update ajv/ajv-formats versions, import fast-deep-equal directly

Author: epoberezkin

package.json

@@ -34,8 +34,11 @@
     "url": "https://github.com/epoberezkin/ajv-keywords/issues"
   },
   "homepage": "https://github.com/epoberezkin/ajv-keywords#readme",
+  "dependencies": {
+    "fast-deep-equal": "^3.1.3"
+  },
   "peerDependencies": {
-    "ajv": "^8.0.0-beta.0"
+    "ajv": "^8.0.0-beta.4"
   },
   "devDependencies": {
     "@ajv-validator/config": "^0.2.3",
@@ -45,8 +48,8 @@
     "@types/uuid": "^8.3.0",
     "@typescript-eslint/eslint-plugin": "^4.4.1",
     "@typescript-eslint/parser": "^4.4.1",
-    "ajv": "^8.0.0-beta.0",
-    "ajv-formats": "^1.5.1",
+    "ajv": "^8.0.0-beta.4",
+    "ajv-formats": "^2.0.0-beta.2",
     "chai": "^4.2.0",
     "eslint": "^7.2.0",
     "eslint-config-prettier": "^7.0.0",

src/definitions/uniqueItemProperties.ts

@@ -1,5 +1,5 @@
 import type {FuncKeywordDefinition, AnySchemaObject} from "ajv"
-import equal from "ajv/dist/compile/equal"
+import equal = require("fast-deep-equal")
 
 const SCALAR_TYPES = ["number", "integer", "string", "boolean", "null"]