diff --git a/package.json b/package.json
index 8df31a4d..a3dda87d 100644
--- a/package.json
+++ b/package.json
@@ -23,13 +23,13 @@
     "build": "yarn clear && concurrently 'yarn:build:*'",
     "test": "node --experimental-test-coverage --test-reporter=lcov --test-reporter-destination=lcov.info --test '**/*.test.*'",
     "lint": "concurrently 'yarn:lint:*'",
-    "lint:tsc": "tsc --noEmit",
+    "lint:tsc": "tsc -b --noEmit",
     "lint:biome": "biome check",
     "prepublishOnly": "yarn build",
     "publish-package": "yarn install --check-files && yarn publish --non-interactive",
     "swc-base": "swc src/ --config-file package.swcrc --strip-leading-paths",
     "build:es6": "yarn swc-base -d lib",
-    "build:types": "cross-env NODE_ENV=production tsc --project tsconfig.build.json",
+    "build:types": "cross-env NODE_ENV=production tsc --project tsconfig.lib.json",
     "size": "yarn build && size-limit",
     "docs": "typedoc"
   },
@@ -91,7 +91,7 @@
     "ts-node": "^10.9.2",
     "typedoc": "^0.28.18",
     "typedoc-plugin-mdn-links": "^5.1.1",
-    "typescript": "^5.8.3"
+    "typescript": "^6.0.2"
   },
   "dependencies": {
     "@swc/helpers": "^0.5.20",
diff --git a/src/array/arrays.ts b/src/array/arrays.ts
index a350d1c2..fd1b8e64 100644
--- a/src/array/arrays.ts
+++ b/src/array/arrays.ts
@@ -153,7 +153,8 @@ export function omitFromArray<T>(array: T[] = [], value: T): T[] {
  */
 export function difference<T>(array1: readonly T[] = [], array2: readonly T[] = []): T[] {
   return array1.reduce<T[]>((res, item) => {
-    if (!array2.includes(item)) {
+    // TODO: после поднятия таргета es, необходимо заменить на includes
+    if (!array2.some((value) => (Number.isNaN(value) && Number.isNaN(item)) || value === item)) {
       res.push(item);
     }
     return res;
diff --git a/src/other/functions.ts b/src/other/functions.ts
index 7a0f1ccf..afce51a4 100644
--- a/src/other/functions.ts
+++ b/src/other/functions.ts
@@ -28,7 +28,7 @@ export const noop = (): void => {
 export function once<T extends (...args: unknown[]) => unknown>(fn: T) {
   // TODO: once должна кэшировать данные, но она это не делает
   let called = false;
-  return function (...args) {
+  return function (this: unknown, ...args) {
     if (called) {
       return;
     }
diff --git a/tsconfig.build.json b/tsconfig.build.json
deleted file mode 100644
index 701dc52f..00000000
--- a/tsconfig.build.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "extends": "./tsconfig.json",
-  "compilerOptions": {
-    "declaration": true,
-    "emitDeclarationOnly": true
-  },
-  "exclude": ["src/**/*.spec.ts", "src/**/*.test.ts"]
-}
diff --git a/tsconfig.json b/tsconfig.json
index 4db931b1..81e9f936 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,44 +1,4 @@
 {
-  "compilerOptions": {
-    "module": "nodenext",
-    "target": "es5",
-    "lib": ["es5", "es2015", "dom"],
-    "moduleResolution": "nodenext",
-    "allowImportingTsExtensions": true,
-    "noEmit": true,
-    "noImplicitAny": true,
-    "removeComments": true,
-    "preserveConstEnums": true,
-    "strictNullChecks": true,
-    "declaration": true,
-    "declarationMap": true,
-    "declarationDir": "lib",
-    "sourceMap": false,
-    "baseUrl": "src",
-    "esModuleInterop": true,
-    "emitDeclarationOnly": true,
-    "isolatedDeclarations": true,
-    "skipLibCheck": true,
-    "rewriteRelativeImportExtensions": true,
-    "erasableSyntaxOnly": true,
-    "verbatimModuleSyntax": true
-  },
-  "include": ["src/**/*.ts"],
-  "exclude": ["node_modules"],
-  "typedocOptions": {
-    "readme": "README.md",
-    "plugin": ["typedoc-plugin-mdn-links"],
-    "entryPoints": [
-      "src/animation/index.ts",
-      "src/array/index.ts",
-      "src/async/index.ts",
-      "src/datetime/index.ts",
-      "src/device/index.ts",
-      "src/html/index.ts",
-      "src/other/index.ts",
-      "src/text/index.ts",
-      "src/typecheck/index.ts"
-    ],
-    "out": "docs"
-  }
+  "files": [],
+  "references": [{ "path": "./tsconfig.lib.json" }, { "path": "./tsconfig.node.json" }]
 }
diff --git a/tsconfig.lib.json b/tsconfig.lib.json
new file mode 100644
index 00000000..e66120cf
--- /dev/null
+++ b/tsconfig.lib.json
@@ -0,0 +1,44 @@
+{
+  "compilerOptions": {
+    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.lib.tsbuildinfo",
+    "module": "nodenext",
+    "target": "es2015",
+    "lib": ["es2015", "dom"],
+    "moduleResolution": "nodenext",
+    "allowImportingTsExtensions": true,
+    "noEmit": true,
+    "noImplicitAny": true,
+    "removeComments": true,
+    "preserveConstEnums": true,
+    "strictNullChecks": true,
+    "declaration": true,
+    "declarationMap": true,
+    "declarationDir": "lib",
+    "sourceMap": false,
+    "esModuleInterop": true,
+    "emitDeclarationOnly": true,
+    "isolatedDeclarations": true,
+    "skipLibCheck": true,
+    "rewriteRelativeImportExtensions": true,
+    "erasableSyntaxOnly": true,
+    "verbatimModuleSyntax": true
+  },
+  "include": ["src/**/*.ts"],
+  "exclude": ["node_modules", "src/**/*test.ts"],
+  "typedocOptions": {
+    "readme": "README.md",
+    "plugin": ["typedoc-plugin-mdn-links"],
+    "entryPoints": [
+      "src/animation/index.ts",
+      "src/array/index.ts",
+      "src/async/index.ts",
+      "src/datetime/index.ts",
+      "src/device/index.ts",
+      "src/html/index.ts",
+      "src/other/index.ts",
+      "src/text/index.ts",
+      "src/typecheck/index.ts"
+    ],
+    "out": "docs"
+  }
+}
diff --git a/tsconfig.node.json b/tsconfig.node.json
new file mode 100644
index 00000000..dd580a34
--- /dev/null
+++ b/tsconfig.node.json
@@ -0,0 +1,30 @@
+{
+  "compilerOptions": {
+    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.node.tsbuildinfo",
+    "target": "ESNext",
+    "lib": ["ESNext", "dom"],
+    "module": "nodenext",
+    "types": ["node"],
+    "skipLibCheck": true,
+
+    /* Bundler mode */
+    "moduleResolution": "nodenext",
+    "allowImportingTsExtensions": true,
+    "verbatimModuleSyntax": true,
+    "moduleDetection": "force",
+    "noEmit": true,
+    "rewriteRelativeImportExtensions": true,
+
+    /* Linting */
+    "strict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "erasableSyntaxOnly": true,
+    "noFallthroughCasesInSwitch": true,
+    "noUncheckedSideEffectImports": true,
+    "noImplicitAny": true,
+    "preserveConstEnums": true,
+    "strictNullChecks": true
+  },
+  "include": ["src/**/*test.ts"]
+}
diff --git a/yarn.lock b/yarn.lock
index a211e7cb..ef32a7c9 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2465,10 +2465,10 @@ typedoc@^0.28.18:
     minimatch "^10.2.4"
     yaml "^2.8.2"
 
-typescript@^5.8.3:
-  version "5.9.3"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-5.9.3.tgz#5b4f59e15310ab17a216f5d6cf53ee476ede670f"
-  integrity sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==
+typescript@^6.0.2:
+  version "6.0.2"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-6.0.2.tgz#0b1bfb15f68c64b97032f3d78abbf98bdbba501f"
+  integrity sha512-bGdAIrZ0wiGDo5l8c++HWtbaNCWTS4UTv7RaTH/ThVIgjkveJt83m74bBHMJkuCbslY8ixgLBVZJIOiQlQTjfQ==
 
 uc.micro@^2.0.0, uc.micro@^2.1.0:
   version "2.1.0"