upgrade prettier to support typescript 3.7

package.json

@@ -40,6 +40,7 @@
     "test-integration": "ELECTRON_DISABLE_SANDBOX=1 mocha --exit --timeout 10000 integration_test/integration_test.js",
     "test-integration-parts": "ELECTRON_DISABLE_SANDBOX=1 mocha --exit --timeout 10000 integration_test/integration_test.js --grep 'registration' && ELECTRON_DISABLE_SANDBOX=1 mocha --exit --timeout 10000 integration_test/integration_test.js --grep 'openGroup' && ELECTRON_DISABLE_SANDBOX=1 mocha --exit --timeout 10000 integration_test/integration_test.js --grep 'addFriends' && ELECTRON_DISABLE_SANDBOX=1 mocha --exit --timeout 10000 integration_test/integration_test.js --grep 'linkDevice' && ELECTRON_DISABLE_SANDBOX=1 mocha --exit --timeout 10000 integration_test/integration_test.js --grep 'closedGroup'",
     "test-node": "mocha --recursive --exit test/app test/modules ts/test libloki/test/node",
+    "test-session": "mocha --recursive --exit ts/test/session",
     "eslint": "eslint --cache .",
     "eslint-fix": "eslint --fix .",
     "eslint-full": "eslint .",
@@ -175,7 +176,7 @@
     "node-gyp": "3.8.0",
     "node-sass-import-once": "1.2.0",
     "nyc": "11.4.1",
-    "prettier": "1.12.0",
+    "prettier": "1.19.0",
     "qs": "6.5.1",
     "react-docgen-typescript": "1.2.6",
     "react-styleguidist": "7.0.1",

yarn.lock

@@ -7699,10 +7699,10 @@ preserve@^0.2.0:
   resolved "https://registry.yarnpkg.com/preserve/-/preserve-0.2.0.tgz#815ed1f6ebc65926f865b310c0713bcb3315ce4b"
   integrity sha1-gV7R9uvGWSb4ZbMQwHE7yzMVzks=
 
-prettier@1.12.0:
-  version "1.12.0"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.12.0.tgz#d26fc5894b9230de97629b39cae225b503724ce8"
-  integrity sha512-Wz0SMncgaglBzDcohH3ZIAi4nVpzOIEweFzCOmgVEoRSeO72b4dcKGfgxoRGVMaFlh1r7dlVaJ+f3CIHfeH6xg==
+prettier@1.19.0:
+  version "1.19.0"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.19.0.tgz#3bec4489d5eebcd52b95ddd2c22467b5c852fde1"
+  integrity sha512-GlAIjk6DjkNT6u/Bw5QCWrbzh9YlLKwwmJT//1YiCR3WDpZDnyss64aXHQZgF8VKeGlWnX6+tGsKSVxsZT/gtA==
 
 pretty-bytes@^1.0.2:
   version "1.0.4"