diff --git a/index.d.ts b/index.d.ts
index 605b6b5..47a9086 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -3,10 +3,7 @@
 
 /* auto-generated by NAPI-RS */
 
-export declare function setLogListener(
-  callback?: (...args: any[]) => any | undefined | null,
-  minLevel?: string | undefined | null,
-): void
+export declare function setLogListener(callback?: (...args: any[]) => any | undefined | null, minLevel?: string | undefined | null): void
 export declare function generateMnemonic(): string
 export interface MdkNodeOptions {
   network: string
@@ -29,11 +26,16 @@ export interface ReceivedPayment {
   amount: number
 }
 export interface PaymentEvent {
-  eventType: string
+  eventType: PaymentEventType
   paymentHash: string
   amountMsat?: number
   reason?: string
 }
+export const enum PaymentEventType {
+  Claimable = 0,
+  Received = 1,
+  Failed = 2
+}
 export interface NodeChannel {
   channelId: string
   counterpartyNodeId: string
@@ -76,18 +78,9 @@ export declare class MdkNode {
   syncRgs(doFullSync: boolean): number
   receivePayment(minThresholdMs: number, quietThresholdMs: number): Array<ReceivedPayment>
   getInvoice(amount: number, description: string, expirySecs: number): PaymentMetadata
-  getInvoiceWithScid(
-    humanReadableScid: string,
-    amount: number,
-    description: string,
-    expirySecs: number,
-  ): PaymentMetadata
+  getInvoiceWithScid(humanReadableScid: string, amount: number, description: string, expirySecs: number): PaymentMetadata
   getVariableAmountJitInvoice(description: string, expirySecs: number): PaymentMetadata
-  getVariableAmountJitInvoiceWithScid(
-    humanReadableScid: string,
-    description: string,
-    expirySecs: number,
-  ): PaymentMetadata
+  getVariableAmountJitInvoiceWithScid(humanReadableScid: string, description: string, expirySecs: number): PaymentMetadata
   payLnurl(lnurl: string, amountMsat: number, waitForPaymentSecs?: number | undefined | null): string
   payBolt11(bolt11Invoice: string): string
   payBolt12Offer(bolt12OfferString: string, amountMsat: number, waitForPaymentSecs?: number | undefined | null): string
diff --git a/index.js b/index.js
index 1f01f22..1cbda6c 100644
--- a/index.js
+++ b/index.js
@@ -62,7 +62,9 @@ switch (platform) {
   case 'win32':
     switch (arch) {
       case 'x64':
-        localFileExisted = existsSync(join(__dirname, 'lightning-js.win32-x64-msvc.node'))
+        localFileExisted = existsSync(
+          join(__dirname, 'lightning-js.win32-x64-msvc.node')
+        )
         try {
           if (localFileExisted) {
             nativeBinding = require('./lightning-js.win32-x64-msvc.node')
@@ -74,7 +76,9 @@ switch (platform) {
         }
         break
       case 'ia32':
-        localFileExisted = existsSync(join(__dirname, 'lightning-js.win32-ia32-msvc.node'))
+        localFileExisted = existsSync(
+          join(__dirname, 'lightning-js.win32-ia32-msvc.node')
+        )
         try {
           if (localFileExisted) {
             nativeBinding = require('./lightning-js.win32-ia32-msvc.node')
@@ -86,7 +90,9 @@ switch (platform) {
         }
         break
       case 'arm64':
-        localFileExisted = existsSync(join(__dirname, 'lightning-js.win32-arm64-msvc.node'))
+        localFileExisted = existsSync(
+          join(__dirname, 'lightning-js.win32-arm64-msvc.node')
+        )
         try {
           if (localFileExisted) {
             nativeBinding = require('./lightning-js.win32-arm64-msvc.node')
@@ -125,7 +131,9 @@ switch (platform) {
         }
         break
       case 'arm64':
-        localFileExisted = existsSync(join(__dirname, 'lightning-js.darwin-arm64.node'))
+        localFileExisted = existsSync(
+          join(__dirname, 'lightning-js.darwin-arm64.node')
+        )
         try {
           if (localFileExisted) {
             nativeBinding = require('./lightning-js.darwin-arm64.node')
@@ -159,7 +167,9 @@ switch (platform) {
     switch (arch) {
       case 'x64':
         if (isMusl()) {
-          localFileExisted = existsSync(join(__dirname, 'lightning-js.linux-x64-musl.node'))
+          localFileExisted = existsSync(
+            join(__dirname, 'lightning-js.linux-x64-musl.node')
+          )
           try {
             if (localFileExisted) {
               nativeBinding = require('./lightning-js.linux-x64-musl.node')
@@ -170,7 +180,9 @@ switch (platform) {
             loadError = e
           }
         } else {
-          localFileExisted = existsSync(join(__dirname, 'lightning-js.linux-x64-gnu.node'))
+          localFileExisted = existsSync(
+            join(__dirname, 'lightning-js.linux-x64-gnu.node')
+          )
           try {
             if (localFileExisted) {
               nativeBinding = require('./lightning-js.linux-x64-gnu.node')
@@ -184,7 +196,9 @@ switch (platform) {
         break
       case 'arm64':
         if (isMusl()) {
-          localFileExisted = existsSync(join(__dirname, 'lightning-js.linux-arm64-musl.node'))
+          localFileExisted = existsSync(
+            join(__dirname, 'lightning-js.linux-arm64-musl.node')
+          )
           try {
             if (localFileExisted) {
               nativeBinding = require('./lightning-js.linux-arm64-musl.node')
@@ -195,7 +209,9 @@ switch (platform) {
             loadError = e
           }
         } else {
-          localFileExisted = existsSync(join(__dirname, 'lightning-js.linux-arm64-gnu.node'))
+          localFileExisted = existsSync(
+            join(__dirname, 'lightning-js.linux-arm64-gnu.node')
+          )
           try {
             if (localFileExisted) {
               nativeBinding = require('./lightning-js.linux-arm64-gnu.node')
@@ -209,7 +225,9 @@ switch (platform) {
         break
       case 'arm':
         if (isMusl()) {
-          localFileExisted = existsSync(join(__dirname, 'lightning-js.linux-arm-musleabihf.node'))
+          localFileExisted = existsSync(
+            join(__dirname, 'lightning-js.linux-arm-musleabihf.node')
+          )
           try {
             if (localFileExisted) {
               nativeBinding = require('./lightning-js.linux-arm-musleabihf.node')
@@ -220,7 +238,9 @@ switch (platform) {
             loadError = e
           }
         } else {
-          localFileExisted = existsSync(join(__dirname, 'lightning-js.linux-arm-gnueabihf.node'))
+          localFileExisted = existsSync(
+            join(__dirname, 'lightning-js.linux-arm-gnueabihf.node')
+          )
           try {
             if (localFileExisted) {
               nativeBinding = require('./lightning-js.linux-arm-gnueabihf.node')
@@ -234,7 +254,9 @@ switch (platform) {
         break
       case 'riscv64':
         if (isMusl()) {
-          localFileExisted = existsSync(join(__dirname, 'lightning-js.linux-riscv64-musl.node'))
+          localFileExisted = existsSync(
+            join(__dirname, 'lightning-js.linux-riscv64-musl.node')
+          )
           try {
             if (localFileExisted) {
               nativeBinding = require('./lightning-js.linux-riscv64-musl.node')
@@ -245,7 +267,9 @@ switch (platform) {
             loadError = e
           }
         } else {
-          localFileExisted = existsSync(join(__dirname, 'lightning-js.linux-riscv64-gnu.node'))
+          localFileExisted = existsSync(
+            join(__dirname, 'lightning-js.linux-riscv64-gnu.node')
+          )
           try {
             if (localFileExisted) {
               nativeBinding = require('./lightning-js.linux-riscv64-gnu.node')
@@ -258,7 +282,9 @@ switch (platform) {
         }
         break
       case 's390x':
-        localFileExisted = existsSync(join(__dirname, 'lightning-js.linux-s390x-gnu.node'))
+        localFileExisted = existsSync(
+          join(__dirname, 'lightning-js.linux-s390x-gnu.node')
+        )
         try {
           if (localFileExisted) {
             nativeBinding = require('./lightning-js.linux-s390x-gnu.node')
@@ -284,8 +310,9 @@ if (!nativeBinding) {
   throw new Error(`Failed to load native binding`)
 }
 
-const { setLogListener, generateMnemonic, MdkNode } = nativeBinding
+const { setLogListener, generateMnemonic, PaymentEventType, MdkNode } = nativeBinding
 
 module.exports.setLogListener = setLogListener
 module.exports.generateMnemonic = generateMnemonic
+module.exports.PaymentEventType = PaymentEventType
 module.exports.MdkNode = MdkNode