use previous prettier

package-lock.json

@@ -4784,9 +4784,9 @@
       "dev": true
     },
     "prettier": {
-      "version": "2.0.4",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.0.4.tgz",
-      "integrity": "sha512-SVJIQ51spzFDvh4fIbCLvciiDMCrRhlN3mbZvv/+ycjvmF5E73bKdGfU8QDLNmjYJf+lsGnDBC4UUnvTe5OO0w==",
+      "version": "1.19.1",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-1.19.1.tgz",
+      "integrity": "sha512-s7PoyDv/II1ObgQunCbB9PdLmUcBZcnWOcxDh7O0N/UwDEsHyqkW+Qh28jW+mVuCdx7gLB0BotYI1Y6uI9iyew==",
       "dev": true
     },
     "pretty-format": {

package.json

@@ -43,7 +43,7 @@
     "jest-circus": "^25.3.0",
     "nock": "^12.0.3",
     "npm-run-all": "^4.1.5",
-    "prettier": "^2.0.4",
+    "prettier": "^1.19.1",
     "ts-jest": "^25.3.1",
     "typescript": "^3.8.3"
   },