diff --git a/src/main/kotlin/app/extractors/CExtractor.kt b/src/main/kotlin/app/extractors/CExtractor.kt
index 10d1cc47..f68539d1 100644
--- a/src/main/kotlin/app/extractors/CExtractor.kt
+++ b/src/main/kotlin/app/extractors/CExtractor.kt
@@ -19,17 +19,17 @@ class CExtractor : ExtractorInterface {
     }
 
     override fun extractImports(fileContent: List<String>): List<String> {
-        val libraries = mutableSetOf<String>()
+        val imports = mutableSetOf<String>()
 
         val regex = Regex("""#include\s+["<](\w+)[/\w+]*\.\w+[">]""")
         fileContent.forEach {
             val res = regex.find(it)
             if (res != null) {
                 val lineLib = res.groupValues.last()
-                libraries.add(lineLib)
+                imports.add(lineLib)
             }
         }
 
-        return libraries.toList()
+        return imports.toList()
     }
 }
diff --git a/src/main/kotlin/app/extractors/CSharpExtractor.kt b/src/main/kotlin/app/extractors/CSharpExtractor.kt
index 5ff978c9..65f9d6ea 100644
--- a/src/main/kotlin/app/extractors/CSharpExtractor.kt
+++ b/src/main/kotlin/app/extractors/CSharpExtractor.kt
@@ -12,6 +12,7 @@ class CSharpExtractor : ExtractorInterface {
     companion object {
         val LANGUAGE_NAME = "cs"
         val FILE_EXTS = listOf("cs")
+        val LIBRARIES = ExtractorInterface.getLibraries("cs")
     }
 
     override fun extract(files: List<DiffFile>): List<CommitStats> {
@@ -20,27 +21,21 @@ class CSharpExtractor : ExtractorInterface {
     }
 
     override fun extractImports(fileContent: List<String>): List<String> {
-        val libraries = mutableSetOf<String>()
-
-        // TODO(anatoly): Load file statically.
-        val csLibraries = File("data/libraries/cs_libraries.txt")
-            .inputStream().bufferedReader()
-            .readLines()
-            .toSet()
+        val imports = mutableSetOf<String>()
 
         val regex = Regex("""using\s+(\w+[.\w+]*)""")
         fileContent.forEach {
             val res = regex.find(it)
             if (res != null) {
                 val importedName = res.groupValues[1]
-                csLibraries.forEach { library ->
+                LIBRARIES.forEach { library ->
                     if (importedName.startsWith(library)) {
-                        libraries.add(library)
+                        imports.add(library)
                     }
                 }
             }
         }
 
-        return libraries.toList()
+        return imports.toList()
     }
 }
diff --git a/src/main/kotlin/app/extractors/CppExtractor.kt b/src/main/kotlin/app/extractors/CppExtractor.kt
index 60686777..29828cbd 100644
--- a/src/main/kotlin/app/extractors/CppExtractor.kt
+++ b/src/main/kotlin/app/extractors/CppExtractor.kt
@@ -19,17 +19,17 @@ class CppExtractor : ExtractorInterface {
     }
 
     override fun extractImports(fileContent: List<String>): List<String> {
-        val libraries = mutableSetOf<String>()
+        val imports = mutableSetOf<String>()
 
         val regex = Regex("""#include\s+["<](\w+)[/\w+]*\.\w+[">]""")
         fileContent.forEach {
             val res = regex.find(it)
             if (res != null) {
                 val lineLib = res.groupValues.last()
-                libraries.add(lineLib)
+                imports.add(lineLib)
             }
         }
 
-        return libraries.toList()
+        return imports.toList()
     }
 }
diff --git a/src/main/kotlin/app/extractors/ExtractorInterface.kt b/src/main/kotlin/app/extractors/ExtractorInterface.kt
index f2b8b9c7..165c923d 100644
--- a/src/main/kotlin/app/extractors/ExtractorInterface.kt
+++ b/src/main/kotlin/app/extractors/ExtractorInterface.kt
@@ -8,6 +8,14 @@ import app.model.DiffFile
 import app.model.CommitStats
 
 interface ExtractorInterface {
+    companion object {
+        fun getLibraries(name: String): Set<String> {
+            return ExtractorInterface::class.java.classLoader
+                .getResourceAsStream("data/libraries/${name}_libraries.txt")
+                .bufferedReader().readLines().toSet()
+        }
+    }
+
     fun extract(files: List<DiffFile>): List<CommitStats> {
         files.map { file ->
             file.old.imports = extractImports(file.old.content)
@@ -29,4 +37,6 @@ interface ExtractorInterface {
     fun extractImports(fileContent: List<String>): List<String> {
         return listOf()
     }
+
+
 }
diff --git a/src/main/kotlin/app/extractors/GoExtractor.kt b/src/main/kotlin/app/extractors/GoExtractor.kt
index ec98cfee..bd2862a4 100644
--- a/src/main/kotlin/app/extractors/GoExtractor.kt
+++ b/src/main/kotlin/app/extractors/GoExtractor.kt
@@ -19,26 +19,26 @@ class GoExtractor : ExtractorInterface {
     }
 
     override fun extractImports(fileContent: List<String>): List<String> {
-        val libraries = mutableSetOf<String>()
+        val imports = mutableSetOf<String>()
 
         val singleImportRegex = Regex("""import\s+"(\w+)"""")
         fileContent.forEach {
             val res = singleImportRegex.find(it)
             if (res != null) {
                 val lineLib = res.groupValues.last()
-                libraries.add(lineLib)
+                imports.add(lineLib)
             }
         }
         val multipleImportRegex = Regex("""import[\s\t\n]+\((.+?)\)""",
                 RegexOption.DOT_MATCHES_ALL)
         val contentJoined = fileContent.joinToString(separator = "")
         multipleImportRegex.findAll(contentJoined).forEach { matchResult ->
-            libraries.addAll(matchResult.groupValues.last()
+            imports.addAll(matchResult.groupValues.last()
                 .split(Regex("""(\t+|\n+|\s+)"""))
                 .filter { it.isNotEmpty() }
                 .map { it -> it.replace("\"", "") })
         }
 
-        return libraries.toList()
+        return imports.toList()
     }
 }
diff --git a/src/main/kotlin/app/extractors/JavaExtractor.kt b/src/main/kotlin/app/extractors/JavaExtractor.kt
index 051dc68e..f36d5ead 100644
--- a/src/main/kotlin/app/extractors/JavaExtractor.kt
+++ b/src/main/kotlin/app/extractors/JavaExtractor.kt
@@ -12,6 +12,7 @@ class JavaExtractor : ExtractorInterface {
     companion object {
         val LANGUAGE_NAME = "java"
         val FILE_EXTS = listOf("java")
+        val LIBRARIES = ExtractorInterface.getLibraries("java")
     }
 
     val KEYWORDS = listOf("abstract", "continue", "for", "new", "switch",
@@ -56,27 +57,21 @@ class JavaExtractor : ExtractorInterface {
     }
 
     override fun extractImports(fileContent: List<String>): List<String> {
-        val libraries = mutableSetOf<String>()
-
-        // TODO(anatoly): Load file statically.
-        val javaLibraries = File("data/libraries/java_libraries.txt")
-            .inputStream().bufferedReader()
-            .readLines()
-            .toSet()
+        val imports = mutableSetOf<String>()
 
         val regex = Regex("""import\s+(\w+[.\w+]*)""")
         fileContent.forEach {
             val res = regex.find(it)
             if (res != null) {
                 val importedName = res.groupValues[1]
-                javaLibraries.forEach { library ->
+                LIBRARIES.forEach { library ->
                     if (importedName.startsWith(library)) {
-                        libraries.add(library)
+                        imports.add(library)
                     }
                 }
             }
         }
 
-        return libraries.toList()
+        return imports.toList()
     }
 }
diff --git a/src/main/kotlin/app/extractors/JavascriptExtractor.kt b/src/main/kotlin/app/extractors/JavascriptExtractor.kt
index 914533da..a5d3a2df 100644
--- a/src/main/kotlin/app/extractors/JavascriptExtractor.kt
+++ b/src/main/kotlin/app/extractors/JavascriptExtractor.kt
@@ -6,12 +6,12 @@ package app.extractors
 
 import app.model.CommitStats
 import app.model.DiffFile
-import java.io.File
 
 class JavascriptExtractor : ExtractorInterface {
     companion object {
         val LANGUAGE_NAME = "js"
         val FILE_EXTS = listOf("js")
+        val LIBRARIES = ExtractorInterface.getLibraries("js")
     }
 
     override fun extract(files: List<DiffFile>): List<CommitStats> {
@@ -20,20 +20,14 @@ class JavascriptExtractor : ExtractorInterface {
     }
 
     override fun extractImports(fileContent: List<String>): List<String> {
-        val libraries = mutableSetOf<String>()
-
-        // TODO(anatoly): Load file statically.
-        val jsLibraries = File("data/libraries/js_libraries.txt")
-            .inputStream().bufferedReader()
-            .readLines()
-            .toSet()
+        val imports = mutableSetOf<String>()
 
         val splitRegex =
             Regex("""\s+|,|;|:|\\*|\n|\(|\)|\\[|]|\{|}|\+|=|\.|>|<|#|@|\$""")
         val fileTokens = fileContent.joinToString(separator = " ")
             .split(splitRegex)
-        libraries.addAll(fileTokens.filter { token -> token in jsLibraries })
+        imports.addAll(fileTokens.filter { token -> token in LIBRARIES })
 
-        return libraries.toList()
+        return imports.toList()
     }
 }
diff --git a/src/main/kotlin/app/extractors/ObjectiveCExtractor.kt b/src/main/kotlin/app/extractors/ObjectiveCExtractor.kt
index 5f16b09e..4eda9282 100644
--- a/src/main/kotlin/app/extractors/ObjectiveCExtractor.kt
+++ b/src/main/kotlin/app/extractors/ObjectiveCExtractor.kt
@@ -19,7 +19,7 @@ class ObjectiveCExtractor : ExtractorInterface {
     }
 
     override fun extractImports(fileContent: List<String>): List<String> {
-        val libraries = mutableSetOf<String>()
+        val imports = mutableSetOf<String>()
 
         val sharpImportIncludeRegex =
             Regex("""#(import|include)\s+[">](\w+)[/\w+]*\.\w+[">]""")
@@ -30,10 +30,10 @@ class ObjectiveCExtractor : ExtractorInterface {
                 atImportRegex.findAll(it)
             if (res.toList().isNotEmpty()) {
                 val lineLib = res.toList().map { it.groupValues }.last().last()
-                libraries.add(lineLib)
+                imports.add(lineLib)
             }
         }
 
-        return libraries.toList()
+        return imports.toList()
     }
 }
diff --git a/src/main/kotlin/app/extractors/PhpExtractor.kt b/src/main/kotlin/app/extractors/PhpExtractor.kt
index 60b91215..66832489 100644
--- a/src/main/kotlin/app/extractors/PhpExtractor.kt
+++ b/src/main/kotlin/app/extractors/PhpExtractor.kt
@@ -19,7 +19,7 @@ class PhpExtractor : ExtractorInterface {
     }
 
     override fun extractImports(fileContent: List<String>): List<String> {
-        val libraries = mutableSetOf<String>()
+        val imports = mutableSetOf<String>()
 
         val useRegex = Regex("""use\s+(\w+)[\\\w+]*""")
         val requireIncludeRegex = Regex("""(require|require_once|include|""" +
@@ -28,10 +28,10 @@ class PhpExtractor : ExtractorInterface {
             val res = useRegex.findAll(it) + requireIncludeRegex.findAll(it)
             if (res.toList().isNotEmpty()) {
                 val lineLib = res.toList().map { it.groupValues }.last().last()
-                libraries.add(lineLib)
+                imports.add(lineLib)
             }
         }
 
-        return libraries.toList()
+        return imports.toList()
     }
 }
diff --git a/src/main/kotlin/app/extractors/PythonExtractor.kt b/src/main/kotlin/app/extractors/PythonExtractor.kt
index 604027f3..139cc9f2 100644
--- a/src/main/kotlin/app/extractors/PythonExtractor.kt
+++ b/src/main/kotlin/app/extractors/PythonExtractor.kt
@@ -19,7 +19,7 @@ class PythonExtractor : ExtractorInterface {
     }
 
     override fun extractImports(fileContent: List<String>): List<String> {
-        val libraries = mutableSetOf<String>()
+        val imports = mutableSetOf<String>()
 
         val regex =
             Regex("""(from\s+(\w+)[.\w+]*\s+import|import\s+(\w+[,\s*\w+]*))""")
@@ -28,10 +28,10 @@ class PythonExtractor : ExtractorInterface {
             if (res != null) {
                 val lineLibs = res.groupValues.last { it != "" }
                     .split(Regex(""",\s*"""))
-                libraries.addAll(lineLibs)
+                imports.addAll(lineLibs)
             }
         }
 
-        return libraries.toList()
+        return imports.toList()
     }
 }
diff --git a/src/main/kotlin/app/extractors/RubyExtractor.kt b/src/main/kotlin/app/extractors/RubyExtractor.kt
index 98adaf27..5c9518df 100644
--- a/src/main/kotlin/app/extractors/RubyExtractor.kt
+++ b/src/main/kotlin/app/extractors/RubyExtractor.kt
@@ -19,17 +19,17 @@ class RubyExtractor : ExtractorInterface {
     }
 
     override fun extractImports(fileContent: List<String>): List<String> {
-        val libraries = mutableSetOf<String>()
+        val imports = mutableSetOf<String>()
 
         val regex = Regex("""(require\s+'(\w+)'|load\s+'(\w+)\.\w+')""")
         fileContent.forEach {
             val res = regex.find(it)
             if (res != null) {
                 val lineLib = res.groupValues.last { it -> it != "" }
-                libraries.add(lineLib)
+                imports.add(lineLib)
             }
         }
 
-        return libraries.toList()
+        return imports.toList()
     }
 }
diff --git a/src/main/kotlin/app/extractors/SwiftExtractor.kt b/src/main/kotlin/app/extractors/SwiftExtractor.kt
index 95d21848..742f2c29 100644
--- a/src/main/kotlin/app/extractors/SwiftExtractor.kt
+++ b/src/main/kotlin/app/extractors/SwiftExtractor.kt
@@ -19,17 +19,17 @@ class SwiftExtractor : ExtractorInterface {
     }
 
     override fun extractImports(fileContent: List<String>): List<String> {
-        val libraries = mutableSetOf<String>()
+        val imports = mutableSetOf<String>()
 
         val regex = Regex("""import\s+(\w+)""")
         fileContent.forEach {
             val res = regex.find(it)
             if (res != null) {
                 val lineLib = res.groupValues[1]
-                libraries.add(lineLib)
+                imports.add(lineLib)
             }
         }
 
-        return libraries.toList()
+        return imports.toList()
     }
 }
diff --git a/src/main/kotlin/app/hashers/CommitHasher.kt b/src/main/kotlin/app/hashers/CommitHasher.kt
index f3a1a05f..e9cc1d81 100644
--- a/src/main/kotlin/app/hashers/CommitHasher.kt
+++ b/src/main/kotlin/app/hashers/CommitHasher.kt
@@ -95,6 +95,7 @@ class CommitHasher(private val localRepo: LocalRepo,
             .subscribe({ commitsBundle ->  // OnNext.
                 postCommitsToServer(commitsBundle)  // Send ready commits.
             }, { e ->  // OnError.
+                Logger.error("Hashing error: " + e.message)
                 throwables.add(e)  // TODO(anatoly): Top-class handling errors.
             })
     }
diff --git a/data/libraries/cs_libraries.txt b/src/main/resources/data/libraries/cs_libraries.txt
similarity index 100%
rename from data/libraries/cs_libraries.txt
rename to src/main/resources/data/libraries/cs_libraries.txt
diff --git a/data/libraries/java_libraries.txt b/src/main/resources/data/libraries/java_libraries.txt
similarity index 100%
rename from data/libraries/java_libraries.txt
rename to src/main/resources/data/libraries/java_libraries.txt
diff --git a/data/libraries/js_libraries.txt b/src/main/resources/data/libraries/js_libraries.txt
similarity index 100%
rename from data/libraries/js_libraries.txt
rename to src/main/resources/data/libraries/js_libraries.txt