fixing types and other

.gitignore

@@ -104,3 +104,6 @@ typings/
 
 # Stores VSCode versions used for testing VSCode extensions
 .vscode-test
+
+/dist
+.idea

src/services/paymentService.ts

@@ -14,7 +14,7 @@ interface PaymentCreateRequest {
   // Amount, in the lowest denomination for the currency (e.g. pence in GBP, cents
   // in EUR).
 
-  amount: string;
+  amount: number;
 
   // The amount to be deducted from the payment as the OAuth app's fee, in the
   // lowest denomination for the currency (e.g. pence in GBP, cents in EUR).

src/types/Types.ts

@@ -2441,7 +2441,7 @@ export enum PayerAuthorisationStatus {
 export interface Payment {
   // Amount, in the lowest denomination for the currency (e.g. pence in GBP,
   // cents in EUR).
-  amount: string;
+  amount: number;
 
   // Amount [refunded](#core-endpoints-refunds), in the lowest denomination for
   // the currency (e.g. pence in GBP, cents in EUR).

src/webhooks.ts

@@ -9,9 +9,9 @@
  * is genuinely from GoCardless, and secondly it parses each `event` object in the
  * JSON object into an `GoCardless.Event` class.
  */
-
-const cryptoJS = require('crypto-js');
-const safeCompare = require('buffer-equal-constant-time');
+import cryptoJS from 'crypto-js';
+import safeCompare from 'buffer-equal-constant-time';
+import type {Event} from './types/Types';
 
 function InvalidSignatureError() {
   this.message =
@@ -29,11 +29,10 @@ function InvalidSignatureError() {
  * @signatureHeader [string]: The signature included in the webhook request, as specified
  *   by the `Webhook-Signature` header.
  */
-function parse(body, webhookSecret, signatureHeader) {
+ function parse(body: string, webhookSecret: string, signatureHeader: string) {
   verifySignature(body, webhookSecret, signatureHeader);
 
-  const eventsData = JSON.parse(body)['events'];
-  return eventsData.map(eventJson => eventJson);
+  return JSON.parse(body)['events'] as Event[];
 }
 
 /**
@@ -46,7 +45,7 @@ function parse(body, webhookSecret, signatureHeader) {
  * @signatureHeader [string]: The signature included in the webhook request, as specified
  *   by the `Webhook-Signature` header.
  */
-function verifySignature(body, webhookSecret, signatureHeader) {
+ function verifySignature(body:string, webhookSecret:string, signatureHeader:string) {
   const rawDigest = cryptoJS.HmacSHA256(body, webhookSecret);
 
   const bufferDigest = Buffer.from(rawDigest.toString(cryptoJS.enc.Hex));
@@ -57,7 +56,8 @@ function verifySignature(body, webhookSecret, signatureHeader) {
   }
 }
 
-module.exports = {
+export {
   parse,
-  InvalidSignatureError,
-};
+  verifySignature,
+  InvalidSignatureError
+}

tsconfig.json

@@ -1,7 +1,6 @@
 {
   "compilerOptions": {
       "module": "commonjs",
-      "moduleResolution": "Node",
       "newLine": "lf",
       "esModuleInterop": true,
       "allowSyntheticDefaultImports": true,