@polkadot/api-provider/mock/state.js

Transport providers for the API

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

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

require("core-js/modules/web.dom.iterable");

var _eventemitter = _interopRequireDefault(require("eventemitter3"));

var _index = _interopRequireDefault(require("@polkadot/jsonrpc/index"));

var _toHex = _interopRequireDefault(require("@polkadot/util/u8a/toHex"));

var _logger = _interopRequireDefault(require("@polkadot/util/logger"));

// Copyright 2017-2018 @polkadot/api-provider authors & contributors
// This software may be modified and distributed under the terms
// of the ISC license. See the LICENSE file for details.
const l = (0, _logger.default)('api-mock');
const SUBSCRIPTIONS = Array.prototype.concat.apply([], Object.values(_index.default).map(area => Object.values(area.methods).filter(method => method.isSubscription).map(({
  method,
  section
}) => `${section}_${method}`)));
const REQUESTS = {
  'state_getStorage': (storage, params) => {
    return (0, _toHex.default)(storage[params[0]]);
  },
  'system_chain': () => 'mockChain',
  'system_name': () => 'mockClient',
  'system_version': () => '9.8.7'
};

function state() {
  const db = {};
  const subscriptions = SUBSCRIPTIONS.reduce((subs, name) => {
    subs[name] = {
      callbacks: {},
      lastValue: null
    };
    return subs;
  }, {});
  return {
    emitter: new _eventemitter.default.EventEmitter(),
    l,
    requests: Object.assign({}, REQUESTS),
    db,
    subscriptionId: 0,
    subscriptionMap: {},
    subscriptions
  };
}