added checks before reduce and added warn

src/main.ts

@@ -2,26 +2,27 @@ import { getCoinbaseInfo } from "./coinbase/fetcher.ts";
 import { getBanks } from "./nordigen/fetcher.ts";
 import { syncDatabases } from "./notion/notion.ts";
 import { type Bank } from "./types/custom.d.ts";
+import { warn } from "./util/logger.ts";
 
 const banks: Bank[] = []
 
 const hasNordigen = Deno.env.get("NORDIGEN_KEY") && Deno.env.get("NORDIGEN_SECRET")
 if (hasNordigen) {
     banks.push(...await getBanks())
 } else {
-    console.log("⚠️ Ignoring Nordigen because of missing env variables");
+    warn("Ignoring Nordigen because of missing env variables")
 }
 
 const hasCoinbase = Deno.env.get("COINBASE_KEY") && Deno.env.get("COINBASE_SECRET")
 if (hasCoinbase) {
     banks.push(await getCoinbaseInfo())
 } else {
-    console.log("⚠️ Ignoring Coinbase because of missing env variables");
+    warn("Ignoring Coinbase because of missing env variables")
 }
 
 const hasNotion = Deno.env.get("NOTION_TOKEN") && Deno.env.get("NOTION_DATABASE_ID")
 if (hasNotion) {
     await syncDatabases(banks)
 } else {
-    console.log("⚠️ Ignoring Notion because of missing env variables");
+    warn("Ignoring Notion because of missing env variables")
 }

src/nordigen/fetcher.ts

@@ -1,11 +1,16 @@
 import type { INordigenPagination, INordigenBank, INordigenRequisition, INordigenTransactions, INordigenBankAccount, INordigenBankAccountDetail, Bank, Account, INordigenBankAccountBalances, Transaction } from "../types/index.d.ts";
 import { get } from "./util.ts";
-import { log } from "../util/logger.ts";
+import { log, warn } from "../util/logger.ts";
 
 async function getRequisitions() {
     const allData = await get<INordigenPagination<INordigenRequisition>>(`/requisitions/`)
     const data = allData.results.filter(d => d.status === "LN" && d.accounts.length > 0)
 
+    if (data.length === 0) {
+        warn("We couldn't fetch your requisitions. Make sure you have linked at least one account in Nordigen.")
+        return []
+    }
+
     const nAccounts = data.map(d => d.accounts.length).reduce((a, b) => a + b)
     log(`Fetched ${data.length} requisitions with ${nAccounts} accounts`)
 
@@ -49,6 +54,8 @@ async function getAccount(accountId: string) {
 
 export async function getBanks() {
     const requisitions = await getRequisitions()
+    if (requisitions.length === 0) return []
+
     const bankIds = requisitions.map(r => r.institution_id)
     const requests = bankIds.map((id) => get<INordigenBank>(`/institutions/${id}`))
     const data = await Promise.all(requests)

src/util/logger.ts

@@ -8,7 +8,7 @@ function sensibleData(str: string) {
         final = final.replace(sensibleDataPath, "***...***")
     if (sensibleDataQuery)
         final = final.replace(sensibleDataQuery, "***...***")
- 
+
     return final
 }
 
@@ -26,4 +26,9 @@ export function log(str: string) {
         showSeparator = true
     }
     console.log(`${emoji}  ${sensibleData(str)}${showSeparator ? separator : ''}`)
-}
+}
+
+export function warn(str: string) {
+    const emoji = "⚠️"
+    console.log(`${emoji}  ${sensibleData(str)}${separator}`)
+}