status-channels-dapp/js/dapp.js

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/*!
 * The buffer module from node.js, for the browser.
 *
 * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
 * @license  MIT
 */
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/** PROMISIFY CALLBACK-STYLE FUNCTIONS TO ES6 PROMISES
*
* EXAMPLE:
* const fn = promisify( (callback) => callback(null, "Hello world!") );
* fn((err, str) => console.log(str));
* fn().then((str) => console.log(str));
* //Both functions, will log 'Hello world!'
*
* Note: The function you pass, may have any arguments you want, but the latest
* have to be the callback, which you will call with: next(err, value)
*
* @param method: Function/Array/Map = The function(s) to promisify
* @param options: Map =
*  "context" (default is function): The context which to apply the called function
*  "replace" (default is falsy): When passed an array/map, if to replace the original object
*
* @return: A promise if passed a function, otherwise the object with the promises
*
* @license: MIT
* @version: 1.0.3
* @author: Manuel Di Iorio
**/
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/*!
 * The buffer module from node.js, for the browser.
 *
 * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
 * @license  MIT
 */
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(c) Sindre Sorhus
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/*
object-assign
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/** @license React v0.12.0
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/**
 * [js-sha3]{@link https://github.com/emn178/js-sha3}
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 * @author Chen, Yi-Cyuan [emn178@gmail.com]
 * @copyright Chen, Yi-Cyuan 2015-2017
 * @license MIT
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/**
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 * @license MIT
 */
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//! stable.js 0.1.8, https://github.com/Two-Screen/stable
//! © 2018 Angry Bytes and contributors. MIT licensed.
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/**
 * @license
 * Lodash <https://lodash.com/>
 * Copyright JS Foundation and other contributors <https://js.foundation/>
 * Released under MIT license <https://lodash.com/license>
 * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
 * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
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/**
 * @file Web Cryptography API shim
 * @author Artem S Vybornov <vybornov@gmail.com>
 * @license MIT
 */
t.exports=function(t){"use strict";if("function"!=typeof Promise)throw"Promise support required";var e=t.crypto||t.msCrypto;if(e){var r=e.subtle||e.webkitSubtle;if(r){var n=t.Crypto||e.constructor||Object,i=t.SubtleCrypto||r.constructor||Object,o=(t.CryptoKey||t.Key||Object,t.navigator.userAgent.indexOf("Edge/")>-1),a=!!t.msCrypto&&!o,s=!e.subtle&&!!e.webkitSubtle;if(a||s){var u={KoZIhvcNAQEB:"1.2.840.113549.1.1.1"},c={"1.2.840.113549.1.1.1":"KoZIhvcNAQEB"};if(["generateKey","importKey","unwrapKey"].forEach(function(t){var n=r[t];r[t]=function(i,o,u){var c,f,b,S,E=[].slice.call(arguments);switch(t){case"generateKey":c=m(i),f=o,b=u;break;case"importKey":c=m(u),f=E[3],b=E[4],"jwk"===i&&((o=v(o)).alg||(o.alg=g(c)),o.key_ops||(o.key_ops="oct"!==o.kty?"d"in o?b.filter(k):b.filter(_):b.slice()),E[1]=function(t){var e=v(t);return a&&(e.extractable=e.ext,delete e.ext),d(unescape(encodeURIComponent(JSON.stringify(e)))).buffer}(o));break;case"unwrapKey":c=E[4],f=E[5],b=E[6],E[2]=u._key}if("generateKey"===t&&"HMAC"===c.name&&c.hash)return c.length=c.length||{"SHA-1":512,"SHA-256":512,"SHA-384":1024,"SHA-512":1024}[c.hash.name],r.importKey("raw",e.getRandomValues(new Uint8Array(c.length+7>>3)),c,f,b);if(s&&"generateKey"===t&&"RSASSA-PKCS1-v1_5"===c.name&&(!c.modulusLength||c.modulusLength>=2048))return(i=m(i)).name="RSAES-PKCS1-v1_5",delete i.hash,r.generateKey(i,!0,["encrypt","decrypt"]).then(function(t){return Promise.all([r.exportKey("jwk",t.publicKey),r.exportKey("jwk",t.privateKey)])}).then(function(t){return t[0].alg=t[1].alg=g(c),t[0].key_ops=b.filter(_),t[1].key_ops=b.filter(k),Promise.all([r.importKey("jwk",t[0],c,!0,t[0].key_ops),r.importKey("jwk",t[1],c,f,t[1].key_ops)])}).then(function(t){return{publicKey:t[0],privateKey:t[1]}});if((s||a&&"SHA-1"===(c.hash||{}).name)&&"importKey"===t&&"jwk"===i&&"HMAC"===c.name&&"oct"===o.kty)return r.importKey("raw",d(h(o.k)),u,E[3],E[4]);if(s&&"importKey"===t&&("spki"===i||"pkcs8"===i))return r.importKey("jwk",function(t){var e=y(t),r=!1;e.length>2&&(r=!0,e.shift());var n={ext:!0};switch(e[0][0]){case"1.2.840.113549.1.1.1":var i=["n","e","d","p","q","dp","dq","qi"],o=y(e[1]);r&&o.shift();for(var a=0;a<o.length;a++)o[a][0]||(o[a]=o[a].subarray(1)),n[i[a]]=l(p(o[a]));n.kty="RSA";break;default:throw new TypeError("Unsupported key type")}return n}(o),u,E[3],E[4]);if(a&&"unwrapKey"===t)return r.decrypt(E[3],u,o).then(function(t){return r.importKey(i,t,E[4],E[5],E[6])});try{S=n.apply(r,E)}catch(t){return Promise.reject(t)}return a&&(S=new Promise(function(t,e){S.onabort=S.onerror=function(t){e(t)},S.oncomplete=function(e){t(e.target.result)}})),S=S.then(function(t){return"HMAC"===c.name&&(c.length||(c.length=8*t.algorithm.length)),0==c.name.search("RSA")&&(c.modulusLength||(c.modulusLength=(t.publicKey||t).algorithm.modulusLength),c.publicExponent||(c.publicExponent=(t.publicKey||t).algorithm.publicExponent)),t=t.publicKey&&t.privateKey?{publicKey:new w(t.publicKey,c,f,b.filter(_)),privateKey:new w(t.privateKey,c,f,b.filter(k))}:new w(t,c,f,b)})}}),["exportKey","wrapKey"].forEach(function(t){var e=r[t];r[t]=function(n,i,o){var u,c=[].slice.call(arguments);switch(t){case"exportKey":c[1]=i._key;break;case"wrapKey":c[1]=i._key,c[2]=o._key}if((s||a&&"SHA-1"===(i.algorithm.hash||{}).name)&&"exportKey"===t&&"jwk"===n&&"HMAC"===i.algorithm.name&&(c[0]="raw"),!s||"exportKey"!==t||"spki"!==n&&"pkcs8"!==n||(c[0]="jwk"),a&&"wrapKey"===t)return r.exportKey(n,i).then(function(t){return"jwk"===n&&(t=d(unescape(encodeURIComponent(JSON.stringify(v(t)))))),r.encrypt(c[3],o,t)});try{u=e.apply(r,c)}catch(t){return Promise.reject(t)}return a&&(u=new Promise(function(t,e){u.onabort=u.onerror=function(t){e(t)},u.oncomplete=function(e){t(e.target.result)}})),"exportKey"===t&&"jwk"===n&&(u=u.then(function(t){return(s||a&&"SHA-1"===(i.algorithm.hash||{}).name)&&"HMAC"===i.algorithm.name?{kty:"oct",alg:g(i.algorithm),key_ops:i.usages.slice(),ext:!0,k:l(p(t))}:((t=v(t)).alg||(t.alg=g(i.algorithm)),t.key_ops||(t.key_ops="public"===i.type?i.usages.filter(_):"private"===i.type?i.usages.filter(k):i.usages.slice()),t)})),