From d14c03e3f2e3806e17852a440d2a39f377570758 Mon Sep 17 00:00:00 2001
From: Adam Soltys <adam@coinos.io>
Date: Fri, 6 Mar 2026 15:07:08 -0800
Subject: lint

---
 .oxlintrc.json                                     |  2 +-
 package-lock.json                                  | 55 ++++++++++++++++++++++
 package.json                                       |  2 +
 perf-test.ts                                       |  3 --
 src/components/AppHeader.svelte                    | 19 ++++----
 src/lib/keyWrapping.ts                             |  4 +-
 src/lib/nip07.ts                                   |  2 +-
 src/lib/nip17.ts                                   |  2 +-
 .../(app)/[username]/(profile)/+layout.server.ts   |  3 +-
 .../(app)/[username]/(profile)/+page.server.ts     |  4 +-
 .../(app)/send/bitcoin/[address]/+layout.server.ts |  2 +-
 src/routes/(app)/settings/+layout.server.ts        |  2 +-
 src/routes/(app)/settings/+layout.svelte           |  2 +-
 src/routes/(app)/settings/security/+page.svelte    |  2 +-
 src/routes/(static)/register/auth/+page.server.ts  |  2 +-
 test/e2e/custodial-receive-bitcoin.spec.ts         |  1 -
 test/e2e/custodial-receive-lightning.spec.ts       |  1 -
 test/e2e/custodial-send-external-ln.spec.ts        |  1 -
 test/e2e/custodial-send-lightning.spec.ts          |  1 -
 test/e2e/helpers.ts                                |  4 +-
 test/e2e/mls-messaging.spec.ts                     |  2 +-
 test/e2e/vault-receive-bitcoin.spec.ts             |  1 -
 test/e2e/vault-send-bob-btc.spec.ts                |  1 -
 test/e2e/vault-send-to-custodial-btc.spec.ts       |  2 -
 24 files changed, 81 insertions(+), 39 deletions(-)

diff --git a/.oxlintrc.json b/.oxlintrc.json
index eb548825..e2a4d331 100644
--- a/.oxlintrc.json
+++ b/.oxlintrc.json
@@ -2,7 +2,7 @@
   "$schema": "./node_modules/oxlint/configuration_schema.json",
   "plugins": ["typescript", "unicorn", "oxc"],
   "categories": {
-    "correctness": "warn"
+    "correctness": "error"
   },
   "rules": {
     "no-self-assign": "off",
diff --git a/package-lock.json b/package-lock.json
index 30ae0c97..3cc58dae 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -52,6 +52,7 @@
         "rollup-plugin-visualizer": "^6.0.5",
         "svelte": "^5.49.1",
         "svelte-adapter-bun": "^1.0.1",
+        "svelte-check": "^4.4.4",
         "svelte-confetti": "^2.3.2",
         "svelte-preprocess": "^6.0.3",
         "sveltekit-i18n": "^2.4.2",
@@ -3342,6 +3343,22 @@
         "regexp-to-ast": "0.5.0"
       }
     },
+    "node_modules/chokidar": {
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-4.0.3.tgz",
+      "integrity": "sha512-Qgzu8kfBvo+cA4962jnP1KkS6Dop5NS6g7R5LFYJr4b8Ub94PPQXUksCw9PvXoeXPRRddRNC5C1JQUR2SMGtnA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "readdirp": "^4.0.1"
+      },
+      "engines": {
+        "node": ">= 14.16.0"
+      },
+      "funding": {
+        "url": "https://paulmillr.com/funding/"
+      }
+    },
     "node_modules/chownr": {
       "version": "3.0.0",
       "dev": true,
@@ -7115,6 +7132,20 @@
         "node": ">= 6"
       }
     },
+    "node_modules/readdirp": {
+      "version": "4.1.2",
+      "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-4.1.2.tgz",
+      "integrity": "sha512-GDhwkLfywWL2s6vEjyhri+eXmfH6j1L7JE27WhqLeYzoh/A3DBaYGEj2H/HFZCn/kMfim73FXxEJTw06WtxQwg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">= 14.18.0"
+      },
+      "funding": {
+        "type": "individual",
+        "url": "https://paulmillr.com/funding/"
+      }
+    },
     "node_modules/redent": {
       "version": "3.0.0",
       "dev": true,
@@ -7932,6 +7963,30 @@
         "typescript": "^5"
       }
     },
+    "node_modules/svelte-check": {
+      "version": "4.4.4",
+      "resolved": "https://registry.npmjs.org/svelte-check/-/svelte-check-4.4.4.tgz",
+      "integrity": "sha512-F1pGqXc710Oi/wTI4d/x7d6lgPwwfx1U6w3Q35n4xsC2e8C/yN2sM1+mWxjlMcpAfWucjlq4vPi+P4FZ8a14sQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@jridgewell/trace-mapping": "^0.3.25",
+        "chokidar": "^4.0.1",
+        "fdir": "^6.2.0",
+        "picocolors": "^1.0.0",
+        "sade": "^1.7.4"
+      },
+      "bin": {
+        "svelte-check": "bin/svelte-check"
+      },
+      "engines": {
+        "node": ">= 18.0.0"
+      },
+      "peerDependencies": {
+        "svelte": "^4.0.0 || ^5.0.0-next.0",
+        "typescript": ">=5.0.0"
+      }
+    },
     "node_modules/svelte-confetti": {
       "version": "2.3.2",
       "dev": true,
diff --git a/package.json b/package.json
index d23caca3..fc9f4398 100644
--- a/package.json
+++ b/package.json
@@ -14,6 +14,7 @@
     "test:e2e:ark:headed": "test/e2e/run.sh headed",
     "test:e2e:ark:watch": "test/e2e/run.sh watch",
     "test:e2e:ark:debug": "test/e2e/run.sh debug",
+    "check": "svelte-check --tsconfig ./tsconfig.json",
     "lint": "oxlint . && oxfmt --check .",
     "lint:fix": "oxlint --fix . && oxfmt .",
     "format": "oxfmt .",
@@ -64,6 +65,7 @@
     "rollup-plugin-visualizer": "^6.0.5",
     "svelte": "^5.49.1",
     "svelte-adapter-bun": "^1.0.1",
+    "svelte-check": "^4.4.4",
     "svelte-confetti": "^2.3.2",
     "svelte-preprocess": "^6.0.3",
     "sveltekit-i18n": "^2.4.2",
diff --git a/perf-test.ts b/perf-test.ts
index 082d9113..74bde919 100644
--- a/perf-test.ts
+++ b/perf-test.ts
@@ -7,9 +7,6 @@ const BASE = "http://localhost:5173";
   const context = await browser.newContext();
   const page = await context.newPage();
 
-  // Collect all network requests during navigation
-  const requests: { url: string; duration: number; size: number }[] = [];
-
   // Login as bob
   console.log("=== Logging in as bob ===");
   await page.goto(`${BASE}/login`);
diff --git a/src/components/AppHeader.svelte b/src/components/AppHeader.svelte
index 0d70bf49..9b8eb3c5 100644
--- a/src/components/AppHeader.svelte
+++ b/src/components/AppHeader.svelte
@@ -24,16 +24,15 @@
 
   let isHome = $derived($page.url.pathname === `/${user?.username}`);
 
-  const links = $derived([
-    ...(!isHome
-      ? [
-          {
-            href: `/${user?.username}`,
-            icon: PhHouseBold,
-            label: "Home",
-          },
-        ]
-      : []),
+  const links = $derived(!isHome
+    ? [
+        {
+          href: `/${user?.username}`,
+          icon: PhHouseBold,
+          label: "Home",
+        },
+      ]
+    : [
     // {
     //   href: `/scan`,
     //   icon: "ph:camera-bold",
diff --git a/src/lib/keyWrapping.ts b/src/lib/keyWrapping.ts
index 971b929c..31cb1e5c 100644
--- a/src/lib/keyWrapping.ts
+++ b/src/lib/keyWrapping.ts
@@ -1,5 +1,5 @@
 import { prfEncrypt, prfDecrypt } from "$lib/crypto";
-import { rememberPrfKey, defaultRememberForMs, getCachedPrfKey } from "$lib/passwordCache";
+import { rememberPrfKey, defaultRememberForMs } from "$lib/passwordCache";
 import { post } from "$lib/utils";
 
 export function generateCanonicalKey(): ArrayBuffer {
@@ -36,7 +36,7 @@ export async function resolveCanonicalKey(
   // Migration: old PRF key becomes canonical key
   const canonicalKey = oldPrfKey;
   const wrapped = await wrapCanonicalKey(wrappingKey, canonicalKey);
-  const updated = { ...(encryptedKeys || {}), [methodId]: wrapped };
+  const updated = { ...encryptedKeys, [methodId]: wrapped };
   await saveEncryptedKeys(updated);
   rememberPrfKey(canonicalKey, defaultRememberForMs);
   return { canonicalKey, encryptedKeys: updated };
diff --git a/src/lib/nip07.ts b/src/lib/nip07.ts
index 691e3bcd..dc774186 100644
--- a/src/lib/nip07.ts
+++ b/src/lib/nip07.ts
@@ -65,7 +65,7 @@ export const ensureSigner = async (userPubkey: string): Promise<Uint8Array | nul
       if (extPubkey === userPubkey) {
         return null; // Use NIP-07
       }
-    } catch (e) {
+    } catch {
       // Extension didn't work, fall through to signer modal
     }
   }
diff --git a/src/lib/nip17.ts b/src/lib/nip17.ts
index c6021339..d4718e48 100644
--- a/src/lib/nip17.ts
+++ b/src/lib/nip17.ts
@@ -1,4 +1,4 @@
-import { bytesToHex, hexToBytes } from "@noble/hashes/utils.js";
+import { bytesToHex } from "@noble/hashes/utils.js";
 
 import { finalizeEvent, getEventHash, generateSecretKey, getPublicKey } from "nostr-tools/pure";
 import { SimplePool } from "nostr-tools/pool";
diff --git a/src/routes/(app)/[username]/(profile)/+layout.server.ts b/src/routes/(app)/[username]/(profile)/+layout.server.ts
index 9fd42861..7accc930 100644
--- a/src/routes/(app)/[username]/(profile)/+layout.server.ts
+++ b/src/routes/(app)/[username]/(profile)/+layout.server.ts
@@ -1,10 +1,9 @@
 import getRates from "$lib/rates";
 
-export async function load({ depends, parent }) {
+export async function load({ depends }) {
   depends("app:user");
 
   const rates = await getRates();
-  const { subject } = await parent();
 
   return { rates };
 }
diff --git a/src/routes/(app)/[username]/(profile)/+page.server.ts b/src/routes/(app)/[username]/(profile)/+page.server.ts
index f5be6aae..ee3c8ba3 100644
--- a/src/routes/(app)/[username]/(profile)/+page.server.ts
+++ b/src/routes/(app)/[username]/(profile)/+page.server.ts
@@ -1,12 +1,10 @@
 import getRates from "$lib/rates";
 import { auth, get } from "$lib/utils";
 
-export async function load({ cookies, depends, parent }) {
+export async function load({ cookies, depends }) {
   depends("app:payments");
   depends("app:items");
 
-  const { subject } = await parent();
-
   let accounts = [];
   if (cookies.get("token")) accounts = await get("/accounts", auth(cookies));
 
diff --git a/src/routes/(app)/send/bitcoin/[address]/+layout.server.ts b/src/routes/(app)/send/bitcoin/[address]/+layout.server.ts
index acf6a370..e69956dc 100644
--- a/src/routes/(app)/send/bitcoin/[address]/+layout.server.ts
+++ b/src/routes/(app)/send/bitcoin/[address]/+layout.server.ts
@@ -4,7 +4,7 @@ import { redirect } from "@sveltejs/kit";
 export async function load({ cookies, params, parent }) {
   const { user } = await parent();
   const aid = cookies.get("aid") || user.id;
-  const { address, amount } = params;
+  const { address } = params;
   const account = await get(`/account/${aid}`, auth(cookies));
   const senderIsVault = account.pubkey || account.seed;
 
diff --git a/src/routes/(app)/settings/+layout.server.ts b/src/routes/(app)/settings/+layout.server.ts
index 9a1b38ee..746d2abd 100644
--- a/src/routes/(app)/settings/+layout.server.ts
+++ b/src/routes/(app)/settings/+layout.server.ts
@@ -1,7 +1,7 @@
 import { auth, get } from "$lib/utils";
 import { redirect } from "@sveltejs/kit";
 
-export async function load({ cookies, params, parent, url }) {
+export async function load({ cookies, parent, url }) {
   const { user } = await parent();
   if (!user) redirect(307, `/register?redirect=${url.pathname}`);
   const tab = url.pathname.split("/").filter(Boolean).pop();
diff --git a/src/routes/(app)/settings/+layout.svelte b/src/routes/(app)/settings/+layout.svelte
index d447f9e3..99471c8b 100644
--- a/src/routes/(app)/settings/+layout.svelte
+++ b/src/routes/(app)/settings/+layout.svelte
@@ -217,7 +217,7 @@
           const canonicalKey = getCachedPrfKey();
           if (canonicalKey) {
             const wrapped = await wrapCanonicalKey(sk.buffer as ArrayBuffer, canonicalKey);
-            pendingEncryptedKeys = { ...(user.encryptedKeys || {}), [passwordMethodId()]: wrapped };
+            pendingEncryptedKeys = { ...user.encryptedKeys, [passwordMethodId()]: wrapped };
           }
         } catch (e) {
           console.log("Failed to derive authPubkey for password change", e);
diff --git a/src/routes/(app)/settings/security/+page.svelte b/src/routes/(app)/settings/security/+page.svelte
index 6e779eb8..80d09ace 100644
--- a/src/routes/(app)/settings/security/+page.svelte
+++ b/src/routes/(app)/settings/security/+page.svelte
@@ -169,7 +169,7 @@
       const canonicalKey = getCachedPrfKey();
       if (canonicalKey) {
         const wrapped = await wrapCanonicalKey(prfKey, canonicalKey);
-        const updated = { ...(user.encryptedKeys || {}), [passkeyMethodId(credentialId)]: wrapped };
+        const updated = { ...user.encryptedKeys, [passkeyMethodId(credentialId)]: wrapped };
         await saveEncryptedKeys(updated);
         user.encryptedKeys = updated;
       } else {
diff --git a/src/routes/(static)/register/auth/+page.server.ts b/src/routes/(static)/register/auth/+page.server.ts
index 282081f9..25de32ae 100644
--- a/src/routes/(static)/register/auth/+page.server.ts
+++ b/src/routes/(static)/register/auth/+page.server.ts
@@ -36,7 +36,7 @@ export const actions = {
     if (ip) headers["cf-connecting-ip"] = ip;
 
     try {
-      const { sk, token } = await post("/register", { user }, headers);
+      const { sk } = await post("/register", { user }, headers);
 
       // Log the user in and set cookies
       await login(user, cookies, ip, host);
diff --git a/test/e2e/custodial-receive-bitcoin.spec.ts b/test/e2e/custodial-receive-bitcoin.spec.ts
index 508a440e..c12e99ef 100644
--- a/test/e2e/custodial-receive-bitcoin.spec.ts
+++ b/test/e2e/custodial-receive-bitcoin.spec.ts
@@ -7,7 +7,6 @@ import {
   bitcoinSend,
   mineBlocks,
   waitForInvoicePaid,
-  waitForPaidRedirect,
 } from "./helpers";
 
 test("custodial receives external bitcoin payment from bitcoind", async ({ page }) => {
diff --git a/test/e2e/custodial-receive-lightning.spec.ts b/test/e2e/custodial-receive-lightning.spec.ts
index 5c35b557..5c1bfdc5 100644
--- a/test/e2e/custodial-receive-lightning.spec.ts
+++ b/test/e2e/custodial-receive-lightning.spec.ts
@@ -6,7 +6,6 @@ import {
   login,
   lightningPay,
   waitForInvoicePaid,
-  waitForPaidRedirect,
 } from "./helpers";
 
 test("custodial receives external lightning payment from clb", async ({ page }) => {
diff --git a/test/e2e/custodial-send-external-ln.spec.ts b/test/e2e/custodial-send-external-ln.spec.ts
index 6142d9c8..baaa4c1b 100644
--- a/test/e2e/custodial-send-external-ln.spec.ts
+++ b/test/e2e/custodial-send-external-ln.spec.ts
@@ -5,7 +5,6 @@ import {
   loginNewContext,
   lightningInvoice,
   pasteAndSend,
-  clickSendButton,
   waitForSentRedirect,
 } from "./helpers";
 
diff --git a/test/e2e/custodial-send-lightning.spec.ts b/test/e2e/custodial-send-lightning.spec.ts
index 62bf9415..88f87f40 100644
--- a/test/e2e/custodial-send-lightning.spec.ts
+++ b/test/e2e/custodial-send-lightning.spec.ts
@@ -7,7 +7,6 @@ import {
   apiBaseUrl,
   loginNewContext,
   pasteAndSend,
-  clickSendButton,
   waitForSentRedirect,
   waitForPaidRedirect,
 } from "./helpers";
diff --git a/test/e2e/helpers.ts b/test/e2e/helpers.ts
index 28b2d4c4..e8d4d6f6 100644
--- a/test/e2e/helpers.ts
+++ b/test/e2e/helpers.ts
@@ -84,7 +84,7 @@ export async function apiGetInvoice(page: Page, invoiceId: string) {
 
 // --- Invoice creation via UI ---
 
-export async function createBitcoinInvoiceViaUI(page: Page, username: string) {
+export async function createBitcoinInvoiceViaUI(page: Page, _username: string) {
   await page.goto(`/invoice?type=bitcoin&address_type=bech32`);
   await page.waitForURL(/\/invoice\/[^/?#]+/, { timeout: 15_000 });
 
@@ -101,7 +101,7 @@ export async function createBitcoinInvoiceViaUI(page: Page, username: string) {
   return { invoiceId: invoiceId!, address };
 }
 
-export async function createLightningInvoiceViaUI(page: Page, username: string) {
+export async function createLightningInvoiceViaUI(page: Page, _username: string) {
   await page.goto(`/invoice`);
   await page.waitForURL(/\/invoice\/[^/?#]+/, { timeout: 15_000 });
 
diff --git a/test/e2e/mls-messaging.spec.ts b/test/e2e/mls-messaging.spec.ts
index 94955950..b73b90aa 100644
--- a/test/e2e/mls-messaging.spec.ts
+++ b/test/e2e/mls-messaging.spec.ts
@@ -99,7 +99,7 @@ test.describe("MLS messaging", () => {
   });
 
   test("Messages appear in the chat list on /messages", async ({ browser }) => {
-    const { context: aliceCtx, page: alicePage, pubkey: alicePubkey } = await loginWithNsec(browser, aliceUsername, alicePassword);
+    const { context: aliceCtx, page: alicePage } = await loginWithNsec(browser, aliceUsername, alicePassword);
 
     const bobRes = await alicePage.request.get(`${apiBaseUrl}/users/${bobUsername}`);
     const bobPubkey = (await bobRes.json()).pubkey;
diff --git a/test/e2e/vault-receive-bitcoin.spec.ts b/test/e2e/vault-receive-bitcoin.spec.ts
index 0759d4c0..32fc9be4 100644
--- a/test/e2e/vault-receive-bitcoin.spec.ts
+++ b/test/e2e/vault-receive-bitcoin.spec.ts
@@ -10,7 +10,6 @@ import {
   bitcoinSend,
   mineBlocks,
   waitForInvoicePaid,
-  waitForPaidRedirect,
 } from "./helpers";
 
 test("bitcoin vault receives external bitcoin payment from bitcoind", async ({ page }) => {
diff --git a/test/e2e/vault-send-bob-btc.spec.ts b/test/e2e/vault-send-bob-btc.spec.ts
index 3d375b7b..f8daa0fb 100644
--- a/test/e2e/vault-send-bob-btc.spec.ts
+++ b/test/e2e/vault-send-bob-btc.spec.ts
@@ -7,7 +7,6 @@ import {
   fillNumpadAmount,
   waitForSendComplete,
   setActiveAccount,
-  apiBaseUrl,
   apiLogin,
   ensureVaultAccount,
   fundVaultAccount,
diff --git a/test/e2e/vault-send-to-custodial-btc.spec.ts b/test/e2e/vault-send-to-custodial-btc.spec.ts
index aa52213c..c963b786 100644
--- a/test/e2e/vault-send-to-custodial-btc.spec.ts
+++ b/test/e2e/vault-send-to-custodial-btc.spec.ts
@@ -5,10 +5,8 @@ import {
   bobUsername,
   bobPassword,
   apiBaseUrl,
-  login,
   loginNewContext,
   setActiveAccount,
-  createBitcoinInvoiceViaUI,
   pasteAndSend,
 } from "./helpers";
 
-- 
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