diff --git a/src/eventSyncer.js b/src/eventSyncer.js
index e20d56d..d303f28 100644
--- a/src/eventSyncer.js
+++ b/src/eventSyncer.js
@@ -1,5 +1,5 @@
 const { fromEvent, interval, ReplaySubject } = require('rxjs');
-const { throttle, filter } = require('rxjs/operators');
+const { throttle, filter, distinctUntilChanged } = require('rxjs/operators');
 const loki = require('lokijs')
 const Events = require('events')
 
@@ -164,8 +164,7 @@ class EventSyncer {
       }])
     })
 
-    // TODO: add distinctUntilChanged
-    return sub;
+    return sub.pipe(distinctUntilChanged());
   }
 
 }
diff --git a/test/test3.js b/test/test3.js
index 5ea6bb1..01a887d 100644
--- a/test/test3.js
+++ b/test/test3.js
@@ -151,6 +151,12 @@ async function run() {
     await SimpleStorageContract.methods.set(100).send({ from: accounts[0], gas: 4700000 })
     console.dir("set 200")
     await SimpleStorageContract.methods.set2(200).send({ from: accounts[0] })
+    console.dir("set 200")
+    await SimpleStorageContract.methods.set2(200).send({ from: accounts[0] })
+    console.dir("set 300")
+    await SimpleStorageContract.methods.set(300).send({ from: accounts[0] })
+    console.dir("set 300")
+    await SimpleStorageContract.methods.set(300).send({ from: accounts[0] })
     console.dir("set 300")
     await SimpleStorageContract.methods.set(300).send({ from: accounts[0] })
 
diff --git a/yarn.lock b/yarn.lock
index aa938f2..07da248 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -655,6 +655,18 @@
     lodash "^4.17.13"
     to-fast-properties "^2.0.0"
 
+"@sindresorhus/is@^0.14.0":
+  version "0.14.0"
+  resolved "https://registry.yarnpkg.com/@sindresorhus/is/-/is-0.14.0.tgz#9fb3a3cf3132328151f353de4632e01e52102bea"
+  integrity sha512-9NET910DNaIPngYnLLPeg+Ogzqsi9uM4mSboU5y6p8S5DzMTVEsJZrawi+BoDNUVBa2DhJqQYUFvMDfgU062LQ==
+
+"@szmarczak/http-timer@^1.1.2":
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/@szmarczak/http-timer/-/http-timer-1.1.2.tgz#b1665e2c461a2cd92f4c1bbf50d5454de0d4b421"
+  integrity sha512-XIB2XbzHTN6ieIjfIMV9hlVcfPU26s2vafYWQcZHWXHOxiaRZYEDKEwdl129Zyg50+foYV2jCgtrqSA6qNuNSA==
+  dependencies:
+    defer-to-connect "^1.0.1"
+
 "@types/node@^10.3.2":
   version "10.14.8"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-10.14.8.tgz#fe444203ecef1162348cd6deb76c62477b2cc6e9"
@@ -891,7 +903,7 @@ ansi-styles@^3.2.0, ansi-styles@^3.2.1:
   dependencies:
     color-convert "^1.9.0"
 
-any-promise@1.3.0, any-promise@^1.0.0, any-promise@^1.3.0:
+any-promise@1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/any-promise/-/any-promise-1.3.0.tgz#abc6afeedcea52e809cdc0376aed3ce39635d17f"
   integrity sha1-q8av7tzqUugJzcA3au0845Y10X8=
@@ -1097,18 +1109,6 @@ bl@^1.0.0:
     readable-stream "^2.3.5"
     safe-buffer "^5.1.1"
 
-block-stream@*:
-  version "0.0.9"
-  resolved "https://registry.yarnpkg.com/block-stream/-/block-stream-0.0.9.tgz#13ebfe778a03205cfe03751481ebb4b3300c126a"
-  integrity sha1-E+v+d4oDIFz+A3UUgeu0szAMEmo=
-  dependencies:
-    inherits "~2.0.0"
-
-bluebird@^2.9.34:
-  version "2.11.0"
-  resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-2.11.0.tgz#534b9033c022c9579c56ba3b3e5a5caafbb650e1"
-  integrity sha1-U0uQM8AiyVecVro7Plpcqvu2UOE=
-
 bluebird@^3.5.0, bluebird@^3.5.5:
   version "3.5.5"
   resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.5.5.tgz#a8d0afd73251effbbd5fe384a77d73003c17a71f"
@@ -1119,7 +1119,7 @@ bn.js@4.11.6:
   resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.11.6.tgz#53344adb14617a13f6e8dd2ce28905d1c0ba3215"
   integrity sha1-UzRK2xRhehP26N0s4okF0cC6MhU=
 
-bn.js@^4.0.0, bn.js@^4.1.0, bn.js@^4.1.1, bn.js@^4.11.6, bn.js@^4.4.0:
+bn.js@4.11.8, bn.js@^4.0.0, bn.js@^4.1.0, bn.js@^4.1.1, bn.js@^4.11.6, bn.js@^4.4.0:
   version "4.11.8"
   resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.11.8.tgz#2cde09eb5ee341f484746bb0309b3253b1b1442f"
   integrity sha512-ItfYfPLkWHUjckQCk8xC+LwxgK8NYcXywGigJgSwOP8Y2iyWT4f2vsZnoOXTTbo+o5yXmIUJ4gn5538SO5S3gA==
@@ -1346,6 +1346,19 @@ cache-base@^1.0.1:
     union-value "^1.0.0"
     unset-value "^1.0.0"
 
+cacheable-request@^6.0.0:
+  version "6.1.0"
+  resolved "https://registry.yarnpkg.com/cacheable-request/-/cacheable-request-6.1.0.tgz#20ffb8bd162ba4be11e9567d823db651052ca912"
+  integrity sha512-Oj3cAGPCqOZX7Rz64Uny2GYAZNliQSqfbePrgAQ1wKAihYmCUnraBtJtKcGR4xz7wF+LoJC+ssFZvv5BgF9Igg==
+  dependencies:
+    clone-response "^1.0.2"
+    get-stream "^5.1.0"
+    http-cache-semantics "^4.0.0"
+    keyv "^3.0.0"
+    lowercase-keys "^2.0.0"
+    normalize-url "^4.1.0"
+    responselike "^1.0.2"
+
 camelcase@^5.0.0:
   version "5.3.1"
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-5.3.1.tgz#e3c9b31569e106811df242f715725a1f4c494320"
@@ -1428,6 +1441,13 @@ cliui@^5.0.0:
     strip-ansi "^5.2.0"
     wrap-ansi "^5.1.0"
 
+clone-response@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/clone-response/-/clone-response-1.0.2.tgz#d1dc973920314df67fbeb94223b4ee350239e96b"
+  integrity sha1-0dyXOSAxTfZ/vrlCI7TuNQI56Ws=
+  dependencies:
+    mimic-response "^1.0.0"
+
 code-point-at@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/code-point-at/-/code-point-at-1.1.0.tgz#0d070b4d043a5bea33a2f1a40e2edb3d9a4ccf77"
@@ -1658,6 +1678,14 @@ cyclist@~0.2.2:
   resolved "https://registry.yarnpkg.com/cyclist/-/cyclist-0.2.2.tgz#1b33792e11e914a2fd6d6ed6447464444e5fa640"
   integrity sha1-GzN5LhHpFKL9bW7WRHRkRE5fpkA=
 
+d@1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/d/-/d-1.0.1.tgz#8698095372d58dbee346ffd0c7093f99f8f9eb5a"
+  integrity sha512-m62ShEObQ39CfralilEQRjH6oAMtNCV1xJyEx5LpRYUVN+EviphDgUc/F3hnYbADmkiNs67Y+3ylmlG7Lnu+FA==
+  dependencies:
+    es5-ext "^0.10.50"
+    type "^1.0.1"
+
 dashdash@^1.12.0:
   version "1.14.1"
   resolved "https://registry.yarnpkg.com/dashdash/-/dashdash-1.14.1.tgz#853cfa0f7cbe2fed5de20326b8dd581035f6e2f0"
@@ -1766,6 +1794,11 @@ deep-extend@^0.6.0:
   resolved "https://registry.yarnpkg.com/deep-extend/-/deep-extend-0.6.0.tgz#c4fa7c95404a17a9c3e8ca7e1537312b736330ac"
   integrity sha512-LOHxIOaPYdHlJRtCQfDIVZtfw/ufM8+rVj649RIHzcm/vGwQRXFt6OPqIFWsm2XEMrNIEtWR64sY1LEKD2vAOA==
 
+defer-to-connect@^1.0.1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/defer-to-connect/-/defer-to-connect-1.0.2.tgz#4bae758a314b034ae33902b5aac25a8dd6a8633e"
+  integrity sha512-k09hcQcTDY+cwgiwa6PYKLm3jlagNzQ+RSvhjzESOGOx+MNOuXkxTfEvPrO1IOQ81tArCFYQgi631clB70RpQw==
+
 define-properties@^1.1.2:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/define-properties/-/define-properties-1.1.3.tgz#cf88da6cbee26fe6db7094f61d870cbd84cee9f1"
@@ -1974,6 +2007,32 @@ es-to-primitive@^1.2.0:
     is-date-object "^1.0.1"
     is-symbol "^1.0.2"
 
+es5-ext@^0.10.35, es5-ext@^0.10.50, es5-ext@~0.10.14:
+  version "0.10.50"
+  resolved "https://registry.yarnpkg.com/es5-ext/-/es5-ext-0.10.50.tgz#6d0e23a0abdb27018e5ac4fd09b412bc5517a778"
+  integrity sha512-KMzZTPBkeQV/JcSQhI5/z6d9VWJ3EnQ194USTUwIYZ2ZbpN8+SGXQKt1h68EX44+qt+Fzr8DO17vnxrw7c3agw==
+  dependencies:
+    es6-iterator "~2.0.3"
+    es6-symbol "~3.1.1"
+    next-tick "^1.0.0"
+
+es6-iterator@~2.0.3:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/es6-iterator/-/es6-iterator-2.0.3.tgz#a7de889141a05a94b0854403b2d0a0fbfa98f3b7"
+  integrity sha1-p96IkUGgWpSwhUQDstCg+/qY87c=
+  dependencies:
+    d "1"
+    es5-ext "^0.10.35"
+    es6-symbol "^3.1.1"
+
+es6-symbol@^3.1.1, es6-symbol@~3.1.1:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/es6-symbol/-/es6-symbol-3.1.1.tgz#bf00ef4fdab6ba1b46ecb7b629b4c7ed5715cc77"
+  integrity sha1-vwDvT9q2uhtG7Le2KbTH7VcVzHc=
+  dependencies:
+    d "1"
+    es5-ext "~0.10.14"
+
 escape-html@~1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/escape-html/-/escape-html-1.0.3.tgz#0258eae4d3d0c0974de1c169188ef0051d1d1988"
@@ -2022,7 +2081,16 @@ eth-ens-namehash@2.0.8:
     idna-uts46-hx "^2.3.1"
     js-sha3 "^0.5.7"
 
-eth-lib@0.1.27, eth-lib@^0.1.26:
+eth-lib@0.2.7:
+  version "0.2.7"
+  resolved "https://registry.yarnpkg.com/eth-lib/-/eth-lib-0.2.7.tgz#2f93f17b1e23aec3759cd4a3fe20c1286a3fc1ca"
+  integrity sha1-L5Pxex4jrsN1nNSj/iDBKGo/wco=
+  dependencies:
+    bn.js "^4.11.6"
+    elliptic "^6.4.0"
+    xhr-request-promise "^0.1.2"
+
+eth-lib@^0.1.26:
   version "0.1.27"
   resolved "https://registry.yarnpkg.com/eth-lib/-/eth-lib-0.1.27.tgz#f0b0fd144f865d2d6bf8257a40004f2e75ca1dd6"
   integrity sha512-B8czsfkJYzn2UIEMwjc7Mbj+Cy72V+/OXH/tb44LV8jhrjizQJJ325xMOMyk3+ETa6r6oi0jsUY14+om8mQMWA==
@@ -2035,19 +2103,10 @@ eth-lib@0.1.27, eth-lib@^0.1.26:
     ws "^3.0.0"
     xhr-request-promise "^0.1.2"
 
-eth-lib@0.2.7:
-  version "0.2.7"
-  resolved "https://registry.yarnpkg.com/eth-lib/-/eth-lib-0.2.7.tgz#2f93f17b1e23aec3759cd4a3fe20c1286a3fc1ca"
-  integrity sha1-L5Pxex4jrsN1nNSj/iDBKGo/wco=
-  dependencies:
-    bn.js "^4.11.6"
-    elliptic "^6.4.0"
-    xhr-request-promise "^0.1.2"
-
-ethers@4.0.0-beta.1:
-  version "4.0.0-beta.1"
-  resolved "https://registry.yarnpkg.com/ethers/-/ethers-4.0.0-beta.1.tgz#0648268b83e0e91a961b1af971c662cdf8cbab6d"
-  integrity sha512-SoYhktEbLxf+fiux5SfCEwdzWENMvgIbMZD90I62s4GZD9nEjgEWy8ZboI3hck193Vs0bDoTohDISx84f2H2tw==
+ethers@4.0.0-beta.3:
+  version "4.0.0-beta.3"
+  resolved "https://registry.yarnpkg.com/ethers/-/ethers-4.0.0-beta.3.tgz#15bef14e57e94ecbeb7f9b39dd0a4bd435bc9066"
+  integrity sha512-YYPogooSknTwvHg3+Mv71gM/3Wcrx+ZpCzarBj3mqs9njjRkrOo2/eufzhHloOCo3JSoNI4TQJJ6yU5ABm3Uog==
   dependencies:
     "@types/node" "^10.3.2"
     aes-js "3.0.0"
@@ -2068,10 +2127,10 @@ ethjs-unit@0.1.6:
     bn.js "4.11.6"
     number-to-bn "1.7.0"
 
-eventemitter3@1.1.1:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/eventemitter3/-/eventemitter3-1.1.1.tgz#47786bdaa087caf7b1b75e73abc5c7d540158cd0"
-  integrity sha1-R3hr2qCHyvext15zq8XH1UAVjNA=
+eventemitter3@3.1.2:
+  version "3.1.2"
+  resolved "https://registry.yarnpkg.com/eventemitter3/-/eventemitter3-3.1.2.tgz#2d3d48f9c346698fce83a85d7d664e98535df6e7"
+  integrity sha512-tvtQIeLVHjDkJYnzf2dgVMxfuSGJeM/7UCG17TT4EumTfNtF+0nebF/4zWOIkCreAbtNqhGEboB6BWrwqNaw4Q==
 
 events@^3.0.0:
   version "3.0.0"
@@ -2364,13 +2423,14 @@ fs-constants@^1.0.0:
   resolved "https://registry.yarnpkg.com/fs-constants/-/fs-constants-1.0.0.tgz#6be0de9be998ce16af8afc24497b9ee9b7ccd9ad"
   integrity sha512-y6OAwoSIf7FyjMIv94u+b5rdheZEjzR63GTyZJm5qh4Bi+2YgwLCcI/fPFZkL5PSixOt6ZNKm+w+Hfp/Bciwow==
 
-fs-extra@^2.0.0, fs-extra@^2.1.2:
-  version "2.1.2"
-  resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-2.1.2.tgz#046c70163cef9aad46b0e4a7fa467fb22d71de35"
-  integrity sha1-BGxwFjzvmq1GsOSn+kZ/si1x3jU=
+fs-extra@^4.0.2:
+  version "4.0.3"
+  resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-4.0.3.tgz#0d852122e5bc5beb453fb028e9c0c9bf36340c94"
+  integrity sha512-q6rbdDd1o2mAnQreO7YADIxf/Whx4AHBiRf6d+/cVT8h44ss+lHgxf1FemcqDnQt9X3ct4McHr+JMGlYSsK7Cg==
   dependencies:
     graceful-fs "^4.1.2"
-    jsonfile "^2.1.0"
+    jsonfile "^4.0.0"
+    universalify "^0.1.0"
 
 fs-minipass@^1.2.5:
   version "1.2.6"
@@ -2379,16 +2439,6 @@ fs-minipass@^1.2.5:
   dependencies:
     minipass "^2.2.1"
 
-fs-promise@^2.0.0:
-  version "2.0.3"
-  resolved "https://registry.yarnpkg.com/fs-promise/-/fs-promise-2.0.3.tgz#f64e4f854bcf689aa8bddcba268916db3db46854"
-  integrity sha1-9k5PhUvPaJqovdy6JokW2z20aFQ=
-  dependencies:
-    any-promise "^1.3.0"
-    fs-extra "^2.0.0"
-    mz "^2.6.0"
-    thenify-all "^1.6.0"
-
 fs-readdir-recursive@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/fs-readdir-recursive/-/fs-readdir-recursive-1.1.0.tgz#e32fc030a2ccee44a6b5371308da54be0b397d27"
@@ -2417,16 +2467,6 @@ fsevents@^1.2.7:
     nan "^2.12.1"
     node-pre-gyp "^0.12.0"
 
-fstream@^1.0.12, fstream@^1.0.8:
-  version "1.0.12"
-  resolved "https://registry.yarnpkg.com/fstream/-/fstream-1.0.12.tgz#4e8ba8ee2d48be4f7d0de505455548eae5932045"
-  integrity sha512-WvJ193OHa0GHPEL+AycEJgxvBEwyfRkN1vhjca23OaPVMCaLCXTd5qAu82AjTcgP1UJmytkOKb63Ypde7raDIg==
-  dependencies:
-    graceful-fs "^4.1.2"
-    inherits "~2.0.0"
-    mkdirp ">=0.5 0"
-    rimraf "2"
-
 function-bind@^1.0.2, function-bind@^1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/function-bind/-/function-bind-1.1.1.tgz#a56899d3ea3c9bab874bb9773b7c5ede92f4895d"
@@ -2464,13 +2504,20 @@ get-stream@^3.0.0:
   resolved "https://registry.yarnpkg.com/get-stream/-/get-stream-3.0.0.tgz#8e943d1358dc37555054ecbe2edb05aa174ede14"
   integrity sha1-jpQ9E1jcN1VQVOy+LtsFqhdO3hQ=
 
-get-stream@^4.0.0:
+get-stream@^4.0.0, get-stream@^4.1.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/get-stream/-/get-stream-4.1.0.tgz#c1b255575f3dc21d59bfc79cd3d2b46b1c3a54b5"
   integrity sha512-GMat4EJ5161kIy2HevLlr4luNjBgvmj413KaQA7jt4V8B4RDsfpHk7WQ9GVqfYyyx8OS/L66Kox+rJRNklLK7w==
   dependencies:
     pump "^3.0.0"
 
+get-stream@^5.1.0:
+  version "5.1.0"
+  resolved "https://registry.yarnpkg.com/get-stream/-/get-stream-5.1.0.tgz#01203cdc92597f9b909067c3e656cc1f4d3c4dc9"
+  integrity sha512-EXr1FOzrzTfGeL0gQdeFEvOMm2mzMOglyiOXSTpPC+iAjAKftbr3jpCMWynogwYnM+eSj9sHGc6wjIcDvYiygw==
+  dependencies:
+    pump "^3.0.0"
+
 get-value@^2.0.3, get-value@^2.0.6:
   version "2.0.6"
   resolved "https://registry.yarnpkg.com/get-value/-/get-value-2.0.6.tgz#dc15ca1c672387ca76bd37ac0a395ba2042a2c28"
@@ -2552,7 +2599,24 @@ globals@^11.1.0:
   resolved "https://registry.yarnpkg.com/globals/-/globals-11.12.0.tgz#ab8795338868a0babd8525758018c2a7eb95c42e"
   integrity sha512-WOBp/EEGUiIsJSp7wcv/y6MO+lV9UoncWqxuFfm8eBwzWNgyfBd6Gz+IeKQ9jCmyhoH99g15M3T+QaVHFjizVA==
 
-got@7.1.0, got@^7.1.0:
+got@9.6.0:
+  version "9.6.0"
+  resolved "https://registry.yarnpkg.com/got/-/got-9.6.0.tgz#edf45e7d67f99545705de1f7bbeeeb121765ed85"
+  integrity sha512-R7eWptXuGYxwijs0eV+v3o6+XH1IqVK8dJOEecQfTmkncw9AV4dcw/Dhxi8MdlqPthxxpZyizMzyg8RTmEsG+Q==
+  dependencies:
+    "@sindresorhus/is" "^0.14.0"
+    "@szmarczak/http-timer" "^1.1.2"
+    cacheable-request "^6.0.0"
+    decompress-response "^3.3.0"
+    duplexer3 "^0.1.4"
+    get-stream "^4.1.0"
+    lowercase-keys "^1.0.1"
+    mimic-response "^1.0.1"
+    p-cancelable "^1.0.0"
+    to-readable-stream "^1.0.0"
+    url-parse-lax "^3.0.0"
+
+got@^7.1.0:
   version "7.1.0"
   resolved "https://registry.yarnpkg.com/got/-/got-7.1.0.tgz#05450fd84094e6bbea56f451a43a9c289166385a"
   integrity sha512-Y5WMo7xKKq1muPsxD+KmrR8DH5auG7fBdDVueZwETwV6VytKyU9OX/ddpq2/1hp1vIPvVb4T81dKQz3BivkNLw==
@@ -2712,6 +2776,11 @@ hosted-git-info@^2.1.4:
   dependencies:
     lru-cache "^5.1.1"
 
+http-cache-semantics@^4.0.0:
+  version "4.0.3"
+  resolved "https://registry.yarnpkg.com/http-cache-semantics/-/http-cache-semantics-4.0.3.tgz#495704773277eeef6e43f9ab2c2c7d259dda25c5"
+  integrity sha512-TcIMG3qeVLgDr1TEd2XvHaTnMPwYQUQMIBLy+5pLSDKYFc7UIqj39w8EGzZkaxoLv/l2K8HaI0t5AVA+YYgUew==
+
 http-errors@1.7.2, http-errors@~1.7.2:
   version "1.7.2"
   resolved "https://registry.yarnpkg.com/http-errors/-/http-errors-1.7.2.tgz#4f5029cf13239f31036e5b2e55292bcfbcc85c8f"
@@ -2799,7 +2868,7 @@ inflight@^1.0.4:
     once "^1.3.0"
     wrappy "1"
 
-inherits@2, inherits@2.0.3, inherits@^2.0.1, inherits@^2.0.3, inherits@~2.0.0, inherits@~2.0.3:
+inherits@2, inherits@2.0.3, inherits@^2.0.1, inherits@^2.0.3, inherits@~2.0.3:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.3.tgz#633c2c83e3da42a502f52466022480f4208261de"
   integrity sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=
@@ -3105,6 +3174,11 @@ jsesc@~0.5.0:
   resolved "https://registry.yarnpkg.com/jsesc/-/jsesc-0.5.0.tgz#e7dee66e35d6fc16f710fe91d5cf69f70f08911d"
   integrity sha1-597mbjXW/Bb3EP6R1c9p9w8IkR0=
 
+json-buffer@3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/json-buffer/-/json-buffer-3.0.0.tgz#5b1f397afc75d677bde8bcfc0e47e1f9a3d9a898"
+  integrity sha1-Wx85evx11ne96Lz8Dkfh+aPZqJg=
+
 json-parse-better-errors@^1.0.1, json-parse-better-errors@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/json-parse-better-errors/-/json-parse-better-errors-1.0.2.tgz#bb867cfb3450e69107c131d1c514bab3dc8bcaa9"
@@ -3144,10 +3218,10 @@ json5@^2.1.0:
   dependencies:
     minimist "^1.2.0"
 
-jsonfile@^2.1.0:
-  version "2.4.0"
-  resolved "https://registry.yarnpkg.com/jsonfile/-/jsonfile-2.4.0.tgz#3736a2b428b87bbda0cc83b53fa3d633a35c2ae8"
-  integrity sha1-NzaitCi4e72gzIO1P6PWM6NcKug=
+jsonfile@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/jsonfile/-/jsonfile-4.0.0.tgz#8771aae0799b64076b76640fca058f9c10e33ecb"
+  integrity sha1-h3Gq4HmbZAdrdmQPygWPnBDjPss=
   optionalDependencies:
     graceful-fs "^4.1.6"
 
@@ -3174,6 +3248,13 @@ keccakjs@^0.2.1:
     browserify-sha3 "^0.0.4"
     sha3 "^1.2.2"
 
+keyv@^3.0.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/keyv/-/keyv-3.1.0.tgz#ecc228486f69991e49e9476485a5be1e8fc5c4d9"
+  integrity sha512-9ykJ/46SN/9KPM/sichzQ7OvXyGDYKGTaDlKMGCAlg2UK8KRy4jb0d8sFc+0Tt0YYnThq8X2RZgCg74RPxgcVA==
+  dependencies:
+    json-buffer "3.0.0"
+
 kind-of@^3.0.2, kind-of@^3.0.3, kind-of@^3.2.0:
   version "3.2.2"
   resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-3.2.2.tgz#31ea21a734bab9bbb0f32466d893aea51e4a3c64"
@@ -3262,11 +3343,16 @@ loose-envify@^1.0.0:
   dependencies:
     js-tokens "^3.0.0 || ^4.0.0"
 
-lowercase-keys@^1.0.0:
+lowercase-keys@^1.0.0, lowercase-keys@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/lowercase-keys/-/lowercase-keys-1.0.1.tgz#6f9e30b47084d971a7c820ff15a6c5167b74c26f"
   integrity sha512-G2Lj61tXDnVFFOi8VZds+SoQjtQC3dgokKdDG2mTm1tx4m50NUHBOZSBwQQHyy0V12A0JTG4icfZQH+xPyh8VA==
 
+lowercase-keys@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/lowercase-keys/-/lowercase-keys-2.0.0.tgz#2603e78b7b4b0006cbca2fbcc8a3202558ac9479"
+  integrity sha512-tqNXrS78oMOE73NMxK4EMLQsQowWf8jKooH9g7xPavRT706R6bkQJ6DY2Te7QukaZsulxa30wQ7bk0pm4XiHmA==
+
 lru-cache@^5.1.1:
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-5.1.1.tgz#1da27e6710271947695daf6848e847f01d84b920"
@@ -3408,7 +3494,7 @@ mimic-fn@^2.0.0:
   resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-2.1.0.tgz#7ed2c2ccccaf84d3ffcb7a69b57711fc2083401b"
   integrity sha512-OqbOk5oEQeAZ8WXWydlu9HJjz9WVdEIvamMCcXmuqUYjTknH/sqsWvhQ3vgwKFRR1HpjvNBKQ37nbJgYzGqGcg==
 
-mimic-response@^1.0.0:
+mimic-response@^1.0.0, mimic-response@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/mimic-response/-/mimic-response-1.0.1.tgz#4923538878eef42063cb8a3e3b0798781487ab1b"
   integrity sha512-j5EctnkH7amfV/q5Hgmoal1g2QHFJRraOtmx0JpIqkxhBhI/lJSl1nMpQ45hVarwNETOoWEimndZ4QK0RHxuxQ==
@@ -3493,7 +3579,7 @@ mkdirp-promise@^5.0.1:
   dependencies:
     mkdirp "*"
 
-mkdirp@*, "mkdirp@>=0.5 0", mkdirp@^0.5.0, mkdirp@^0.5.1:
+mkdirp@*, mkdirp@^0.5.0, mkdirp@^0.5.1:
   version "0.5.1"
   resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.5.1.tgz#30057438eac6cf7f8c4767f38648d6697d75c903"
   integrity sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=
@@ -3505,11 +3591,6 @@ mock-fs@^4.1.0:
   resolved "https://registry.yarnpkg.com/mock-fs/-/mock-fs-4.10.0.tgz#1d017f797416c9f4879dd58ee9438d8b9323a731"
   integrity sha512-eBpLEjI6tK4RKK44BbUBQu89lrNh+5WeX3wf2U6Uwo6RtRGAQ77qvKeuuQh3lVXHF1aPndVww9VcjqmLThIdtA==
 
-mout@^0.11.0:
-  version "0.11.1"
-  resolved "https://registry.yarnpkg.com/mout/-/mout-0.11.1.tgz#ba3611df5f0e5b1ffbfd01166b8f02d1f5fa2b99"
-  integrity sha1-ujYR318OWx/7/QEWa48C0fX6K5k=
-
 move-concurrently@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/move-concurrently/-/move-concurrently-1.0.1.tgz#be2c005fda32e0b29af1f05d7c4b33214c701f92"
@@ -3537,21 +3618,12 @@ ms@^2.1.1:
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.2.tgz#d09d1f357b443f493382a8eb3ccd183872ae6009"
   integrity sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==
 
-mz@^2.6.0:
-  version "2.7.0"
-  resolved "https://registry.yarnpkg.com/mz/-/mz-2.7.0.tgz#95008057a56cafadc2bc63dde7f9ff6955948e32"
-  integrity sha512-z81GNO7nnYMEhrGh9LeymoE4+Yr0Wn5McHIZMK5cfQCl+NDX08sCZgUc9/6MHni9IWuFLm1Z3HTCXu2z9fN62Q==
-  dependencies:
-    any-promise "^1.0.0"
-    object-assign "^4.0.1"
-    thenify-all "^1.0.0"
-
 nan@2.13.2:
   version "2.13.2"
   resolved "https://registry.yarnpkg.com/nan/-/nan-2.13.2.tgz#f51dc7ae66ba7d5d55e1e6d4d8092e802c9aefe7"
   integrity sha512-TghvYc72wlMGMVMluVo9WRJc0mB8KxxF/gZ4YYFy7V2ZQX9l7rgbPg7vjS9mt6U5HXODVFVI2bOduCzwOMv/lw==
 
-nan@^2.0.8, nan@^2.12.1, nan@^2.3.3:
+nan@^2.12.1, nan@^2.14.0:
   version "2.14.0"
   resolved "https://registry.yarnpkg.com/nan/-/nan-2.14.0.tgz#7818f722027b2459a86f0295d434d1fc2336c52c"
   integrity sha512-INOFj37C7k3AfaNTtX8RhsTw7qRy7eLET14cROi9+5HAVbbHuIWUHEauBv5qT4Av2tWasiTY1Jw6puUNqRJXQg==
@@ -3597,6 +3669,11 @@ neo-async@^2.5.0, neo-async@^2.6.1:
   resolved "https://registry.yarnpkg.com/neo-async/-/neo-async-2.6.1.tgz#ac27ada66167fa8849a6addd837f6b189ad2081c"
   integrity sha512-iyam8fBuCUpWeKPGpaNMetEocMt364qkCsfL9JuhjXX6dRnguRVOfk2GZaDpPjcOKiiXCPINZC1GczQ7iTq3Zw==
 
+next-tick@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/next-tick/-/next-tick-1.0.0.tgz#ca86d1fe8828169b0120208e3dc8424b9db8342c"
+  integrity sha1-yobR/ogoFpsBICCOPchCS524NCw=
+
 nice-try@^1.0.4:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/nice-try/-/nice-try-1.0.5.tgz#a3378a7696ce7d223e88fc9b764bd7ef1089e366"
@@ -3684,6 +3761,11 @@ normalize-path@^3.0.0:
   resolved "https://registry.yarnpkg.com/normalize-path/-/normalize-path-3.0.0.tgz#0dcd69ff23a1c9b11fd0978316644a0388216a65"
   integrity sha512-6eZs5Ls3WtCisHWp9S2GUy8dqkpGi4BVSz3GaqiE6ezub0512ESztXUwUB6C6IKbQkY2Pnb/mD4WYojCRwcwLA==
 
+normalize-url@^4.1.0:
+  version "4.3.0"
+  resolved "https://registry.yarnpkg.com/normalize-url/-/normalize-url-4.3.0.tgz#9c49e10fc1876aeb76dba88bf1b2b5d9fa57b2ee"
+  integrity sha512-0NLtR71o4k6GLP+mr6Ty34c5GA6CMoEsncKJxvQd8NzPxaHRJNnb5gZE8R1XF4CPIS7QPHLJ74IFszwtNVAHVQ==
+
 npm-bundled@^1.0.1:
   version "1.0.6"
   resolved "https://registry.yarnpkg.com/npm-bundled/-/npm-bundled-1.0.6.tgz#e7ba9aadcef962bb61248f91721cd932b3fe6bdd"
@@ -3790,10 +3872,10 @@ object.pick@^1.3.0:
   dependencies:
     isobject "^3.0.1"
 
-oboe@2.1.3:
-  version "2.1.3"
-  resolved "https://registry.yarnpkg.com/oboe/-/oboe-2.1.3.tgz#2b4865dbd46be81225713f4e9bfe4bcf4f680a4f"
-  integrity sha1-K0hl29Rr6BIlcT9Om/5Lz09oCk8=
+oboe@2.1.4:
+  version "2.1.4"
+  resolved "https://registry.yarnpkg.com/oboe/-/oboe-2.1.4.tgz#20c88cdb0c15371bb04119257d4fdd34b0aa49f6"
+  integrity sha1-IMiM2wwVNxuwQRklfU/dNLCqSfY=
   dependencies:
     http-https "^1.0.0"
 
@@ -3857,6 +3939,11 @@ p-cancelable@^0.3.0:
   resolved "https://registry.yarnpkg.com/p-cancelable/-/p-cancelable-0.3.0.tgz#b9e123800bcebb7ac13a479be195b507b98d30fa"
   integrity sha512-RVbZPLso8+jFeq1MfNvgXtCRED2raz/dKpacfTNxsx6pLEpEomM7gah6VeHSYV3+vo0OAi4MkArtQcWWXuQoyw==
 
+p-cancelable@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/p-cancelable/-/p-cancelable-1.1.0.tgz#d078d15a3af409220c886f1d9a0ca2e441ab26cc"
+  integrity sha512-s73XxOZ4zpt1edZYZzvhqFa6uvQc1vwUa0K0BdtIZgQMAJj9IbebH+JkgKZc9h+B05PKHLOTl4ajG1BmNrVZlw==
+
 p-defer@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/p-defer/-/p-defer-1.0.0.tgz#9f6eb182f6c9aa8cd743004a7d4f96b196b0fb0c"
@@ -4093,6 +4180,11 @@ prepend-http@^1.0.1:
   resolved "https://registry.yarnpkg.com/prepend-http/-/prepend-http-1.0.4.tgz#d4f4562b0ce3696e41ac52d0e002e57a635dc6dc"
   integrity sha1-1PRWKwzjaW5BrFLQ4ALlemNdxtw=
 
+prepend-http@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/prepend-http/-/prepend-http-2.0.0.tgz#e92434bfa5ea8c19f41cdfd401d741a3c819d897"
+  integrity sha1-6SQ0v6XqjBn0HN/UAddBo8gZ2Jc=
+
 private@^0.1.6:
   version "0.1.8"
   resolved "https://registry.yarnpkg.com/private/-/private-0.1.8.tgz#2381edb3689f7a53d653190060fcf822d2f368ff"
@@ -4442,12 +4534,19 @@ resolve@^1.10.0, resolve@^1.3.2, resolve@^1.4.0:
   dependencies:
     path-parse "^1.0.6"
 
+responselike@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/responselike/-/responselike-1.0.2.tgz#918720ef3b631c5642be068f15ade5a46f4ba1e7"
+  integrity sha1-kYcg7ztjHFZCvgaPFa3lpG9Loec=
+  dependencies:
+    lowercase-keys "^1.0.0"
+
 ret@~0.1.10:
   version "0.1.15"
   resolved "https://registry.yarnpkg.com/ret/-/ret-0.1.15.tgz#b8a4825d5bdb1fc3f6f53c2bc33f81388681c7bc"
   integrity sha512-TTlYpa+OL+vMMNG24xSlQGEJ3B/RzEfUlLct7b5G/ytav+wPrplCpVMFuwzXbkecJrb6IYo1iFb0S9v37754mg==
 
-rimraf@2, rimraf@^2.5.4, rimraf@^2.6.1, rimraf@^2.6.2, rimraf@^2.6.3:
+rimraf@^2.5.4, rimraf@^2.6.1, rimraf@^2.6.2, rimraf@^2.6.3:
   version "2.6.3"
   resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-2.6.3.tgz#b2d104fe0d8fb27cf9e0a1cda8262dd3833c6cab"
   integrity sha512-mwqeW5XsA2qAejG46gYdENaxXjx9onRNCfn7L0duuP4hCuTIi/QO7PDK07KJfp1d+izWPrzEJDcSqBa0OZQriA==
@@ -4517,27 +4616,10 @@ scrypt-js@2.0.3:
   resolved "https://registry.yarnpkg.com/scrypt-js/-/scrypt-js-2.0.3.tgz#bb0040be03043da9a012a2cea9fc9f852cfc87d4"
   integrity sha1-uwBAvgMEPamgEqLOqfyfhSz8h9Q=
 
-scrypt.js@0.2.0:
-  version "0.2.0"
-  resolved "https://registry.yarnpkg.com/scrypt.js/-/scrypt.js-0.2.0.tgz#af8d1465b71e9990110bedfc593b9479e03a8ada"
-  integrity sha1-r40UZbcemZARC+38WTuUeeA6ito=
-  dependencies:
-    scrypt "^6.0.2"
-    scryptsy "^1.2.1"
-
-scrypt@^6.0.2:
-  version "6.0.3"
-  resolved "https://registry.yarnpkg.com/scrypt/-/scrypt-6.0.3.tgz#04e014a5682b53fa50c2d5cce167d719c06d870d"
-  integrity sha1-BOAUpWgrU/pQwtXM4WfXGcBthw0=
-  dependencies:
-    nan "^2.0.8"
-
-scryptsy@^1.2.1:
-  version "1.2.1"
-  resolved "https://registry.yarnpkg.com/scryptsy/-/scryptsy-1.2.1.tgz#a3225fa4b2524f802700761e2855bdf3b2d92163"
-  integrity sha1-oyJfpLJST4AnAHYeKFW987LZIWM=
-  dependencies:
-    pbkdf2 "^3.0.3"
+scryptsy@2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/scryptsy/-/scryptsy-2.1.0.tgz#8d1e8d0c025b58fdd25b6fa9a0dc905ee8faa790"
+  integrity sha512-1CdSqHQowJBnMAFyPEBRfqag/YP9OF394FV+4YREIJX4ljD7OxvQRDayyoyyCk+senRjSkP6VnUNQmVQqB6g7w==
 
 seek-bzip@^1.0.5:
   version "1.0.5"
@@ -4551,6 +4633,11 @@ seek-bzip@^1.0.5:
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.7.0.tgz#790a7cf6fea5459bac96110b29b60412dc8ff96b"
   integrity sha512-Ya52jSX2u7QKghxeoFGpLwCtGlt7j0oY9DYb5apt9nPlJ42ID+ulTXESnt/qAQcoSERyZ5sl3LDIOw0nAn/5DA==
 
+semver@6.2.0:
+  version "6.2.0"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-6.2.0.tgz#4d813d9590aaf8a9192693d6c85b9344de5901db"
+  integrity sha512-jdFC1VdUGT/2Scgbimf7FSx9iJLXoqfglSF+gJeuNWVpiE37OIbc1jywR/GJyFdz3mnkz2/id0L0J/cr0izR5A==
+
 semver@^6.3.0:
   version "6.3.0"
   resolved "https://registry.yarnpkg.com/semver/-/semver-6.3.0.tgz#ee0a64c8af5e8ceea67687b133761e1becbd1d3d"
@@ -4988,23 +5075,22 @@ supports-color@^5.3.0:
   dependencies:
     has-flag "^3.0.0"
 
-swarm-js@0.1.37:
-  version "0.1.37"
-  resolved "https://registry.yarnpkg.com/swarm-js/-/swarm-js-0.1.37.tgz#27d485317a340bbeec40292af783cc10acfa4663"
-  integrity sha512-G8gi5fcXP/2upwiuOShJ258sIufBVztekgobr3cVgYXObZwJ5AXLqZn52AI+/ffft29pJexF9WNdUxjlkVehoQ==
+swarm-js@0.1.39:
+  version "0.1.39"
+  resolved "https://registry.yarnpkg.com/swarm-js/-/swarm-js-0.1.39.tgz#79becb07f291d4b2a178c50fee7aa6e10342c0e8"
+  integrity sha512-QLMqL2rzF6n5s50BptyD6Oi0R1aWlJC5Y17SRIVXRj6OR1DRIPM7nepvrxxkjA1zNzFz6mUOMjfeqeDaWB7OOg==
   dependencies:
     bluebird "^3.5.0"
     buffer "^5.0.5"
     decompress "^4.0.0"
     eth-lib "^0.1.26"
-    fs-extra "^2.1.2"
-    fs-promise "^2.0.0"
+    fs-extra "^4.0.2"
     got "^7.1.0"
     mime-types "^2.1.16"
     mkdirp-promise "^5.0.1"
     mock-fs "^4.1.0"
     setimmediate "^1.0.5"
-    tar.gz "^1.0.5"
+    tar "^4.0.2"
     xhr-request-promise "^0.1.2"
 
 tapable@^1.0.0, tapable@^1.1.3:
@@ -5025,27 +5111,7 @@ tar-stream@^1.5.2:
     to-buffer "^1.1.1"
     xtend "^4.0.0"
 
-tar.gz@^1.0.5:
-  version "1.0.7"
-  resolved "https://registry.yarnpkg.com/tar.gz/-/tar.gz-1.0.7.tgz#577ef2c595faaa73452ef0415fed41113212257b"
-  integrity sha512-uhGatJvds/3diZrETqMj4RxBR779LKlIE74SsMcn5JProZsfs9j0QBwWO1RW+IWNJxS2x8Zzra1+AW6OQHWphg==
-  dependencies:
-    bluebird "^2.9.34"
-    commander "^2.8.1"
-    fstream "^1.0.8"
-    mout "^0.11.0"
-    tar "^2.1.1"
-
-tar@^2.1.1:
-  version "2.2.2"
-  resolved "https://registry.yarnpkg.com/tar/-/tar-2.2.2.tgz#0ca8848562c7299b8b446ff6a4d60cdbb23edc40"
-  integrity sha512-FCEhQ/4rE1zYv9rYXJw/msRqsnmlje5jHP6huWeBZ704jUTy02c5AZyWujpMR1ax6mVw9NyJMfuK2CMDWVIfgA==
-  dependencies:
-    block-stream "*"
-    fstream "^1.0.12"
-    inherits "2"
-
-tar@^4:
+tar@^4, tar@^4.0.2:
   version "4.4.10"
   resolved "https://registry.yarnpkg.com/tar/-/tar-4.4.10.tgz#946b2810b9a5e0b26140cf78bea6b0b0d689eba1"
   integrity sha512-g2SVs5QIxvo6OLp0GudTqEf05maawKUxXru104iaayWA09551tFCTI8f1Asb4lPfkBr91k07iL4c11XO3/b0tA==
@@ -5082,20 +5148,6 @@ terser@^4.1.2:
     source-map "~0.6.1"
     source-map-support "~0.5.12"
 
-thenify-all@^1.0.0, thenify-all@^1.6.0:
-  version "1.6.0"
-  resolved "https://registry.yarnpkg.com/thenify-all/-/thenify-all-1.6.0.tgz#1a1918d402d8fc3f98fbf234db0bcc8cc10e9726"
-  integrity sha1-GhkY1ALY/D+Y+/I02wvMjMEOlyY=
-  dependencies:
-    thenify ">= 3.1.0 < 4"
-
-"thenify@>= 3.1.0 < 4":
-  version "3.3.0"
-  resolved "https://registry.yarnpkg.com/thenify/-/thenify-3.3.0.tgz#e69e38a1babe969b0108207978b9f62b88604839"
-  integrity sha1-5p44obq+lpsBCCB5eLn2K4hgSDk=
-  dependencies:
-    any-promise "^1.0.0"
-
 through2@^2.0.0:
   version "2.0.5"
   resolved "https://registry.yarnpkg.com/through2/-/through2-2.0.5.tgz#01c1e39eb31d07cb7d03a96a70823260b23132cd"
@@ -5143,6 +5195,11 @@ to-object-path@^0.3.0:
   dependencies:
     kind-of "^3.0.2"
 
+to-readable-stream@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/to-readable-stream/-/to-readable-stream-1.0.0.tgz#ce0aa0c2f3df6adf852efb404a783e77c0475771"
+  integrity sha512-Iq25XBt6zD5npPhlLVXGFN3/gyR2/qODcKNNyTMd4vbm39HUaOiAM4PMq0eMVC/Tkxz+Zjdsc55g9yyz+Yq00Q==
+
 to-regex-range@^2.1.0:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/to-regex-range/-/to-regex-range-2.1.1.tgz#7c80c17b9dfebe599e27367e0d4dd5590141db38"
@@ -5209,7 +5266,12 @@ type-is@~1.6.17, type-is@~1.6.18:
     media-typer "0.3.0"
     mime-types "~2.1.24"
 
-typedarray-to-buffer@^3.1.2:
+type@^1.0.1:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/type/-/type-1.0.3.tgz#16f5d39f27a2d28d86e48f8981859e9d3296c179"
+  integrity sha512-51IMtNfVcee8+9GJvj0spSuFcZHe9vSib6Xtgsny1Km9ugyz2mbS08I3rsUIRYgJohFRFU1160sgRodYz378Hg==
+
+typedarray-to-buffer@^3.1.5:
   version "3.1.5"
   resolved "https://registry.yarnpkg.com/typedarray-to-buffer/-/typedarray-to-buffer-3.1.5.tgz#a97ee7a9ff42691b9f783ff1bc5112fe3fca9080"
   integrity sha512-zdu8XMNEDepKKR+XYOXAVPtWui0ly0NtohUscw+UmaHiAWT8hrV1rr//H6V+0DvJ3OQ19S979M0laLfX8rm82Q==
@@ -5234,10 +5296,10 @@ unbzip2-stream@^1.0.9:
     buffer "^5.2.1"
     through "^2.3.8"
 
-underscore@1.8.3:
-  version "1.8.3"
-  resolved "https://registry.yarnpkg.com/underscore/-/underscore-1.8.3.tgz#4f3fb53b106e6097fcf9cb4109f2a5e9bdfa5022"
-  integrity sha1-Tz+1OxBuYJf8+ctBCfKl6b36UCI=
+underscore@1.9.1:
+  version "1.9.1"
+  resolved "https://registry.yarnpkg.com/underscore/-/underscore-1.9.1.tgz#06dce34a0e68a7babc29b365b8e74b8925203961"
+  integrity sha512-5/4etnCkd9c8gwgowi5/om/mYO5ajCaOgdzj/oW+0eQV9WxKBDZw5+ycmKmeaTXjInS/W0BzpGLo2xR2aBwZdg==
 
 unicode-canonical-property-names-ecmascript@^1.0.4:
   version "1.0.4"
@@ -5286,6 +5348,11 @@ unique-slug@^2.0.0:
   dependencies:
     imurmurhash "^0.1.4"
 
+universalify@^0.1.0:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/universalify/-/universalify-0.1.2.tgz#b646f69be3942dabcecc9d6639c80dc105efaa66"
+  integrity sha512-rBJeI5CXAlmy1pV+617WB9J63U6XcazHHF2f2dbJix4XzpUF0RS3Zbj0FGIOCAva5P/d/GBOYaACQ1w+0azUkg==
+
 unpipe@1.0.0, unpipe@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/unpipe/-/unpipe-1.0.0.tgz#b2bf4ee8514aae6165b4817829d21b2ef49904ec"
@@ -5323,6 +5390,13 @@ url-parse-lax@^1.0.0:
   dependencies:
     prepend-http "^1.0.1"
 
+url-parse-lax@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/url-parse-lax/-/url-parse-lax-3.0.0.tgz#16b5cafc07dbe3676c1b1999177823d6503acb0c"
+  integrity sha1-FrXK/Afb42dsGxmZF3gj1lA6yww=
+  dependencies:
+    prepend-http "^2.0.0"
+
 url-set-query@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/url-set-query/-/url-set-query-1.0.0.tgz#016e8cfd7c20ee05cafe7795e892bd0702faa339"
@@ -5346,10 +5420,10 @@ use@^3.1.0:
   resolved "https://registry.yarnpkg.com/use/-/use-3.1.1.tgz#d50c8cac79a19fbc20f2911f56eb973f4e10070f"
   integrity sha512-cwESVXlO3url9YWlFW/TA9cshCEhtu7IKJ/p5soJ/gGpj7vbvFrAY/eIioQ6Dw23KjZhYgiIo8HOs1nQ2vr/oQ==
 
-utf8@2.1.1:
-  version "2.1.1"
-  resolved "https://registry.yarnpkg.com/utf8/-/utf8-2.1.1.tgz#2e01db02f7d8d0944f77104f1609eb0c304cf768"
-  integrity sha1-LgHbAvfY0JRPdxBPFgnrDDBM92g=
+utf8@3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/utf8/-/utf8-3.0.0.tgz#f052eed1364d696e769ef058b183df88c87f69d1"
+  integrity sha512-E8VjFIQ/TyQgp+TZfS6l8yp/xWppSAHzidGiRrqe4bK4XP9pTRyKFgGJpO3SN7zdX4DeomTrwaseCHovfpFcqQ==
 
 util-deprecate@~1.0.1:
   version "1.0.2"
@@ -5380,7 +5454,7 @@ uuid@2.0.1:
   resolved "https://registry.yarnpkg.com/uuid/-/uuid-2.0.1.tgz#c2a30dedb3e535d72ccf82e343941a50ba8533ac"
   integrity sha1-wqMN7bPlNdcsz4LjQ5QaULqFM6w=
 
-uuid@^3.3.2:
+uuid@3.3.2, uuid@^3.3.2:
   version "3.3.2"
   resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.3.2.tgz#1b4af4955eb3077c501c23872fc6513811587131"
   integrity sha512-yXJmeNaw3DnnKAOKJE51sL/ZaYfWJRl1pK9dr19YFCu0ObS231AB1/LbqTKRAQ5kw8A90rA6fr4riOUpTZvQZA==
@@ -5426,234 +5500,235 @@ watchpack@^1.6.0:
     graceful-fs "^4.1.2"
     neo-async "^2.5.0"
 
-web3-bzz@1.0.0-beta.37:
-  version "1.0.0-beta.37"
-  resolved "https://registry.yarnpkg.com/web3-bzz/-/web3-bzz-1.0.0-beta.37.tgz#59e3e4f5a9d732731008fe9165c3ec8bf85d502f"
-  integrity sha512-E+dho49Nsm/QpQvYWOF35YDsQrMvLB19AApENxhlQsu6HpWQt534DQul0t3Y/aAh8rlKD6Kanxt8LhHDG3vejQ==
+web3-bzz@1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/web3-bzz/-/web3-bzz-1.2.1.tgz#c3bd1e8f0c02a13cd6d4e3c3e9e1713f144f6f0d"
+  integrity sha512-LdOO44TuYbGIPfL4ilkuS89GQovxUpmLz6C1UC7VYVVRILeZS740FVB3j9V4P4FHUk1RenaDfKhcntqgVCHtjw==
   dependencies:
-    got "7.1.0"
-    swarm-js "0.1.37"
-    underscore "1.8.3"
+    got "9.6.0"
+    swarm-js "0.1.39"
+    underscore "1.9.1"
 
-web3-core-helpers@1.0.0-beta.37:
-  version "1.0.0-beta.37"
-  resolved "https://registry.yarnpkg.com/web3-core-helpers/-/web3-core-helpers-1.0.0-beta.37.tgz#04ec354b7f5c57234c309eea2bda9bf1f2fe68ba"
-  integrity sha512-efaLOzN28RMnbugnyelgLwPWWaSwElQzcAJ/x3PZu+uPloM/lE5x0YuBKvIh7/PoSMlHqtRWj1B8CpuQOUQ5Ew==
+web3-core-helpers@1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/web3-core-helpers/-/web3-core-helpers-1.2.1.tgz#f5f32d71c60a4a3bd14786118e633ce7ca6d5d0d"
+  integrity sha512-Gx3sTEajD5r96bJgfuW377PZVFmXIH4TdqDhgGwd2lZQCcMi+DA4TgxJNJGxn0R3aUVzyyE76j4LBrh412mXrw==
   dependencies:
-    underscore "1.8.3"
-    web3-eth-iban "1.0.0-beta.37"
-    web3-utils "1.0.0-beta.37"
+    underscore "1.9.1"
+    web3-eth-iban "1.2.1"
+    web3-utils "1.2.1"
 
-web3-core-method@1.0.0-beta.37:
-  version "1.0.0-beta.37"
-  resolved "https://registry.yarnpkg.com/web3-core-method/-/web3-core-method-1.0.0-beta.37.tgz#53d148e63f818b23461b26307afdfbdaa9457744"
-  integrity sha512-pKWFUeqnVmzx3VrZg+CseSdrl/Yrk2ioid/HzolNXZE6zdoITZL0uRjnsbqXGEzgRRd1Oe/pFndpTlRsnxXloA==
+web3-core-method@1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/web3-core-method/-/web3-core-method-1.2.1.tgz#9df1bafa2cd8be9d9937e01c6a47fc768d15d90a"
+  integrity sha512-Ghg2WS23qi6Xj8Od3VCzaImLHseEA7/usvnOItluiIc5cKs00WYWsNy2YRStzU9a2+z8lwQywPYp0nTzR/QXdQ==
   dependencies:
-    underscore "1.8.3"
-    web3-core-helpers "1.0.0-beta.37"
-    web3-core-promievent "1.0.0-beta.37"
-    web3-core-subscriptions "1.0.0-beta.37"
-    web3-utils "1.0.0-beta.37"
+    underscore "1.9.1"
+    web3-core-helpers "1.2.1"
+    web3-core-promievent "1.2.1"
+    web3-core-subscriptions "1.2.1"
+    web3-utils "1.2.1"
 
-web3-core-promievent@1.0.0-beta.37:
-  version "1.0.0-beta.37"
-  resolved "https://registry.yarnpkg.com/web3-core-promievent/-/web3-core-promievent-1.0.0-beta.37.tgz#4e51c469d0a7ac0a969885a4dbcde8504abe5b02"
-  integrity sha512-GTF2r1lP8nJBeA5Gxq5yZpJy9l8Fb9CXGZPfF8jHvaRdQHtm2Z+NDhqYmF833lcdkokRSyfPcXlz1mlWeClFpg==
+web3-core-promievent@1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/web3-core-promievent/-/web3-core-promievent-1.2.1.tgz#003e8a3eb82fb27b6164a6d5b9cad04acf733838"
+  integrity sha512-IVUqgpIKoeOYblwpex4Hye6npM0aMR+kU49VP06secPeN0rHMyhGF0ZGveWBrGvf8WDPI7jhqPBFIC6Jf3Q3zw==
   dependencies:
     any-promise "1.3.0"
-    eventemitter3 "1.1.1"
+    eventemitter3 "3.1.2"
 
-web3-core-requestmanager@1.0.0-beta.37:
-  version "1.0.0-beta.37"
-  resolved "https://registry.yarnpkg.com/web3-core-requestmanager/-/web3-core-requestmanager-1.0.0-beta.37.tgz#721a75df5920621bff42d9d74f7a64413675d56b"
-  integrity sha512-66VUqye5BGp1Zz1r8psCxdNH+GtTjaFwroum2Osx+wbC5oRjAiXkkadiitf6wRb+edodjEMPn49u7B6WGNuewQ==
+web3-core-requestmanager@1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/web3-core-requestmanager/-/web3-core-requestmanager-1.2.1.tgz#fa2e2206c3d738db38db7c8fe9c107006f5c6e3d"
+  integrity sha512-xfknTC69RfYmLKC+83Jz73IC3/sS2ZLhGtX33D4Q5nQ8yc39ElyAolxr9sJQS8kihOcM6u4J+8gyGMqsLcpIBg==
   dependencies:
-    underscore "1.8.3"
-    web3-core-helpers "1.0.0-beta.37"
-    web3-providers-http "1.0.0-beta.37"
-    web3-providers-ipc "1.0.0-beta.37"
-    web3-providers-ws "1.0.0-beta.37"
+    underscore "1.9.1"
+    web3-core-helpers "1.2.1"
+    web3-providers-http "1.2.1"
+    web3-providers-ipc "1.2.1"
+    web3-providers-ws "1.2.1"
 
-web3-core-subscriptions@1.0.0-beta.37:
-  version "1.0.0-beta.37"
-  resolved "https://registry.yarnpkg.com/web3-core-subscriptions/-/web3-core-subscriptions-1.0.0-beta.37.tgz#40de5e2490cc05b15faa8f935c97fd48d670cd9a"
-  integrity sha512-FdXl8so9kwkRRWziuCSpFsAuAdg9KvpXa1fQlT16uoGcYYfxwFO/nkwyBGQzkZt7emShI2IRugcazyPCZDwkOA==
+web3-core-subscriptions@1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/web3-core-subscriptions/-/web3-core-subscriptions-1.2.1.tgz#8c2368a839d4eec1c01a4b5650bbeb82d0e4a099"
+  integrity sha512-nmOwe3NsB8V8UFsY1r+sW6KjdOS68h8nuh7NzlWxBQT/19QSUGiERRTaZXWu5BYvo1EoZRMxCKyCQpSSXLc08g==
   dependencies:
-    eventemitter3 "1.1.1"
-    underscore "1.8.3"
-    web3-core-helpers "1.0.0-beta.37"
+    eventemitter3 "3.1.2"
+    underscore "1.9.1"
+    web3-core-helpers "1.2.1"
 
-web3-core@1.0.0-beta.37:
-  version "1.0.0-beta.37"
-  resolved "https://registry.yarnpkg.com/web3-core/-/web3-core-1.0.0-beta.37.tgz#66c2c7000772c9db36d737ada31607ace09b7e90"
-  integrity sha512-cIwEqCj7OJyefQNauI0HOgW4sSaOQ98V99H2/HEIlnCZylsDzfw7gtQUdwnRFiIyIxjbWy3iWsjwDPoXNPZBYg==
+web3-core@1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/web3-core/-/web3-core-1.2.1.tgz#7278b58fb6495065e73a77efbbce781a7fddf1a9"
+  integrity sha512-5ODwIqgl8oIg/0+Ai4jsLxkKFWJYE0uLuE1yUKHNVCL4zL6n3rFjRMpKPokd6id6nJCNgeA64KdWQ4XfpnjdMg==
   dependencies:
-    web3-core-helpers "1.0.0-beta.37"
-    web3-core-method "1.0.0-beta.37"
-    web3-core-requestmanager "1.0.0-beta.37"
-    web3-utils "1.0.0-beta.37"
+    web3-core-helpers "1.2.1"
+    web3-core-method "1.2.1"
+    web3-core-requestmanager "1.2.1"
+    web3-utils "1.2.1"
 
-web3-eth-abi@1.0.0-beta.37:
-  version "1.0.0-beta.37"
-  resolved "https://registry.yarnpkg.com/web3-eth-abi/-/web3-eth-abi-1.0.0-beta.37.tgz#55592fa9cd2427d9f0441d78f3b8d0c1359a2a24"
-  integrity sha512-g9DKZGM2OqwKp/tX3W/yihcj7mQCtJ6CXyZXEIZfuDyRBED/iSEIFfieDOd+yo16sokLMig6FG7ADhhu+19hdA==
+web3-eth-abi@1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/web3-eth-abi/-/web3-eth-abi-1.2.1.tgz#9b915b1c9ebf82f70cca631147035d5419064689"
+  integrity sha512-jI/KhU2a/DQPZXHjo2GW0myEljzfiKOn+h1qxK1+Y9OQfTcBMxrQJyH5AP89O6l6NZ1QvNdq99ThAxBFoy5L+g==
   dependencies:
-    ethers "4.0.0-beta.1"
-    underscore "1.8.3"
-    web3-utils "1.0.0-beta.37"
+    ethers "4.0.0-beta.3"
+    underscore "1.9.1"
+    web3-utils "1.2.1"
 
-web3-eth-accounts@1.0.0-beta.37:
-  version "1.0.0-beta.37"
-  resolved "https://registry.yarnpkg.com/web3-eth-accounts/-/web3-eth-accounts-1.0.0-beta.37.tgz#0a5a9f14a6c3bd285e001c15eb3bb38ffa4b5204"
-  integrity sha512-uvbHL62/zwo4GDmwKdqH9c/EgYd8QVnAfpVw8D3epSISpgbONNY7Hr4MRMSd/CqAP12l2Ls9JVQGLhhC83bW6g==
+web3-eth-accounts@1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/web3-eth-accounts/-/web3-eth-accounts-1.2.1.tgz#2741a8ef337a7219d57959ac8bd118b9d68d63cf"
+  integrity sha512-26I4qq42STQ8IeKUyur3MdQ1NzrzCqPsmzqpux0j6X/XBD7EjZ+Cs0lhGNkSKH5dI3V8CJasnQ5T1mNKeWB7nQ==
   dependencies:
     any-promise "1.3.0"
     crypto-browserify "3.12.0"
     eth-lib "0.2.7"
-    scrypt.js "0.2.0"
-    underscore "1.8.3"
-    uuid "2.0.1"
-    web3-core "1.0.0-beta.37"
-    web3-core-helpers "1.0.0-beta.37"
-    web3-core-method "1.0.0-beta.37"
-    web3-utils "1.0.0-beta.37"
+    scryptsy "2.1.0"
+    semver "6.2.0"
+    underscore "1.9.1"
+    uuid "3.3.2"
+    web3-core "1.2.1"
+    web3-core-helpers "1.2.1"
+    web3-core-method "1.2.1"
+    web3-utils "1.2.1"
 
-web3-eth-contract@1.0.0-beta.37:
-  version "1.0.0-beta.37"
-  resolved "https://registry.yarnpkg.com/web3-eth-contract/-/web3-eth-contract-1.0.0-beta.37.tgz#87f93c95ed16f320ba54943b7886890de6766013"
-  integrity sha512-h1B3A8Z/C7BlnTCHkrWbXZQTViDxfR12lKMeTkT8Sqj5phFmxrBlPE4ORy4lf1Dk5b23mZYE0r/IRACx4ThCrQ==
+web3-eth-contract@1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/web3-eth-contract/-/web3-eth-contract-1.2.1.tgz#3542424f3d341386fd9ff65e78060b85ac0ea8c4"
+  integrity sha512-kYFESbQ3boC9bl2rYVghj7O8UKMiuKaiMkxvRH5cEDHil8V7MGEGZNH0slSdoyeftZVlaWSMqkRP/chfnKND0g==
   dependencies:
-    underscore "1.8.3"
-    web3-core "1.0.0-beta.37"
-    web3-core-helpers "1.0.0-beta.37"
-    web3-core-method "1.0.0-beta.37"
-    web3-core-promievent "1.0.0-beta.37"
-    web3-core-subscriptions "1.0.0-beta.37"
-    web3-eth-abi "1.0.0-beta.37"
-    web3-utils "1.0.0-beta.37"
+    underscore "1.9.1"
+    web3-core "1.2.1"
+    web3-core-helpers "1.2.1"
+    web3-core-method "1.2.1"
+    web3-core-promievent "1.2.1"
+    web3-core-subscriptions "1.2.1"
+    web3-eth-abi "1.2.1"
+    web3-utils "1.2.1"
 
-web3-eth-ens@1.0.0-beta.37:
-  version "1.0.0-beta.37"
-  resolved "https://registry.yarnpkg.com/web3-eth-ens/-/web3-eth-ens-1.0.0-beta.37.tgz#714ecb01eb447ee3eb39b2b20a10ae96edb1f01f"
-  integrity sha512-dR3UkrVzdRrJhfP57xBPx0CMiVnCcYFvh+u2XMkGydrhHgupSUkjqGr89xry/j1T0BkuN9mikpbyhdCVMXqMbg==
+web3-eth-ens@1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/web3-eth-ens/-/web3-eth-ens-1.2.1.tgz#a0e52eee68c42a8b9865ceb04e5fb022c2d971d5"
+  integrity sha512-lhP1kFhqZr2nnbu3CGIFFrAnNxk2veXpOXBY48Tub37RtobDyHijHgrj+xTh+mFiPokyrapVjpFsbGa+Xzye4Q==
   dependencies:
     eth-ens-namehash "2.0.8"
-    underscore "1.8.3"
-    web3-core "1.0.0-beta.37"
-    web3-core-helpers "1.0.0-beta.37"
-    web3-core-promievent "1.0.0-beta.37"
-    web3-eth-abi "1.0.0-beta.37"
-    web3-eth-contract "1.0.0-beta.37"
-    web3-utils "1.0.0-beta.37"
+    underscore "1.9.1"
+    web3-core "1.2.1"
+    web3-core-helpers "1.2.1"
+    web3-core-promievent "1.2.1"
+    web3-eth-abi "1.2.1"
+    web3-eth-contract "1.2.1"
+    web3-utils "1.2.1"
 
-web3-eth-iban@1.0.0-beta.37:
-  version "1.0.0-beta.37"
-  resolved "https://registry.yarnpkg.com/web3-eth-iban/-/web3-eth-iban-1.0.0-beta.37.tgz#313a3f18ae2ab00ba98678ea1156b09ef32a3655"
-  integrity sha512-WQRniGJFxH/XCbd7miO6+jnUG+6bvuzfeufPIiOtCbeIC1ypp1kSqER8YVBDrTyinU1xnf1U5v0KBZ2yiWBJxQ==
+web3-eth-iban@1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/web3-eth-iban/-/web3-eth-iban-1.2.1.tgz#2c3801718946bea24e9296993a975c80b5acf880"
+  integrity sha512-9gkr4QPl1jCU+wkgmZ8EwODVO3ovVj6d6JKMos52ggdT2YCmlfvFVF6wlGLwi0VvNa/p+0BjJzaqxnnG/JewjQ==
   dependencies:
-    bn.js "4.11.6"
-    web3-utils "1.0.0-beta.37"
+    bn.js "4.11.8"
+    web3-utils "1.2.1"
 
-web3-eth-personal@1.0.0-beta.37:
-  version "1.0.0-beta.37"
-  resolved "https://registry.yarnpkg.com/web3-eth-personal/-/web3-eth-personal-1.0.0-beta.37.tgz#187472f51861e2b6d45da43411801bc91a859f9a"
-  integrity sha512-B4dZpGbD+nGnn48i6nJBqrQ+HB7oDmd+Q3wGRKOsHSK5HRWO/KwYeA7wgwamMAElkut50lIsT9EJl4Apfk3G5Q==
+web3-eth-personal@1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/web3-eth-personal/-/web3-eth-personal-1.2.1.tgz#244e9911b7b482dc17c02f23a061a627c6e47faf"
+  integrity sha512-RNDVSiaSoY4aIp8+Hc7z+X72H7lMb3fmAChuSBADoEc7DsJrY/d0R5qQDK9g9t2BO8oxgLrLNyBP/9ub2Hc6Bg==
   dependencies:
-    web3-core "1.0.0-beta.37"
-    web3-core-helpers "1.0.0-beta.37"
-    web3-core-method "1.0.0-beta.37"
-    web3-net "1.0.0-beta.37"
-    web3-utils "1.0.0-beta.37"
+    web3-core "1.2.1"
+    web3-core-helpers "1.2.1"
+    web3-core-method "1.2.1"
+    web3-net "1.2.1"
+    web3-utils "1.2.1"
 
-web3-eth@1.0.0-beta.37:
-  version "1.0.0-beta.37"
-  resolved "https://registry.yarnpkg.com/web3-eth/-/web3-eth-1.0.0-beta.37.tgz#0e8ffcd857a5f85ae4b5f052ad831ca5c56f4f74"
-  integrity sha512-Eb3aGtkz3G9q+Z9DKgSQNbn/u8RtcZQQ0R4sW9hy5KK47GoT6vab5c6DiD3QWzI0BzitHzR5Ji+3VHf/hPUGgw==
+web3-eth@1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/web3-eth/-/web3-eth-1.2.1.tgz#b9989e2557c73a9e8ffdc107c6dafbe72c79c1b0"
+  integrity sha512-/2xly4Yry5FW1i+uygPjhfvgUP/MS/Dk+PDqmzp5M88tS86A+j8BzKc23GrlA8sgGs0645cpZK/999LpEF5UdA==
   dependencies:
-    underscore "1.8.3"
-    web3-core "1.0.0-beta.37"
-    web3-core-helpers "1.0.0-beta.37"
-    web3-core-method "1.0.0-beta.37"
-    web3-core-subscriptions "1.0.0-beta.37"
-    web3-eth-abi "1.0.0-beta.37"
-    web3-eth-accounts "1.0.0-beta.37"
-    web3-eth-contract "1.0.0-beta.37"
-    web3-eth-ens "1.0.0-beta.37"
-    web3-eth-iban "1.0.0-beta.37"
-    web3-eth-personal "1.0.0-beta.37"
-    web3-net "1.0.0-beta.37"
-    web3-utils "1.0.0-beta.37"
+    underscore "1.9.1"
+    web3-core "1.2.1"
+    web3-core-helpers "1.2.1"
+    web3-core-method "1.2.1"
+    web3-core-subscriptions "1.2.1"
+    web3-eth-abi "1.2.1"
+    web3-eth-accounts "1.2.1"
+    web3-eth-contract "1.2.1"
+    web3-eth-ens "1.2.1"
+    web3-eth-iban "1.2.1"
+    web3-eth-personal "1.2.1"
+    web3-net "1.2.1"
+    web3-utils "1.2.1"
 
-web3-net@1.0.0-beta.37:
-  version "1.0.0-beta.37"
-  resolved "https://registry.yarnpkg.com/web3-net/-/web3-net-1.0.0-beta.37.tgz#b494136043f3c6ba84fe4a47d4c028c2a63c9a8e"
-  integrity sha512-xG/uBtMdDa1UMXw9KjDUgf3fXA/fDEJUYUS0TDn+U9PMgngA+UVECHNNvQTrVVDxEky38V3sahwIDiopNsQdsw==
+web3-net@1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/web3-net/-/web3-net-1.2.1.tgz#edd249503315dd5ab4fa00220f6509d95bb7ab10"
+  integrity sha512-Yt1Bs7WgnLESPe0rri/ZoPWzSy55ovioaP35w1KZydrNtQ5Yq4WcrAdhBzcOW7vAkIwrsLQsvA+hrOCy7mNauw==
   dependencies:
-    web3-core "1.0.0-beta.37"
-    web3-core-method "1.0.0-beta.37"
-    web3-utils "1.0.0-beta.37"
+    web3-core "1.2.1"
+    web3-core-method "1.2.1"
+    web3-utils "1.2.1"
 
-web3-providers-http@1.0.0-beta.37:
-  version "1.0.0-beta.37"
-  resolved "https://registry.yarnpkg.com/web3-providers-http/-/web3-providers-http-1.0.0-beta.37.tgz#c06efd60e16e329e25bd268d2eefc68d82d13651"
-  integrity sha512-FM/1YDB1jtZuTo78habFj7S9tNHoqt0UipdyoQV29b8LkGKZV9Vs3is8L24hzuj1j/tbwkcAH+ewIseHwu0DTg==
+web3-providers-http@1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/web3-providers-http/-/web3-providers-http-1.2.1.tgz#c93ea003a42e7b894556f7e19dd3540f947f5013"
+  integrity sha512-BDtVUVolT9b3CAzeGVA/np1hhn7RPUZ6YYGB/sYky+GjeO311Yoq8SRDUSezU92x8yImSC2B+SMReGhd1zL+bQ==
   dependencies:
-    web3-core-helpers "1.0.0-beta.37"
+    web3-core-helpers "1.2.1"
     xhr2-cookies "1.1.0"
 
-web3-providers-ipc@1.0.0-beta.37:
-  version "1.0.0-beta.37"
-  resolved "https://registry.yarnpkg.com/web3-providers-ipc/-/web3-providers-ipc-1.0.0-beta.37.tgz#55d247e7197257ca0c3e4f4b0fe1561311b9d5b9"
-  integrity sha512-NdRPRxYMIU0C3u18NI8u4bwbhI9pCg5nRgDGYcmSAx5uOBxiYcQy+hb0WkJRRhBoyIXJmy+s26FoH8904+UnPg==
+web3-providers-ipc@1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/web3-providers-ipc/-/web3-providers-ipc-1.2.1.tgz#017bfc687a8fc5398df2241eb98f135e3edd672c"
+  integrity sha512-oPEuOCwxVx8L4CPD0TUdnlOUZwGBSRKScCz/Ws2YHdr9Ium+whm+0NLmOZjkjQp5wovQbyBzNa6zJz1noFRvFA==
   dependencies:
-    oboe "2.1.3"
-    underscore "1.8.3"
-    web3-core-helpers "1.0.0-beta.37"
+    oboe "2.1.4"
+    underscore "1.9.1"
+    web3-core-helpers "1.2.1"
 
-web3-providers-ws@1.0.0-beta.37:
-  version "1.0.0-beta.37"
-  resolved "https://registry.yarnpkg.com/web3-providers-ws/-/web3-providers-ws-1.0.0-beta.37.tgz#77c15aebc00b75d760d22d063ac2e415bdbef72f"
-  integrity sha512-8p6ZLv+1JYa5Vs8oBn33Nn3VGFBbF+wVfO+b78RJS1Qf1uIOzjFVDk3XwYDD7rlz9G5BKpxhaQw+6EGQ7L02aw==
+web3-providers-ws@1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/web3-providers-ws/-/web3-providers-ws-1.2.1.tgz#2d941eaf3d5a8caa3214eff8dc16d96252b842cb"
+  integrity sha512-oqsQXzu+ejJACVHy864WwIyw+oB21nw/pI65/sD95Zi98+/HQzFfNcIFneF1NC4bVF3VNX4YHTNq2I2o97LAiA==
   dependencies:
-    underscore "1.8.3"
-    web3-core-helpers "1.0.0-beta.37"
-    websocket "git://github.com/frozeman/WebSocket-Node.git#browserifyCompatible"
+    underscore "1.9.1"
+    web3-core-helpers "1.2.1"
+    websocket "github:web3-js/WebSocket-Node#polyfill/globalThis"
 
-web3-shh@1.0.0-beta.37:
-  version "1.0.0-beta.37"
-  resolved "https://registry.yarnpkg.com/web3-shh/-/web3-shh-1.0.0-beta.37.tgz#3246ce5229601b525020828a56ee283307057105"
-  integrity sha512-h5STG/xqZNQWtCLYOu7NiMqwqPea8SfkKQUPUFxXKIPVCFVKpHuQEwW1qcPQRJMLhlQIv17xuoUe1A+RzDNbrw==
+web3-shh@1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/web3-shh/-/web3-shh-1.2.1.tgz#4460e3c1e07faf73ddec24ccd00da46f89152b0c"
+  integrity sha512-/3Cl04nza5kuFn25bV3FJWa0s3Vafr5BlT933h26xovQ6HIIz61LmvNQlvX1AhFL+SNJOTcQmK1SM59vcyC8bA==
   dependencies:
-    web3-core "1.0.0-beta.37"
-    web3-core-method "1.0.0-beta.37"
-    web3-core-subscriptions "1.0.0-beta.37"
-    web3-net "1.0.0-beta.37"
+    web3-core "1.2.1"
+    web3-core-method "1.2.1"
+    web3-core-subscriptions "1.2.1"
+    web3-net "1.2.1"
 
-web3-utils@1.0.0-beta.37:
-  version "1.0.0-beta.37"
-  resolved "https://registry.yarnpkg.com/web3-utils/-/web3-utils-1.0.0-beta.37.tgz#ab868a90fe5e649337e38bdaf72133fcbf4d414d"
-  integrity sha512-kA1fyhO8nKgU21wi30oJQ/ssvu+9srMdjOTKbHYbQe4ATPcr5YNwwrxG3Bcpbu1bEwRUVKHCkqi+wTvcAWBdlQ==
+web3-utils@1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/web3-utils/-/web3-utils-1.2.1.tgz#21466e38291551de0ab34558de21512ac4274534"
+  integrity sha512-Mrcn3l58L+yCKz3zBryM6JZpNruWuT0OCbag8w+reeNROSGVlXzUQkU+gtAwc9JCZ7tKUyg67+2YUGqUjVcyBA==
   dependencies:
-    bn.js "4.11.6"
-    eth-lib "0.1.27"
+    bn.js "4.11.8"
+    eth-lib "0.2.7"
     ethjs-unit "0.1.6"
     number-to-bn "1.7.0"
     randomhex "0.1.5"
-    underscore "1.8.3"
-    utf8 "2.1.1"
+    underscore "1.9.1"
+    utf8 "3.0.0"
 
-web3@1.0.0-beta.37:
-  version "1.0.0-beta.37"
-  resolved "https://registry.yarnpkg.com/web3/-/web3-1.0.0-beta.37.tgz#b42c30e67195f816cd19d048fda872f70eca7083"
-  integrity sha512-8XLgUspdzicC/xHG82TLrcF/Fxzj2XYNJ1KTYnepOI77bj5rvpsxxwHYBWQ6/JOjk0HkZqoBfnXWgcIHCDhZhQ==
+web3@^1.0.0-beta.37:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/web3/-/web3-1.2.1.tgz#5d8158bcca47838ab8c2b784a2dee4c3ceb4179b"
+  integrity sha512-nNMzeCK0agb5i/oTWNdQ1aGtwYfXzHottFP2Dz0oGIzavPMGSKyVlr8ibVb1yK5sJBjrWVnTdGaOC2zKDFuFRw==
   dependencies:
-    web3-bzz "1.0.0-beta.37"
-    web3-core "1.0.0-beta.37"
-    web3-eth "1.0.0-beta.37"
-    web3-eth-personal "1.0.0-beta.37"
-    web3-net "1.0.0-beta.37"
-    web3-shh "1.0.0-beta.37"
-    web3-utils "1.0.0-beta.37"
+    web3-bzz "1.2.1"
+    web3-core "1.2.1"
+    web3-eth "1.2.1"
+    web3-eth-personal "1.2.1"
+    web3-net "1.2.1"
+    web3-shh "1.2.1"
+    web3-utils "1.2.1"
 
 webpack-cli@^3.3.6:
   version "3.3.6"
@@ -5721,13 +5796,14 @@ webpack@^4.39.1:
     watchpack "^1.6.0"
     webpack-sources "^1.4.1"
 
-"websocket@git://github.com/frozeman/WebSocket-Node.git#browserifyCompatible":
-  version "1.0.26"
-  resolved "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2"
+"websocket@github:web3-js/WebSocket-Node#polyfill/globalThis":
+  version "1.0.29"
+  resolved "https://codeload.github.com/web3-js/WebSocket-Node/tar.gz/905deb4812572b344f5801f8c9ce8bb02799d82e"
   dependencies:
     debug "^2.2.0"
-    nan "^2.3.3"
-    typedarray-to-buffer "^3.1.2"
+    es5-ext "^0.10.50"
+    nan "^2.14.0"
+    typedarray-to-buffer "^3.1.5"
     yaeti "^0.0.6"
 
 which-module@^2.0.0: