diff --git a/android.gradle b/android.gradle
index 695b8bd..311269b 100644
--- a/android.gradle
+++ b/android.gradle
@@ -5,22 +5,4 @@ android {
         minSdkVersion 19
         targetSdkVersion 30
     }
-
-    compileOptions {
-        sourceCompatibility '1.8'
-        targetCompatibility '1.8'
-    }
-}
-
-pluginManager.withPlugin('org.jetbrains.kotlin.android') {
-    android {
-        kotlinOptions {
-            jvmTarget = '1.8'
-            freeCompilerArgs += [
-                    '-Xno-call-assertions',
-                    '-Xno-param-assertions',
-                    '-Xno-receiver-assertions',
-            ]
-        }
-    }
 }
diff --git a/astring/src/main/kotlin/xyz/tynn/astring/AString.kt b/astring/src/main/kotlin/xyz/tynn/astring/AString.kt
index 0b34e5e..2b5180c 100644
--- a/astring/src/main/kotlin/xyz/tynn/astring/AString.kt
+++ b/astring/src/main/kotlin/xyz/tynn/astring/AString.kt
@@ -11,40 +11,40 @@ import kotlin.reflect.KProperty
 /**
  * Invokes the `AString` with [Fragment.requireContext]
  */
-operator fun AString.invoke(
+public operator fun AString.invoke(
     fragment: Fragment,
-) = invoke(fragment.requireContext())
+): CharSequence? = invoke(fragment.requireContext())
 
 /**
  * Invokes the `AString` with [View.getContext]
  */
-operator fun AString.invoke(
+public operator fun AString.invoke(
     view: View,
-) = invoke(view.context)
+): CharSequence? = invoke(view.context)
 
 /**
  * Delegates a `CharSequence?` property within a [Context] to the `AString`
  */
 @JvmSynthetic
-operator fun AString.getValue(
+public operator fun AString.getValue(
     thisRef: Context,
     property: KProperty<*>,
-) = invoke(thisRef)
+): CharSequence? = invoke(thisRef)
 
 /**
  * Delegates a `CharSequence?` property within a [Fragment] to the `AString`
  */
 @JvmSynthetic
-operator fun AString.getValue(
+public operator fun AString.getValue(
     thisRef: Fragment,
     property: KProperty<*>,
-) = invoke(thisRef.requireContext())
+): CharSequence? = invoke(thisRef.requireContext())
 
 /**
  * Delegates a `CharSequence?` property within a [View] to the `AString`
  */
 @JvmSynthetic
-operator fun AString.getValue(
+public operator fun AString.getValue(
     thisRef: View,
     property: KProperty<*>,
-) = invoke(thisRef.context)
+): CharSequence? = invoke(thisRef.context)
diff --git a/astring/src/main/kotlin/xyz/tynn/astring/AStringFactory.kt b/astring/src/main/kotlin/xyz/tynn/astring/AStringFactory.kt
index 43526d5..ec0090c 100644
--- a/astring/src/main/kotlin/xyz/tynn/astring/AStringFactory.kt
+++ b/astring/src/main/kotlin/xyz/tynn/astring/AStringFactory.kt
@@ -10,7 +10,7 @@ import androidx.annotation.PluralsRes
 import androidx.annotation.StringRes
 
 @JvmField
-val nullAsAString: AString = NullValueWrapper.I
+public val nullAsAString: AString = NullValueWrapper.I
 
 /**
  * Creates an `AString` from a `CharSequence?`
@@ -18,8 +18,8 @@ val nullAsAString: AString = NullValueWrapper.I
  * Returns [nullAsAString] for null
  */
 @JvmName("createFromCharSequence")
-fun CharSequence?.asAString() = if (this == null)
-    NullValueWrapper.I
+public fun CharSequence?.asAString(): AString = if (this == null)
+    nullAsAString
 else CharSequenceWrapper(this)
 
 /**
@@ -28,11 +28,11 @@ else CharSequenceWrapper(this)
  * Returns [nullAsAString] for 0
  */
 @JvmName("createFromQuantityStringResource")
-fun QuantityStringResource(
+public fun QuantityStringResource(
     @PluralsRes resId: Int,
     quantity: Int,
-) = if (resId == 0)
-    NullValueWrapper.I
+): AString = if (resId == 0)
+    nullAsAString
 else QuantityStringResourceDelegate(
     resId,
     quantity,
@@ -45,12 +45,12 @@ else QuantityStringResourceDelegate(
  * Returns [nullAsAString] for 0
  */
 @JvmName("createFromQuantityStringResource")
-fun QuantityStringResource(
+public fun QuantityStringResource(
     @PluralsRes resId: Int,
     quantity: Int,
     vararg formatArgs: Any?,
-) = if (resId == 0)
-    NullValueWrapper.I
+): AString = if (resId == 0)
+    nullAsAString
 else QuantityStringResourceDelegate(
     resId,
     quantity,
@@ -63,11 +63,11 @@ else QuantityStringResourceDelegate(
  * Returns [nullAsAString] for 0
  */
 @JvmName("createFromQuantityTextResource")
-fun QuantityTextResource(
+public fun QuantityTextResource(
     @PluralsRes resId: Int,
     quantity: Int,
-) = if (resId == 0)
-    NullValueWrapper.I
+): AString = if (resId == 0)
+    nullAsAString
 else QuantityTextResourceDelegate(
     resId,
     quantity,
@@ -79,10 +79,10 @@ else QuantityTextResourceDelegate(
  * Returns [nullAsAString] for 0
  */
 @JvmName("createFromStringResource")
-fun StringResource(
+public fun StringResource(
     @StringRes resId: Int,
-) = if (resId == 0)
-    NullValueWrapper.I
+): AString = if (resId == 0)
+    nullAsAString
 else StringResourceDelegate(
     resId,
     null,
@@ -94,11 +94,11 @@ else StringResourceDelegate(
  * Returns [nullAsAString] for 0
  */
 @JvmName("createFromStringResource")
-fun StringResource(
+public fun StringResource(
     @StringRes resId: Int,
     vararg formatArgs: Any?,
-) = if (resId == 0)
-    NullValueWrapper.I
+): AString = if (resId == 0)
+    nullAsAString
 else StringResourceDelegate(
     resId,
     formatArgs,
@@ -110,10 +110,10 @@ else StringResourceDelegate(
  * Returns [nullAsAString] for 0
  */
 @JvmName("createFromTextResource")
-fun TextResource(
+public fun TextResource(
     @StringRes resId: Int,
-) = if (resId == 0)
-    NullValueWrapper.I
+): AString = if (resId == 0)
+    nullAsAString
 else TextResourceDelegate(
     resId,
 )
diff --git a/astring/src/test/java/xyz/tynn/astring/AStringFactoryTest.java b/astring/src/test/java/xyz/tynn/astring/AStringFactoryTest.java
index a808f27..fb6ec7c 100644
--- a/astring/src/test/java/xyz/tynn/astring/AStringFactoryTest.java
+++ b/astring/src/test/java/xyz/tynn/astring/AStringFactoryTest.java
@@ -3,12 +3,12 @@
 
 package xyz.tynn.astring;
 
-import org.junit.Test;
-
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertSame;
 import static xyz.tynn.astring.NullValueWrapper.I;
 
+import org.junit.Test;
+
 public class AStringFactoryTest {
 
     @Test
diff --git a/astring/src/test/java/xyz/tynn/astring/AStringTest.java b/astring/src/test/java/xyz/tynn/astring/AStringTest.java
index 8d86656..baefc17 100644
--- a/astring/src/test/java/xyz/tynn/astring/AStringTest.java
+++ b/astring/src/test/java/xyz/tynn/astring/AStringTest.java
@@ -3,6 +3,9 @@
 
 package xyz.tynn.astring;
 
+import static xyz.tynn.astring.testing.mockk.MockKt.init;
+import static xyz.tynn.astring.testing.mockk.MockKt.verify;
+
 import android.view.View;
 
 import androidx.fragment.app.Fragment;
@@ -12,9 +15,6 @@
 
 import io.mockk.impl.annotations.MockK;
 
-import static xyz.tynn.astring.testing.mockk.MockKt.init;
-import static xyz.tynn.astring.testing.mockk.MockKt.verify;
-
 public class AStringTest {
 
     @MockK
diff --git a/astring/src/test/kotlin/xyz/tynn/astring/AStringKtTest.kt b/astring/src/test/kotlin/xyz/tynn/astring/AStringKtTest.kt
index e3316e8..23bbf25 100644
--- a/astring/src/test/kotlin/xyz/tynn/astring/AStringKtTest.kt
+++ b/astring/src/test/kotlin/xyz/tynn/astring/AStringKtTest.kt
@@ -13,7 +13,7 @@ import io.mockk.spyk
 import io.mockk.verify
 import kotlin.test.Test
 
-class AStringKtTest {
+internal class AStringKtTest {
 
     val aString = mockk<AString>(relaxed = true)
     val aContext = mockk<Context>()
diff --git a/build.gradle b/build.gradle
index 76c6eba..bd9417b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -22,22 +22,7 @@ subprojects {
     pluginManager.withPlugin('com.android.library') {
         apply plugin: 'org.jetbrains.kotlin.android'
         apply from: "$rootDir/android.gradle"
-
-        android {
-            libraryVariants.all {
-                it.generateBuildConfigProvider.configure {
-                    enabled = false
-                }
-            }
-        }
-
-        tasks.withType(GenerateModuleMetadata).configureEach {
-            enabled = false
-        }
-
-        dependencies {
-            compileOnly 'org.jetbrains.kotlin:kotlin-stdlib'
-        }
+        apply from: "$rootDir/library.gradle"
     }
 
     pluginManager.withPlugin('com.android.application') {
diff --git a/example/base/src/main/kotlin/xyz/tynn/astring/example/base/AStrings.kt b/example/base/src/main/kotlin/xyz/tynn/astring/example/base/AStrings.kt
index ecb884f..b5f2066 100644
--- a/example/base/src/main/kotlin/xyz/tynn/astring/example/base/AStrings.kt
+++ b/example/base/src/main/kotlin/xyz/tynn/astring/example/base/AStrings.kt
@@ -5,21 +5,21 @@ package xyz.tynn.astring.example.base
 
 import xyz.tynn.astring.*
 
-val aString = "AString".asAString()
-val accessibilityPaneTitle = "accessibility pane title".asAString()
-val action1 = StringResource(R.string.astring_action, 1)
-val action2 = StringResource(R.string.astring_action, 2)
-val action3 = StringResource(R.string.astring_action, 3)
-val append = StringResource(R.string.astring_append)
-val appendRange = StringResource(R.string.astring_append_range, 123)
-val contentDescription = "content description".asAString()
-val dialog = StringResource(R.string.astring_dialog)
-val error = StringResource(R.string.astring_error)
-val errorIcon = StringResource(R.string.astring_error_with_icon)
-val hint = QuantityStringResource(R.plurals.astring_text_hint, 0)
-val message = StringResource(R.string.astring_message)
-val stateDescription = "state description".asAString()
-val text = TextResource(R.string.astring_text)
-val textType = QuantityTextResource(R.plurals.astring_text_type, 5)
-val title = StringResource(R.string.astring_title)
-val tooltipText = QuantityStringResource(R.plurals.astring_tooltip_text, 2, 2)
+public val aString: AString = "AString".asAString()
+public val accessibilityPaneTitle: AString = "accessibility pane title".asAString()
+public val action1: AString = StringResource(R.string.astring_action, 1)
+public val action2: AString = StringResource(R.string.astring_action, 2)
+public val action3: AString = StringResource(R.string.astring_action, 3)
+public val append: AString = StringResource(R.string.astring_append)
+public val appendRange: AString = StringResource(R.string.astring_append_range, 123)
+public val contentDescription: AString = "content description".asAString()
+public val dialog: AString = StringResource(R.string.astring_dialog)
+public val error: AString = StringResource(R.string.astring_error)
+public val errorIcon: AString = StringResource(R.string.astring_error_with_icon)
+public val hint: AString = QuantityStringResource(R.plurals.astring_text_hint, 0)
+public val message: AString = StringResource(R.string.astring_message)
+public val stateDescription: AString = "state description".asAString()
+public val text: AString = TextResource(R.string.astring_text)
+public val textType: AString = QuantityTextResource(R.plurals.astring_text_type, 5)
+public val title: AString = StringResource(R.string.astring_title)
+public val tooltipText: AString = QuantityStringResource(R.plurals.astring_tooltip_text, 2, 2)
diff --git a/example/java/src/main/java/xyz/tynn/astring/example/java/MainActivity.java b/example/java/src/main/java/xyz/tynn/astring/example/java/MainActivity.java
index c430c6b..fce8520 100644
--- a/example/java/src/main/java/xyz/tynn/astring/example/java/MainActivity.java
+++ b/example/java/src/main/java/xyz/tynn/astring/example/java/MainActivity.java
@@ -3,30 +3,6 @@
 
 package xyz.tynn.astring.example.java;
 
-import android.app.AlertDialog.Builder;
-import android.content.DialogInterface.OnClickListener;
-import android.graphics.drawable.Drawable;
-import android.os.Bundle;
-import android.util.Log;
-import android.view.View;
-import android.widget.Toast;
-
-import androidx.annotation.Nullable;
-import androidx.appcompat.app.AlertDialog;
-import androidx.appcompat.app.AppCompatActivity;
-import androidx.core.content.ContextCompat;
-
-import com.google.android.material.dialog.MaterialAlertDialogBuilder;
-import com.google.android.material.snackbar.Snackbar;
-
-import xyz.tynn.astring.appcompat.AStringAlertDialog;
-import xyz.tynn.astring.appcompat.AStringAlertDialogBuilder;
-import xyz.tynn.astring.core.AStringToast;
-import xyz.tynn.astring.example.base.AStringsKt;
-import xyz.tynn.astring.example.base.R;
-import xyz.tynn.astring.example.base.databinding.ActivityMainBinding;
-import xyz.tynn.astring.material.AStringSnackbar;
-
 import static android.content.DialogInterface.BUTTON_NEGATIVE;
 import static android.widget.TextView.BufferType.SPANNABLE;
 import static android.widget.Toast.LENGTH_SHORT;
@@ -60,6 +36,30 @@
 import static xyz.tynn.astring.material.AStringSnackbar.make;
 import static xyz.tynn.astring.material.AStringSnackbar.setAction;
 
+import android.app.AlertDialog.Builder;
+import android.content.DialogInterface.OnClickListener;
+import android.graphics.drawable.Drawable;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.View;
+import android.widget.Toast;
+
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.content.ContextCompat;
+
+import com.google.android.material.dialog.MaterialAlertDialogBuilder;
+import com.google.android.material.snackbar.Snackbar;
+
+import xyz.tynn.astring.appcompat.AStringAlertDialog;
+import xyz.tynn.astring.appcompat.AStringAlertDialogBuilder;
+import xyz.tynn.astring.core.AStringToast;
+import xyz.tynn.astring.example.base.AStringsKt;
+import xyz.tynn.astring.example.base.R;
+import xyz.tynn.astring.example.base.databinding.ActivityMainBinding;
+import xyz.tynn.astring.material.AStringSnackbar;
+
 public class MainActivity extends AppCompatActivity {
 
     private CharSequence tag = null;
diff --git a/extension/appcompat/src/main/kotlin/xyz/tynn/astring/appcompat/AStringAlertDialog.kt b/extension/appcompat/src/main/kotlin/xyz/tynn/astring/appcompat/AStringAlertDialog.kt
index 5b5f27b..cf9075b 100644
--- a/extension/appcompat/src/main/kotlin/xyz/tynn/astring/appcompat/AStringAlertDialog.kt
+++ b/extension/appcompat/src/main/kotlin/xyz/tynn/astring/appcompat/AStringAlertDialog.kt
@@ -23,11 +23,11 @@ private annotation class DialogInterfaceButton
  *
  * @see AlertDialog.setButton
  */
-fun AlertDialog.setButton(
+public fun AlertDialog.setButton(
     @DialogInterfaceButton whichButton: Int,
     text: AString,
     listener: OnClickListener?,
-) = setButton(
+): Unit = setButton(
     whichButton,
     text(context),
     listener,
@@ -40,11 +40,11 @@ fun AlertDialog.setButton(
  *
  * @see AlertDialog.setButton
  */
-fun AlertDialog.setButton(
+public fun AlertDialog.setButton(
     @DialogInterfaceButton whichButton: Int,
     text: AString,
     msg: Message?,
-) = setButton(
+): Unit = setButton(
     whichButton,
     text(context),
     msg,
@@ -55,9 +55,9 @@ fun AlertDialog.setButton(
  *
  * @see AlertDialog.setMessage
  */
-fun AlertDialog.setMessage(
+public fun AlertDialog.setMessage(
     message: AString,
-) = setMessage(
+): Unit = setMessage(
     message(context),
 )
 
@@ -66,8 +66,8 @@ fun AlertDialog.setMessage(
  *
  * @see AlertDialog.setTitle
  */
-fun AlertDialog.setTitle(
+public fun AlertDialog.setTitle(
     title: AString,
-) = setTitle(
+): Unit = setTitle(
     title(context),
 )
diff --git a/extension/appcompat/src/main/kotlin/xyz/tynn/astring/appcompat/AStringAlertDialogBuilder.kt b/extension/appcompat/src/main/kotlin/xyz/tynn/astring/appcompat/AStringAlertDialogBuilder.kt
index 752b236..e69dd4b 100644
--- a/extension/appcompat/src/main/kotlin/xyz/tynn/astring/appcompat/AStringAlertDialogBuilder.kt
+++ b/extension/appcompat/src/main/kotlin/xyz/tynn/astring/appcompat/AStringAlertDialogBuilder.kt
@@ -14,15 +14,14 @@ import xyz.tynn.astring.AString
  *
  * @see Builder.setNegativeButton
  */
-fun <B : Builder> B.setNegativeButton(
+public fun <B : Builder> B.setNegativeButton(
     text: AString,
     listener: OnClickListener?,
-): B {
+): B = apply {
     setNegativeButton(
         text(context),
         listener,
     )
-    return this
 }
 
 /**
@@ -30,15 +29,14 @@ fun <B : Builder> B.setNegativeButton(
  *
  * @see Builder.setNeutralButton
  */
-fun <B : Builder> B.setNeutralButton(
+public fun <B : Builder> B.setNeutralButton(
     text: AString,
     listener: OnClickListener?,
-): B {
+): B = apply {
     setNeutralButton(
         text(context),
         listener,
     )
-    return this
 }
 
 /**
@@ -46,15 +44,14 @@ fun <B : Builder> B.setNeutralButton(
  *
  * @see Builder.setPositiveButton
  */
-fun <B : Builder> B.setPositiveButton(
+public fun <B : Builder> B.setPositiveButton(
     text: AString,
     listener: OnClickListener?,
-): B {
+): B = apply {
     setPositiveButton(
         text(context),
         listener,
     )
-    return this
 }
 
 /**
@@ -62,13 +59,12 @@ fun <B : Builder> B.setPositiveButton(
  *
  * @see Builder.setMessage
  */
-fun <B : Builder> B.setMessage(
+public fun <B : Builder> B.setMessage(
     message: AString,
-): B {
+): B = apply {
     setMessage(
         message(context),
     )
-    return this
 }
 
 /**
@@ -76,11 +72,10 @@ fun <B : Builder> B.setMessage(
  *
  * @see Builder.setTitle
  */
-fun <B : Builder> B.setTitle(
+public fun <B : Builder> B.setTitle(
     title: AString,
-): B {
+): B = apply {
     setTitle(
         title(context),
     )
-    return this
 }
diff --git a/extension/appcompat/src/main/kotlin/xyz/tynn/astring/appcompat/AStringToolbar.kt b/extension/appcompat/src/main/kotlin/xyz/tynn/astring/appcompat/AStringToolbar.kt
index da5ffa9..c642d86 100644
--- a/extension/appcompat/src/main/kotlin/xyz/tynn/astring/appcompat/AStringToolbar.kt
+++ b/extension/appcompat/src/main/kotlin/xyz/tynn/astring/appcompat/AStringToolbar.kt
@@ -13,9 +13,9 @@ import xyz.tynn.astring.AString
  * @see Toolbar.setLogoDescription
  */
 @Suppress("UsePropertyAccessSyntax")
-fun Toolbar.setLogoDescription(
+public fun Toolbar.setLogoDescription(
     description: AString,
-) = setLogoDescription(
+): Unit = setLogoDescription(
     description(context),
 )
 
@@ -23,9 +23,9 @@ fun Toolbar.setLogoDescription(
  * Sets a subtitle
  * @see Toolbar.setSubtitle
  */
-fun Toolbar.setSubtitle(
+public fun Toolbar.setSubtitle(
     subtitle: AString,
-) = setSubtitle(
+): Unit = setSubtitle(
     subtitle(context),
 )
 
@@ -33,8 +33,8 @@ fun Toolbar.setSubtitle(
  * Sets a title
  * @see Toolbar.setTitle
  */
-fun Toolbar.setTitle(
+public fun Toolbar.setTitle(
     title: AString,
-) = setTitle(
+): Unit = setTitle(
     title(context),
 )
diff --git a/extension/appcompat/src/test/java/xyz/tynn/astring/appcompat/AStringAlertDialogBuilderTest.java b/extension/appcompat/src/test/java/xyz/tynn/astring/appcompat/AStringAlertDialogBuilderTest.java
index f8f0ff1..37d6f65 100644
--- a/extension/appcompat/src/test/java/xyz/tynn/astring/appcompat/AStringAlertDialogBuilderTest.java
+++ b/extension/appcompat/src/test/java/xyz/tynn/astring/appcompat/AStringAlertDialogBuilderTest.java
@@ -3,6 +3,10 @@
 
 package xyz.tynn.astring.appcompat;
 
+import static org.junit.Assert.assertSame;
+import static xyz.tynn.astring.testing.mockk.MockKt.init;
+import static xyz.tynn.astring.testing.mockk.MockKt.verify;
+
 import android.content.DialogInterface.OnClickListener;
 
 import androidx.appcompat.app.AlertDialog;
@@ -13,10 +17,6 @@
 import io.mockk.impl.annotations.MockK;
 import xyz.tynn.astring.AString;
 
-import static org.junit.Assert.assertSame;
-import static xyz.tynn.astring.testing.mockk.MockKt.init;
-import static xyz.tynn.astring.testing.mockk.MockKt.verify;
-
 public class AStringAlertDialogBuilderTest {
 
     @MockK
diff --git a/extension/appcompat/src/test/java/xyz/tynn/astring/appcompat/AStringAlertDialogTest.java b/extension/appcompat/src/test/java/xyz/tynn/astring/appcompat/AStringAlertDialogTest.java
index b49f888..832dcb2 100644
--- a/extension/appcompat/src/test/java/xyz/tynn/astring/appcompat/AStringAlertDialogTest.java
+++ b/extension/appcompat/src/test/java/xyz/tynn/astring/appcompat/AStringAlertDialogTest.java
@@ -3,6 +3,10 @@
 
 package xyz.tynn.astring.appcompat;
 
+import static android.content.DialogInterface.BUTTON_NEUTRAL;
+import static xyz.tynn.astring.testing.mockk.MockKt.init;
+import static xyz.tynn.astring.testing.mockk.MockKt.verify;
+
 import android.content.DialogInterface.OnClickListener;
 import android.os.Message;
 
@@ -14,10 +18,6 @@
 import io.mockk.impl.annotations.MockK;
 import xyz.tynn.astring.AString;
 
-import static android.content.DialogInterface.BUTTON_NEUTRAL;
-import static xyz.tynn.astring.testing.mockk.MockKt.init;
-import static xyz.tynn.astring.testing.mockk.MockKt.verify;
-
 public class AStringAlertDialogTest {
 
     @MockK
diff --git a/extension/appcompat/src/test/java/xyz/tynn/astring/appcompat/AStringToolbarTest.java b/extension/appcompat/src/test/java/xyz/tynn/astring/appcompat/AStringToolbarTest.java
index c695c13..6eb9f06 100644
--- a/extension/appcompat/src/test/java/xyz/tynn/astring/appcompat/AStringToolbarTest.java
+++ b/extension/appcompat/src/test/java/xyz/tynn/astring/appcompat/AStringToolbarTest.java
@@ -3,6 +3,9 @@
 
 package xyz.tynn.astring.appcompat;
 
+import static xyz.tynn.astring.testing.mockk.MockKt.init;
+import static xyz.tynn.astring.testing.mockk.MockKt.verify;
+
 import androidx.appcompat.widget.Toolbar;
 
 import org.junit.Before;
@@ -11,9 +14,6 @@
 import io.mockk.impl.annotations.MockK;
 import xyz.tynn.astring.AString;
 
-import static xyz.tynn.astring.testing.mockk.MockKt.init;
-import static xyz.tynn.astring.testing.mockk.MockKt.verify;
-
 public class AStringToolbarTest {
 
     @MockK
diff --git a/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringAlertDialog.kt b/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringAlertDialog.kt
index 2dadfcf..0f3307d 100644
--- a/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringAlertDialog.kt
+++ b/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringAlertDialog.kt
@@ -23,11 +23,11 @@ private annotation class DialogInterfaceButton
  *
  * @see AlertDialog.setButton
  */
-fun AlertDialog.setButton(
+public fun AlertDialog.setButton(
     @DialogInterfaceButton whichButton: Int,
     text: AString,
     listener: OnClickListener?,
-) = setButton(
+): Unit = setButton(
     whichButton,
     text(context),
     listener,
@@ -40,11 +40,11 @@ fun AlertDialog.setButton(
  *
  * @see AlertDialog.setButton
  */
-fun AlertDialog.setButton(
+public fun AlertDialog.setButton(
     @DialogInterfaceButton whichButton: Int,
     text: AString,
     msg: Message?,
-) = setButton(
+): Unit = setButton(
     whichButton,
     text(context),
     msg,
@@ -55,9 +55,9 @@ fun AlertDialog.setButton(
  *
  * @see AlertDialog.setMessage
  */
-fun AlertDialog.setMessage(
+public fun AlertDialog.setMessage(
     message: AString,
-) = setMessage(
+): Unit = setMessage(
     message(context),
 )
 
@@ -66,8 +66,8 @@ fun AlertDialog.setMessage(
  *
  * @see AlertDialog.setTitle
  */
-fun AlertDialog.setTitle(
+public fun AlertDialog.setTitle(
     title: AString,
-) = setTitle(
+): Unit = setTitle(
     title(context),
 )
diff --git a/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringAlertDialogBuilder.kt b/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringAlertDialogBuilder.kt
index 3b56da9..a71e5c3 100644
--- a/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringAlertDialogBuilder.kt
+++ b/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringAlertDialogBuilder.kt
@@ -14,15 +14,14 @@ import xyz.tynn.astring.AString
  *
  * @see Builder.setNegativeButton
  */
-fun <B : Builder> B.setNegativeButton(
+public fun <B : Builder> B.setNegativeButton(
     text: AString,
     listener: OnClickListener?,
-): B {
+): B = apply {
     setNegativeButton(
         text(context),
         listener,
     )
-    return this
 }
 
 /**
@@ -30,15 +29,14 @@ fun <B : Builder> B.setNegativeButton(
  *
  * @see Builder.setNeutralButton
  */
-fun <B : Builder> B.setNeutralButton(
+public fun <B : Builder> B.setNeutralButton(
     text: AString,
     listener: OnClickListener?,
-): B {
+): B = apply {
     setNeutralButton(
         text(context),
         listener,
     )
-    return this
 }
 
 /**
@@ -46,15 +44,14 @@ fun <B : Builder> B.setNeutralButton(
  *
  * @see Builder.setPositiveButton
  */
-fun <B : Builder> B.setPositiveButton(
+public fun <B : Builder> B.setPositiveButton(
     text: AString,
     listener: OnClickListener?,
-): B {
+): B = apply {
     setPositiveButton(
         text(context),
         listener,
     )
-    return this
 }
 
 /**
@@ -62,13 +59,12 @@ fun <B : Builder> B.setPositiveButton(
  *
  * @see Builder.setMessage
  */
-fun <B : Builder> B.setMessage(
+public fun <B : Builder> B.setMessage(
     message: AString,
-): B {
+): B = apply {
     setMessage(
         message(context),
     )
-    return this
 }
 
 /**
@@ -76,11 +72,10 @@ fun <B : Builder> B.setMessage(
  *
  * @see Builder.setTitle
  */
-fun <B : Builder> B.setTitle(
+public fun <B : Builder> B.setTitle(
     title: AString,
-): B {
+): B = apply {
     setTitle(
         title(context),
     )
-    return this
 }
diff --git a/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringSwitch.kt b/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringSwitch.kt
index 931a35b..2eac287 100644
--- a/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringSwitch.kt
+++ b/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringSwitch.kt
@@ -12,9 +12,9 @@ import xyz.tynn.astring.AString
  * Sets the text displayed when the button is not in the checked state
  * @see Switch.setTextOff
  */
-fun Switch.setTextOff(
+public fun Switch.setTextOff(
     textOff: AString,
-) = setTextOff(
+): Unit = setTextOff(
     textOff(context),
 )
 
@@ -22,8 +22,8 @@ fun Switch.setTextOff(
  * Sets the text displayed when the button is in the checked state
  * @see Switch.setTextOn
  */
-fun Switch.setTextOn(
+public fun Switch.setTextOn(
     textOn: AString,
-) = setTextOn(
+): Unit = setTextOn(
     textOn(context),
 )
diff --git a/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringTextSwitcher.kt b/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringTextSwitcher.kt
index 771a884..48d90d5 100644
--- a/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringTextSwitcher.kt
+++ b/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringTextSwitcher.kt
@@ -12,9 +12,9 @@ import xyz.tynn.astring.AString
  *  Sets the text of the text view that is currently showing
  * @see TextSwitcher.setCurrentText
  */
-fun TextSwitcher.setCurrentText(
+public fun TextSwitcher.setCurrentText(
     text: AString,
-) = setCurrentText(
+): Unit = setCurrentText(
     text(context),
 )
 
@@ -22,8 +22,8 @@ fun TextSwitcher.setCurrentText(
  * Sets the text of the next view and switches to the next view
  * @see TextSwitcher.setText
  */
-fun TextSwitcher.setText(
+public fun TextSwitcher.setText(
     text: AString,
-) = setText(
+): Unit = setText(
     text(context),
 )
diff --git a/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringTextView.kt b/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringTextView.kt
index 48901cf..668c5cd 100644
--- a/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringTextView.kt
+++ b/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringTextView.kt
@@ -13,9 +13,9 @@ import xyz.tynn.astring.AString
  * Appends the text to the display buffer
  * @see TextView.append
  */
-fun TextView.append(
+public fun TextView.append(
     text: AString,
-) = append(
+): Unit = append(
     text(context),
 )
 
@@ -23,11 +23,11 @@ fun TextView.append(
  * Appends the text to the display buffer
  * @see TextView.append
  */
-fun TextView.append(
+public fun TextView.append(
     text: AString,
     start: Int,
     end: Int,
-) = append(
+): Unit = append(
     text(context),
     start,
     end,
@@ -37,9 +37,9 @@ fun TextView.append(
  * Sets the error message
  * @see TextView.setError
  */
-fun TextView.setError(
+public fun TextView.setError(
     error: AString,
-) = setError(
+): Unit = setError(
     error(context),
 )
 
@@ -47,10 +47,10 @@ fun TextView.setError(
  * Sets the error message
  * @see TextView.setError
  */
-fun TextView.setError(
+public fun TextView.setError(
     error: AString,
     icon: Drawable?,
-) = setError(
+): Unit = setError(
     error(context),
     icon,
 )
@@ -59,9 +59,9 @@ fun TextView.setError(
  * Sets the text to be displayed when the text of the TextView is empty
  * @see TextView.setHint
  */
-fun TextView.setHint(
+public fun TextView.setHint(
     hint: AString,
-) = setHint(
+): Unit = setHint(
     hint(context),
 )
 
@@ -69,9 +69,9 @@ fun TextView.setHint(
  * Sets the text to be displayed
  * @see TextView.setText
  */
-fun TextView.setText(
+public fun TextView.setText(
     text: AString,
-) = setText(
+): Unit = setText(
     text(context),
 )
 
@@ -79,10 +79,10 @@ fun TextView.setText(
  * Sets the text to be displayed
  * @see TextView.setText
  */
-fun TextView.setText(
+public fun TextView.setText(
     text: AString,
     type: TextView.BufferType,
-) = setText(
+): Unit = setText(
     text(context),
     type,
 )
diff --git a/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringToast.kt b/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringToast.kt
index 257502b..2545d3e 100644
--- a/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringToast.kt
+++ b/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringToast.kt
@@ -25,7 +25,7 @@ private annotation class ToastDuration
  */
 @SuppressLint("ShowToast")
 @JvmName("makeText")
-fun makeToast(
+public fun makeToast(
     context: Context,
     text: AString,
     @ToastDuration duration: Int,
@@ -42,10 +42,10 @@ fun makeToast(
  *
  * @see Toast.setText
  */
-fun Toast.setText(
+public fun Toast.setText(
     context: Context,
     text: AString,
-) = setText(
+): Unit = setText(
     text(requireNonNull(context)),
 )
 
diff --git a/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringToggleButton.kt b/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringToggleButton.kt
index 92c3fe8..e7331cc 100644
--- a/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringToggleButton.kt
+++ b/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringToggleButton.kt
@@ -12,9 +12,9 @@ import xyz.tynn.astring.AString
  * Sets the text displayed when the button is not in the checked state
  * @see ToggleButton.setTextOff
  */
-fun ToggleButton.setTextOff(
+public fun ToggleButton.setTextOff(
     textOff: AString,
-) = setTextOff(
+): Unit = setTextOff(
     textOff(context),
 )
 
@@ -22,8 +22,8 @@ fun ToggleButton.setTextOff(
  * Sets the text displayed when the button is in the checked state
  * @see ToggleButton.setTextOn
  */
-fun ToggleButton.setTextOn(
+public fun ToggleButton.setTextOn(
     textOn: AString,
-) = setTextOn(
+): Unit = setTextOn(
     textOn(context),
 )
diff --git a/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringToolbar.kt b/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringToolbar.kt
index 2e4b197..cc7ac31 100644
--- a/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringToolbar.kt
+++ b/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringToolbar.kt
@@ -16,9 +16,9 @@ import xyz.tynn.astring.AString
  */
 @RequiresApi(LOLLIPOP)
 @Suppress("UsePropertyAccessSyntax")
-fun Toolbar.setLogoDescription(
+public fun Toolbar.setLogoDescription(
     description: AString,
-) = setLogoDescription(
+): Unit = setLogoDescription(
     description(context),
 )
 
@@ -27,9 +27,9 @@ fun Toolbar.setLogoDescription(
  * @see Toolbar.setSubtitle
  */
 @RequiresApi(LOLLIPOP)
-fun Toolbar.setSubtitle(
+public fun Toolbar.setSubtitle(
     subtitle: AString,
-) = setSubtitle(
+): Unit = setSubtitle(
     subtitle(context),
 )
 
@@ -38,8 +38,8 @@ fun Toolbar.setSubtitle(
  * @see Toolbar.setTitle
  */
 @RequiresApi(LOLLIPOP)
-fun Toolbar.setTitle(
+public fun Toolbar.setTitle(
     title: AString,
-) = setTitle(
+): Unit = setTitle(
     title(context),
 )
diff --git a/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringView.kt b/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringView.kt
index 4470976..99d6942 100644
--- a/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringView.kt
+++ b/extension/core/src/main/kotlin/xyz/tynn/astring/core/AStringView.kt
@@ -15,9 +15,9 @@ import androidx.core.view.ViewCompat.setStateDescription as setStateDescriptionC
  * Sets the accessibility pane title
  * @see View.setAccessibilityPaneTitle
  */
-fun View.setAccessibilityPaneTitle(
+public fun View.setAccessibilityPaneTitle(
     accessibilityPaneTitle: AString,
-) = setAccessibilityPaneTitle(
+): Unit = setAccessibilityPaneTitle(
     this,
     accessibilityPaneTitle(context),
 )
@@ -26,9 +26,9 @@ fun View.setAccessibilityPaneTitle(
  * Sets the content description
  * @see View.setContentDescription
  */
-fun View.setContentDescription(
+public fun View.setContentDescription(
     contentDescription: AString,
-) = setContentDescription(
+): Unit = setContentDescription(
     contentDescription(context),
 )
 
@@ -36,9 +36,9 @@ fun View.setContentDescription(
  * Sets the state description
  * @see View.setStateDescription
  */
-fun View.setStateDescription(
+public fun View.setStateDescription(
     stateDescription: AString,
-) = setStateDescriptionCompat(
+): Unit = setStateDescriptionCompat(
     this,
     stateDescription(context),
 )
@@ -47,9 +47,9 @@ fun View.setStateDescription(
  * Sets the tooltip for the view
  * @see View.setTooltipText
  */
-fun View.setTooltipText(
+public fun View.setTooltipText(
     tooltipText: AString,
-) = setTooltipText(
+): Unit = setTooltipText(
     this,
     tooltipText(context),
 )
diff --git a/extension/core/src/test/java/xyz/tynn/astring/core/AStringAlertDialogBuilderTest.java b/extension/core/src/test/java/xyz/tynn/astring/core/AStringAlertDialogBuilderTest.java
index cf6068c..5bd8d54 100644
--- a/extension/core/src/test/java/xyz/tynn/astring/core/AStringAlertDialogBuilderTest.java
+++ b/extension/core/src/test/java/xyz/tynn/astring/core/AStringAlertDialogBuilderTest.java
@@ -3,6 +3,10 @@
 
 package xyz.tynn.astring.core;
 
+import static org.junit.Assert.assertSame;
+import static xyz.tynn.astring.testing.mockk.MockKt.init;
+import static xyz.tynn.astring.testing.mockk.MockKt.verify;
+
 import android.app.AlertDialog;
 import android.content.DialogInterface.OnClickListener;
 
@@ -12,10 +16,6 @@
 import io.mockk.impl.annotations.MockK;
 import xyz.tynn.astring.AString;
 
-import static org.junit.Assert.assertSame;
-import static xyz.tynn.astring.testing.mockk.MockKt.init;
-import static xyz.tynn.astring.testing.mockk.MockKt.verify;
-
 public class AStringAlertDialogBuilderTest {
 
     @MockK
diff --git a/extension/core/src/test/java/xyz/tynn/astring/core/AStringAlertDialogTest.java b/extension/core/src/test/java/xyz/tynn/astring/core/AStringAlertDialogTest.java
index ad4d577..41cbee5 100644
--- a/extension/core/src/test/java/xyz/tynn/astring/core/AStringAlertDialogTest.java
+++ b/extension/core/src/test/java/xyz/tynn/astring/core/AStringAlertDialogTest.java
@@ -3,6 +3,10 @@
 
 package xyz.tynn.astring.core;
 
+import static android.content.DialogInterface.BUTTON_NEUTRAL;
+import static xyz.tynn.astring.testing.mockk.MockKt.init;
+import static xyz.tynn.astring.testing.mockk.MockKt.verify;
+
 import android.app.AlertDialog;
 import android.content.DialogInterface.OnClickListener;
 import android.os.Message;
@@ -13,10 +17,6 @@
 import io.mockk.impl.annotations.MockK;
 import xyz.tynn.astring.AString;
 
-import static android.content.DialogInterface.BUTTON_NEUTRAL;
-import static xyz.tynn.astring.testing.mockk.MockKt.init;
-import static xyz.tynn.astring.testing.mockk.MockKt.verify;
-
 public class AStringAlertDialogTest {
 
     @MockK
diff --git a/extension/core/src/test/java/xyz/tynn/astring/core/AStringSwitchTest.java b/extension/core/src/test/java/xyz/tynn/astring/core/AStringSwitchTest.java
index 0cc7900..adad0d0 100644
--- a/extension/core/src/test/java/xyz/tynn/astring/core/AStringSwitchTest.java
+++ b/extension/core/src/test/java/xyz/tynn/astring/core/AStringSwitchTest.java
@@ -3,6 +3,9 @@
 
 package xyz.tynn.astring.core;
 
+import static xyz.tynn.astring.testing.mockk.MockKt.init;
+import static xyz.tynn.astring.testing.mockk.MockKt.verify;
+
 import android.widget.Switch;
 
 import org.junit.Before;
@@ -11,9 +14,6 @@
 import io.mockk.impl.annotations.MockK;
 import xyz.tynn.astring.AString;
 
-import static xyz.tynn.astring.testing.mockk.MockKt.init;
-import static xyz.tynn.astring.testing.mockk.MockKt.verify;
-
 public class AStringSwitchTest {
 
     @MockK
diff --git a/extension/core/src/test/java/xyz/tynn/astring/core/AStringTextSwitcherTest.java b/extension/core/src/test/java/xyz/tynn/astring/core/AStringTextSwitcherTest.java
index 1d7664c..d1f50f9 100644
--- a/extension/core/src/test/java/xyz/tynn/astring/core/AStringTextSwitcherTest.java
+++ b/extension/core/src/test/java/xyz/tynn/astring/core/AStringTextSwitcherTest.java
@@ -3,6 +3,9 @@
 
 package xyz.tynn.astring.core;
 
+import static xyz.tynn.astring.testing.mockk.MockKt.init;
+import static xyz.tynn.astring.testing.mockk.MockKt.verify;
+
 import android.widget.TextSwitcher;
 
 import org.junit.Before;
@@ -11,9 +14,6 @@
 import io.mockk.impl.annotations.MockK;
 import xyz.tynn.astring.AString;
 
-import static xyz.tynn.astring.testing.mockk.MockKt.init;
-import static xyz.tynn.astring.testing.mockk.MockKt.verify;
-
 public class AStringTextSwitcherTest {
 
     @MockK
diff --git a/extension/core/src/test/java/xyz/tynn/astring/core/AStringTextViewTest.java b/extension/core/src/test/java/xyz/tynn/astring/core/AStringTextViewTest.java
index e89bd21..1e3f5b5 100644
--- a/extension/core/src/test/java/xyz/tynn/astring/core/AStringTextViewTest.java
+++ b/extension/core/src/test/java/xyz/tynn/astring/core/AStringTextViewTest.java
@@ -3,6 +3,10 @@
 
 package xyz.tynn.astring.core;
 
+import static android.widget.TextView.BufferType.SPANNABLE;
+import static xyz.tynn.astring.testing.mockk.MockKt.init;
+import static xyz.tynn.astring.testing.mockk.MockKt.verify;
+
 import android.graphics.drawable.ColorDrawable;
 import android.graphics.drawable.Drawable;
 import android.widget.TextView;
@@ -13,10 +17,6 @@
 import io.mockk.impl.annotations.MockK;
 import xyz.tynn.astring.AString;
 
-import static android.widget.TextView.BufferType.SPANNABLE;
-import static xyz.tynn.astring.testing.mockk.MockKt.init;
-import static xyz.tynn.astring.testing.mockk.MockKt.verify;
-
 public class AStringTextViewTest {
 
     @MockK
diff --git a/extension/core/src/test/java/xyz/tynn/astring/core/AStringToastTest.java b/extension/core/src/test/java/xyz/tynn/astring/core/AStringToastTest.java
index f6aeb92..db63352 100644
--- a/extension/core/src/test/java/xyz/tynn/astring/core/AStringToastTest.java
+++ b/extension/core/src/test/java/xyz/tynn/astring/core/AStringToastTest.java
@@ -3,6 +3,14 @@
 
 package xyz.tynn.astring.core;
 
+import static android.widget.Toast.LENGTH_LONG;
+import static org.junit.Assert.assertEquals;
+import static xyz.tynn.astring.testing.mockk.MockKt.clearAll;
+import static xyz.tynn.astring.testing.mockk.MockKt.init;
+import static xyz.tynn.astring.testing.mockk.MockKt.prepare;
+import static xyz.tynn.astring.testing.mockk.MockKt.verify;
+import static xyz.tynn.astring.testing.mockk.MockkCoreKt.mockkToastMakeText;
+
 import android.content.Context;
 import android.widget.Toast;
 
@@ -13,14 +21,6 @@
 import io.mockk.impl.annotations.MockK;
 import xyz.tynn.astring.AString;
 
-import static android.widget.Toast.LENGTH_LONG;
-import static org.junit.Assert.assertEquals;
-import static xyz.tynn.astring.core.MockkDefinitionsKt.mockkToastMakeText;
-import static xyz.tynn.astring.testing.mockk.MockKt.clearAll;
-import static xyz.tynn.astring.testing.mockk.MockKt.init;
-import static xyz.tynn.astring.testing.mockk.MockKt.prepare;
-import static xyz.tynn.astring.testing.mockk.MockKt.verify;
-
 public class AStringToastTest {
 
     @MockK
diff --git a/extension/core/src/test/java/xyz/tynn/astring/core/AStringToggleButtonTest.java b/extension/core/src/test/java/xyz/tynn/astring/core/AStringToggleButtonTest.java
index c1a1147..7deed8d 100644
--- a/extension/core/src/test/java/xyz/tynn/astring/core/AStringToggleButtonTest.java
+++ b/extension/core/src/test/java/xyz/tynn/astring/core/AStringToggleButtonTest.java
@@ -3,6 +3,9 @@
 
 package xyz.tynn.astring.core;
 
+import static xyz.tynn.astring.testing.mockk.MockKt.init;
+import static xyz.tynn.astring.testing.mockk.MockKt.verify;
+
 import android.widget.ToggleButton;
 
 import org.junit.Before;
@@ -11,9 +14,6 @@
 import io.mockk.impl.annotations.MockK;
 import xyz.tynn.astring.AString;
 
-import static xyz.tynn.astring.testing.mockk.MockKt.init;
-import static xyz.tynn.astring.testing.mockk.MockKt.verify;
-
 public class AStringToggleButtonTest {
 
     @MockK
diff --git a/extension/core/src/test/java/xyz/tynn/astring/core/AStringToolbarTest.java b/extension/core/src/test/java/xyz/tynn/astring/core/AStringToolbarTest.java
index 5886a2e..b666804 100644
--- a/extension/core/src/test/java/xyz/tynn/astring/core/AStringToolbarTest.java
+++ b/extension/core/src/test/java/xyz/tynn/astring/core/AStringToolbarTest.java
@@ -3,6 +3,9 @@
 
 package xyz.tynn.astring.core;
 
+import static xyz.tynn.astring.testing.mockk.MockKt.init;
+import static xyz.tynn.astring.testing.mockk.MockKt.verify;
+
 import android.widget.Toolbar;
 
 import org.junit.Before;
@@ -11,9 +14,6 @@
 import io.mockk.impl.annotations.MockK;
 import xyz.tynn.astring.AString;
 
-import static xyz.tynn.astring.testing.mockk.MockKt.init;
-import static xyz.tynn.astring.testing.mockk.MockKt.verify;
-
 public class AStringToolbarTest {
 
     @MockK
diff --git a/extension/core/src/test/java/xyz/tynn/astring/core/AStringViewTest.java b/extension/core/src/test/java/xyz/tynn/astring/core/AStringViewTest.java
index c528bc0..2be726a 100644
--- a/extension/core/src/test/java/xyz/tynn/astring/core/AStringViewTest.java
+++ b/extension/core/src/test/java/xyz/tynn/astring/core/AStringViewTest.java
@@ -3,6 +3,14 @@
 
 package xyz.tynn.astring.core;
 
+import static androidx.core.view.ViewCompat.setAccessibilityPaneTitle;
+import static androidx.core.view.ViewCompat.setStateDescription;
+import static androidx.core.view.ViewCompat.setTooltipText;
+import static xyz.tynn.astring.testing.mockk.MockKt.clearAll;
+import static xyz.tynn.astring.testing.mockk.MockKt.init;
+import static xyz.tynn.astring.testing.mockk.MockKt.prepare;
+import static xyz.tynn.astring.testing.mockk.MockKt.verify;
+
 import android.view.View;
 
 import androidx.core.view.ViewCompat;
@@ -14,14 +22,6 @@
 import io.mockk.impl.annotations.MockK;
 import xyz.tynn.astring.AString;
 
-import static androidx.core.view.ViewCompat.setAccessibilityPaneTitle;
-import static androidx.core.view.ViewCompat.setStateDescription;
-import static androidx.core.view.ViewCompat.setTooltipText;
-import static xyz.tynn.astring.testing.mockk.MockKt.clearAll;
-import static xyz.tynn.astring.testing.mockk.MockKt.init;
-import static xyz.tynn.astring.testing.mockk.MockKt.prepare;
-import static xyz.tynn.astring.testing.mockk.MockKt.verify;
-
 public class AStringViewTest {
 
     @MockK
diff --git a/extension/core/src/test/java/xyz/tynn/astring/core/MockkDefinitions.kt b/extension/core/src/test/java/xyz/tynn/astring/core/MockkDefinitions.kt
deleted file mode 100644
index 469e056..0000000
--- a/extension/core/src/test/java/xyz/tynn/astring/core/MockkDefinitions.kt
+++ /dev/null
@@ -1,13 +0,0 @@
-//  Copyright 2021 Christian Schmitz
-//  SPDX-License-Identifier: Apache-2.0
-
-package xyz.tynn.astring.core
-
-import android.widget.Toast
-import io.mockk.every
-
-fun mockkToastMakeText(
-    toast: Toast,
-) = every {
-    Toast.makeText(any(), any<CharSequence>(), any())
-} returns toast
diff --git a/extension/core/src/test/java/xyz/tynn/astring/testing/mockk/MockkCore.kt b/extension/core/src/test/java/xyz/tynn/astring/testing/mockk/MockkCore.kt
new file mode 100644
index 0000000..f32aba0
--- /dev/null
+++ b/extension/core/src/test/java/xyz/tynn/astring/testing/mockk/MockkCore.kt
@@ -0,0 +1,14 @@
+//  Copyright 2021 Christian Schmitz
+//  SPDX-License-Identifier: Apache-2.0
+
+package xyz.tynn.astring.testing.mockk
+
+import android.widget.Toast
+import android.widget.Toast.makeText
+import io.mockk.every
+
+public fun mockkToastMakeText(
+    toast: Toast,
+): Any = every {
+    makeText(any(), any<CharSequence>(), any())
+} returns toast
diff --git a/extension/material/src/main/kotlin/xyz/tynn/astring/material/AStringSnackbar.kt b/extension/material/src/main/kotlin/xyz/tynn/astring/material/AStringSnackbar.kt
index 3015cb9..e54bf69 100644
--- a/extension/material/src/main/kotlin/xyz/tynn/astring/material/AStringSnackbar.kt
+++ b/extension/material/src/main/kotlin/xyz/tynn/astring/material/AStringSnackbar.kt
@@ -20,25 +20,25 @@ import xyz.tynn.astring.AString
  * @see Snackbar.make
  */
 @JvmName("make")
-fun makeSnackbar(
+public fun makeSnackbar(
     view: View,
     text: AString,
     @Duration duration: Int,
-): Snackbar {
-    var textValue = text(view.context)
-    if (textValue == null) textValue = ""
-    return make(view, textValue, duration)
-}
+): Snackbar = make(
+    view,
+    text(view.context) ?: "",
+    duration,
+)
 
 /**
  * Sets the action to be displayed in this [Snackbar]
  *
  * @see Snackbar.setAction
  */
-fun Snackbar.setAction(
+public fun Snackbar.setAction(
     text: AString,
     listener: OnClickListener?,
-) = setAction(
+): Snackbar = setAction(
     text(context),
     listener,
 )
@@ -50,10 +50,8 @@ fun Snackbar.setAction(
  *
  * @see Snackbar.setText
  */
-fun Snackbar.setText(
+public fun Snackbar.setText(
     text: AString,
-): Snackbar {
-    var textValue = text(context)
-    if (textValue == null) textValue = ""
-    return setText(textValue)
-}
+): Snackbar = setText(
+    text(context) ?: "",
+)
diff --git a/extension/material/src/main/kotlin/xyz/tynn/astring/material/AStringTextInputLayout.kt b/extension/material/src/main/kotlin/xyz/tynn/astring/material/AStringTextInputLayout.kt
index 839c002..8ac950c 100644
--- a/extension/material/src/main/kotlin/xyz/tynn/astring/material/AStringTextInputLayout.kt
+++ b/extension/material/src/main/kotlin/xyz/tynn/astring/material/AStringTextInputLayout.kt
@@ -12,9 +12,9 @@ import xyz.tynn.astring.AString
  * Sets a content description for the end icon
  * @see TextInputLayout.setEndIconContentDescription
  */
-fun TextInputLayout.setEndIconContentDescription(
+public fun TextInputLayout.setEndIconContentDescription(
     endIconContentDescription: AString,
-) = setEndIconContentDescription(
+): Unit = setEndIconContentDescription(
     endIconContentDescription(context),
 )
 
@@ -22,9 +22,9 @@ fun TextInputLayout.setEndIconContentDescription(
  * Sets a content description for the error message
  * @see TextInputLayout.setErrorContentDescription
  */
-fun TextInputLayout.setErrorContentDescription(
+public fun TextInputLayout.setErrorContentDescription(
     errorContentDescription: AString,
-) = setErrorContentDescription(
+): Unit = setErrorContentDescription(
     errorContentDescription(context),
 )
 
@@ -32,9 +32,9 @@ fun TextInputLayout.setErrorContentDescription(
  * Sets an error message
  * @see TextInputLayout.setError
  */
-fun TextInputLayout.setError(
+public fun TextInputLayout.setError(
     error: AString,
-) = setError(
+): Unit = setError(
     error(context),
 )
 
@@ -42,9 +42,9 @@ fun TextInputLayout.setError(
  * Sets a helper message
  * @see TextInputLayout.setHelperText
  */
-fun TextInputLayout.setHelperText(
+public fun TextInputLayout.setHelperText(
     helperText: AString,
-) = setHelperText(
+): Unit = setHelperText(
     helperText(context),
 )
 
@@ -52,9 +52,9 @@ fun TextInputLayout.setHelperText(
  * Sets a hint
  * @see TextInputLayout.setHint
  */
-fun TextInputLayout.setHint(
+public fun TextInputLayout.setHint(
     hint: AString,
-) = setHint(
+): Unit = setHint(
     hint(context),
 )
 
@@ -62,9 +62,9 @@ fun TextInputLayout.setHint(
  * Sets a placeholder text
  * @see TextInputLayout.setPlaceholderText
  */
-fun TextInputLayout.setPlaceholderText(
+public fun TextInputLayout.setPlaceholderText(
     placeholderText: AString,
-) = setPlaceholderText(
+): Unit = setPlaceholderText(
     placeholderText(context),
 )
 
@@ -72,9 +72,9 @@ fun TextInputLayout.setPlaceholderText(
  * Sets a prefix text
  * @see TextInputLayout.setPrefixText
  */
-fun TextInputLayout.setPrefixText(
+public fun TextInputLayout.setPrefixText(
     prefixText: AString,
-) = setPrefixText(
+): Unit = setPrefixText(
     prefixText(context),
 )
 
@@ -82,9 +82,9 @@ fun TextInputLayout.setPrefixText(
  * Sets a content description for the start icon
  * @see TextInputLayout.setStartIconContentDescription
  */
-fun TextInputLayout.setStartIconContentDescription(
+public fun TextInputLayout.setStartIconContentDescription(
     startIconContentDescription: AString,
-) = setStartIconContentDescription(
+): Unit = setStartIconContentDescription(
     startIconContentDescription(context),
 )
 
@@ -92,8 +92,8 @@ fun TextInputLayout.setStartIconContentDescription(
  * Sets the suffix text
  * @see TextInputLayout.setSuffixText
  */
-fun TextInputLayout.setSuffixText(
+public fun TextInputLayout.setSuffixText(
     suffixText: AString,
-) = setSuffixText(
+): Unit = setSuffixText(
     suffixText(context),
 )
diff --git a/extension/material/src/test/java/xyz/tynn/astring/material/AStringMaterialAlertDialogBuilderTest.java b/extension/material/src/test/java/xyz/tynn/astring/material/AStringMaterialAlertDialogBuilderTest.java
index dc08b27..765bb0b 100644
--- a/extension/material/src/test/java/xyz/tynn/astring/material/AStringMaterialAlertDialogBuilderTest.java
+++ b/extension/material/src/test/java/xyz/tynn/astring/material/AStringMaterialAlertDialogBuilderTest.java
@@ -3,6 +3,10 @@
 
 package xyz.tynn.astring.material;
 
+import static org.junit.Assert.assertSame;
+import static xyz.tynn.astring.testing.mockk.MockKt.init;
+import static xyz.tynn.astring.testing.mockk.MockKt.verify;
+
 import android.content.DialogInterface.OnClickListener;
 
 import com.google.android.material.dialog.MaterialAlertDialogBuilder;
@@ -14,10 +18,6 @@
 import xyz.tynn.astring.AString;
 import xyz.tynn.astring.appcompat.AStringAlertDialogBuilder;
 
-import static org.junit.Assert.assertSame;
-import static xyz.tynn.astring.testing.mockk.MockKt.init;
-import static xyz.tynn.astring.testing.mockk.MockKt.verify;
-
 public class AStringMaterialAlertDialogBuilderTest {
 
     @MockK
diff --git a/extension/material/src/test/java/xyz/tynn/astring/material/AStringSnackbarTest.java b/extension/material/src/test/java/xyz/tynn/astring/material/AStringSnackbarTest.java
index dc15631..abdf336 100644
--- a/extension/material/src/test/java/xyz/tynn/astring/material/AStringSnackbarTest.java
+++ b/extension/material/src/test/java/xyz/tynn/astring/material/AStringSnackbarTest.java
@@ -3,6 +3,16 @@
 
 package xyz.tynn.astring.material;
 
+import static com.google.android.material.snackbar.BaseTransientBottomBar.LENGTH_LONG;
+import static org.junit.Assert.assertSame;
+import static xyz.tynn.astring.testing.mockk.MockKt.clearAll;
+import static xyz.tynn.astring.testing.mockk.MockKt.init;
+import static xyz.tynn.astring.testing.mockk.MockKt.prepare;
+import static xyz.tynn.astring.testing.mockk.MockKt.verify;
+import static xyz.tynn.astring.testing.mockk.MockkMaterialKt.mockkAStringInvoke;
+import static xyz.tynn.astring.testing.mockk.MockkMaterialKt.mockkGetMainLooper;
+import static xyz.tynn.astring.testing.mockk.MockkMaterialKt.mockkSnackbarMake;
+
 import android.os.Looper;
 import android.view.View;
 import android.view.View.OnClickListener;
@@ -16,16 +26,6 @@
 import io.mockk.impl.annotations.MockK;
 import xyz.tynn.astring.AString;
 
-import static com.google.android.material.snackbar.BaseTransientBottomBar.LENGTH_LONG;
-import static org.junit.Assert.assertSame;
-import static xyz.tynn.astring.material.MockkDefinitionsKt.mockkAStringInvoke;
-import static xyz.tynn.astring.material.MockkDefinitionsKt.mockkGetMainLooper;
-import static xyz.tynn.astring.material.MockkDefinitionsKt.mockkSnackbarMake;
-import static xyz.tynn.astring.testing.mockk.MockKt.clearAll;
-import static xyz.tynn.astring.testing.mockk.MockKt.init;
-import static xyz.tynn.astring.testing.mockk.MockKt.prepare;
-import static xyz.tynn.astring.testing.mockk.MockKt.verify;
-
 public class AStringSnackbarTest {
 
     @MockK
diff --git a/extension/material/src/test/java/xyz/tynn/astring/material/AStringTextInputLayoutTest.java b/extension/material/src/test/java/xyz/tynn/astring/material/AStringTextInputLayoutTest.java
index eb2dc10..6f40090 100644
--- a/extension/material/src/test/java/xyz/tynn/astring/material/AStringTextInputLayoutTest.java
+++ b/extension/material/src/test/java/xyz/tynn/astring/material/AStringTextInputLayoutTest.java
@@ -3,6 +3,9 @@
 
 package xyz.tynn.astring.material;
 
+import static xyz.tynn.astring.testing.mockk.MockKt.init;
+import static xyz.tynn.astring.testing.mockk.MockKt.verify;
+
 import com.google.android.material.textfield.TextInputLayout;
 
 import org.junit.Before;
@@ -11,9 +14,6 @@
 import io.mockk.impl.annotations.MockK;
 import xyz.tynn.astring.AString;
 
-import static xyz.tynn.astring.testing.mockk.MockKt.init;
-import static xyz.tynn.astring.testing.mockk.MockKt.verify;
-
 public class AStringTextInputLayoutTest {
 
     @MockK
diff --git a/extension/material/src/test/java/xyz/tynn/astring/material/MockkDefinitions.kt b/extension/material/src/test/java/xyz/tynn/astring/testing/mockk/MockkMaterial.kt
similarity index 50%
rename from extension/material/src/test/java/xyz/tynn/astring/material/MockkDefinitions.kt
rename to extension/material/src/test/java/xyz/tynn/astring/testing/mockk/MockkMaterial.kt
index 3d9796c..9e1c388 100644
--- a/extension/material/src/test/java/xyz/tynn/astring/material/MockkDefinitions.kt
+++ b/extension/material/src/test/java/xyz/tynn/astring/testing/mockk/MockkMaterial.kt
@@ -1,27 +1,28 @@
 //  Copyright 2021 Christian Schmitz
 //  SPDX-License-Identifier: Apache-2.0
 
-package xyz.tynn.astring.material
+package xyz.tynn.astring.testing.mockk
 
-import android.os.Looper
+import android.os.Looper.getMainLooper
 import com.google.android.material.snackbar.Snackbar
+import com.google.android.material.snackbar.Snackbar.make
 import io.mockk.every
 import io.mockk.mockk
 import xyz.tynn.astring.AString
 
-fun mockkGetMainLooper() = every {
-    Looper.getMainLooper()
+public fun mockkGetMainLooper(): Any = every {
+    getMainLooper()
 } returns mockk()
 
-fun mockkSnackbarMake(
+public fun mockkSnackbarMake(
     snackbar: Snackbar,
-) = every {
-    Snackbar.make(any(), any<CharSequence>(), any())
+): Any = every {
+    make(any(), any<CharSequence>(), any())
 } returns snackbar
 
-fun mockkAStringInvoke(
+public fun mockkAStringInvoke(
     string: AString,
     value: CharSequence?,
-) = every {
+): Any = every {
     string(any())
 } returns value
diff --git a/library.gradle b/library.gradle
new file mode 100644
index 0000000..74dd847
--- /dev/null
+++ b/library.gradle
@@ -0,0 +1,28 @@
+android {
+    libraryVariants.all {
+        it.generateBuildConfigProvider.configure {
+            enabled = false
+        }
+    }
+}
+
+pluginManager.withPlugin('org.jetbrains.kotlin.android') {
+    android {
+        kotlinOptions {
+            freeCompilerArgs += [
+                    '-Xno-call-assertions',
+                    '-Xno-param-assertions',
+                    '-Xno-receiver-assertions',
+                    '-Xexplicit-api=strict',
+            ]
+        }
+    }
+}
+
+tasks.withType(GenerateModuleMetadata).configureEach {
+    enabled = false
+}
+
+dependencies {
+    compileOnly 'org.jetbrains.kotlin:kotlin-stdlib'
+}