Porting #817

FasterXML/jackson-module-kotlin#817

src/main/kotlin/io/github/projectmapk/jackson/module/kogera/Extensions.kt

@@ -62,7 +62,7 @@ public inline fun <reified T> ObjectMapper.readValue(src: ByteArray): T = readVa
 
 public inline fun <reified T> ObjectMapper.treeToValue(n: TreeNode): T =
     readValue(this.treeAsTokens(n), jacksonTypeRef<T>())
-public inline fun <reified T> ObjectMapper.convertValue(from: Any): T = convertValue(from, jacksonTypeRef<T>())
+public inline fun <reified T> ObjectMapper.convertValue(from: Any?): T = convertValue(from, jacksonTypeRef<T>())
 
 public inline fun <reified T> ObjectReader.readValueTyped(jp: JsonParser): T = readValue(jp, jacksonTypeRef<T>())
 public inline fun <reified T> ObjectReader.readValuesTyped(jp: JsonParser): Iterator<T> =

src/test/kotlin/io/github/projectmapk/jackson/module/kogera/zPorted/test/github/GitHub757.kt

@@ -0,0 +1,22 @@
+package io.github.projectmapk.jackson.module.kogera.zPorted.test.github
+
+import com.fasterxml.jackson.databind.json.JsonMapper
+import io.github.projectmapk.jackson.module.kogera.KotlinFeature
+import io.github.projectmapk.jackson.module.kogera.KotlinModule
+import io.github.projectmapk.jackson.module.kogera.convertValue
+import org.junit.jupiter.api.Assertions.assertNull
+import org.junit.jupiter.api.Test
+
+class GitHub757 {
+    @Test
+    fun test() {
+        val kotlinModule = KotlinModule.Builder()
+            .enable(KotlinFeature.StrictNullChecks)
+            .build()
+        val mapper = JsonMapper.builder()
+            .addModule(kotlinModule)
+            .build()
+        val convertValue = mapper.convertValue<String?>(null)
+        assertNull(convertValue)
+    }
+}