diff --git a/public/assets/components/breadcrumb.js b/public/assets/components/breadcrumb.js
index dc8a5f69..f93a03ae 100644
--- a/public/assets/components/breadcrumb.js
+++ b/public/assets/components/breadcrumb.js
@@ -1,7 +1,7 @@
 import { toHref } from "../lib/skeleton/router.js";
 import { animate, slideYOut, slideYIn, opacityOut } from "../lib/animate.js";
 import { forwardURLParams } from "../lib/path.js";
-import { safe } from "../../lib/dom.js";
+import { safe } from "../lib/dom.js";
 import assert from "../lib/assert.js";
 import { settingsSave } from "../lib/store.js";
 import { get as getConfig } from "../model/config.js";
diff --git a/public/assets/components/sidebar.js b/public/assets/components/sidebar.js
index 9fb9978c..52d3994a 100644
--- a/public/assets/components/sidebar.js
+++ b/public/assets/components/sidebar.js
@@ -79,13 +79,13 @@ export default async function ctrlSidebar(render, nRestart = 0) {
     ctrlTagPane(createRender(qs($sidebar, `[data-bind="your-tags"]`)));
 }
 
-const withResize = (function () {
+const withResize = (function() {
     let memory = null;
     return ($sidebar) => {
         const $resize = createElement(`<div class="resizer"></div>`);
         effect(rxjs.fromEvent($resize, "mousedown").pipe(
             rxjs.mergeMap((e0) => rxjs.fromEvent(document, "mousemove").pipe(
-                rxjs.takeUntil(rxjs.fromEvent(document,  "mouseup")),
+                rxjs.takeUntil(rxjs.fromEvent(document, "mouseup")),
                 rxjs.startWith(e0),
                 rxjs.pairwise(),
                 rxjs.map(([prevX, currX]) => currX.clientX - prevX.clientX),
@@ -100,7 +100,7 @@ const withResize = (function () {
             }),
         ));
         $sidebar.appendChild($resize);
-    }
+    };
 }());
 
 async function ctrlNavigationPane(render, { $sidebar, nRestart }) {
diff --git a/public/assets/helpers/loader_wasm.js b/public/assets/helpers/loader_wasm.js
index 07af6fac..24607c82 100644
--- a/public/assets/helpers/loader_wasm.js
+++ b/public/assets/helpers/loader_wasm.js
@@ -242,10 +242,8 @@ export class Wasi {
             true,
         );
         if (fd === 1 || fd === 2) {
-            let msg = fd === 1? "stdout: " : "stderr: ";
-            msg += new TextDecoder().decode(readFS(fd));
             FS[fd] = {
-                buffer: new Uint8Array(0),
+                buffer: new Uint8Array(readFS(fd)),
                 position: 0,
                 path: FS[fd].path || "",
             };
@@ -300,7 +298,7 @@ export class Wasi {
 
         const start = (offset_hi >>> 0) * 0x100000000 + (offset_lo >>> 0);
         const ioVec = new Uint32Array(this.#instance.exports.memory.buffer, iovs, iovs_len * 2);
-        const mem   = new Uint8Array(this.#instance.exports.memory.buffer);
+        const mem = new Uint8Array(this.#instance.exports.memory.buffer);
 
         let total = 0;
         for (let i = 0; i < iovs_len * 2; i += 2) {
@@ -311,7 +309,7 @@ export class Wasi {
                 Math.min(len, file.buffer.length - (start + total)),
             );
             if (avail === 0) {
-                console.log(`len=[${len}] buffLength=[${file.buffer.length}] start=[${start}] total=[${total}]`)
+                console.log(`len=[${len}] buffLength=[${file.buffer.length}] start=[${start}] total=[${total}]`);
                 break;
             }
             mem.set(
@@ -469,19 +467,19 @@ export class Wasi {
     __syscall_fstat64(fd, buf) {
         log(`  syscall::fstat64 fd=${fd}, buf=${buf}`);
         const file = FS[fd];
-        if (!file) return -1;                         // EBADF
+        if (!file) return -1; // EBADF
 
-        const size   = file.buffer.byteLength >>> 0;  // ≤ 4 GB
+        const size = file.buffer.byteLength >>> 0; // ≤ 4 GB
         const nowSec = (Date.now() / 1000) | 0;
-        const H32    = new Int32Array(this.#instance.exports.memory.buffer);
+        const H32 = new Int32Array(this.#instance.exports.memory.buffer);
 
         /* basic fields */
-        H32[ buf       >> 2] = 1;        /* st_dev   */
-        H32[(buf+4)  >> 2] = 0o100644;   /* st_mode  */
-        H32[(buf+8)  >> 2] = 1;          /* st_nlink */
-        H32[(buf+12) >> 2] = 1000;       /* st_uid   */
-        H32[(buf+16) >> 2] = 1000;       /* st_gid   */
-        H32[(buf+20) >> 2] = 0;          /* st_rdev  */
+        H32[buf >> 2] = 1; /* st_dev   */
+        H32[(buf+4) >> 2] = 0o100644; /* st_mode  */
+        H32[(buf+8) >> 2] = 1; /* st_nlink */
+        H32[(buf+12) >> 2] = 1000; /* st_uid   */
+        H32[(buf+16) >> 2] = 1000; /* st_gid   */
+        H32[(buf+20) >> 2] = 0; /* st_rdev  */
 
         H32[((buf + 24) >> 2)] = size & 0xFFFFFFFF;
         H32[((buf + 28) >> 2)] = Math.floor(size / 4294967296);
@@ -490,22 +488,21 @@ export class Wasi {
         H32[(buf+36) >> 2] = (size + 511) >> 9;
 
         /* st_size lives at byte 40 in Emscripten’s 32-bit stat64 */
-        H32[(buf+40) >> 2] = size;       /* low 32 bits (high word = 0) */
+        H32[(buf+40) >> 2] = size; /* low 32 bits (high word = 0) */
         H32[(buf+44) >> 2] = 0;
 
-        H32[(buf+32) >> 2] = 4096;       /* st_blksize */
+        H32[(buf+32) >> 2] = 4096; /* st_blksize */
         H32[(buf+36) >> 2] = (size + 511) >> 9; /* st_blocks */
 
         /* atime / mtime / ctime: seconds, nsec = 0 */
-        for (let off of [48, 56, 64]) {
-            H32[((buf+off)   >> 2)] = nowSec;
+        for (const off of [48, 56, 64]) {
+            H32[((buf+off) >> 2)] = nowSec;
             H32[((buf+off+4) >> 2)] = 0;
         }
 
-        H32[(buf+72) >> 2] = fd;         /* st_ino (low) */
-        H32[(buf+76) >> 2] = 0;          /* st_ino (high) */
+        H32[(buf+72) >> 2] = fd; /* st_ino (low) */
+        H32[(buf+76) >> 2] = 0; /* st_ino (high) */
 
         return 0;
     }
-
 }
diff --git a/public/assets/lib/dom.d.ts b/public/assets/lib/dom.d.ts
index c0845b11..69e53a32 100644
--- a/public/assets/lib/dom.d.ts
+++ b/public/assets/lib/dom.d.ts
@@ -2,4 +2,4 @@ export function qs($node: HTMLElement | DocumentFragment, selector: string);
 
 export function qsa($node: HTMLElement | DocumentFragment, selector: string);
 
-export function safe(str: string): string;
+export function safe(str: string | null): string;
diff --git a/public/assets/pages/filespage/thing.js b/public/assets/pages/filespage/thing.js
index 140d6271..eeeafebf 100644
--- a/public/assets/pages/filespage/thing.js
+++ b/public/assets/pages/filespage/thing.js
@@ -1,7 +1,6 @@
 import { createElement } from "../../lib/skeleton/index.js";
 import { animate, opacityOut, opacityIn } from "../../lib/animate.js";
 import assert from "../../lib/assert.js";
-import { safe } from "../../lib/dom.js";
 import { forwardURLParams } from "../../lib/path.js";
 import { get as getConfig } from "../../model/config.js";
 
diff --git a/public/assets/pages/viewerpage/application_editor.js b/public/assets/pages/viewerpage/application_editor.js
index a45801a8..f9fda1e0 100644
--- a/public/assets/pages/viewerpage/application_editor.js
+++ b/public/assets/pages/viewerpage/application_editor.js
@@ -110,7 +110,7 @@ export default async function(render, { acl$, getFilename, getDownloadUrl, mime
                 rxjs.tap((editor) => requestAnimationFrame(() => editor.refresh())),
             );
         }),
-        rxjs.mergeMap(async (editor) => {
+        rxjs.mergeMap(async(editor) => {
             const loader = await loadPlugin(mime);
             if (loader) new (await loader(IEditor, { mime, $menubar: $dom.menubar(), getFilename, getDownloadUrl }))(editor);
             return editor;
diff --git a/public/assets/pages/viewerpage/application_image.js b/public/assets/pages/viewerpage/application_image.js
index 4701c96c..91a9b665 100644
--- a/public/assets/pages/viewerpage/application_image.js
+++ b/public/assets/pages/viewerpage/application_image.js
@@ -76,7 +76,7 @@ export default function(render, { getFilename, getDownloadUrl, mime, hasMenubar
         rxjs.tap(() => {
             const cancel = animate($photo, {
                 onEnter: () => $photo.classList.remove("hidden"),
-                onExit: async () => (await cancel)(),
+                onExit: async() => (await cancel)(),
                 time: 300,
                 easing: "cubic-bezier(.51,.92,.24,1.15)",
                 keyframes: [
@@ -84,7 +84,7 @@ export default function(render, { getFilename, getDownloadUrl, mime, hasMenubar
                     { opacity: 1 },
                     { opacity: 1, transform: "scale(1)" },
                 ],
-            })
+            });
         }),
         rxjs.catchError((err) => {
             if (err.target instanceof HTMLElement && err.type === "error") {
diff --git a/public/assets/pages/viewerpage/application_image/pagination.js b/public/assets/pages/viewerpage/application_image/pagination.js
index 6b57598f..fd6c19bd 100644
--- a/public/assets/pages/viewerpage/application_image/pagination.js
+++ b/public/assets/pages/viewerpage/application_image/pagination.js
@@ -105,7 +105,7 @@ function initMobileNavigation({ $img, $navigation }) {
         active: false,
         originX: null,
         originT: null,
-        dist:   null,
+        dist: null,
     };
 
     effect(rxjs.fromEvent($img, "touchstart", { passive: true }).pipe(rxjs.debounceTime(10), rxjs.tap((event) => {
@@ -122,7 +122,7 @@ function initMobileNavigation({ $img, $navigation }) {
         $img.style.transform = `translateX(${state.dist}px)`;
     })));
 
-    effect(rxjs.fromEvent($img, "touchend").pipe(rxjs.tap(async (event) => {
+    effect(rxjs.fromEvent($img, "touchend").pipe(rxjs.tap(async(event) => {
         if (state.active === false) return;
         state.active = false;
 
@@ -148,10 +148,13 @@ function initMobileNavigation({ $img, $navigation }) {
         }
 
         $navlink.click();
-        await animate($img, { time: 200, keyframes: [
-            { transform: `translateX(${state.dist}px)`, opacity: 1 },
-            { transform: `translateX(${$img.clientWidth*Math.sign(state.dist)}px)`, opacity: 0 },
-        ]});
+        await animate($img, {
+            time: 200,
+            keyframes: [
+                { transform: `translateX(${state.dist}px)`, opacity: 1 },
+                { transform: `translateX(${$img.clientWidth*Math.sign(state.dist)}px)`, opacity: 0 },
+            ]
+        });
         $img.classList.add("hidden");
     })));
 }
diff --git a/public/assets/pages/viewerpage/application_image/zoom.js b/public/assets/pages/viewerpage/application_image/zoom.js
index b2aa78c5..769b6813 100644
--- a/public/assets/pages/viewerpage/application_image/zoom.js
+++ b/public/assets/pages/viewerpage/application_image/zoom.js
@@ -1,7 +1,7 @@
 import rxjs, { effect } from "../../../lib/rx.js";
 import { qs } from "../../../lib/dom.js";
 
-export default function ({ $img, $page }) {
+export default function({ $img, $page }) {
     const $navigation = qs($page, `[data-bind="component_navigation"]`);
 
     effect(rxjs.merge(...builder({ $img })).pipe(
@@ -12,8 +12,8 @@ export default function ({ $img, $page }) {
             const next = Math.min(20, Math.max(1, state.scale * (scale ?? 1)));
             if (next > 1) {
                 const rect = $img.getBoundingClientRect();
-                const ox = (clientX ?? rect.left + rect.width  / 2) - rect.left;
-                const oy = (clientY ?? rect.top  + rect.height / 2) - rect.top;
+                const ox = (clientX ?? rect.left + rect.width / 2) - rect.left;
+                const oy = (clientY ?? rect.top + rect.height / 2) - rect.top;
                 const f = next / state.scale;
                 state.x += (1 - f) * ox;
                 state.y += (1 - f) * oy;
@@ -27,7 +27,7 @@ export default function ({ $img, $page }) {
         }, { scale: 1, x: 0, y: 0, duration: 0 }),
         rxjs.tap(({ scale, x, y, duration }) => {
             $img.style.transition = `transform ${duration}ms ease`;
-            $img.style.transform  = `translate(${x}px,${y}px) scale(${scale})`;
+            $img.style.transform = `translate(${x}px,${y}px) scale(${scale})`;
             if (scale === 1) $navigation.classList.remove("hidden");
         }),
     ));
@@ -47,11 +47,11 @@ function builder({ $img }) {
         rxjs.fromEvent($img.parentElement, "wheel").pipe(
             rxjs.tap((e) => e.preventDefault()),
             rxjs.bufferTime(100),
-            rxjs.filter(events => events.length > 0),
+            rxjs.filter((events) => events.length > 0),
             rxjs.map((events) => {
                 let out = null;
                 for (let i=0; i<events.length; i++) {
-                    const scale = Math.min(Math.exp(-events[i].deltaY / 300), 2)
+                    const scale = Math.min(Math.exp(-events[i].deltaY / 300), 2);
                     if (out === null) out = ({ scale, clientX: events[i].clientX, clientY: events[i].clientY });
                     else if (Math.abs(scale) > Math.abs(out.scale)) out = ({ scale, clientX: events[i].clientX, clientY: events[i].clientY });
                 }
@@ -99,12 +99,12 @@ function builder({ $img }) {
         ),
         // grab and drag
         rxjs.fromEvent($img.parentElement, "mousedown").pipe(
-            rxjs.filter(e => e.target === $img && e.button === 0),
+            rxjs.filter((e) => e.target === $img && e.button === 0),
             rxjs.switchMap((down) => {
                 let prev = { x: down.clientX, y: down.clientY, t: down.timeStamp };
                 const move$ = rxjs.fromEvent(window, "mousemove").pipe(
                     rxjs.takeUntil(rxjs.fromEvent(window, "mouseup")),
-                    rxjs.map(m => {
+                    rxjs.map((m) => {
                         const dx = m.clientX - prev.x;
                         const dy = m.clientY - prev.y;
                         const dt = m.timeStamp - prev.t || 1;
@@ -138,5 +138,5 @@ function builder({ $img }) {
                 return rxjs.merge(move$, $inertia);
             }),
         ),
-    ]
+    ];
 }
diff --git a/public/assets/pages/viewerpage/application_table.js b/public/assets/pages/viewerpage/application_table.js
index 74c72946..37f50959 100644
--- a/public/assets/pages/viewerpage/application_table.js
+++ b/public/assets/pages/viewerpage/application_table.js
@@ -1,4 +1,4 @@
-import { createElement, nop } from "../../lib/skeleton/index.js";
+import { createElement } from "../../lib/skeleton/index.js";
 import rxjs, { effect } from "../../lib/rx.js";
 import { qs, qsa, safe } from "../../lib/dom.js";
 import ajax from "../../lib/ajax.js";
@@ -19,7 +19,7 @@ class ITable {
     getBody() { throw new Error("NOT_IMPLEMENTED"); }
 }
 
-export default async function(render, { mime, getDownloadUrl = nop, getFilename = nop, hasMenubar = true, acl$ = rxjs.EMPTY }) {
+export default async function(render, { mime, getDownloadUrl, getFilename, hasMenubar = true, acl$ = rxjs.EMPTY }) {
     const $page = createElement(`
         <div class="component_tableviewer">
             <component-menubar filename="${safe(getFilename())}" class="${!hasMenubar && "hidden"}"></component-menubar>
diff --git a/public/assets/sw.js b/public/assets/sw.js
index 3fff4e81..c9af9a93 100644
--- a/public/assets/sw.js
+++ b/public/assets/sw.js
@@ -37,7 +37,7 @@ self.addEventListener("activate", (event) => {
     })());
 });
 
-self.addEventListener("fetch", async (event) => {
+self.addEventListener("fetch", async(event) => {
     if (!event.request.url.startsWith(location.origin + "/assets/")) return;
 
     event.respondWith((async() => {
@@ -78,7 +78,7 @@ async function preload({ urls, cache, cleanup }) {
     cleanup.push(() => evtsrc.close());
 
     let i = 0;
-    const messageHandler = async (resolve, event, decoder) => {
+    const messageHandler = async(resolve, event, decoder) => {
         const url = event.lastEventId;
         let mime = "application/octet-stream";
         if (url.endsWith(".css")) mime = "text/css";
diff --git a/public/package.json b/public/package.json
index 9056bb4e..258fa171 100644
--- a/public/package.json
+++ b/public/package.json
@@ -133,6 +133,9 @@
       ],
       "accessor-pairs": [
         "off"
+      ],
+      "no-new": [
+        "off"
       ]
     }
   },