diff --git a/src/signals.ts b/src/signals.ts
index 87e9bd06..95d3999d 100644
--- a/src/signals.ts
+++ b/src/signals.ts
@@ -14,7 +14,7 @@ export const [assetSelected, setAssetSelected] = createSignal(null);
 export const [asset, setAsset] = createSignal(defaultSelection);
 export const [reverse, setReverse] = createSignal(true);
 
-export const [config, setConfig] = createSignal(0);
+export const [config, setConfig] = createSignal({});
 
 export const [online, setOnline] = createSignal(true);
 export const [wasmSupported, setWasmSupported] = createSignal(true);
diff --git a/tests/History.spec.js b/tests/History.spec.ts
similarity index 100%
rename from tests/History.spec.js
rename to tests/History.spec.ts
diff --git a/tests/Nav.spec.jsx b/tests/Nav.spec.tsx
similarity index 94%
rename from tests/Nav.spec.jsx
rename to tests/Nav.spec.tsx
index fb3ed6de..82776b9f 100644
--- a/tests/Nav.spec.jsx
+++ b/tests/Nav.spec.tsx
@@ -1,6 +1,6 @@
 import { Router } from "@solidjs/router";
 import { render, screen } from "@solidjs/testing-library";
-import { describe, expect } from "vitest";
+import { describe, expect, test } from "vitest";
 
 import Nav from "../src/Nav";
 
diff --git a/tests/components/AssetSelect.spec.jsx b/tests/components/AssetSelect.spec.tsx
similarity index 98%
rename from tests/components/AssetSelect.spec.jsx
rename to tests/components/AssetSelect.spec.tsx
index d2eff919..1cddbe4c 100644
--- a/tests/components/AssetSelect.spec.jsx
+++ b/tests/components/AssetSelect.spec.tsx
@@ -1,5 +1,5 @@
 import { fireEvent, render, screen } from "@solidjs/testing-library";
-import { describe, expect, test } from "vitest";
+import { describe, expect, test, vi } from "vitest";
 
 import SelectAsset from "../../src/components/AssetSelect";
 import { BTC, LBTC, LN, sideReceive, sideSend } from "../../src/consts";
diff --git a/tests/components/ClickableAmount.spec.jsx b/tests/components/ClickableAmount.spec.jsx
index a90664a9..7b710838 100644
--- a/tests/components/ClickableAmount.spec.jsx
+++ b/tests/components/ClickableAmount.spec.jsx
@@ -1,5 +1,5 @@
 import { fireEvent, render } from "@solidjs/testing-library";
-import { describe, expect, vitest } from "vitest";
+import { describe, expect, test, vitest } from "vitest";
 
 import ClickableAmount from "../../src/components/ClickableAmount";
 import t from "../../src/i18n";
diff --git a/tests/components/Error.spec.jsx b/tests/components/Error.spec.tsx
similarity index 90%
rename from tests/components/Error.spec.jsx
rename to tests/components/Error.spec.tsx
index 65c40624..a4c4a8f1 100644
--- a/tests/components/Error.spec.jsx
+++ b/tests/components/Error.spec.tsx
@@ -1,4 +1,5 @@
 import { render, screen } from "@solidjs/testing-library";
+import { describe, expect, test } from "vitest";
 
 import Error from "../../src/Error";
 import i18n from "../../src/i18n/i18n";
diff --git a/tests/components/Fees.spec.jsx b/tests/components/Fees.spec.tsx
similarity index 94%
rename from tests/components/Fees.spec.jsx
rename to tests/components/Fees.spec.tsx
index 10f7d5c4..90497f91 100644
--- a/tests/components/Fees.spec.jsx
+++ b/tests/components/Fees.spec.tsx
@@ -1,5 +1,5 @@
 import { render } from "@solidjs/testing-library";
-import { beforeAll, beforeEach, expect, vi } from "vitest";
+import { beforeAll, beforeEach, describe, expect, test, vi } from "vitest";
 
 import Fees from "../../src/components/Fees";
 import * as signals from "../../src/signals";
diff --git a/tests/components/Reverse.spec.jsx b/tests/components/Reverse.spec.tsx
similarity index 88%
rename from tests/components/Reverse.spec.jsx
rename to tests/components/Reverse.spec.tsx
index 30d261ba..fb889af2 100644
--- a/tests/components/Reverse.spec.jsx
+++ b/tests/components/Reverse.spec.tsx
@@ -2,7 +2,7 @@ import { fireEvent, render } from "@solidjs/testing-library";
 import { describe, expect, test } from "vitest";
 
 import Reverse from "../../src/components/Reverse";
-import { BTC, LN } from "../../src/config";
+import { BTC, LN } from "../../src/consts";
 import {
     assetReceive,
     assetSend,
@@ -16,7 +16,7 @@ describe("Reverse", () => {
         setAssetSend(BTC);
         setAssetReceive(LN);
 
-        expect(reverse()).toEqual(true);
+        expect(reverse()).toEqual(false);
 
         const {
             container: { firstChild: flip },
diff --git a/tests/config.js b/tests/config.ts
similarity index 100%
rename from tests/config.js
rename to tests/config.ts
diff --git a/tests/i18n/detect.spec.js b/tests/i18n/detect.spec.ts
similarity index 94%
rename from tests/i18n/detect.spec.js
rename to tests/i18n/detect.spec.ts
index 9fed1366..98415e5d 100644
--- a/tests/i18n/detect.spec.js
+++ b/tests/i18n/detect.spec.ts
@@ -1,4 +1,4 @@
-import { describe, expect } from "vitest";
+import { describe, expect, test } from "vitest";
 
 import { defaultLanguage } from "../../src/config";
 import { getNavigatorLanguage } from "../../src/i18n/detect";
diff --git a/tests/i18n/i18n.spec.js b/tests/i18n/i18n.spec.ts
similarity index 94%
rename from tests/i18n/i18n.spec.js
rename to tests/i18n/i18n.spec.ts
index edd12a4d..e3967ed7 100644
--- a/tests/i18n/i18n.spec.js
+++ b/tests/i18n/i18n.spec.ts
@@ -1,4 +1,4 @@
-import { describe, expect } from "vitest";
+import { describe, expect, test } from "vitest";
 
 import { rawDict } from "../../src/i18n/i18n";
 
diff --git a/tests/signals.spec.js b/tests/signals.spec.ts
similarity index 96%
rename from tests/signals.spec.js
rename to tests/signals.spec.ts
index 319cfc8e..59e19751 100644
--- a/tests/signals.spec.js
+++ b/tests/signals.spec.ts
@@ -1,4 +1,4 @@
-import { expect } from "vitest";
+import { describe, expect, test } from "vitest";
 
 import { BTC, LBTC, LN } from "../src/consts";
 import {
diff --git a/tests/utils/denomination.spec.js b/tests/utils/denomination.spec.ts
similarity index 98%
rename from tests/utils/denomination.spec.js
rename to tests/utils/denomination.spec.ts
index 16f46366..a2a59104 100644
--- a/tests/utils/denomination.spec.js
+++ b/tests/utils/denomination.spec.ts
@@ -1,3 +1,5 @@
+import { beforeAll, describe, expect, test } from "vitest";
+
 import { setDenomination, setMaximum } from "../../src/signals";
 import {
     calculateDigits,
diff --git a/tests/utils/feeChecker.spec.js b/tests/utils/feeChecker.spec.ts
similarity index 95%
rename from tests/utils/feeChecker.spec.js
rename to tests/utils/feeChecker.spec.ts
index aea7f0f1..eeb78203 100644
--- a/tests/utils/feeChecker.spec.js
+++ b/tests/utils/feeChecker.spec.ts
@@ -1,3 +1,5 @@
+import { beforeAll, describe, expect, test } from "vitest";
+
 import { BTC, LBTC } from "../../src/consts";
 import { setAsset, setConfig } from "../../src/signals";
 import { feeChecker } from "../../src/utils/feeChecker";
@@ -60,7 +62,7 @@ const cfg = {
     },
 };
 
-const deepCopy = (value) => JSON.parse(JSON.stringify(value));
+const deepCopy = (value: object) => JSON.parse(JSON.stringify(value));
 
 describe("feeChecker", () => {
     beforeAll(() => {
diff --git a/tests/utils/webln.spec.ts b/tests/utils/webln.spec.ts
index fed5240d..c6d9dfdd 100644
--- a/tests/utils/webln.spec.ts
+++ b/tests/utils/webln.spec.ts
@@ -6,7 +6,6 @@ import { detectWebLNProvider, enableWebln } from "../../src/utils/webln";
 describe("WebLN", () => {
     beforeEach(() => {
         log.error = vitest.fn();
-        window.webln = undefined;
     });
 
     test("should not detect WebLN when no injected provider is present", async () => {