diff --git a/README.md b/README.md
index 31c05e5d..4df35cb9 100644
--- a/README.md
+++ b/README.md
@@ -57,6 +57,18 @@ To pack a specific directory:
 repopack path/to/directory
 ```
 
+To pack specific files or directories using glob patterns:
+
+```bash
+repopack --include "src/**/*.ts,**/*.md"
+```
+
+To exclude specific files or directories using .gitignore syntax:
+
+```bash
+repopack --ignore "*.log,tmp/"
+```
+
 Once you have generated the packed file, you can use it with Generative AI tools like Claude or ChatGPT.
 
 
@@ -172,6 +184,7 @@ Feel free to modify these prompts based on your specific needs and the capabilit
 
 - `-v, --version`: Show tool version
 - `-o, --output <file>`: Specify the output file name
+- `--include <patterns>`: List of include patterns (comma-separated)
 - `-i, --ignore <patterns>`: Additional ignore patterns (comma-separated)
 - `-c, --config <path>`: Path to a custom config file
 - `--style <style>`: Specify the output style (`plain` or `xml`)
@@ -203,9 +216,10 @@ Create a `repopack.config.json` file in your project root for custom configurati
 |`output.removeEmptyLines`| Whether to remove empty lines from the output | `false` |
 |`output.topFilesLength`| Number of top files to display in the summary. If set to 0, no summary will be displayed |`5`|
 |`output.showLineNumbers`| Whether to add line numbers to each line in the output |`false`|
+|`include`| Patterns of files to include (using glob syntax) |`[]`|
 |`ignore.useGitignore`| Whether to use patterns from the project's `.gitignore` file |`true`|
 |`ignore.useDefaultPatterns`| Whether to use default ignore patterns |`true`|
-|`ignore.customPatterns`| Additional patterns to ignore |`[]`|
+|`ignore.customPatterns`| Additional patterns to ignore (using .gitignore syntax) |`[]`|
 
 Example configuration:
 
@@ -219,6 +233,7 @@ Example configuration:
     "topFilesLength": 5,
     "showLineNumbers": false
   },
+  "include": ["**/*"],
   "ignore": {
     "useGitignore": true,
     "useDefaultPatterns": true,
@@ -227,7 +242,15 @@ Example configuration:
 }
 ```
 
-### Ignore Patterns
+### Include and Ignore
+#### Include Patterns
+Repopack now supports specifying files to include using glob patterns. This allows for more flexible and powerful file selection:
+
+- Use `**/*.js` to include all JavaScript files in any directory
+- Use `src/**/*` to include all files within the `src` directory and its subdirectories
+- Combine multiple patterns like `["src/**/*.js", "**/*.md"]` to include JavaScript files in `src` and all Markdown files
+
+#### Ignore Patterns
 Repopack offers multiple methods to set ignore patterns for excluding specific files or directories during the packing process:
 
 - **.gitignore**: By default, patterns listed in your project's `.gitignore` file are used. This behavior can be controlled with the `ignore.useGitignore` setting.
diff --git a/package-lock.json b/package-lock.json
index 186a6dcf..bf3c7c80 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -13,8 +13,8 @@
         "@secretlint/secretlint-rule-preset-recommend": "^8.2.4",
         "cli-spinners": "^2.9.2",
         "commander": "^11.1.0",
+        "globby": "^14.0.2",
         "iconv-lite": "^0.6.3",
-        "ignore": "^5.2.0",
         "istextorbinary": "^9.5.0",
         "jschardet": "^3.1.3",
         "log-update": "^6.1.0",
@@ -41,7 +41,6 @@
         "rimraf": "^6.0.1",
         "secretlint": "^8.2.4",
         "typescript": "^5.5.4",
-        "vite": "^5.3.5",
         "vitest": "^2.0.4"
       },
       "engines": {
@@ -813,7 +812,6 @@
       "version": "2.1.5",
       "resolved": "https://registry.npmjs.org/@nodelib/fs.scandir/-/fs.scandir-2.1.5.tgz",
       "integrity": "sha512-vq24Bq3ym5HEQm2NKCr3yXDwjc7vTsEThRDnkp2DK9p1uqLR+DHurm/NOTo0KG7HYHU7eppKZj3MyqYuMBf62g==",
-      "dev": true,
       "dependencies": {
         "@nodelib/fs.stat": "2.0.5",
         "run-parallel": "^1.1.9"
@@ -826,7 +824,6 @@
       "version": "2.0.5",
       "resolved": "https://registry.npmjs.org/@nodelib/fs.stat/-/fs.stat-2.0.5.tgz",
       "integrity": "sha512-RkhPPp2zrqDAQA/2jNhnztcPAlv64XdhIp7a7454A5ovI7Bukxgt7MX7udwAu3zg1DcpPU0rz3VV1SeaqvY4+A==",
-      "dev": true,
       "engines": {
         "node": ">= 8"
       }
@@ -835,7 +832,6 @@
       "version": "1.2.8",
       "resolved": "https://registry.npmjs.org/@nodelib/fs.walk/-/fs.walk-1.2.8.tgz",
       "integrity": "sha512-oGB+UxlgWcgQkgwo8GcEGwemoTFt3FIO9ababBmaGwXIoBKZ+GTy0pP185beGg7Llih/NSHSV2XAs1lnznocSg==",
-      "dev": true,
       "dependencies": {
         "@nodelib/fs.scandir": "2.1.5",
         "fastq": "^1.6.0"
@@ -1280,7 +1276,6 @@
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/@sindresorhus/merge-streams/-/merge-streams-2.3.0.tgz",
       "integrity": "sha512-LtoMMhxAlorcGhmFYI+LhPgbPZCkgP6ra1YL604EeF6U98pLlQ3iWIGMdWSC+vWmPBWBNgmDBAhnAobLROJmwg==",
-      "dev": true,
       "engines": {
         "node": ">=18"
       },
@@ -1618,6 +1613,35 @@
         }
       }
     },
+    "node_modules/@typescript-eslint/typescript-estree/node_modules/globby": {
+      "version": "11.1.0",
+      "resolved": "https://registry.npmjs.org/globby/-/globby-11.1.0.tgz",
+      "integrity": "sha512-jhIXaOzy1sb8IyocaruWSn1TjmnBVs8Ayhcy83rmxNJ8q2uWKCAj3CnJY+KpGSXCueAPc0i05kVvVKtP1t9S3g==",
+      "dev": true,
+      "dependencies": {
+        "array-union": "^2.1.0",
+        "dir-glob": "^3.0.1",
+        "fast-glob": "^3.2.9",
+        "ignore": "^5.2.0",
+        "merge2": "^1.4.1",
+        "slash": "^3.0.0"
+      },
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/@typescript-eslint/typescript-estree/node_modules/slash": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/slash/-/slash-3.0.0.tgz",
+      "integrity": "sha512-g9Q1haeby36OSStwb4ntCGGGaKsaVSjQ68fBxoQcutl5fS1vuY18H3wSt3jFyFtrkx+Kz0V1G85A4MyAdDMi2Q==",
+      "dev": true,
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/@typescript-eslint/utils": {
       "version": "7.17.0",
       "resolved": "https://registry.npmjs.org/@typescript-eslint/utils/-/utils-7.17.0.tgz",
@@ -2056,7 +2080,6 @@
       "version": "3.0.3",
       "resolved": "https://registry.npmjs.org/braces/-/braces-3.0.3.tgz",
       "integrity": "sha512-yQbXgO/OSZVD2IsiLlro+7Hf6Q18EJrKSEsdoMzKePKXct3gvD8oLcOQdIzGupr5Fj+EDe8gO/lxc1BzfMpxvA==",
-      "dev": true,
       "dependencies": {
         "fill-range": "^7.1.1"
       },
@@ -2365,6 +2388,15 @@
         "node": ">=8"
       }
     },
+    "node_modules/dir-glob/node_modules/path-type": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/path-type/-/path-type-4.0.0.tgz",
+      "integrity": "sha512-gDKb8aZMDeD/tZWs9P6+q0J9Mwkdl6xMV8TjnGP3qJVJ06bdMgkbBlLU8IdfOsIsFz2BW1rNVT3XuNEl8zPAvw==",
+      "dev": true,
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/doctrine": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/doctrine/-/doctrine-3.0.0.tgz",
@@ -3032,7 +3064,6 @@
       "version": "3.3.2",
       "resolved": "https://registry.npmjs.org/fast-glob/-/fast-glob-3.3.2.tgz",
       "integrity": "sha512-oX2ruAFQwf/Orj8m737Y5adxDQO0LAB7/S5MnxCdTNDd4p6BsyIVsv9JQsATbTSq8KHRpLwIHbVlUNatxd+1Ow==",
-      "dev": true,
       "dependencies": {
         "@nodelib/fs.stat": "^2.0.2",
         "@nodelib/fs.walk": "^1.2.3",
@@ -3048,7 +3079,6 @@
       "version": "5.1.2",
       "resolved": "https://registry.npmjs.org/glob-parent/-/glob-parent-5.1.2.tgz",
       "integrity": "sha512-AOIgSQCepiJYwP3ARnGx+5VnTu2HBYdzbGP45eLw1vr3zB3vZLeyed1sC9hnbcOc9/SrMyM5RPQrkGz4aS9Zow==",
-      "dev": true,
       "dependencies": {
         "is-glob": "^4.0.1"
       },
@@ -3078,7 +3108,6 @@
       "version": "1.17.1",
       "resolved": "https://registry.npmjs.org/fastq/-/fastq-1.17.1.tgz",
       "integrity": "sha512-sRVD3lWVIXWg6By68ZN7vho9a1pQcN/WBFaAAsDDFzlJjvoGx0P8z7V1t72grFJfJhu3YPZBuu25f7Kaw2jN1w==",
-      "dev": true,
       "dependencies": {
         "reusify": "^1.0.4"
       }
@@ -3099,7 +3128,6 @@
       "version": "7.1.1",
       "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-7.1.1.tgz",
       "integrity": "sha512-YsGpe3WHLK8ZYi4tWDg2Jy3ebRz2rXowDxnld4bkQB00cc/1Zw9AWnC0i9ztDJitivtQvaI9KaLyKrc+hBW0yg==",
-      "dev": true,
       "dependencies": {
         "to-regex-range": "^5.0.1"
       },
@@ -3415,20 +3443,19 @@
       }
     },
     "node_modules/globby": {
-      "version": "11.1.0",
-      "resolved": "https://registry.npmjs.org/globby/-/globby-11.1.0.tgz",
-      "integrity": "sha512-jhIXaOzy1sb8IyocaruWSn1TjmnBVs8Ayhcy83rmxNJ8q2uWKCAj3CnJY+KpGSXCueAPc0i05kVvVKtP1t9S3g==",
-      "dev": true,
+      "version": "14.0.2",
+      "resolved": "https://registry.npmjs.org/globby/-/globby-14.0.2.tgz",
+      "integrity": "sha512-s3Fq41ZVh7vbbe2PN3nrW7yC7U7MFVc5c98/iTl9c2GawNMKx/J648KQRW6WKkuU8GIbbh2IXfIRQjOZnXcTnw==",
       "dependencies": {
-        "array-union": "^2.1.0",
-        "dir-glob": "^3.0.1",
-        "fast-glob": "^3.2.9",
-        "ignore": "^5.2.0",
-        "merge2": "^1.4.1",
-        "slash": "^3.0.0"
+        "@sindresorhus/merge-streams": "^2.1.0",
+        "fast-glob": "^3.3.2",
+        "ignore": "^5.2.4",
+        "path-type": "^5.0.0",
+        "slash": "^5.1.0",
+        "unicorn-magic": "^0.1.0"
       },
       "engines": {
-        "node": ">=10"
+        "node": ">=18"
       },
       "funding": {
         "url": "https://github.com/sponsors/sindresorhus"
@@ -3755,7 +3782,6 @@
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/is-extglob/-/is-extglob-2.1.1.tgz",
       "integrity": "sha512-SbKbANkN603Vi4jEZv49LeVJMn4yGwsbzZworEoyEiutsN3nJYdbO36zfhGJ6QEDpOZIFkDtnq5JRxmvl3jsoQ==",
-      "dev": true,
       "engines": {
         "node": ">=0.10.0"
       }
@@ -3779,7 +3805,6 @@
       "version": "4.0.3",
       "resolved": "https://registry.npmjs.org/is-glob/-/is-glob-4.0.3.tgz",
       "integrity": "sha512-xelSayHH36ZgE7ZWhli7pW34hNbNl8Ojv5KVmkJD4hBdD3th8Tfk9vYasLM+mXWOZhFkgZfxhLSnrwRr4elSSg==",
-      "dev": true,
       "dependencies": {
         "is-extglob": "^2.1.1"
       },
@@ -3803,7 +3828,6 @@
       "version": "7.0.0",
       "resolved": "https://registry.npmjs.org/is-number/-/is-number-7.0.0.tgz",
       "integrity": "sha512-41Cifkg6e8TylSpdtTpeLVMqvSBEVzTttHvERD741+pnZ8ANv0004MRL43QKPDlK9cGvNp6NZWZUBlbGXYxxng==",
-      "dev": true,
       "engines": {
         "node": ">=0.12.0"
       }
@@ -4275,7 +4299,6 @@
       "version": "1.4.1",
       "resolved": "https://registry.npmjs.org/merge2/-/merge2-1.4.1.tgz",
       "integrity": "sha512-8q7VEgMJW4J8tcfVPy8g09NcQwZdbwFEqhe/WZkoIzjn/3TGDwtOCYtXGxA3O8tPzpczCCDgv+P2P5y00ZJOOg==",
-      "dev": true,
       "engines": {
         "node": ">= 8"
       }
@@ -4284,7 +4307,6 @@
       "version": "4.0.7",
       "resolved": "https://registry.npmjs.org/micromatch/-/micromatch-4.0.7.tgz",
       "integrity": "sha512-LPP/3KorzCwBxfeUuZmaR6bG2kdeHSbe0P2tY3FLRU4vYrjYz5hI4QZwV0njUx3jeuKe67YukQ1LSPZBKDqO/Q==",
-      "dev": true,
       "dependencies": {
         "braces": "^3.0.3",
         "picomatch": "^2.3.1"
@@ -4704,12 +4726,14 @@
       }
     },
     "node_modules/path-type": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/path-type/-/path-type-4.0.0.tgz",
-      "integrity": "sha512-gDKb8aZMDeD/tZWs9P6+q0J9Mwkdl6xMV8TjnGP3qJVJ06bdMgkbBlLU8IdfOsIsFz2BW1rNVT3XuNEl8zPAvw==",
-      "dev": true,
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/path-type/-/path-type-5.0.0.tgz",
+      "integrity": "sha512-5HviZNaZcfqP95rwpv+1HDgUamezbqdSYTyzjTvwtJSnIH+3vnbmWsItli8OFEndS984VT55M3jduxZbX351gg==",
       "engines": {
-        "node": ">=8"
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
       }
     },
     "node_modules/pathe": {
@@ -4736,7 +4760,6 @@
       "version": "2.3.1",
       "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.3.1.tgz",
       "integrity": "sha512-JU3teHTNjmE2VCGFzuY8EXzCDVwEqB2a8fsIvwaStHhAWJEeVd1o1QD80CU6+ZdEXXSLbSsuLwJjkCBWqRQUVA==",
-      "dev": true,
       "engines": {
         "node": ">=8.6"
       },
@@ -4840,7 +4863,6 @@
       "version": "1.2.3",
       "resolved": "https://registry.npmjs.org/queue-microtask/-/queue-microtask-1.2.3.tgz",
       "integrity": "sha512-NuaNSa6flKT5JaSYQzJok04JzTL1CA6aGhv5rfLW3PgqA+M2ChpZQnAC8h8i4ZFkBS8X5RqkDBHA7r4hej3K9A==",
-      "dev": true,
       "funding": [
         {
           "type": "github",
@@ -4996,7 +5018,6 @@
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/reusify/-/reusify-1.0.4.tgz",
       "integrity": "sha512-U9nH88a3fc/ekCF1l0/UP1IosiuIjyTh7hBvXVMHYgVcfGvt897Xguj2UOLDeI5BG2m7/uwyaLVT6fbtCwTyzw==",
-      "dev": true,
       "engines": {
         "iojs": ">=1.0.0",
         "node": ">=0.10.0"
@@ -5141,7 +5162,6 @@
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/run-parallel/-/run-parallel-1.2.0.tgz",
       "integrity": "sha512-5l4VyZR86LZ/lDxZTR6jqL8AFE2S0IFLMP26AbjsLVADxHdhB/c0GUsH+y39UfCi3dzz8OlQuPmnaJOMoDHQBA==",
-      "dev": true,
       "funding": [
         {
           "type": "github",
@@ -5222,50 +5242,6 @@
         "node": "^14.13.1 || >=16.0.0"
       }
     },
-    "node_modules/secretlint/node_modules/globby": {
-      "version": "14.0.2",
-      "resolved": "https://registry.npmjs.org/globby/-/globby-14.0.2.tgz",
-      "integrity": "sha512-s3Fq41ZVh7vbbe2PN3nrW7yC7U7MFVc5c98/iTl9c2GawNMKx/J648KQRW6WKkuU8GIbbh2IXfIRQjOZnXcTnw==",
-      "dev": true,
-      "dependencies": {
-        "@sindresorhus/merge-streams": "^2.1.0",
-        "fast-glob": "^3.3.2",
-        "ignore": "^5.2.4",
-        "path-type": "^5.0.0",
-        "slash": "^5.1.0",
-        "unicorn-magic": "^0.1.0"
-      },
-      "engines": {
-        "node": ">=18"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/sindresorhus"
-      }
-    },
-    "node_modules/secretlint/node_modules/path-type": {
-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/path-type/-/path-type-5.0.0.tgz",
-      "integrity": "sha512-5HviZNaZcfqP95rwpv+1HDgUamezbqdSYTyzjTvwtJSnIH+3vnbmWsItli8OFEndS984VT55M3jduxZbX351gg==",
-      "dev": true,
-      "engines": {
-        "node": ">=12"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/sindresorhus"
-      }
-    },
-    "node_modules/secretlint/node_modules/slash": {
-      "version": "5.1.0",
-      "resolved": "https://registry.npmjs.org/slash/-/slash-5.1.0.tgz",
-      "integrity": "sha512-ZA6oR3T/pEyuqwMgAKT0/hAv8oAXckzbkmR0UkUosQ+Mc4RxGoJkRmwHgHufaenlyAgE1Mxgpdcrf75y6XcnDg==",
-      "dev": true,
-      "engines": {
-        "node": ">=14.16"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/sindresorhus"
-      }
-    },
     "node_modules/semver": {
       "version": "7.6.2",
       "resolved": "https://registry.npmjs.org/semver/-/semver-7.6.2.tgz",
@@ -5367,12 +5343,14 @@
       }
     },
     "node_modules/slash": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/slash/-/slash-3.0.0.tgz",
-      "integrity": "sha512-g9Q1haeby36OSStwb4ntCGGGaKsaVSjQ68fBxoQcutl5fS1vuY18H3wSt3jFyFtrkx+Kz0V1G85A4MyAdDMi2Q==",
-      "dev": true,
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/slash/-/slash-5.1.0.tgz",
+      "integrity": "sha512-ZA6oR3T/pEyuqwMgAKT0/hAv8oAXckzbkmR0UkUosQ+Mc4RxGoJkRmwHgHufaenlyAgE1Mxgpdcrf75y6XcnDg==",
       "engines": {
-        "node": ">=8"
+        "node": ">=14.16"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
       }
     },
     "node_modules/slice-ansi": {
@@ -5943,7 +5921,6 @@
       "version": "5.0.1",
       "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
       "integrity": "sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==",
-      "dev": true,
       "dependencies": {
         "is-number": "^7.0.0"
       },
@@ -6123,7 +6100,6 @@
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/unicorn-magic/-/unicorn-magic-0.1.0.tgz",
       "integrity": "sha512-lRfVq8fE8gz6QMBuDM6a+LO3IAzTi05H6gCVaUpir2E1Rwpo4ZUog45KpNXKC/Mn3Yb9UDuHumeFTo9iV/D9FQ==",
-      "dev": true,
       "engines": {
         "node": ">=18"
       },
diff --git a/package.json b/package.json
index 79a3a024..0de339f5 100644
--- a/package.json
+++ b/package.json
@@ -53,8 +53,8 @@
     "@secretlint/secretlint-rule-preset-recommend": "^8.2.4",
     "cli-spinners": "^2.9.2",
     "commander": "^11.1.0",
+    "globby": "^14.0.2",
     "iconv-lite": "^0.6.3",
-    "ignore": "^5.2.0",
     "istextorbinary": "^9.5.0",
     "jschardet": "^3.1.3",
     "log-update": "^6.1.0",
@@ -78,7 +78,6 @@
     "rimraf": "^6.0.1",
     "secretlint": "^8.2.4",
     "typescript": "^5.5.4",
-    "vite": "^5.3.5",
     "vitest": "^2.0.4"
   },
   "engines": {
diff --git a/repopack.config.json b/repopack.config.json
index 1feced1d..053b5f0c 100644
--- a/repopack.config.json
+++ b/repopack.config.json
@@ -8,10 +8,10 @@
     "topFilesLength": 5,
     "showLineNumbers": false
   },
+  "includeFiles": [],
   "ignore": {
     "useGitignore": true,
     "useDefaultPatterns": true,
     "customPatterns": []
-  },
-  "includeFiles": []
+  }
 }
diff --git a/src/cli/index.ts b/src/cli/index.ts
index 412d37f4..b58570a4 100644
--- a/src/cli/index.ts
+++ b/src/cli/index.ts
@@ -1,7 +1,12 @@
 import { program, OptionValues } from 'commander';
 import path from 'node:path';
 import { pack } from '../core/packager.js';
-import { RepopackConfigCli, RepopackConfigFile, RepopackConfigMerged, RepopackOutputStyle } from '../types/index.js';
+import {
+  RepopackConfigCli,
+  RepopackConfigFile,
+  RepopackConfigMerged,
+  RepopackOutputStyle,
+} from '../config/configTypes.js';
 import { loadFileConfig, mergeConfigs } from '../config/configLoader.js';
 import { logger } from '../utils/logger.js';
 import { getVersion } from '../utils/packageJsonUtils.js';
@@ -14,13 +19,13 @@ import process from 'node:process';
 interface CliOptions extends OptionValues {
   version?: boolean;
   output?: string;
+  include?: string;
   ignore?: string;
   config?: string;
   verbose?: boolean;
   topFilesLen?: number;
   outputShowLineNumbers?: boolean;
   style?: RepopackOutputStyle;
-  include?: string[];
 }
 
 async function executeAction(directory: string, rootDir: string, options: CliOptions) {
@@ -43,6 +48,9 @@ async function executeAction(directory: string, rootDir: string, options: CliOpt
   if (options.output) {
     cliConfig.output = { filePath: options.output };
   }
+  if (options.include) {
+    cliConfig.include = options.include.split(',');
+  }
   if (options.ignore) {
     cliConfig.ignore = { customPatterns: options.ignore.split(',') };
   }
@@ -55,9 +63,6 @@ async function executeAction(directory: string, rootDir: string, options: CliOpt
   if (options.style) {
     cliConfig.output = { ...cliConfig.output, style: options.style.toLowerCase() as RepopackOutputStyle };
   }
-  if (options.include) {
-    cliConfig.include = options.include;
-  }
   logger.trace('CLI config:', cliConfig);
 
   const config: RepopackConfigMerged = mergeConfigs(fileConfig, cliConfig);
@@ -111,7 +116,7 @@ export async function run() {
       .arguments('[directory]')
       .option('-v, --version', 'show version information')
       .option('-o, --output <file>', 'specify the output file name')
-      .option('--include <files...>', 'space-separated list of files to include')
+      .option('--include <patterns>', 'list of include patterns (comma-separated)')
       .option('-i, --ignore <patterns>', 'additional ignore patterns (comma-separated)')
       .option('-c, --config <path>', 'path to a custom config file')
       .option('--top-files-len <number>', 'specify the number of top files to display', parseInt)
diff --git a/src/config/configLoader.ts b/src/config/configLoader.ts
index 1d339bdf..928c6049 100644
--- a/src/config/configLoader.ts
+++ b/src/config/configLoader.ts
@@ -1,5 +1,5 @@
 import path from 'node:path';
-import { RepopackConfigCli as RepopackConfigCli, RepopackConfigFile, RepopackConfigMerged } from '../types/index.js';
+import { RepopackConfigCli as RepopackConfigCli, RepopackConfigFile, RepopackConfigMerged } from './configTypes.js';
 import { defaultConfig } from './defaultConfig.js';
 import { logger } from '../utils/logger.js';
 import * as fs from 'node:fs/promises';
@@ -70,10 +70,6 @@ export function mergeConfigs(fileConfig: RepopackConfigFile, cliConfig: Repopack
         ...(cliConfig.ignore?.customPatterns || []),
       ],
     },
-    include: [
-      ...(defaultConfig.include || []),
-      ...(fileConfig.include || []),
-      ...(cliConfig.include || []),  
-    ],
+    include: [...(defaultConfig.include || []), ...(fileConfig.include || []), ...(cliConfig.include || [])],
   };
-}
\ No newline at end of file
+}
diff --git a/src/types/index.ts b/src/config/configTypes.ts
similarity index 51%
rename from src/types/index.ts
rename to src/config/configTypes.ts
index 410b09e8..d5773593 100644
--- a/src/types/index.ts
+++ b/src/config/configTypes.ts
@@ -10,12 +10,12 @@ interface RepopackConfigBase {
     topFilesLength?: number;
     showLineNumbers?: boolean;
   };
+  include?: string[];
   ignore?: {
     useGitignore?: boolean;
     useDefaultPatterns?: boolean;
     customPatterns?: string[];
   };
-  include?: string[];
 }
 
 export type RepopackConfigDefault = RepopackConfigBase & {
@@ -28,48 +28,16 @@ export type RepopackConfigDefault = RepopackConfigBase & {
     topFilesLength: number;
     showLineNumbers: boolean;
   };
+  include: string[];
   ignore: {
     useGitignore: boolean;
     useDefaultPatterns: boolean;
     customPatterns?: string[];
   };
-  include: string[];
 };
 
-export type RepopackConfigFile = RepopackConfigBase & {
-  output?: {
-    filePath?: string;
-    style?: RepopackOutputStyle;
-    headerText?: string;
-    removeComments?: boolean;
-    removeEmptyLines?: boolean;
-    topFilesLength?: number;
-    showLineNumbers?: boolean;
-  };
-  ignore?: {
-    useGitignore?: boolean;
-    useDefaultPatterns?: boolean;
-    customPatterns?: string[];
-  };
-  include?: string[];
-};
+export type RepopackConfigFile = RepopackConfigBase;
 
-export type RepopackConfigCli = RepopackConfigBase & {
-  output?: {
-    filePath?: string;
-    style?: RepopackOutputStyle;
-    headerText?: string;
-    removeComments?: boolean;
-    removeEmptyLines?: boolean;
-    topFilesLength?: number;
-    showLineNumbers?: boolean;
-  };
-  ignore?: {
-    useGitignore?: boolean;
-    useDefaultPatterns?: boolean;
-    customPatterns?: string[];
-  };
-  include?: string[];
-};
+export type RepopackConfigCli = RepopackConfigBase;
 
-export type RepopackConfigMerged = RepopackConfigDefault & RepopackConfigFile & RepopackConfigCli;
\ No newline at end of file
+export type RepopackConfigMerged = RepopackConfigDefault & RepopackConfigFile & RepopackConfigCli;
diff --git a/src/config/configValidator.ts b/src/config/configValidator.ts
index 0efe634c..1e3f8af4 100644
--- a/src/config/configValidator.ts
+++ b/src/config/configValidator.ts
@@ -1,4 +1,4 @@
-import { RepopackConfigFile } from '../types/index.js';
+import { RepopackConfigFile } from './configTypes.js';
 import { RepopackError } from '../utils/errorHandler.js';
 
 export class RepopackConfigValidationError extends RepopackError {
diff --git a/src/config/defaultConfig.ts b/src/config/defaultConfig.ts
index 95798875..c27e60b0 100644
--- a/src/config/defaultConfig.ts
+++ b/src/config/defaultConfig.ts
@@ -1,4 +1,4 @@
-import { RepopackConfigDefault } from '../types/index.js';
+import { RepopackConfigDefault } from './configTypes.js';
 
 export const defaultConfig: RepopackConfigDefault = {
   output: {
@@ -9,10 +9,10 @@ export const defaultConfig: RepopackConfigDefault = {
     topFilesLength: 5,
     showLineNumbers: false,
   },
+  include: [],
   ignore: {
     useGitignore: true,
     useDefaultPatterns: true,
     customPatterns: [],
   },
-  include: [],
-};
\ No newline at end of file
+};
diff --git a/src/core/outputGenerator.ts b/src/core/outputGenerator.ts
index 0bb8259d..fe13c9ac 100644
--- a/src/core/outputGenerator.ts
+++ b/src/core/outputGenerator.ts
@@ -1,4 +1,4 @@
-import { RepopackConfigMerged } from '../types/index.js';
+import { RepopackConfigMerged } from '../config/configTypes.js';
 import { SanitizedFile } from '../utils/fileHandler.js';
 import * as fs from 'node:fs/promises';
 import path from 'node:path';
diff --git a/src/core/packager.ts b/src/core/packager.ts
index c0b2ace9..9a7dfd5f 100644
--- a/src/core/packager.ts
+++ b/src/core/packager.ts
@@ -1,22 +1,13 @@
 import * as fs from 'node:fs/promises';
 import path from 'node:path';
 import type { SecretLintCoreResult } from '@secretlint/types';
-import { RepopackConfigMerged } from '../types/index.js';
+import { RepopackConfigMerged } from '../config/configTypes.js';
 import { sanitizeFiles as defaultSanitizeFiles } from '../utils/fileHandler.js';
-import {
-  getAllIgnorePatterns as defaultGetAllIgnorePatterns,
-  createIgnoreFilter as defaultCreateIgnoreFilter,
-  IgnoreFilter,
-} from '../utils/ignoreUtils.js';
 import { generateOutput as defaultGenerateOutput } from './outputGenerator.js';
 import { checkFileWithSecretLint, createSecretLintConfig } from '../utils/secretLintUtils.js';
-import { logger } from '../utils/logger.js';
-import { filterIncludedFiles } from '../utils/includeUtils.js';
-
+import { filterFiles } from '../utils/filterUtils.js';
 
 export interface Dependencies {
-  getAllIgnorePatterns: typeof defaultGetAllIgnorePatterns;
-  createIgnoreFilter: typeof defaultCreateIgnoreFilter;
   generateOutput: typeof defaultGenerateOutput;
   sanitizeFiles: typeof defaultSanitizeFiles;
 }
@@ -32,28 +23,16 @@ export async function pack(
   rootDir: string,
   config: RepopackConfigMerged,
   deps: Dependencies = {
-    getAllIgnorePatterns: defaultGetAllIgnorePatterns,
-    createIgnoreFilter: defaultCreateIgnoreFilter,
     generateOutput: defaultGenerateOutput,
     sanitizeFiles: defaultSanitizeFiles,
   },
 ): Promise<PackResult> {
-  // Get ignore patterns
-  const ignorePatterns = await deps.getAllIgnorePatterns(rootDir, config);
-  const ignoreFilter = deps.createIgnoreFilter(ignorePatterns);
-
-  // Get all file paths in the directory
-  const allFilePaths = await getFilePaths(rootDir, '', ignoreFilter, config);
-  const filteredPaths = filterIncludedFiles(rootDir, allFilePaths, config.include);
-
-  // Use filteredPaths if not empty, otherwise use filePaths
-  const pathsToProcess = filteredPaths.length > 0 ? filteredPaths : allFilePaths;
-
-  // Perform security check
-  const suspiciousFilesResults = await performSecurityCheck(pathsToProcess, rootDir);
+  // Get all file paths that should be processed
+  const filteredPaths = await filterFiles(rootDir, config);
 
-  // Filter out suspicious files
-  const safeFilePaths = allFilePaths.filter(
+  // Perform security check and filter out suspicious files
+  const suspiciousFilesResults = await performSecurityCheck(filteredPaths, rootDir);
+  const safeFilePaths = filteredPaths.filter(
     (filePath) => !suspiciousFilesResults.some((result) => result.filePath === path.join(rootDir, filePath)),
   );
 
@@ -77,41 +56,6 @@ export async function pack(
   };
 }
 
-async function getFilePaths(
-  dir: string,
-  relativePath: string,
-  ignoreFilter: IgnoreFilter,
-  config: RepopackConfigMerged,
-): Promise<string[]> {
-  const entries = await fs.readdir(dir, { withFileTypes: true });
-  const filePaths: string[] = [];
-
-  for (const entry of entries) {
-    const entryRelativePath = path.join(relativePath, entry.name);
-
-    // Skip the repopack output file
-    if (path.join(dir, entryRelativePath) === config.output.filePath) {
-      logger.trace(`Skipping output file: ${entryRelativePath}`);
-      continue;
-    }
-
-    if (!ignoreFilter(entryRelativePath)) {
-      logger.trace(`Ignoring file: ${entryRelativePath}`);
-      continue;
-    }
-
-    if (entry.isDirectory()) {
-      const subDirPaths = await getFilePaths(path.join(dir, entry.name), entryRelativePath, ignoreFilter, config);
-      filePaths.push(...subDirPaths);
-    } else {
-      logger.trace(`Adding file: ${entryRelativePath}`);
-      filePaths.push(entryRelativePath);
-    }
-  }
-
-  return filePaths;
-}
-
 async function performSecurityCheck(filePaths: string[], rootDir: string): Promise<SecretLintCoreResult[]> {
   const secretLintConfig = createSecretLintConfig();
   const suspiciousFilesResults: SecretLintCoreResult[] = [];
diff --git a/src/index.ts b/src/index.ts
index 613bf254..85edf910 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,3 +1,3 @@
 export { pack } from './core/packager.js';
-export type { RepopackConfigFile as RepopackConfig } from './types/index.js';
+export type { RepopackConfigFile as RepopackConfig } from './config/configTypes.js';
 export { run as cli } from './cli/index.js';
diff --git a/src/utils/fileHandler.ts b/src/utils/fileHandler.ts
index b880a66a..c771aec4 100644
--- a/src/utils/fileHandler.ts
+++ b/src/utils/fileHandler.ts
@@ -3,7 +3,7 @@ import path from 'node:path';
 import { isBinary } from 'istextorbinary';
 import jschardet from 'jschardet';
 import iconv from 'iconv-lite';
-import { RepopackConfigMerged } from '../types/index.js';
+import { RepopackConfigMerged } from '../config/configTypes.js';
 import { getFileManipulator } from './fileManipulator.js';
 import { logger } from './logger.js';
 
diff --git a/src/utils/ignoreUtils.ts b/src/utils/filterUtils.ts
similarity index 56%
rename from src/utils/ignoreUtils.ts
rename to src/utils/filterUtils.ts
index 1db6f61e..cba9f01a 100644
--- a/src/utils/ignoreUtils.ts
+++ b/src/utils/filterUtils.ts
@@ -1,18 +1,35 @@
-import * as fs from 'node:fs/promises';
-import path from 'node:path';
-import ignore from 'ignore';
+import path from 'path';
+import { globby } from 'globby';
 import { logger } from './logger.js';
-import { RepopackConfigMerged } from '../types/index.js';
+import type { RepopackConfigMerged } from '../config/configTypes.js';
+import * as fs from 'node:fs/promises';
 import { defaultIgnoreList } from './defaultIgnore.js';
 
-export async function getIgnorePatterns(filename: string, rootDir: string, fsModule = fs): Promise<string[]> {
-  const ignorePath = path.join(rootDir, filename);
+export async function filterFiles(rootDir: string, config: RepopackConfigMerged): Promise<string[]> {
+  const includePatterns = config.include.length > 0 ? config.include : ['**/*'];
+
+  const ignorePatterns = await getAllIgnorePatterns(rootDir, config);
+
+  logger.trace('Include patterns:', includePatterns);
+  logger.trace('Ignore patterns:', ignorePatterns);
+
   try {
-    const ignoreContent = await fsModule.readFile(ignorePath, 'utf-8');
-    return parseIgnoreContent(ignoreContent);
+    const filePaths = await globby(includePatterns, {
+      cwd: rootDir,
+      ignore: ignorePatterns,
+      // Ignore option is in accordance with .gitignore rules
+      gitignore: true,
+      dot: true,
+      onlyFiles: true,
+      followSymbolicLinks: false,
+      absolute: false,
+    });
+
+    logger.trace(`Filtered ${filePaths.length} files`);
+    return filePaths;
   } catch (error) {
-    logger.debug(`No ${filename} file found or unable to read it.`);
-    return [];
+    logger.error('Error filtering files:', error);
+    throw new Error('Failed to filter files');
   }
 }
 
@@ -23,28 +40,36 @@ export function parseIgnoreContent(content: string): string[] {
     .filter((line) => line && !line.startsWith('#'));
 }
 
-export type IgnoreFilter = (path: string) => boolean;
-
-export function createIgnoreFilter(patterns: string[]): IgnoreFilter {
-  const ig = ignore.default().add(patterns);
-  return ig.createFilter();
+export async function getIgnorePatterns(filename: string, rootDir: string, fsModule = fs): Promise<string[]> {
+  const ignorePath = path.join(rootDir, filename);
+  try {
+    const ignoreContent = await fsModule.readFile(ignorePath, 'utf-8');
+    return parseIgnoreContent(ignoreContent);
+  } catch (error) {
+    logger.debug(`No ${filename} file found or unable to read it.`);
+    return [];
+  }
 }
 
 export async function getAllIgnorePatterns(rootDir: string, config: RepopackConfigMerged): Promise<string[]> {
   let ignorePatterns: string[] = [];
 
+  // Add default ignore patterns
   if (config.ignore.useDefaultPatterns) {
     ignorePatterns = [...ignorePatterns, ...defaultIgnoreList];
   }
 
+  // Add .gitignore patterns
   const gitignorePatterns = await getIgnorePatterns('.gitignore', rootDir);
   if (config.ignore.useGitignore) {
     ignorePatterns = [...ignorePatterns, ...gitignorePatterns];
   }
 
+  // Add .repopackignore patterns
   const repopackIgnorePatterns = await getIgnorePatterns('.repopackignore', rootDir);
   ignorePatterns = [...ignorePatterns, ...repopackIgnorePatterns];
 
+  // Add custom ignore patterns
   if (config.ignore.customPatterns) {
     ignorePatterns = [...ignorePatterns, ...config.ignore.customPatterns];
   }
diff --git a/src/utils/includeUtils.ts b/src/utils/includeUtils.ts
deleted file mode 100644
index dcccb6cd..00000000
--- a/src/utils/includeUtils.ts
+++ /dev/null
@@ -1,29 +0,0 @@
-import path from 'path';
-import { logger } from '../utils/logger.js';
-
-export function filterIncludedFiles(rootDir: string, filePaths: string[], include: string[]): string[] {
-  if (include.length === 0) {
-    return filePaths;
-  }
-
-  // Normalize paths to handle case insensitivity and different representations
-  const normalizePath = (p: string) => path.normalize(path.resolve(rootDir, p)).toLowerCase();
-
-  // Create a Set of normalized absolute paths for the included files
-  const includeSet = new Set(include.map(normalizePath));
-
-  // Map file paths to their normalized absolute paths and filter those that are in the include set
-  const filteredAbsolutePaths = filePaths
-    .map(filePath => path.resolve(rootDir, filePath))
-    .filter(absolutePath => includeSet.has(normalizePath(absolutePath)));
-
-  // Log any files in includeSet that are not found in filePaths
-  const absoluteFilePathsSet = new Set(filePaths.map(filePath => normalizePath(path.resolve(rootDir, filePath))));
-  const missingFiles = [...includeSet].filter(includedFile => !absoluteFilePathsSet.has(includedFile));
-  if (missingFiles.length > 0) {
-    logger.trace(`Included files not found: ${missingFiles.join(', ')}`);
-  }
-
-  // Convert filtered absolute paths back to relative paths
-  return filteredAbsolutePaths.map(filePath => path.relative(rootDir, filePath));
-}
\ No newline at end of file
diff --git a/tests/config/configLoader.test.ts b/tests/config/configLoader.test.ts
index 262b06ac..109aa411 100644
--- a/tests/config/configLoader.test.ts
+++ b/tests/config/configLoader.test.ts
@@ -1,6 +1,6 @@
 import { expect, test, describe, vi, beforeEach } from 'vitest';
 import { loadFileConfig, mergeConfigs } from '../../src/config/configLoader.js';
-import { RepopackConfigFile, RepopackConfigCli } from '../../src/types/index.js';
+import { RepopackConfigFile, RepopackConfigCli } from '../../src/config/configTypes.js';
 import * as fs from 'fs/promises';
 import { Stats } from 'fs';
 
diff --git a/tests/core/packager.test.ts b/tests/core/packager.test.ts
index 0f244b9e..a5436800 100644
--- a/tests/core/packager.test.ts
+++ b/tests/core/packager.test.ts
@@ -2,10 +2,11 @@ import { expect, test, vi, describe, beforeEach } from 'vitest';
 import { pack, Dependencies } from '../../src/core/packager.js';
 import path from 'path';
 import * as fs from 'fs/promises';
-import { Dirent } from 'fs';
 import { createMockConfig } from '../testing/testUtils.js';
+import { filterFiles } from '../../src/utils/filterUtils.js';
 
 vi.mock('fs/promises');
+vi.mock('../../src/utils/filterUtils');
 
 describe('packager', () => {
   let mockDeps: Dependencies;
@@ -14,35 +15,25 @@ describe('packager', () => {
     vi.resetAllMocks();
     const file2Path = path.join('dir1', 'file2.txt');
     mockDeps = {
-      getAllIgnorePatterns: vi.fn().mockResolvedValue([]),
-      createIgnoreFilter: vi.fn().mockReturnValue(() => true),
       generateOutput: vi.fn().mockResolvedValue(undefined),
       sanitizeFiles: vi.fn().mockResolvedValue([
         { path: 'file1.txt', content: 'processed content 1' },
         { path: file2Path, content: 'processed content 2' },
       ]),
     };
+
+    // Mock filterFiles function
+    vi.mocked(filterFiles).mockResolvedValue(['file1.txt', file2Path]);
   });
 
   test('pack should process files and generate output', async () => {
     const mockConfig = createMockConfig();
 
-    vi.mocked(fs.readdir)
-      .mockResolvedValueOnce([
-        { name: 'file1.txt', isDirectory: () => false },
-        { name: 'dir1', isDirectory: () => true },
-      ] as Dirent[])
-      .mockResolvedValueOnce([{ name: 'file2.txt', isDirectory: () => false }] as Dirent[]);
-
+    const file2Path = path.join('dir1', 'file2.txt');
     const result = await pack('root', mockConfig, mockDeps);
 
-    expect(fs.readdir).toHaveBeenCalledTimes(2);
-    expect(vi.mocked(fs.readdir).mock.calls[0][0]).toBe('root');
-    expect(vi.mocked(fs.readdir).mock.calls[1][0]).toBe(path.join('root', 'dir1'));
+    expect(filterFiles).toHaveBeenCalledWith('root', mockConfig);
 
-    expect(mockDeps.getAllIgnorePatterns).toHaveBeenCalledWith('root', mockConfig);
-    expect(mockDeps.createIgnoreFilter).toHaveBeenCalled();
-    const file2Path = path.join('dir1', 'file2.txt');
     expect(mockDeps.sanitizeFiles).toHaveBeenCalledWith(['file1.txt', file2Path], 'root', mockConfig);
     expect(mockDeps.generateOutput).toHaveBeenCalledWith(
       'root',
@@ -62,4 +53,46 @@ describe('packager', () => {
       [file2Path]: 19,
     });
   });
+
+  test('pack should handle empty filtered files list', async () => {
+    const mockConfig = createMockConfig();
+    vi.mocked(filterFiles).mockResolvedValue([]);
+
+    vi.mocked(mockDeps.sanitizeFiles).mockResolvedValue([]);
+
+    const result = await pack('root', mockConfig, mockDeps);
+
+    expect(filterFiles).toHaveBeenCalledWith('root', mockConfig);
+    expect(mockDeps.sanitizeFiles).toHaveBeenCalledWith([], 'root', mockConfig);
+    expect(mockDeps.generateOutput).toHaveBeenCalledWith('root', mockConfig, [], []);
+
+    expect(result.totalFiles).toBe(0);
+    expect(result.totalCharacters).toBe(0);
+    expect(result.fileCharCounts).toEqual({});
+  });
+
+  test('pack should handle security check and filter out suspicious files', async () => {
+    const mockConfig = createMockConfig();
+    const suspiciousFile = 'suspicious.txt';
+    const file2Path = path.join('dir1', 'file2.txt');
+    vi.mocked(filterFiles).mockResolvedValue(['file1.txt', file2Path, suspiciousFile]);
+
+    // Mock fs.readFile to return content for security check
+    vi.mocked(fs.readFile).mockImplementation((filepath) => {
+      if (filepath.toString().includes(suspiciousFile)) {
+        // secretlint-disable
+        return Promise.resolve('URL: https://user:pass@example.com');
+        // secretlint-enable
+      }
+      return Promise.resolve('normal content');
+    });
+
+    const result = await pack('root', mockConfig, mockDeps);
+
+    expect(filterFiles).toHaveBeenCalledWith('root', mockConfig);
+    expect(mockDeps.sanitizeFiles).toHaveBeenCalledWith(['file1.txt', file2Path], 'root', mockConfig);
+
+    expect(result.suspiciousFilesResults).toHaveLength(1);
+    expect(result.suspiciousFilesResults[0].filePath).toContain(suspiciousFile);
+  });
 });
diff --git a/tests/integration/packager.test.ts b/tests/integration/packager.test.ts
index 5ee11d58..2a6b7e88 100644
--- a/tests/integration/packager.test.ts
+++ b/tests/integration/packager.test.ts
@@ -3,15 +3,14 @@ import fs from 'fs/promises';
 import path from 'path';
 import os from 'os';
 import { pack } from '../../src/core/packager.js';
-import { RepopackConfigFile, RepopackConfigMerged } from '../../src/types/index.js';
+import { RepopackConfigFile, RepopackConfigMerged } from '../../src/config/configTypes.js';
 import { loadFileConfig, mergeConfigs } from '../../src/config/configLoader.js';
+import { isWindows } from '../testing/testUtils.js';
 
 const fixturesDir = path.join(__dirname, '..', 'fixtures', 'packager');
 const inputsDir = path.join(fixturesDir, 'inputs');
 const outputsDir = path.join(fixturesDir, 'outputs');
 
-const isWindows = os.platform() === 'win32';
-
 describe.runIf(!isWindows)('packager integration', () => {
   const testCases = [{ name: 'simple-project', config: {} }];
 
diff --git a/tests/testing/testUtils.ts b/tests/testing/testUtils.ts
index a00d4d83..0df6cb9a 100644
--- a/tests/testing/testUtils.ts
+++ b/tests/testing/testUtils.ts
@@ -1,9 +1,13 @@
+import { RepopackConfigMerged } from '../../src/config/configTypes.js';
 import { defaultConfig } from '../../src/config/defaultConfig.js';
-import { RepopackConfigMerged } from '../../src/types/index.js';
+import os from 'os';
 
 export const createMockConfig = (config: Partial<RepopackConfigMerged> = {}): RepopackConfigMerged => {
   return {
     output: config.output || defaultConfig.output,
     ignore: config.ignore || defaultConfig.ignore,
+    include: config.include || defaultConfig.include,
   };
 };
+
+export const isWindows = os.platform() === 'win32';
diff --git a/tests/utils/ignoreUtils.test.ts b/tests/utils/filterUtils.test.ts
similarity index 53%
rename from tests/utils/ignoreUtils.test.ts
rename to tests/utils/filterUtils.test.ts
index 319aa36a..0c53da95 100644
--- a/tests/utils/ignoreUtils.test.ts
+++ b/tests/utils/filterUtils.test.ts
@@ -1,19 +1,11 @@
 import { expect, test, vi, describe, beforeEach } from 'vitest';
-import {
-  getIgnorePatterns,
-  parseIgnoreContent,
-  createIgnoreFilter,
-  getAllIgnorePatterns,
-} from '../../src/utils/ignoreUtils.js';
+import { getIgnorePatterns, parseIgnoreContent, getAllIgnorePatterns } from '../../src/utils/filterUtils.js';
 import path from 'path';
 import * as fs from 'fs/promises';
-import os from 'os';
 import { createMockConfig } from '../testing/testUtils.js';
 
 vi.mock('fs/promises');
 
-const isWindows = os.platform() === 'win32';
-
 describe('ignoreUtils', () => {
   beforeEach(() => {
     vi.resetAllMocks();
@@ -77,84 +69,6 @@ node_modules
     });
   });
 
-  describe('createIgnoreFilter', () => {
-    test('should create a function that correctly filters paths', () => {
-      const patterns = ['node_modules', '*.log', '.DS_Store'];
-      const filter = createIgnoreFilter(patterns);
-
-      expect(filter('src/index.js')).toBe(true);
-      expect(filter('node_modules/package/index.js')).toBe(false);
-      expect(filter('logs/error.log')).toBe(false);
-      expect(filter('.DS_Store')).toBe(false);
-    });
-
-    test('should correctly ignore files with different path separators', () => {
-      const patterns = ['*.md', '*.svg', '*.css', 'node_modules/**'];
-      const filter = createIgnoreFilter(patterns);
-
-      // UNIX-style paths
-      expect(filter('README.md')).toBe(false);
-      expect(filter('src/assets/logo.svg')).toBe(false);
-      expect(filter('styles/main.css')).toBe(false);
-      expect(filter('node_modules/package/index.js')).toBe(false);
-
-      // Files that should not be ignored
-      expect(filter('src/index.js')).toBe(true);
-    });
-
-    test.runIf(isWindows)('should correctly ignore files with Windows-style paths', () => {
-      const patterns = ['*.md', '*.svg', '*.css', 'node_modules/**'];
-      const filter = createIgnoreFilter(patterns);
-
-      expect(filter('docs\\README.md')).toBe(false);
-      expect(filter('src\\assets\\logo.svg')).toBe(false);
-      expect(filter('styles\\main.css')).toBe(false);
-      expect(filter('node_modules\\package\\index.js')).toBe(false);
-      expect(filter('src\\components\\Button.js')).toBe(true);
-    });
-
-    test('should handle nested directory patterns correctly', () => {
-      const patterns = ['test/**/*.spec.js', 'build/**'];
-      const filter = createIgnoreFilter(patterns);
-
-      expect(filter('test/unit/component.spec.js')).toBe(false);
-      expect(filter('build/output.js')).toBe(false);
-      expect(filter('src/test/helper.js')).toBe(true);
-    });
-
-    test.runIf(isWindows)('should handle nested directory patterns with Windows-style paths', () => {
-      const patterns = ['test/**/*.spec.js', 'build/**'];
-      const filter = createIgnoreFilter(patterns);
-
-      expect(filter('test\\unit\\component.spec.js')).toBe(false);
-      expect(filter('build\\output.js')).toBe(false);
-      expect(filter('src\\test\\helper.js')).toBe(true);
-    });
-
-    test('should correctly handle patterns with special characters', () => {
-      const patterns = ['**/*.min.js', '**/#temp#', '**/node_modules'];
-      const filter = createIgnoreFilter(patterns);
-
-      expect(filter('dist/bundle.min.js')).toBe(false);
-      expect(filter('temp/#temp#/file.txt')).toBe(false);
-      expect(filter('project/node_modules/package/index.js')).toBe(false);
-
-      expect(filter('src/app.js')).toBe(true);
-      expect(filter('docs/temp/file.txt')).toBe(true);
-    });
-
-    test('should handle case sensitivity correctly', () => {
-      const patterns = ['*.MD', 'TEST'];
-      const filter = createIgnoreFilter(patterns);
-
-      expect(filter('readme.md')).toBe(false);
-      expect(filter('test/file.txt')).toBe(false);
-
-      expect(filter('README.MD')).toBe(false);
-      expect(filter('TEST/file.txt')).toBe(false);
-    });
-  });
-
   describe('getAllIgnorePatterns', () => {
     test('should merge patterns from .gitignore and .repopackignore when useGitignore is true', async () => {
       const mockConfig = createMockConfig({
diff --git a/tsconfig.json b/tsconfig.json
index 684d8aad..a0117ba7 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -18,5 +18,6 @@
     "resolveJsonModule": true,
     "types": ["node", "picocolors"]
   },
+  "include": ["src/**/*", "tests/**/*"],
   "exclude": ["tests/fixtures/"],
 }