diff --git a/.c8rc.json b/.c8rc.json
new file mode 100644
index 0000000..0b54efc
--- /dev/null
+++ b/.c8rc.json
@@ -0,0 +1,13 @@
+{
+  "include": ["src/**/*"],
+  "exclude": [
+    "**/*.test.{ts,tsx}",
+    "src/rspack/**/*",
+    "src/types/**/*",
+    "**/types.ts",
+    "**/mod.ts"
+  ],
+  "extension": [".ts", ".tsx"],
+  "reporter": ["text", "html"],
+  "all": true
+}
diff --git a/package-lock.json b/package-lock.json
index 886f86e..a3446d1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -21,6 +21,7 @@
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         "@types/react-dom": "^19.2.3",
         "better-commits": "^1.17.0",
+        "c8": "^12.0.0",
         "eslint": "^9.35.0",
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@@ -29,7 +30,7 @@
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         "svgo": "^4.0.0",
-        "ts-loader": "npm:@krutoo/ts-loader@^0.0.4",
+        "ts-loader": "npm:@krutoo/ts-loader@^0.0.5",
         "typescript": "^5.9.3"
       },
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@@ -346,6 +347,16 @@
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+      "resolved": "https://registry.npmjs.org/@bcoe/v8-coverage/-/v8-coverage-1.0.2.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "engines": {
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+      }
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@@ -1047,6 +1058,16 @@
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       }
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+    "node_modules/@istanbuljs/schema": {
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+      "resolved": "https://registry.npmjs.org/@istanbuljs/schema/-/schema-0.1.6.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/@jridgewell/gen-mapping": {
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       "resolved": "https://registry.npmjs.org/@jridgewell/gen-mapping/-/gen-mapping-0.3.13.tgz",
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@@ -1087,8 +1107,7 @@
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       "dev": true,
-      "license": "MIT",
-      "peer": true
+      "license": "MIT"
     },
     "node_modules/@jridgewell/trace-mapping": {
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@@ -1096,7 +1115,6 @@
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@@ -1562,6 +1580,13 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@types/istanbul-lib-coverage": {
+      "version": "2.0.6",
+      "resolved": "https://registry.npmjs.org/@types/istanbul-lib-coverage/-/istanbul-lib-coverage-2.0.6.tgz",
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+      "dev": true,
+      "license": "MIT"
+    },
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@@ -2297,6 +2322,291 @@
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       }
     },
+    "node_modules/c8": {
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+      "resolved": "https://registry.npmjs.org/c8/-/c8-12.0.0.tgz",
+      "integrity": "sha512-4zpJvrd1nKWutnnKC2pXkFmb6iM1l+ffN//o1CzlTNwW7GSOs9a1xrLqkC48nU8oEkjmPZLPiwMsIaOvoF4Pqg==",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "@bcoe/v8-coverage": "^1.0.1",
+        "@istanbuljs/schema": "^0.1.3",
+        "find-up": "^5.0.0",
+        "foreground-child": "^3.1.1",
+        "istanbul-lib-coverage": "^3.2.0",
+        "istanbul-lib-report": "^3.0.1",
+        "istanbul-reports": "^3.1.6",
+        "test-exclude": "^8.0.0",
+        "v8-to-istanbul": "^9.0.0",
+        "yargs": "^18.0.0",
+        "yargs-parser": "^21.1.1"
+      },
+      "bin": {
+        "c8": "bin/c8.js"
+      },
+      "engines": {
+        "node": "^20.19.0 || ^22.12.0 || >=23"
+      },
+      "peerDependencies": {
+        "monocart-coverage-reports": "^2"
+      },
+      "peerDependenciesMeta": {
+        "monocart-coverage-reports": {
+          "optional": true
+        }
+      }
+    },
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+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-6.3.0.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/ansi-regex?sponsor=1"
+      }
+    },
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+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-6.2.3.tgz",
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+      "license": "MIT",
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+      },
+      "funding": {
+        "url": "https://github.com/chalk/ansi-styles?sponsor=1"
+      }
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+      "resolved": "https://registry.npmjs.org/cliui/-/cliui-9.0.1.tgz",
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+      "license": "ISC",
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+        "strip-ansi": "^7.1.0",
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+      "funding": {
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+      },
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+      "funding": {
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+      "license": "MIT",
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+        "get-east-asian-width": "^1.0.0",
+        "strip-ansi": "^7.1.0"
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+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
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+        "escalade": "^3.1.1",
+        "get-caller-file": "^2.0.5",
+        "string-width": "^8.2.1",
+        "y18n": "^5.0.5",
+        "yargs-parser": "^22.0.0"
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+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-22.0.0.tgz",
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+      "dev": true,
+      "license": "ISC",
+      "engines": {
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+      "resolved": "https://registry.npmjs.org/yocto-queue/-/yocto-queue-0.1.0.tgz",
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+      "dev": true,
+      "license": "MIT",
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+        "url": "https://github.com/sponsors/sindresorhus"
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       "dev": true,
-      "license": "MIT",
-      "peer": true
+      "license": "MIT"
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@@ -3924,6 +4233,23 @@
         "url": "https://github.com/sponsors/ljharb"
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+      "license": "ISC",
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@@ -4000,6 +4326,19 @@
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+      "dev": true,
+      "license": "MIT",
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+      "funding": {
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@@ -4204,6 +4543,24 @@
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@@ -4217,6 +4574,45 @@
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+    "node_modules/glob/node_modules/balanced-match": {
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+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-4.0.4.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "engines": {
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+      }
+    },
+    "node_modules/glob/node_modules/brace-expansion": {
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+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-5.0.9.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "balanced-match": "^4.0.2"
+      },
+      "engines": {
+        "node": "20 || >=22"
+      }
+    },
+    "node_modules/glob/node_modules/minimatch": {
+      "version": "10.2.6",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-10.2.6.tgz",
+      "integrity": "sha512-vpLQEs+VLCr1nU0BXS07maYoFwlDAH0gngQuuttxIwutDFEMHq2blX+8vpgxDdK3J1PwjCJiep77OitTZ4Ll1A==",
+      "dev": true,
+      "license": "BlueOak-1.0.0",
+      "dependencies": {
+        "brace-expansion": "^5.0.8"
+      },
+      "engines": {
+        "node": "18 || 20 || >=22"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
     "node_modules/global-directory": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/global-directory/-/global-directory-4.0.1.tgz",
@@ -4440,6 +4836,13 @@
       "license": "MIT",
       "peer": true
     },
+    "node_modules/html-escaper": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/html-escaper/-/html-escaper-2.0.2.tgz",
+      "integrity": "sha512-H2iMtd0I4Mt5eYiapRdIDjp+XzelXQ0tFE4JS7YFwFevXXMmOp9myNrUvCg0D6ws8iqkRPBfKHgbwig1SmlLfg==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/human-signals": {
       "version": "8.0.1",
       "resolved": "https://registry.npmjs.org/human-signals/-/human-signals-8.0.1.tgz",
@@ -5061,6 +5464,45 @@
       "dev": true,
       "license": "ISC"
     },
+    "node_modules/istanbul-lib-coverage": {
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/istanbul-lib-coverage/-/istanbul-lib-coverage-3.2.2.tgz",
+      "integrity": "sha512-O8dpsF+r0WV/8MNRKfnmrtCWhuKjxrq2w+jpzBL5UZKTi2LeVWnWOmWRxFlesJONmc+wLAGvKQZEOanko0LFTg==",
+      "dev": true,
+      "license": "BSD-3-Clause",
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/istanbul-lib-report": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/istanbul-lib-report/-/istanbul-lib-report-3.0.1.tgz",
+      "integrity": "sha512-GCfE1mtsHGOELCU8e/Z7YWzpmybrx/+dSTfLrvY8qRmaY6zXTKWn6WQIjaAFw069icm6GVMNkgu0NzI4iPZUNw==",
+      "dev": true,
+      "license": "BSD-3-Clause",
+      "dependencies": {
+        "istanbul-lib-coverage": "^3.0.0",
+        "make-dir": "^4.0.0",
+        "supports-color": "^7.1.0"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/istanbul-reports": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/istanbul-reports/-/istanbul-reports-3.2.0.tgz",
+      "integrity": "sha512-HGYWWS/ehqTV3xN10i23tkPkpH46MLCIMFNCaaKNavAXTF1RkqxawEPtnjnGZ6XKSInBKkiOA5BKS+aZiY3AvA==",
+      "dev": true,
+      "license": "BSD-3-Clause",
+      "dependencies": {
+        "html-escaper": "^2.0.0",
+        "istanbul-lib-report": "^3.0.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/iterator.prototype": {
       "version": "1.1.5",
       "resolved": "https://registry.npmjs.org/iterator.prototype/-/iterator.prototype-1.1.5.tgz",
@@ -5400,6 +5842,22 @@
         "lz-string": "bin/bin.js"
       }
     },
+    "node_modules/make-dir": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/make-dir/-/make-dir-4.0.0.tgz",
+      "integrity": "sha512-hXdUTZYIVOt1Ex//jAQi+wTZZpUpwBj/0QsOzqegb3rGMMeJiSEu5xLHnYfBrRV4RH2+OCSOO95Is/7x1WJ4bw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "semver": "^7.5.3"
+      },
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/math-intrinsics": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/math-intrinsics/-/math-intrinsics-1.1.0.tgz",
@@ -5458,6 +5916,16 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/minipass": {
+      "version": "7.1.3",
+      "resolved": "https://registry.npmjs.org/minipass/-/minipass-7.1.3.tgz",
+      "integrity": "sha512-tEBHqDnIoM/1rXME1zgka9g6Q2lcoCkxHLuc7ODJ5BxbP5d4c2Z5cGgtXAku59200Cx7diuHTOYfSBD8n6mm8A==",
+      "dev": true,
+      "license": "BlueOak-1.0.0",
+      "engines": {
+        "node": ">=16 || 14 >=14.17"
+      }
+    },
     "node_modules/ms": {
       "version": "2.1.3",
       "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
@@ -5854,6 +6322,33 @@
       "license": "MIT",
       "peer": true
     },
+    "node_modules/path-scurry": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/path-scurry/-/path-scurry-2.0.2.tgz",
+      "integrity": "sha512-3O/iVVsJAPsOnpwWIeD+d6z/7PmqApyQePUtCndjatj/9I5LylHvt5qluFaBT3I5h3r1ejfR056c+FCv+NnNXg==",
+      "dev": true,
+      "license": "BlueOak-1.0.0",
+      "dependencies": {
+        "lru-cache": "^11.0.0",
+        "minipass": "^7.1.2"
+      },
+      "engines": {
+        "node": "18 || 20 || >=22"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
+    "node_modules/path-scurry/node_modules/lru-cache": {
+      "version": "11.5.2",
+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-11.5.2.tgz",
+      "integrity": "sha512-4pfM1Ff0x50o0tQwb5ucw/RzNyD0/YJME6IVcStalZuMWxdt3sR3huStTtxz4PUmvZfRguvDejasvQ2kifR11g==",
+      "dev": true,
+      "license": "BlueOak-1.0.0",
+      "engines": {
+        "node": "20 || >=22"
+      }
+    },
     "node_modules/picocolors": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.1.1.tgz",
@@ -6687,6 +7182,60 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/test-exclude": {
+      "version": "8.0.0",
+      "resolved": "https://registry.npmjs.org/test-exclude/-/test-exclude-8.0.0.tgz",
+      "integrity": "sha512-ZOffsNrXYggvU1mDGHk54I96r26P8SyMjO5slMKSc7+IWmtB/MQKnEC2fP51imB3/pT6YK5cT5E8f+Dd9KdyOQ==",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "@istanbuljs/schema": "^0.1.2",
+        "glob": "^13.0.6",
+        "minimatch": "^10.2.2"
+      },
+      "engines": {
+        "node": "20 || >=22"
+      }
+    },
+    "node_modules/test-exclude/node_modules/balanced-match": {
+      "version": "4.0.4",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-4.0.4.tgz",
+      "integrity": "sha512-BLrgEcRTwX2o6gGxGOCNyMvGSp35YofuYzw9h1IMTRmKqttAZZVU67bdb9Pr2vUHA8+j3i2tJfjO6C6+4myGTA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": "18 || 20 || >=22"
+      }
+    },
+    "node_modules/test-exclude/node_modules/brace-expansion": {
+      "version": "5.0.9",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-5.0.9.tgz",
+      "integrity": "sha512-ScQ4IuvIEF1TMlP7Zt+vjJ//9zlPb2SDcxWxM3bk8s6t6GGdJ7KO1dCcTidOPJKePW30LE/2cT7wCyPho9/Wxg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "balanced-match": "^4.0.2"
+      },
+      "engines": {
+        "node": "20 || >=22"
+      }
+    },
+    "node_modules/test-exclude/node_modules/minimatch": {
+      "version": "10.2.6",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-10.2.6.tgz",
+      "integrity": "sha512-vpLQEs+VLCr1nU0BXS07maYoFwlDAH0gngQuuttxIwutDFEMHq2blX+8vpgxDdK3J1PwjCJiep77OitTZ4Ll1A==",
+      "dev": true,
+      "license": "BlueOak-1.0.0",
+      "dependencies": {
+        "brace-expansion": "^5.0.8"
+      },
+      "engines": {
+        "node": "18 || 20 || >=22"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
     "node_modules/text-extensions": {
       "version": "2.4.0",
       "resolved": "https://registry.npmjs.org/text-extensions/-/text-extensions-2.4.0.tgz",
@@ -6769,9 +7318,9 @@
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     "node_modules/ts-loader": {
       "name": "@krutoo/ts-loader",
-      "version": "0.0.4",
-      "resolved": "https://registry.npmjs.org/@krutoo/ts-loader/-/ts-loader-0.0.4.tgz",
-      "integrity": "sha512-dz10pFstBPMNNkI7X2Zc7CDuN3az40sUG33wBfHic7EmI1G3APUjrHXah7+yBt2/S1X8NEWcGzuXcUhraXNhDw==",
+      "version": "0.0.5",
+      "resolved": "https://registry.npmjs.org/@krutoo/ts-loader/-/ts-loader-0.0.5.tgz",
+      "integrity": "sha512-V/1HprgfRS2Qe0oyRJrCo5vjrN0L3CCw4ml6VqVwvEC5tDXGptfxlFV3gGSFtT3ZC63EAH78gbGfD3x5ehlQiQ==",
       "dev": true,
       "license": "MIT",
       "peerDependencies": {
@@ -7018,6 +7567,21 @@
         "punycode": "^2.1.0"
       }
     },
+    "node_modules/v8-to-istanbul": {
+      "version": "9.3.0",
+      "resolved": "https://registry.npmjs.org/v8-to-istanbul/-/v8-to-istanbul-9.3.0.tgz",
+      "integrity": "sha512-kiGUalWN+rgBJ/1OHZsBtU4rXZOfj/7rKQxULKlIzwzQSvMJUUNgPwJEEh7gU6xEVxC0ahoOBvN2YI8GH6FNgA==",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "@jridgewell/trace-mapping": "^0.3.12",
+        "@types/istanbul-lib-coverage": "^2.0.1",
+        "convert-source-map": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=10.12.0"
+      }
+    },
     "node_modules/valibot": {
       "version": "1.4.2",
       "resolved": "https://registry.npmjs.org/valibot/-/valibot-1.4.2.tgz",
diff --git a/package.json b/package.json
index 4f99e2a..aa1a385 100644
--- a/package.json
+++ b/package.json
@@ -45,6 +45,7 @@
     "fmt": "prettier . --write",
     "lint": "eslint . && prettier . --check && ls-lint",
     "test": "node --import ts-loader --import ./scripts/setup-tests.ts ./scripts/test.ts",
+    "test:coverage": "c8 node --enable-source-maps --import ts-loader --import ./scripts/setup-tests.ts ./scripts/test.ts",
     "sync-exports": "node ./scripts/sync-exports.ts",
     "build": "node ./scripts/build.ts && npm run sync-exports",
     "commit": "better-commits",
@@ -63,6 +64,7 @@
     "@types/react": "^19.2.14",
     "@types/react-dom": "^19.2.3",
     "better-commits": "^1.17.0",
+    "c8": "^12.0.0",
     "eslint": "^9.35.0",
     "git-cliff": "^2.9.1",
     "globals": "^16.3.0",
@@ -71,7 +73,7 @@
     "react": "^19.1.0",
     "react-dom": "^19.1.0",
     "svgo": "^4.0.0",
-    "ts-loader": "npm:@krutoo/ts-loader@^0.0.4",
+    "ts-loader": "npm:@krutoo/ts-loader@^0.0.5",
     "typescript": "^5.9.3"
   },
   "peerDependencies": {