.then) return q.then(b, e);

          try {
            if (q.pop) {
              if (q.length) return q.pop() ? x.call(t) : q;
              q = s;
            } else q = q.call(t);
          } catch (r) {
            return e(r);
          }
        }
      };
    };
  }

  if (!$asyncbind.LazyThenable) {
    $asyncbind.LazyThenable = function () {
      function isThenable(obj) {
        return obj && obj instanceof Object && typeof obj.then === 'function';
      }

      function resolution(p, r, how) {
        try {
          var x = how ? how(r) : r;
          if (p === x) return p.reject(new TypeError('Promise resolution loop'));

          if (isThenable(x)) {
            x.then(function (y) {
              resolution(p, y);
            }, function (e) {
              p.reject(e);
            });
          } else {
            p.resolve(x);
          }
        } catch (ex) {
          p.reject(ex);
        }
      }

      function Chained() {}

      ;
      Chained.prototype = {
        resolve: _unchained,
        reject: _unchained,
        then: thenChain
      };

      function _unchained(v) {}

      function thenChain(res, rej) {
        this.resolve = res;
        this.reject = rej;
      }

      function then(res, rej) {
        var chain = new Chained();

        try {
          this._resolver(function (value) {
            return isThenable(value) ? value.then(res, rej) : resolution(chain, value, res);
          }, function (ex) {
            resolution(chain, ex, rej);
          });
        } catch (ex) {
          resolution(chain, ex, rej);
        }

        return chain;
      }

      function Thenable(resolver) {
        this._resolver = resolver;
        this.then = then;
      }

      ;

      Thenable.resolve = function (v) {
        return Thenable.isThenable(v) ? v : {
          then: function then(resolve) {
            return resolve(v);
          }
        };
      };

      Thenable.isThenable = isThenable;
      return Thenable;
    }();

    $asyncbind.EagerThenable = $asyncbind.Thenable = ($asyncbind.EagerThenableFactory = function (tick) {
      tick = tick || (typeof process === 'undefined' ? 'undefined' : _typeof(process)) === 'object' && process.nextTick || typeof setImmediate === 'function' && setImmediate || function (f) {
        setTimeout(f, 0);
      };

      var soon = function () {
        var fq = [],
            fqStart = 0,
            bufferSize = 1024;

        function callQueue() {
          while (fq.length - fqStart) {
            fq[fqStart]();
            fq[fqStart++] = undefined;

            if (fqStart === bufferSize) {
              fq.splice(0, bufferSize);
              fqStart = 0;
            }
          }
        }

        return function (fn) {
          fq.push(fn);
          if (fq.length - fqStart === 1) tick(callQueue);
        };
      }();

      function Zousan(func) {
        if (func) {
          var me = this;
          func(function (arg) {
            me.resolve(arg);
          }, function (arg) {
            me.reject(arg);
          });
        }
      }

      Zousan.prototype = {
        resolve: function resolve(value) {
          if (this.state !== undefined) return;
          if (value === this) return this.reject(new TypeError('Attempt to resolve promise with self'));
          var me = this;

          if (value && (typeof value === 'function' || (typeof value === 'undefined' ? 'undefined' : _typeof(value)) === 'object')) {
            try {
              var first = 0;
              var then = value.then;

              if (typeof then === 'function') {
                then.call(value, function (ra) {
                  if (!first++) {
                    me.resolve(ra);
                  }
                }, function (rr) {
                  if (!first++) {
                    me.reject(rr);
                  }
                });
                return;
              }
            } catch (e) {
              if (!first) this.reject(e);
              return;
            }
          }

          this.state = STATE_FULFILLED;
          this.v = value;
          if (me.c) soon(function () {
            for (var n = 0, l = me.c.length; n < l; n++) {
              STATE_FULFILLED(me.c[n], value);
            }
          });
        },
        reject: function reject(reason) {
          if (this.state !== undefined) return;
          this.state = STATE_REJECTED;
          this.v = reason;
          var clients = this.c;
          if (clients) soon(function () {
            for (var n = 0, l = clients.length; n < l; n++) {
              STATE_REJECTED(clients[n], reason);
            }
          });
        },
        then: function then(onF, onR) {
          var p = new Zousan();
          var client = {
            y: onF,
            n: onR,
            p: p
          };

          if (this.state === undefined) {
            if (this.c) this.c.push(client);else this.c = [client];
          } else {
            var s = this.state,
                a = this.v;
            soon(function () {
              s(client, a);
            });
          }

          return p;
        }
      };

      function STATE_FULFILLED(c, arg) {
        if (typeof c.y === 'function') {
          try {
            var yret = c.y.call(undefined, arg);
            c.p.resolve(yret);
          } catch (err) {
            c.p.reject(err);
          }
        } else c.p.resolve(arg);
      }

      function STATE_REJECTED(c, reason) {
        if (typeof c.n === 'function') {
          try {
            var yret = c.n.call(undefined, reason);
            c.p.resolve(yret);
          } catch (err) {
            c.p.reject(err);
          }
        } else c.p.reject(reason);
      }

      Zousan.resolve = function (val) {
        if (val && val instanceof Zousan) return val;
        var z = new Zousan();
        z.resolve(val);
        return z;
      };

      Zousan.reject = function (err) {
        if (err && err instanceof Zousan) return err;
        var z = new Zousan();
        z.reject(err);
        return z;
      };

      Zousan.version = '2.3.2-nodent';
      return Zousan;
    })();
  }

  var resolver = this;

  switch (catcher) {
    case true:
      return new $asyncbind.Thenable(boundThen);

    case 0:
      return new $asyncbind.LazyThenable(boundThen);

    case undefined:
      boundThen.then = boundThen;
      return boundThen;

    default:
      return function () {
        try {
          return resolver.apply(self, arguments);
        } catch (ex) {
          return catcher(ex);
        }
      };
  }

  function boundThen() {
    return resolver.apply(self, arguments);
  }
};

// slight hack to make Flow happy, but to allow Node to set its own fetch
// Request, RequestOptions and Response are built-in types of Flow for fetch API
var _fetch = typeof window === 'undefined' ? function () {
  return Promise.reject();
} : window.fetch;

function setFetch(fetch) {
  _fetch = fetch;
}

function contentType(body) {
  if (typeof body === 'string') {
    if (body === '') {
      return 'text/plain';
    }
    return 'application/octet-stream';
  } else {
    return 'application/json';
  }
}

function wrapBody(body) {
  if (typeof body === 'string') {
    return body;
  } else {
    return JSON.stringify(body);
  }
}

function parseResult(text) {
  try {
    return JSON.parse(text);
  } catch (e) {
    return text;
  }
}

function request(options) {
  return new Promise(function ($return, $error) {
    var res, resText, resJson;
    return _fetch(options.url, {
      method: options.method,
      headers: {
        'Content-Type': contentType(options.body || '')
      },
      body: wrapBody(options.body)
    }).then(function ($await_2) {
      res = $await_2;
      return res.text().then(function ($await_3) {
        resText = $await_3;
        if (res.ok) {
          return $return(parseResult(resText));
        } else {
          resJson = parseResult(resText);
          if (resJson.error) {
            return $error(new Error(resJson.error));
          } else {
            return $error(new Error(resText));
          }
        }
        return $return();
      }.$asyncbind(this, $error), $error);
    }.$asyncbind(this, $error), $error);
  }.$asyncbind(this));
}