StripeTerminalReactNativeModule reduced scope

android/build.gradle

@@ -127,4 +127,5 @@ dependencies {
   implementation 'com.stripe:stripeterminal:2.7.1'
   implementation 'com.google.code.gson:gson:2.3.1'
   implementation 'com.squareup.okhttp3:okhttp:4.9.1'
+  implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.6.0'
 }

android/src/main/java/com/stripeterminalreactnative/Errors.kt

@@ -2,28 +2,46 @@ package com.stripeterminalreactnative
 
 import com.facebook.react.bridge.Promise
 import com.facebook.react.bridge.ReadableMap
+import com.facebook.react.bridge.WritableNativeMap
 import com.stripe.stripeterminal.external.models.TerminalException
+import com.stripe.stripeterminal.external.models.TerminalException.TerminalErrorCode
+import kotlinx.coroutines.CancellationException
 import kotlin.jvm.Throws
 
-internal fun createError(exception: TerminalException): ReadableMap = nativeMapOf {
+internal fun createError(throwable: Throwable): ReadableMap = nativeMapOf {
     putMap("error", nativeMapOf {
-        putString("message", exception.errorMessage)
-        putString("code", exception.errorCode.toString())
+        writeError(throwable)
     })
 }
 
+private fun WritableNativeMap.writeError(throwable: Throwable?) {
+    when (throwable) {
+        is TerminalException -> {
+            putString("message", throwable.errorMessage)
+            putString("code", throwable.errorCode.toString())
+        }
+        is CancellationException -> {
+            writeError(throwable.cause)
+        }
+        else -> {
+            putString("message", throwable?.message ?: "Unknown error")
+            putString("code", TerminalErrorCode.UNEXPECTED_SDK_ERROR.toString())
+        }
+    }
+}
+
 @Throws(TerminalException::class)
 internal fun <T> requireCancelable(cancelable: T?, lazyMessage: () -> String): T {
     return cancelable ?: throw TerminalException(
-        TerminalException.TerminalErrorCode.CANCEL_FAILED,
+        TerminalErrorCode.CANCEL_FAILED,
         lazyMessage()
     )
 }
 
 @Throws(TerminalException::class)
 internal fun <T> requireParam(input: T?, lazyMessage: () -> String): T {
     return input ?: throw TerminalException(
-        TerminalException.TerminalErrorCode.INVALID_REQUIRED_PARAMETER,
+        TerminalErrorCode.INVALID_REQUIRED_PARAMETER,
         lazyMessage()
     )
 }

android/src/main/java/com/stripeterminalreactnative/ReactExtensions.kt

@@ -0,0 +1,18 @@
+package com.stripeterminalreactnative
+
+import com.facebook.react.bridge.ReactApplicationContext
+import com.facebook.react.bridge.WritableNativeMap
+import com.facebook.react.modules.core.DeviceEventManagerModule
+
+internal object ReactExtensions {
+
+    fun ReactApplicationContext.sendEvent(
+        eventName: String,
+        resultBuilder: WritableNativeMap.() -> Unit
+    ) {
+        getJSModule(DeviceEventManagerModule.RCTDeviceEventEmitter::class.java)
+            .emit(eventName, nativeMapOf {
+                resultBuilder()
+            })
+    }
+}