diff --git a/docs/examples/promise/05_read_storage/index.js b/docs/examples/promise/05_read_storage/index.js
index 28d30a9995..f138316a3d 100755
--- a/docs/examples/promise/05_read_storage/index.js
+++ b/docs/examples/promise/05_read_storage/index.js
@@ -24,7 +24,7 @@ async function main () {
   if (validators && validators.length > 0) {
     // Retrieve the balances for all validators
     const validatorBalances = await Promise.all(
-      validators.map(authorityId =>
+      validators.map((authorityId) =>
         api.query.system.account(authorityId)
       )
     );
diff --git a/docs/examples/rx/05_read_storage/index.js b/docs/examples/rx/05_read_storage/index.js
index 0d049acd25..f169a3e85f 100644
--- a/docs/examples/rx/05_read_storage/index.js
+++ b/docs/examples/rx/05_read_storage/index.js
@@ -22,7 +22,7 @@ function main () {
         // In the next step, we're checking if the node has active validators.
         // If it does, we're making another call to the api to get the balances for all validators
         const balances = (validators && validators.length > 0)
-          ? combineLatest(validators.map(authorityId => api.query.system.account(authorityId).pipe(first())))
+          ? combineLatest(validators.map((authorityId) => api.query.system.account(authorityId).pipe(first())))
           : of(null);
 
         // We're combining the results together with the emitted value 'validators',
diff --git a/package.json b/package.json
index 55ee684d22..7e3e8f6c77 100644
--- a/package.json
+++ b/package.json
@@ -26,9 +26,9 @@
   "devDependencies": {
     "@babel/core": "^7.9.0",
     "@babel/register": "^7.9.0",
-    "@babel/runtime": "^7.9.0",
-    "@polkadot/dev": "^0.51.6",
-    "@polkadot/ts": "^0.3.13",
+    "@babel/runtime": "^7.9.2",
+    "@polkadot/dev": "^0.51.7",
+    "@polkadot/ts": "^0.3.14",
     "@polkadot/typegen": "workspace:packages/typegen",
     "@types/jest": "^25.1.4",
     "copyfiles": "^2.2.0"
diff --git a/packages/api-contract/package.json b/packages/api-contract/package.json
index 6e233bcf12..c71ff1c0ed 100644
--- a/packages/api-contract/package.json
+++ b/packages/api-contract/package.json
@@ -26,7 +26,7 @@
   },
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/api-contract#readme",
   "dependencies": {
-    "@babel/runtime": "^7.9.0",
+    "@babel/runtime": "^7.9.2",
     "@polkadot/api": "1.8.0-beta.8",
     "@polkadot/rpc-core": "1.8.0-beta.8",
     "@polkadot/types": "1.8.0-beta.8",
diff --git a/packages/api-contract/src/ContractRegistry.ts b/packages/api-contract/src/ContractRegistry.ts
index d5173cd038..e57f8a1c07 100644
--- a/packages/api-contract/src/ContractRegistry.ts
+++ b/packages/api-contract/src/ContractRegistry.ts
@@ -158,10 +158,10 @@ export default class ContractRegistry extends MetaRegistry {
   public convertContract ({ constructors, messages, name, events, ...contract }: ContractABIContractPre): ContractABIContract {
     return {
       constructors: this.convertConstructors(constructors),
-      messages: messages.map(message => this.convertMessage(message)),
+      messages: messages.map((message) => this.convertMessage(message)),
       name: this.stringAt(name),
       ...(events
-        ? { events: events.map(event => this.convertEvent(event)) }
+        ? { events: events.map((event) => this.convertEvent(event)) }
         : {}),
       ...contract
     };
diff --git a/packages/api-contract/src/MetaRegistry.ts b/packages/api-contract/src/MetaRegistry.ts
index ba6646436f..c15ba2cdb2 100644
--- a/packages/api-contract/src/MetaRegistry.ts
+++ b/packages/api-contract/src/MetaRegistry.ts
@@ -275,7 +275,7 @@ export default class MetaRegistry extends MetadataRegistryLookup {
       case 'Result':
         return this.typeDefForResult(id, typeIndex);
       default: {
-        const sub = def['enum.variants'].map(variant => this.typeDefForEnumVariant(variant));
+        const sub = def['enum.variants'].map((variant) => this.typeDefForEnumVariant(variant));
 
         return {
           info: TypeDefInfo.Enum,
diff --git a/packages/api-derive/package.json b/packages/api-derive/package.json
index 1e2d676fe2..0d6fd977dd 100644
--- a/packages/api-derive/package.json
+++ b/packages/api-derive/package.json
@@ -27,7 +27,7 @@
   },
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/api-derive#readme",
   "dependencies": {
-    "@babel/runtime": "^7.9.0",
+    "@babel/runtime": "^7.9.2",
     "@polkadot/api": "1.8.0-beta.8",
     "@polkadot/rpc-core": "1.8.0-beta.8",
     "@polkadot/rpc-provider": "1.8.0-beta.8",
diff --git a/packages/api/package.json b/packages/api/package.json
index abb7d731b2..e16fec7b3d 100644
--- a/packages/api/package.json
+++ b/packages/api/package.json
@@ -26,7 +26,7 @@
   },
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/api#readme",
   "dependencies": {
-    "@babel/runtime": "^7.9.0",
+    "@babel/runtime": "^7.9.2",
     "@polkadot/api-derive": "1.8.0-beta.8",
     "@polkadot/keyring": "^2.6.2",
     "@polkadot/metadata": "1.8.0-beta.8",
diff --git a/packages/metadata/package.json b/packages/metadata/package.json
index 19aa935215..212e3752c3 100644
--- a/packages/metadata/package.json
+++ b/packages/metadata/package.json
@@ -26,7 +26,7 @@
   },
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/type-metadata#readme",
   "dependencies": {
-    "@babel/runtime": "^7.9.0",
+    "@babel/runtime": "^7.9.2",
     "@polkadot/types": "1.8.0-beta.8",
     "@polkadot/util": "^2.6.2",
     "@polkadot/util-crypto": "^2.6.2",
diff --git a/packages/rpc-core/package.json b/packages/rpc-core/package.json
index 09aae839d0..081ef83bd9 100644
--- a/packages/rpc-core/package.json
+++ b/packages/rpc-core/package.json
@@ -26,7 +26,7 @@
   },
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/rpc-core#readme",
   "dependencies": {
-    "@babel/runtime": "^7.9.0",
+    "@babel/runtime": "^7.9.2",
     "@polkadot/metadata": "1.8.0-beta.8",
     "@polkadot/rpc-provider": "1.8.0-beta.8",
     "@polkadot/types": "1.8.0-beta.8",
diff --git a/packages/rpc-provider/package.json b/packages/rpc-provider/package.json
index 699d782d4b..a8bfe07e80 100644
--- a/packages/rpc-provider/package.json
+++ b/packages/rpc-provider/package.json
@@ -26,7 +26,7 @@
   },
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/rpc-provider#readme",
   "dependencies": {
-    "@babel/runtime": "^7.9.0",
+    "@babel/runtime": "^7.9.2",
     "@polkadot/metadata": "1.8.0-beta.8",
     "@polkadot/types": "1.8.0-beta.8",
     "@polkadot/util": "^2.6.2",
diff --git a/packages/typegen/package.json b/packages/typegen/package.json
index 34710f2366..099fdd5055 100644
--- a/packages/typegen/package.json
+++ b/packages/typegen/package.json
@@ -35,7 +35,7 @@
   "dependencies": {
     "@babel/core": "^7.9.0",
     "@babel/register": "^7.9.0",
-    "@babel/runtime": "^7.9.0",
+    "@babel/runtime": "^7.9.2",
     "@polkadot/api": "1.8.0-beta.8",
     "@polkadot/metadata": "1.8.0-beta.8",
     "@polkadot/rpc-provider": "1.8.0-beta.8",
diff --git a/packages/typegen/src/metadataMd.ts b/packages/typegen/src/metadataMd.ts
index 0bd5ebed01..82f4b772c5 100644
--- a/packages/typegen/src/metadataMd.ts
+++ b/packages/typegen/src/metadataMd.ts
@@ -52,7 +52,7 @@ function documentationVecToMarkdown (docLines: Vec<Text>, indent = 0): string {
             .replace(/^#{1,3} /, '#### ')} `
     , '');
   // prefix each line with indentation
-  return md && md.split('\n\n').map(line => `${' '.repeat(indent)}${line}`).join('\n\n');
+  return md && md.split('\n\n').map((line) => `${' '.repeat(indent)}${line}`).join('\n\n');
 }
 
 function renderPage (page: Page): string {
@@ -68,7 +68,7 @@ function renderPage (page: Page): string {
   });
 
   // contents
-  page.sections.forEach(section => {
+  page.sections.forEach((section) => {
     md += `\n___\n\n\n## ${section.name}\n`;
 
     if (section.description) {
@@ -78,7 +78,7 @@ function renderPage (page: Page): string {
     section.items.forEach((item) => {
       md += ` \n### ${item.name}`;
 
-      Object.keys(item).filter(i => i !== 'name').forEach(bullet => {
+      Object.keys(item).filter((i) => i !== 'name').forEach((bullet) => {
         md += `\n- **${bullet}**: ${
           item[bullet] instanceof Vec
             ? documentationVecToMarkdown(item[bullet] as Vec<Text>, 2)
diff --git a/packages/typegen/src/util/derived.ts b/packages/typegen/src/util/derived.ts
index 9c7d2dca53..53ba32b216 100644
--- a/packages/typegen/src/util/derived.ts
+++ b/packages/typegen/src/util/derived.ts
@@ -61,7 +61,8 @@ export function getDerivedTypes (definitions: object, type: string, primitiveNam
     });
   }
 
-  const result = types.map(t => formatType(definitions, t, imports)).map(t => `'${t}': ${t};`);
+  const result = types.map((t) => formatType(definitions, t, imports)).map((t) => `'${t}': ${t};`);
+
   result.unshift(`${type}: ${type};`);
 
   return result;
diff --git a/packages/types/package.json b/packages/types/package.json
index 906c5d52a8..ae0948c906 100644
--- a/packages/types/package.json
+++ b/packages/types/package.json
@@ -26,7 +26,7 @@
   },
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/types#readme",
   "dependencies": {
-    "@babel/runtime": "^7.9.0",
+    "@babel/runtime": "^7.9.2",
     "@polkadot/metadata": "1.8.0-beta.8",
     "@polkadot/util": "^2.6.2",
     "@polkadot/util-crypto": "^2.6.2",
diff --git a/yarn.lock b/yarn.lock
index 524b2e52e3..7aa6a4a7b8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1310,6 +1310,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@babel/runtime@npm:^7.9.2":
+  version: 7.9.2
+  resolution: "@babel/runtime@npm:7.9.2"
+  dependencies:
+    regenerator-runtime: ^0.13.4
+  checksum: 2/50c65b4972e62ca260ff6f3f99cf2395585d7f7bcd947ee87d082c2926cb4f0c93c815d5e9071162e689a4d2ba4143ffd5b005893be860088689c963f34e50c8
+  languageName: node
+  linkType: hard
+
 "@babel/template@npm:^7.7.4, @babel/template@npm:^7.8.3, @babel/template@npm:^7.8.6":
   version: 7.8.6
   resolution: "@babel/template@npm:7.8.6"
@@ -2587,7 +2596,7 @@ __metadata:
   version: 0.0.0-use.local
   resolution: "@polkadot/api-contract@workspace:packages/api-contract"
   dependencies:
-    "@babel/runtime": ^7.9.0
+    "@babel/runtime": ^7.9.2
     "@polkadot/api": 1.8.0-beta.8
     "@polkadot/rpc-core": 1.8.0-beta.8
     "@polkadot/types": 1.8.0-beta.8
@@ -2601,7 +2610,7 @@ __metadata:
   version: 0.0.0-use.local
   resolution: "@polkadot/api-derive@workspace:packages/api-derive"
   dependencies:
-    "@babel/runtime": ^7.9.0
+    "@babel/runtime": ^7.9.2
     "@polkadot/api": 1.8.0-beta.8
     "@polkadot/keyring": ^2.6.2
     "@polkadot/rpc-core": 1.8.0-beta.8
@@ -2619,7 +2628,7 @@ __metadata:
   version: 0.0.0-use.local
   resolution: "@polkadot/api@workspace:packages/api"
   dependencies:
-    "@babel/runtime": ^7.9.0
+    "@babel/runtime": ^7.9.2
     "@polkadot/api-derive": 1.8.0-beta.8
     "@polkadot/keyring": ^2.6.2
     "@polkadot/metadata": 1.8.0-beta.8
@@ -2634,9 +2643,9 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"@polkadot/dev@npm:^0.51.6":
-  version: 0.51.6
-  resolution: "@polkadot/dev@npm:0.51.6"
+"@polkadot/dev@npm:^0.51.7":
+  version: 0.51.7
+  resolution: "@polkadot/dev@npm:0.51.7"
   dependencies:
     "@babel/cli": ^7.8.4
     "@babel/core": ^7.9.0
@@ -2716,7 +2725,7 @@ __metadata:
     polkadot-exec-typedoc: scripts/polkadot-exec-typedoc.js
     polkadot-exec-vuepress: scripts/polkadot-exec-vuepress.js
     polkadot-exec-webpack: scripts/polkadot-exec-webpack.js
-  checksum: 2/05d32b22a912e1b283b3dbabd7a73764058b1f6731b6f0a999cad23426311ef8f7a5a27ad2dd405909a5e356a5abbc15d41bd2ed9af2339d86866c6394736bfa
+  checksum: 2/e4c7a2e512343f627e068fc12b696ed4a2dd95c1e608885738b6bcbf979d9aac85940699e7d696cee49e5a3adb66e7ed2635bd260f6fe18b018d7b6df5ca71f9
   languageName: node
   linkType: hard
 
@@ -2735,7 +2744,7 @@ __metadata:
   version: 0.0.0-use.local
   resolution: "@polkadot/metadata@workspace:packages/metadata"
   dependencies:
-    "@babel/runtime": ^7.9.0
+    "@babel/runtime": ^7.9.2
     "@polkadot/keyring": ^2.6.2
     "@polkadot/types": 1.8.0-beta.8
     "@polkadot/util": ^2.6.2
@@ -2748,7 +2757,7 @@ __metadata:
   version: 0.0.0-use.local
   resolution: "@polkadot/rpc-core@workspace:packages/rpc-core"
   dependencies:
-    "@babel/runtime": ^7.9.0
+    "@babel/runtime": ^7.9.2
     "@polkadot/keyring": ^2.6.2
     "@polkadot/metadata": 1.8.0-beta.8
     "@polkadot/rpc-provider": 1.8.0-beta.8
@@ -2763,7 +2772,7 @@ __metadata:
   version: 0.0.0-use.local
   resolution: "@polkadot/rpc-provider@workspace:packages/rpc-provider"
   dependencies:
-    "@babel/runtime": ^7.9.0
+    "@babel/runtime": ^7.9.2
     "@polkadot/keyring": ^2.6.2
     "@polkadot/metadata": 1.8.0-beta.8
     "@polkadot/types": 1.8.0-beta.8
@@ -2778,12 +2787,12 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"@polkadot/ts@npm:^0.3.13":
-  version: 0.3.13
-  resolution: "@polkadot/ts@npm:0.3.13"
+"@polkadot/ts@npm:^0.3.14":
+  version: 0.3.14
+  resolution: "@polkadot/ts@npm:0.3.14"
   dependencies:
-    "@types/chrome": ^0.0.100
-  checksum: 2/6211a917a49248638184ed565db4d82b30ab8ba6ccb3fbca35a05b4bd058614b5788303a473db97a7c4ba5c6b96e5c5249c8e3c85a336208ddb3ab7c0bb24446
+    "@types/chrome": ^0.0.101
+  checksum: 2/957242a557833596bbf1a94e4a9340be1bb6152a33aeac1ae94eef20e5380c9af1b41719b2943d96da7019478c09756192b74fc5bb0b7ee5f2fd60d977fe6f23
   languageName: node
   linkType: hard
 
@@ -2793,7 +2802,7 @@ __metadata:
   dependencies:
     "@babel/core": ^7.9.0
     "@babel/register": ^7.9.0
-    "@babel/runtime": ^7.9.0
+    "@babel/runtime": ^7.9.2
     "@polkadot/api": 1.8.0-beta.8
     "@polkadot/metadata": 1.8.0-beta.8
     "@polkadot/rpc-provider": 1.8.0-beta.8
@@ -2816,7 +2825,7 @@ __metadata:
   version: 0.0.0-use.local
   resolution: "@polkadot/types@workspace:packages/types"
   dependencies:
-    "@babel/runtime": ^7.9.0
+    "@babel/runtime": ^7.9.2
     "@polkadot/keyring": ^2.6.2
     "@polkadot/metadata": 1.8.0-beta.8
     "@polkadot/util": ^2.6.2
@@ -2948,12 +2957,12 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@types/chrome@npm:^0.0.100":
-  version: 0.0.100
-  resolution: "@types/chrome@npm:0.0.100"
+"@types/chrome@npm:^0.0.101":
+  version: 0.0.101
+  resolution: "@types/chrome@npm:0.0.101"
   dependencies:
     "@types/filesystem": "*"
-  checksum: 2/78bd90d6f04383b689b5bb0026ecbc3c297c6f7c43444b6300de4b2e0a2f08e5f08ead1b2a23e8f6f4b3b474e26def043a6e7116470da84a1455b33a9e7ec0cc
+  checksum: 2/ad3906874fa0ef3d5921a5d3b56830cef9d03e286b9c475fd6fa6330ddc105873b7626eb6d7112192471e702e5b86563471b6fbc9152fd2209bbf6c0c88a980b
   languageName: node
   linkType: hard
 
@@ -15300,9 +15309,9 @@ __metadata:
   dependencies:
     "@babel/core": ^7.9.0
     "@babel/register": ^7.9.0
-    "@babel/runtime": ^7.9.0
-    "@polkadot/dev": ^0.51.6
-    "@polkadot/ts": ^0.3.13
+    "@babel/runtime": ^7.9.2
+    "@polkadot/dev": ^0.51.7
+    "@polkadot/ts": ^0.3.14
     "@polkadot/typegen": "workspace:packages/typegen"
     "@types/jest": ^25.1.4
     copyfiles: ^2.2.0