fix(gui): Strictly enforce UI types with Typescript (#678)

* fix(gui): we were not checking for null everywhere

* add more null checks, enable tsconfig strict

* remove dead code

* more nullish checks

* remove unused JSONViewTree.tsx

* fix a bunch of small typescript lints

* add explanations as to why LabeledMoneroAddress.address is non-nullish but we pass in null due to typeshare limitation

* remove @mui/lab from yarn.lock

* re-add SortableQuoteWithAddress

* add guard function for ExportBitcoinWalletResponseExt ("wallet_descriptor")

* fix remaining linter errors

* remove duplicate XMR

* fix hasUnusualAmountOfTimePassed in SwapStatusAlert.tsx

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+- GUI: Fix an issue where an error in the UI runtime would cause a white screen to be displayed and nothing would be rendered.
+
 ## [3.2.8] - 2025-11-02
 
 - ASB + CONTROLLER: Add a `registration-status` command to the controller shell. You can use it to get the registration status of the ASB at the configured rendezvous points.

src-gui/package.json

@@ -20,7 +20,6 @@
     "@emotion/styled": "^11.14.0",
     "@fontsource/roboto": "^5.1.0",
     "@mui/icons-material": "^7.1.1",
-    "@mui/lab": "^7.0.0-beta.13",
     "@mui/material": "^7.1.1",
     "@mui/x-date-pickers": "^8.8.0",
     "@reduxjs/toolkit": "^2.3.0",

src-gui/src/models/tauriModelExt.ts

@@ -8,6 +8,8 @@ import {
   TauriSwapProgressEvent,
   SendMoneroDetails,
   ContextStatus,
+  QuoteWithAddress,
+  ExportBitcoinWalletResponse,
 } from "./tauriModel";
 import {
   ContextStatusType,
@@ -17,6 +19,16 @@ import {
 
 export type TauriSwapProgressEventType = TauriSwapProgressEvent["type"];
 
+// Wrapper for QuoteWithAddress with an optional approval request
+// Approving that request will result in a swap being initiated with that maker
+export type SortableQuoteWithAddress = {
+  quote_with_address: QuoteWithAddress;
+  approval: {
+    request_id: string;
+    expiration_ts: number;
+  } | null;
+};
+
 export type TauriSwapProgressEventContent<
   T extends TauriSwapProgressEventType,
 > = Extract<TauriSwapProgressEvent, { type: T }>["content"];
@@ -354,9 +366,9 @@ export function isPendingPasswordApprovalEvent(
  * @returns True if funds have been locked, false otherwise
  */
 export function haveFundsBeenLocked(
-  event: TauriSwapProgressEvent | null,
+  event: TauriSwapProgressEvent | null | undefined,
 ): boolean {
-  if (event === null) {
+  if (event === null || event === undefined) {
     return false;
   }
 
@@ -372,7 +384,7 @@ export function haveFundsBeenLocked(
 }
 
 export function isContextFullyInitialized(
-  status: ResultContextStatus,
+  status: ResultContextStatus | null,
 ): boolean {
   if (status == null || status.type === ContextStatusType.Error) {
     return false;
@@ -396,3 +408,20 @@ export function isContextWithMoneroWallet(
 ): boolean {
   return status?.monero_wallet_available ?? false;
 }
+
+export type ExportBitcoinWalletResponseExt = ExportBitcoinWalletResponse & {
+  wallet_descriptor: {
+    descriptor: string;
+  };
+};
+
+export function hasDescriptorProperty(
+  response: ExportBitcoinWalletResponse,
+): response is ExportBitcoinWalletResponseExt {
+  return (
+    typeof response.wallet_descriptor === "object" &&
+    response.wallet_descriptor !== null &&
+    "descriptor" in response.wallet_descriptor &&
+    typeof (response.wallet_descriptor as { descriptor?: unknown }).descriptor === "string"
+  );
+}

src-gui/src/renderer/components/App.tsx

@@ -26,6 +26,7 @@ import { LocalizationProvider } from "@mui/x-date-pickers/LocalizationProvider";
 import { AdapterDayjs } from "@mui/x-date-pickers/AdapterDayjs";
 import PasswordEntryDialog from "./modal/password-entry/PasswordEntryDialog";
 import ContextErrorDialog from "./modal/context-error/ContextErrorDialog";
+import ErrorBoundary from "./other/ErrorBoundary";
 
 declare module "@mui/material/styles" {
   interface Theme {
@@ -47,24 +48,26 @@ export default function App() {
   console.log("Current theme:", { theme, currentTheme });
 
   return (
-    <StyledEngineProvider injectFirst>
+    <ErrorBoundary>
-      <ThemeProvider theme={currentTheme}>
+      <StyledEngineProvider injectFirst>
-        <LocalizationProvider dateAdapter={AdapterDayjs}>
+        <ThemeProvider theme={currentTheme}>
-          <CssBaseline />
+          <LocalizationProvider dateAdapter={AdapterDayjs}>
-          <GlobalSnackbarProvider>
+            <CssBaseline />
-            <IntroductionModal />
+            <GlobalSnackbarProvider>
-            <SeedSelectionDialog />
+              <IntroductionModal />
-            <PasswordEntryDialog />
+              <SeedSelectionDialog />
-            <ContextErrorDialog />
+              <PasswordEntryDialog />
-            <Router>
+              <ContextErrorDialog />
-              <Navigation />
+              <Router>
-              <InnerContent />
+                <Navigation />
-              <UpdaterDialog />
+                <InnerContent />
-            </Router>
+                <UpdaterDialog />
-          </GlobalSnackbarProvider>
+              </Router>
-        </LocalizationProvider>
+            </GlobalSnackbarProvider>
-      </ThemeProvider>
+          </LocalizationProvider>
-    </StyledEngineProvider>
+        </ThemeProvider>
+      </StyledEngineProvider>
+    </ErrorBoundary>
   );
 }
 
@@ -79,13 +82,13 @@ function InnerContent() {
       }}
     >
       <Routes>
-        <Route path="/" element={<MoneroWalletPage />} />
+        <Route path="/" element={<ErrorBoundary><MoneroWalletPage /></ErrorBoundary>} />
-        <Route path="/monero-wallet" element={<MoneroWalletPage />} />
+        <Route path="/monero-wallet" element={<ErrorBoundary><MoneroWalletPage /></ErrorBoundary>} />
-        <Route path="/swap" element={<SwapPage />} />
+        <Route path="/swap" element={<ErrorBoundary><SwapPage /></ErrorBoundary>} />
-        <Route path="/history" element={<HistoryPage />} />
+        <Route path="/history" element={<ErrorBoundary><HistoryPage /></ErrorBoundary>} />
-        <Route path="/bitcoin-wallet" element={<WalletPage />} />
+        <Route path="/bitcoin-wallet" element={<ErrorBoundary><WalletPage /></ErrorBoundary>} />
-        <Route path="/settings" element={<SettingsPage />} />
+        <Route path="/settings" element={<ErrorBoundary><SettingsPage /></ErrorBoundary>} />
-        <Route path="/feedback" element={<FeedbackPage />} />
+        <Route path="/feedback" element={<ErrorBoundary><FeedbackPage /></ErrorBoundary>} />
       </Routes>
     </Box>
   );

src-gui/src/renderer/components/PromiseInvokeButton.tsx

@@ -34,7 +34,7 @@ interface PromiseInvokeButtonProps<T> {
 
 export default function PromiseInvokeButton<T>({
   disabled = false,
-  onSuccess = null,
+  onSuccess,
   onInvoke,
   children,
   startIcon,
@@ -44,7 +44,7 @@ export default function PromiseInvokeButton<T>({
   isIconButton = false,
   isChipButton = false,
   displayErrorSnackbar = false,
-  onPendingChange = null,
+  onPendingChange,
   contextRequirement = true,
   tooltipTitle = null,
   ...rest

src-gui/src/renderer/components/alert/SwapStatusAlert/SwapStatusAlert.tsx

@@ -69,11 +69,7 @@ function BitcoinRedeemedStateAlert({ swap }: { swap: GetSwapInfoResponseExt }) {
           "If this step fails, you can manually redeem your funds",
         ]}
       />
-      <SwapMoneroRecoveryButton
+      <SwapMoneroRecoveryButton swap={swap} size="small" variant="contained" />
-        swap={swap}
-        size="small"
-        variant="contained"
-      />
     </Box>
   );
 }
@@ -208,10 +204,7 @@ export function StateAlert({
             );
           case "Cancel":
             return (
-              <BitcoinPossiblyCancelledAlert
+              <BitcoinPossiblyCancelledAlert timelock={timelock} swap={swap} />
-                timelock={timelock}
-                swap={swap}
-              />
             );
           case "Punish":
             return <PunishTimelockExpiredAlert />;
@@ -235,6 +228,7 @@ export function StateAlert({
 // 72 is the default cancel timelock in blocks
 // 4 blocks are around 40 minutes
 // If the swap has taken longer than 40 minutes, we consider it unusual
+// See: swap-env/src/env.rs
 const UNUSUAL_AMOUNT_OF_TIME_HAS_PASSED_THRESHOLD = 72 - 4;
 
 /**
@@ -246,10 +240,16 @@ export default function SwapStatusAlert({
   swap,
   onlyShowIfUnusualAmountOfTimeHasPassed,
 }: {
-  swap: GetSwapInfoResponseExt;
+  swap: GetSwapInfoResponseExt | null;
   onlyShowIfUnusualAmountOfTimeHasPassed?: boolean;
 }) {
-  const timelock = useAppSelector(selectSwapTimelock(swap.swap_id));
+  const swapId = swap?.swap_id ?? null;
+  const timelock = useAppSelector(selectSwapTimelock(swapId));
+  const isRunning = useIsSpecificSwapRunning(swapId);
+
+  if (swap == null) {
+    return null;
+  }
 
   if (!isGetSwapInfoResponseRunningSwap(swap)) {
     return null;
@@ -263,12 +263,10 @@ export default function SwapStatusAlert({
     timelock.type === "None" &&
     timelock.content.blocks_left > UNUSUAL_AMOUNT_OF_TIME_HAS_PASSED_THRESHOLD;
 
-  if (onlyShowIfUnusualAmountOfTimeHasPassed && hasUnusualAmountOfTimePassed) {
+  if (onlyShowIfUnusualAmountOfTimeHasPassed && !hasUnusualAmountOfTimePassed) {
     return null;
   }
 
-  const isRunning = useIsSpecificSwapRunning(swap.swap_id);
-
   return (
     <Alert
       key={swap.swap_id}
@@ -290,8 +288,7 @@ export default function SwapStatusAlert({
           )
         ) : (
           <>
-            Swap <TruncatedText>{swap.swap_id}</TruncatedText> is
+            Swap <TruncatedText>{swap.swap_id}</TruncatedText> is not running
-            not running
           </>
         )}
       </AlertTitle>
@@ -303,7 +300,7 @@ export default function SwapStatusAlert({
         }}
       >
         <StateAlert swap={swap} timelock={timelock} isRunning={isRunning} />
-        <TimelockTimeline swap={swap} timelock={timelock} />
+        {timelock && <TimelockTimeline swap={swap} timelock={timelock} />}
       </Box>
     </Alert>
   );

src-gui/src/renderer/components/alert/SwapStatusAlert/TimelockTimeline.tsx

@@ -50,7 +50,7 @@ function TimelineSegment({
           opacity: isActive ? 1 : 0.3,
         }}
       >
-        {isActive && (
+        {isActive && durationOfSegment && (
           <Box
             sx={{
               position: "absolute",

src-gui/src/renderer/components/modal/provider/MakerInfo.tsx

@@ -1,115 +0,0 @@
-import { Box, Chip, Paper, Tooltip, Typography } from "@mui/material";
-import { VerifiedUser } from "@mui/icons-material";
-import { ExtendedMakerStatus } from "models/apiModel";
-import TruncatedText from "renderer/components/other/TruncatedText";
-import {
-  MoneroBitcoinExchangeRate,
-  SatsAmount,
-} from "renderer/components/other/Units";
-import { getMarkup, satsToBtc, secondsToDays } from "utils/conversionUtils";
-import { isMakerOutdated, isMakerVersionOutdated } from "utils/multiAddrUtils";
-import WarningIcon from "@mui/icons-material/Warning";
-import { useAppSelector } from "store/hooks";
-import IdentIcon from "renderer/components/icons/IdentIcon";
-
-/**
- * A chip that displays the markup of the maker's exchange rate compared to the market rate.
- */
-function MakerMarkupChip({ maker }: { maker: ExtendedMakerStatus }) {
-  const marketExchangeRate = useAppSelector((s) => s.rates?.xmrBtcRate);
-  if (marketExchangeRate == null) return null;
-
-  const makerExchangeRate = satsToBtc(maker.price);
-  /** The markup of the exchange rate compared to the market rate in percent */
-  const markup = getMarkup(makerExchangeRate, marketExchangeRate);
-
-  return (
-    <Tooltip title="The markup this maker charges compared to centralized markets. A lower markup means that you get more Monero for your Bitcoin.">
-      <Chip label={`Markup ${markup.toFixed(2)}%`} />
-    </Tooltip>
-  );
-}
-
-export default function MakerInfo({ maker }: { maker: ExtendedMakerStatus }) {
-  const isOutdated = isMakerOutdated(maker);
-
-  return (
-    <Box
-      sx={{
-        flex: 1,
-        "& *": {
-          lineBreak: "anywhere",
-        },
-        display: "flex",
-        flexDirection: "column",
-        gap: 1,
-      }}
-    >
-      <Box sx={{ display: "flex", alignItems: "center", gap: 1 }}>
-        <Tooltip
-          title={
-            "This avatar is deterministically derived from the public key of the maker"
-          }
-          arrow
-        >
-          <Box sx={{ display: "flex", alignItems: "center", gap: 1 }}>
-            <IdentIcon value={maker.peerId} size={"3rem"} />
-          </Box>
-        </Tooltip>
-        <Box>
-          <Typography variant="subtitle1">
-            <TruncatedText limit={16} truncateMiddle>
-              {maker.peerId}
-            </TruncatedText>
-          </Typography>
-          <Typography color="textSecondary" variant="body2">
-            {maker.multiAddr}
-          </Typography>
-        </Box>
-      </Box>
-      <Box sx={{ display: "flex", flexDirection: "column" }}>
-        <Typography variant="caption">
-          Exchange rate:{" "}
-          <MoneroBitcoinExchangeRate rate={satsToBtc(maker.price)} />
-        </Typography>
-        <Typography variant="caption">
-          Minimum amount: <SatsAmount amount={maker.minSwapAmount} />
-        </Typography>
-        <Typography variant="caption">
-          Maximum amount: <SatsAmount amount={maker.maxSwapAmount} />
-        </Typography>
-      </Box>
-      <Box sx={{ display: "flex", flexWrap: "wrap", gap: 0.5 }}>
-        {maker.testnet && <Chip label="Testnet" />}
-        {maker.uptime && (
-          <Tooltip title="A high uptime (>90%) indicates reliability. Makers with very low uptime may be unreliable and cause swaps to take longer to complete or fail entirely.">
-            <Chip label={`${Math.round(maker.uptime * 100)}% uptime`} />
-          </Tooltip>
-        )}
-        {maker.age && (
-          <Chip
-            label={`Went online ${Math.round(secondsToDays(maker.age))} ${
-              maker.age === 1 ? "day" : "days"
-            } ago`}
-          />
-        )}
-        {maker.recommended === true && (
-          <Tooltip title="This maker has shown to be exceptionally reliable">
-            <Chip label="Recommended" icon={<VerifiedUser />} color="primary" />
-          </Tooltip>
-        )}
-        {isOutdated && (
-          <Tooltip title="This maker is running an older version of the software. Outdated makers may be unreliable and cause swaps to take longer to complete or fail entirely.">
-            <Chip label="Outdated" icon={<WarningIcon />} color="primary" />
-          </Tooltip>
-        )}
-        {maker.version && (
-          <Tooltip title="The version of the maker's software">
-            <Chip label={`v${maker.version}`} />
-          </Tooltip>
-        )}
-        <MakerMarkupChip maker={maker} />
-      </Box>
-    </Box>
-  );
-}

src-gui/src/renderer/components/modal/provider/MakerListDialog.tsx

@@ -1,85 +0,0 @@
-import {
-  Avatar,
-  Button,
-  Dialog,
-  DialogActions,
-  DialogContent,
-  DialogTitle,
-  List,
-  ListItemAvatar,
-  ListItemText,
-} from "@mui/material";
-import AddIcon from "@mui/icons-material/Add";
-import SearchIcon from "@mui/icons-material/Search";
-import { ExtendedMakerStatus } from "models/apiModel";
-import { useState } from "react";
-import { setSelectedMaker } from "store/features/makersSlice";
-import { useAllMakers, useAppDispatch } from "store/hooks";
-import MakerInfo from "./MakerInfo";
-import MakerSubmitDialog from "./MakerSubmitDialog";
-
-import ListItemButton from "@mui/material/ListItemButton";
-
-type MakerSelectDialogProps = {
-  open: boolean;
-  onClose: () => void;
-};
-
-export function MakerSubmitDialogOpenButton() {
-  const [open, setOpen] = useState(false);
-
-  return (
-    <ListItemButton
-      autoFocus
-      onClick={() => {
-        // Prevents background from being clicked and reopening dialog
-        if (!open) {
-          setOpen(true);
-        }
-      }}
-    >
-      <MakerSubmitDialog open={open} onClose={() => setOpen(false)} />
-      <ListItemAvatar>
-        <Avatar>
-          <AddIcon />
-        </Avatar>
-      </ListItemAvatar>
-      <ListItemText primary="Add a new maker to public registry" />
-    </ListItemButton>
-  );
-}
-
-export default function MakerListDialog({
-  open,
-  onClose,
-}: MakerSelectDialogProps) {
-  const makers = useAllMakers();
-  const dispatch = useAppDispatch();
-
-  function handleMakerChange(maker: ExtendedMakerStatus) {
-    dispatch(setSelectedMaker(maker));
-    onClose();
-  }
-
-  return (
-    <Dialog onClose={onClose} open={open}>
-      <DialogTitle>Select a maker</DialogTitle>
-      <DialogContent sx={{ padding: 0 }} dividers>
-        <List>
-          {makers.map((maker) => (
-            <ListItemButton
-              onClick={() => handleMakerChange(maker)}
-              key={maker.peerId}
-            >
-              <MakerInfo maker={maker} key={maker.peerId} />
-            </ListItemButton>
-          ))}
-          <MakerSubmitDialogOpenButton />
-        </List>
-      </DialogContent>
-      <DialogActions>
-        <Button onClick={onClose}>Cancel</Button>
-      </DialogActions>
-    </Dialog>
-  );
-}

src-gui/src/renderer/components/modal/provider/MakerSelect.tsx

@@ -1,38 +0,0 @@
-import { Paper, Card, CardContent, IconButton } from "@mui/material";
-import ArrowForwardIosIcon from "@mui/icons-material/ArrowForwardIos";
-import { useState } from "react";
-import { useAppSelector } from "store/hooks";
-import MakerInfo from "./MakerInfo";
-import MakerListDialog from "./MakerListDialog";
-
-export default function MakerSelect() {
-  const [selectDialogOpen, setSelectDialogOpen] = useState(false);
-  const selectedMaker = useAppSelector((state) => state.makers.selectedMaker);
-
-  if (!selectedMaker) return <>No maker selected</>;
-
-  function handleSelectDialogClose() {
-    setSelectDialogOpen(false);
-  }
-
-  function handleSelectDialogOpen() {
-    setSelectDialogOpen(true);
-  }
-
-  return (
-    <Paper variant="outlined" elevation={4}>
-      <MakerListDialog
-        open={selectDialogOpen}
-        onClose={handleSelectDialogClose}
-      />
-      <Card sx={{ width: "100%" }}>
-        <CardContent sx={{ display: "flex", alignItems: "center" }}>
-          <MakerInfo maker={selectedMaker} />
-          <IconButton onClick={handleSelectDialogOpen} size="small">
-            <ArrowForwardIosIcon />
-          </IconButton>
-        </CardContent>
-      </Card>
-    </Paper>
-  );
-}

src-gui/src/renderer/components/modal/provider/MakerSubmitDialog.tsx

@@ -1,111 +0,0 @@
-import {
-  Button,
-  Dialog,
-  DialogActions,
-  DialogContent,
-  DialogContentText,
-  DialogTitle,
-  TextField,
-} from "@mui/material";
-import { Multiaddr } from "multiaddr";
-import { ChangeEvent, useState } from "react";
-
-type MakerSubmitDialogProps = {
-  open: boolean;
-  onClose: () => void;
-};
-
-export default function MakerSubmitDialog({
-  open,
-  onClose,
-}: MakerSubmitDialogProps) {
-  const [multiAddr, setMultiAddr] = useState("");
-  const [peerId, setPeerId] = useState("");
-
-  async function handleMakerSubmit() {
-    if (multiAddr && peerId) {
-      await fetch("https://api.unstoppableswap.net/api/submit-provider", {
-        method: "post",
-        headers: {
-          "Content-Type": "application/json",
-        },
-        body: JSON.stringify({
-          multiAddr,
-          peerId,
-        }),
-      });
-      setMultiAddr("");
-      setPeerId("");
-      onClose();
-    }
-  }
-
-  function handleMultiAddrChange(event: ChangeEvent<HTMLInputElement>) {
-    setMultiAddr(event.target.value);
-  }
-
-  function handlePeerIdChange(event: ChangeEvent<HTMLInputElement>) {
-    setPeerId(event.target.value);
-  }
-
-  function getMultiAddressError(): string | null {
-    try {
-      const multiAddress = new Multiaddr(multiAddr);
-      if (multiAddress.protoNames().includes("p2p")) {
-        return "The multi address should not contain the peer id (/p2p/)";
-      }
-      if (multiAddress.protoNames().find((name) => name.includes("onion"))) {
-        return "It is currently not possible to add a maker that is only reachable via Tor";
-      }
-      return null;
-    } catch (e) {
-      return "Not a valid multi address";
-    }
-  }
-
-  return (
-    <Dialog onClose={onClose} open={open}>
-      <DialogTitle>Submit a maker to the public registry</DialogTitle>
-      <DialogContent dividers>
-        <DialogContentText>
-          If the maker is valid and reachable, it will be displayed to all other
-          users to trade with.
-        </DialogContentText>
-        <TextField
-          autoFocus
-          margin="dense"
-          label="Multiaddress"
-          fullWidth
-          helperText={
-            getMultiAddressError() ||
-            "Tells the swap client where the maker can be reached"
-          }
-          value={multiAddr}
-          onChange={handleMultiAddrChange}
-          placeholder="/ip4/182.3.21.93/tcp/9939"
-          error={!!getMultiAddressError()}
-        />
-        <TextField
-          margin="dense"
-          label="Peer ID"
-          fullWidth
-          helperText="Identifies the maker and allows for secure communication"
-          value={peerId}
-          onChange={handlePeerIdChange}
-          placeholder="12D3KooWCdMKjesXMJz1SiZ7HgotrxuqhQJbP5sgBm2BwP1cqThi"
-        />
-      </DialogContent>
-      <DialogActions>
-        <Button onClick={onClose}>Cancel</Button>
-        <Button
-          variant="contained"
-          onClick={handleMakerSubmit}
-          disabled={!(multiAddr && peerId && !getMultiAddressError())}
-          color="primary"
-        >
-          Submit
-        </Button>
-      </DialogActions>
-    </Dialog>
-  );
-}

src-gui/src/renderer/components/modal/updater/UpdaterDialog.tsx

@@ -49,7 +49,7 @@ function LinearProgressWithLabel(
         }}
       >
         <Typography variant="body2" color="textSecondary">
-          {props.label || `${Math.round(props.value)}%`}
+          {props.label || `${Math.round(props.value ?? 0)}%`}
         </Typography>
       </Box>
     </Box>
@@ -84,6 +84,8 @@ export default function UpdaterDialog() {
   }
 
   async function handleInstall() {
+    if (!availableUpdate) return;
+
     try {
       await availableUpdate.downloadAndInstall((event: DownloadEvent) => {
         if (event.event === "Started") {
@@ -92,10 +94,13 @@ export default function UpdaterDialog() {
             downloadedBytes: 0,
           });
         } else if (event.event === "Progress") {
-          setDownloadProgress((prev) => ({
+          setDownloadProgress((prev) => {
-            ...prev,
+            if (!prev) return null;
-            downloadedBytes: prev.downloadedBytes + event.data.chunkLength,
+            return {
-          }));
+              contentLength: prev.contentLength,
+              downloadedBytes: prev.downloadedBytes + event.data.chunkLength,
+            };
+          });
         }
       });
 
@@ -110,12 +115,13 @@ export default function UpdaterDialog() {
 
   const isDownloading = downloadProgress !== null;
 
-  const progress = isDownloading
+  const progress =
-    ? Math.round(
+    isDownloading && downloadProgress.contentLength
-        (downloadProgress.downloadedBytes / downloadProgress.contentLength) *
+      ? Math.round(
-          100,
+          (downloadProgress.downloadedBytes / downloadProgress.contentLength) *
-      )
+            100,
-    : 0;
+        )
+      : 0;
 
   return (
     <Dialog

src-gui/src/renderer/components/modal/wallet/WithdrawDialog.tsx

@@ -1,7 +1,7 @@
 import { Button, Dialog, DialogActions } from "@mui/material";
 import { useState } from "react";
 import PromiseInvokeButton from "renderer/components/PromiseInvokeButton";
-import { withdrawBtc } from "renderer/rpc";
+import { sweepBtc } from "renderer/rpc";
 import DialogHeader from "../DialogHeader";
 import AddressInputPage from "./pages/AddressInputPage";
 import BtcTxInMempoolPageContent from "./pages/BitcoinWithdrawTxInMempoolPage";
@@ -59,7 +59,7 @@ export default function WithdrawDialog({
             variant="contained"
             color="primary"
             disabled={!withdrawAddressValid}
-            onInvoke={() => withdrawBtc(withdrawAddress)}
+            onInvoke={() => sweepBtc(withdrawAddress)}
             onPendingChange={setPending}
             onSuccess={setWithdrawTxId}
             contextRequirement={isContextWithBitcoinWallet}

src-gui/src/renderer/components/other/ActionableMonospaceTextBox.tsx

@@ -13,7 +13,7 @@ type ModalProps = {
 };
 
 type Props = {
-  content: string;
+  content: string | null;
   displayCopyIcon?: boolean;
   enableQrCode?: boolean;
   light?: boolean;
@@ -72,6 +72,7 @@ export default function ActionableMonospaceTextBox({
   const [isRevealed, setIsRevealed] = useState(!spoilerText);
 
   const handleCopy = async () => {
+    if (!content) return;
     await writeText(content);
     setCopied(true);
     setTimeout(() => setCopied(false), 2000);
@@ -160,7 +161,7 @@ export default function ActionableMonospaceTextBox({
         )}
       </Box>
 
-      {enableQrCode && (
+      {enableQrCode && content && (
         <QRCodeModal
           open={qrCodeOpen}
           onClose={() => setQrCodeOpen(false)}

src-gui/src/renderer/components/other/ErrorBoundary.tsx

@@ -0,0 +1,52 @@
+// Vendored from https://react-typescript-cheatsheet.netlify.app/docs/basic/getting-started/error_boundaries/
+import React, { Component, ErrorInfo, ReactNode } from "react";
+
+interface Props {
+  children?: ReactNode;
+}
+
+interface State {
+  hasError: boolean;
+  error: Error | null;
+}
+
+class ErrorBoundary extends Component<Props, State> {
+  public state: State = {
+    hasError: false,
+    error: null
+  };
+
+  public static getDerivedStateFromError(error: Error): State {
+    // Update state so the next render will show the fallback UI.
+    return { hasError: true, error };
+  }
+
+  public componentDidCatch(error: Error, errorInfo: ErrorInfo) {
+    console.error("Uncaught error:", error, errorInfo);
+  }
+
+  public render() {
+    if (this.state.hasError) {
+      return (
+        <div>
+          <h1>Sorry.. there was an error</h1>
+          <pre style={{ whiteSpace: 'pre-wrap', wordBreak: 'break-word' }}>
+            {this.state.error?.message}
+          </pre>
+          {this.state.error?.stack && (
+            <details style={{ marginTop: '1rem' }}>
+              <summary>Stack trace</summary>
+              <pre style={{ whiteSpace: 'pre-wrap', wordBreak: 'break-word', fontSize: '0.875rem' }}>
+                {this.state.error.stack}
+              </pre>
+            </details>
+          )}
+        </div>
+      );
+    }
+
+    return this.props.children;
+  }
+}
+
+export default ErrorBoundary;

src-gui/src/renderer/components/other/JSONViewTree.tsx

@@ -1,51 +0,0 @@
-import ChevronRightIcon from "@mui/icons-material/ChevronRight";
-import ExpandMoreIcon from "@mui/icons-material/ExpandMore";
-import TreeItem from "@mui/lab/TreeItem";
-import TreeView from "@mui/lab/TreeView";
-import ScrollablePaperTextBox from "./ScrollablePaperTextBox";
-
-interface JsonTreeViewProps {
-  data: unknown;
-  label: string;
-}
-
-export default function JsonTreeView({ data, label }: JsonTreeViewProps) {
-  const renderTree = (nodes: unknown, parentId: string) => {
-    return Object.keys(nodes).map((key, _) => {
-      const nodeId = `${parentId}.${key}`;
-      if (typeof nodes[key] === "object" && nodes[key] !== null) {
-        return (
-          <TreeItem nodeId={nodeId} label={key} key={nodeId}>
-            {renderTree(nodes[key], nodeId)}
-          </TreeItem>
-        );
-      }
-      return (
-        <TreeItem
-          nodeId={nodeId}
-          label={`${key}: ${nodes[key]}`}
-          key={nodeId}
-        />
-      );
-    });
-  };
-
-  return (
-    <ScrollablePaperTextBox
-      title={label}
-      copyValue={JSON.stringify(data, null, 4)}
-      rows={[
-        <TreeView
-          key={1}
-          defaultCollapseIcon={<ExpandMoreIcon />}
-          defaultExpandIcon={<ChevronRightIcon />}
-          defaultExpanded={["root"]}
-        >
-          <TreeItem nodeId="root" label={label}>
-            {renderTree(data ?? {}, "root")}
-          </TreeItem>
-        </TreeView>,
-      ]}
-    />
-  );
-}

src-gui/src/renderer/components/other/ScrollablePaperTextBox.tsx

@@ -108,7 +108,7 @@ export default function ScrollablePaperTextBox({
         <IconButton onClick={scrollToBottom} size="small">
           <KeyboardArrowDownIcon />
         </IconButton>
-        {searchQuery !== undefined && setSearchQuery !== undefined && (
+        {searchQuery !== null && setSearchQuery !== null && (
           <ExpandableSearchBox query={searchQuery} setQuery={setSearchQuery} />
         )}
       </Box>

src-gui/src/renderer/components/other/TruncatedText.tsx

@@ -9,7 +9,7 @@ export default function TruncatedText({
   ellipsis?: string;
   truncateMiddle?: boolean;
 }) {
-  let finalChildren = children ?? "";
+  const finalChildren = children ?? "";
 
   const truncatedText =
     finalChildren.length > limit

src-gui/src/renderer/components/other/Units.tsx

@@ -9,7 +9,7 @@ export function AmountWithUnit({
   unit,
   fixedPrecision,
   exchangeRate,
-  parenthesisText = null,
+  parenthesisText,
   labelStyles,
   amountStyles,
   disableTooltip = false,
@@ -18,7 +18,7 @@ export function AmountWithUnit({
   unit: string;
   fixedPrecision: number;
   exchangeRate?: Amount;
-  parenthesisText?: string;
+  parenthesisText?: string | null;
   labelStyles?: SxProps;
   amountStyles?: SxProps;
   disableTooltip?: boolean;
@@ -142,7 +142,7 @@ export function MoneroBitcoinExchangeRate({
 }) {
   const marketRate = useAppSelector((state) => state.rates?.xmrBtcRate);
   const markup =
-    displayMarkup && marketRate != null
+    displayMarkup && marketRate != null && rate != null
       ? `${getMarkup(rate, marketRate).toFixed(2)}% markup`
       : null;
 
@@ -179,7 +179,7 @@ export function MoneroSatsExchangeRate({
   rate: Amount;
   displayMarkup?: boolean;
 }) {
-  const btc = satsToBtc(rate);
+  const btc = rate == null ? null : satsToBtc(rate);
 
   return <MoneroBitcoinExchangeRate rate={btc} displayMarkup={displayMarkup} />;
 }

src-gui/src/renderer/components/pages/help/ConversationsBox.tsx

@@ -378,10 +378,6 @@ function MessageBubble({ message }: { message: Message }) {
       <Box
         sx={(theme) => ({
           padding: 1.5,
-          borderRadius:
-            typeof theme.shape.borderRadius === "number"
-              ? theme.shape.borderRadius * 2
-              : 8,
           maxWidth: "75%",
           wordBreak: "break-word",
           boxShadow: theme.shadows[1],

src-gui/src/renderer/components/pages/help/SettingsBox.tsx

@@ -432,7 +432,7 @@ function MoneroNodeUrlSetting() {
         <Box sx={{ display: "flex", alignItems: "center", gap: 1 }}>
           <ValidatedTextField
             value={moneroNodeUrl}
-            onValidatedChange={handleNodeUrlChange}
+            onValidatedChange={(value) => value && handleNodeUrlChange(value)}
             placeholder={PLACEHOLDER_MONERO_NODE_URL}
             disabled={useMoneroRpcPool}
             fullWidth
@@ -675,7 +675,7 @@ function NodeTable({
               <ValidatedTextField
                 label="Add a new node"
                 value={newNode}
-                onValidatedChange={setNewNode}
+                onValidatedChange={(value) => setNewNode(value ?? "")}
                 placeholder={placeholder}
                 fullWidth
                 isValid={isValid}
@@ -843,7 +843,9 @@ function RendezvousPointsSetting() {
                         <ValidatedTextField
                           label="Add new rendezvous point"
                           value={newPoint}
-                          onValidatedChange={setNewPoint}
+                          onValidatedChange={(value) =>
+                            setNewPoint(value ?? "")
+                          }
                           placeholder="/dns4/rendezvous.observer/tcp/8888/p2p/12D3KooWMjceGXrYuGuDMGrfmJxALnSDbK4km6s1i1sJEgDTgGQa"
                           fullWidth
                           isValid={isValidMultiAddressWithPeerId}

src-gui/src/renderer/components/pages/history/table/SwapMoneroRecoveryButton.tsx

@@ -119,9 +119,9 @@ export function SwapMoneroRecoveryButton({
         onInvoke={(): Promise<MoneroRecoveryResponse> =>
           getMoneroRecoveryKeys(swap.swap_id)
         }
-        onSuccess={(keys: MoneroRecoveryResponse) =>
+        onSuccess={(keys: MoneroRecoveryResponse) => {
-          store.dispatch(rpcSetMoneroRecoveryKeys([swap.swap_id, keys]))
+          store.dispatch(rpcSetMoneroRecoveryKeys([swap.swap_id, keys]));
-        }
+        }}
         {...props}
       >
         Display Monero Recovery Keys

src-gui/src/renderer/components/pages/monero/components/SendAmountInput.tsx

@@ -16,7 +16,7 @@ interface SendAmountInputProps {
   currency: string;
   onCurrencyChange: (currency: string) => void;
   fiatCurrency: string;
-  xmrPrice: number;
+  xmrPrice: number | null;
   showFiatRate: boolean;
   disabled?: boolean;
 }
@@ -48,6 +48,10 @@ export default function SendAmountInput({
       return "0.00";
     }
 
+    if (xmrPrice === null) {
+      return "?";
+    }
+
     const primaryValue = parseFloat(amount);
     if (currency === "XMR") {
       // Primary is XMR, secondary is USD
@@ -76,7 +80,7 @@ export default function SendAmountInput({
 
         if (currency === "XMR") {
           onAmountChange(Math.max(0, maxAmountXmr).toString());
-        } else {
+        } else if (xmrPrice !== null) {
           // Convert to USD for display
           const maxAmountUsd = maxAmountXmr * xmrPrice;
           onAmountChange(Math.max(0, maxAmountUsd).toString());
@@ -103,8 +107,9 @@ export default function SendAmountInput({
     (currency === "XMR"
       ? parseFloat(amount) >
         piconerosToXmr(parseFloat(balance.unlocked_balance))
-      : parseFloat(amount) / xmrPrice >
+      : xmrPrice !== null &&
-        piconerosToXmr(parseFloat(balance.unlocked_balance)));
+        parseFloat(amount) / xmrPrice >
+          piconerosToXmr(parseFloat(balance.unlocked_balance)));
 
   return (
     <Card
@@ -203,14 +208,11 @@ export default function SendAmountInput({
         }}
       >
         <Typography color="text.secondary">Available</Typography>
-        <Box sx={{ display: "flex", alignItems: "baseline", gap: 0.5 }}>
+        <Typography color="text.primary">
-          <Typography color="text.primary">
+          <MoneroAmount
-            <MoneroAmount
+            amount={piconerosToXmr(parseFloat(balance.unlocked_balance))}
-              amount={piconerosToXmr(parseFloat(balance.unlocked_balance))}
+          />
-            />
+        </Typography>
-          </Typography>
-          <Typography color="text.secondary">XMR</Typography>
-        </Box>
         <Button
           variant={isMaxSelected ? "contained" : "secondary"}
           size="tiny"

src-gui/src/renderer/components/pages/monero/components/SendSuccessContent.tsx

@@ -20,10 +20,9 @@ export default function SendSuccessContent({
 }) {
   const address = successDetails?.address;
   const amount = successDetails?.amount_sent;
-  const explorerUrl = getMoneroTxExplorerUrl(
+  const explorerUrl = successDetails?.tx_hash
-    successDetails?.tx_hash,
+    ? getMoneroTxExplorerUrl(successDetails.tx_hash, isTestnet())
-    isTestnet(),
+    : null;
-  );
 
   return (
     <Box
@@ -79,7 +78,7 @@ export default function SendSuccessContent({
           </Typography>
           <Typography variant="body1" color="text.primary">
             <MonospaceTextBox>
-              {address.slice(0, 8)} ... {address.slice(-8)}
+              {address ? `${address.slice(0, 8)}...${address.slice(-8)}` : "?"}
             </MonospaceTextBox>
           </Typography>
         </Box>
@@ -98,8 +97,13 @@ export default function SendSuccessContent({
         <Button
           color="primary"
           size="small"
+          disabled={explorerUrl == null}
           endIcon={<ArrowOutwardIcon />}
-          onClick={() => open(explorerUrl)}
+          onClick={() => {
+            if (explorerUrl != null) {
+              open(explorerUrl);
+            }
+          }}
         >
           View on Explorer
         </Button>

src-gui/src/renderer/components/pages/monero/components/SendTransactionContent.tsx

@@ -90,7 +90,9 @@ export default function SendTransactionContent({
   const moneroAmount =
     currency === "XMR"
       ? parseFloat(sendAmount)
-      : parseFloat(sendAmount) / xmrPrice;
+      : xmrPrice !== null
+        ? parseFloat(sendAmount) / xmrPrice
+        : null;
 
   const handleSend = async () => {
     if (!sendAddress) {
@@ -103,7 +105,7 @@ export default function SendTransactionContent({
         amount: { type: "Sweep" },
       });
     } else {
-      if (!sendAmount || sendAmount === "<MAX>") {
+      if (!sendAmount || sendAmount === "<MAX>" || moneroAmount === null) {
         throw new Error("Amount is required");
       }
 

src-gui/src/renderer/components/pages/monero/components/StateIndicator.tsx

@@ -1,6 +1,6 @@
 import { Box, darken, lighten, useTheme } from "@mui/material";
 
-function getColor(colorName: string) {
+function getColor(colorName: string): string {
   const theme = useTheme();
   switch (colorName) {
     case "primary":
@@ -11,6 +11,8 @@ function getColor(colorName: string) {
       return theme.palette.success.main;
     case "warning":
       return theme.palette.warning.main;
+    default:
+      return theme.palette.primary.main;
   }
 }
 

src-gui/src/renderer/components/pages/monero/components/TransactionHistory.tsx

@@ -5,9 +5,9 @@ import dayjs from "dayjs";
 import TransactionItem from "./TransactionItem";
 
 interface TransactionHistoryProps {
-  history?: {
+  history: {
     transactions: TransactionInfo[];
-  };
+  } | null;
 }
 
 interface TransactionGroup {

src-gui/src/renderer/components/pages/monero/components/WalletOverview.tsx

@@ -4,7 +4,10 @@ import { PiconeroAmount } from "../../../other/Units";
 import { FiatPiconeroAmount } from "../../../other/Units";
 import StateIndicator from "./StateIndicator";
 import humanizeDuration from "humanize-duration";
-import { GetMoneroSyncProgressResponse } from "models/tauriModel";
+import {
+  GetMoneroBalanceResponse,
+  GetMoneroSyncProgressResponse,
+} from "models/tauriModel";
 
 interface TimeEstimationResult {
   blocksLeft: number;
@@ -16,7 +19,7 @@ interface TimeEstimationResult {
 const AVG_MONERO_BLOCK_SIZE_KB = 130;
 
 function useSyncTimeEstimation(
-  syncProgress: GetMoneroSyncProgressResponse | undefined,
+  syncProgress: GetMoneroSyncProgressResponse | null,
 ): TimeEstimationResult | null {
   const poolStatus = useAppSelector((state) => state.pool.status);
   const restoreHeight = useAppSelector(
@@ -80,11 +83,8 @@ function useSyncTimeEstimation(
 }
 
 interface WalletOverviewProps {
-  balance?: {
+  balance: GetMoneroBalanceResponse | null;
-    unlocked_balance: string;
+  syncProgress: GetMoneroSyncProgressResponse | null;
-    total_balance: string;
-  };
-  syncProgress?: GetMoneroSyncProgressResponse;
 }
 
 // Component for displaying wallet address and balance
@@ -99,10 +99,11 @@ export default function WalletOverview({
   const poolStatus = useAppSelector((state) => state.pool.status);
   const timeEstimation = useSyncTimeEstimation(syncProgress);
 
-  const pendingBalance =
+  const pendingBalance = balance
-    parseFloat(balance.total_balance) - parseFloat(balance.unlocked_balance);
+    ? parseFloat(balance.total_balance) - parseFloat(balance.unlocked_balance)
+    : null;
 
-  const isSyncing = syncProgress && syncProgress.progress_percentage < 100;
+  const isSyncing = !!(syncProgress && syncProgress.progress_percentage < 100);
 
   // syncProgress.progress_percentage is not good to display
   // assuming we have an old wallet, eventually we will always only use the last few cm of the progress bar
@@ -184,18 +185,18 @@ export default function WalletOverview({
             </Typography>
             <Typography variant="h4">
               <PiconeroAmount
-                amount={parseFloat(balance.unlocked_balance)}
+                amount={balance ? parseFloat(balance.unlocked_balance) : null}
                 fixedPrecision={4}
                 disableTooltip
               />
             </Typography>
             <Typography variant="body2" color="text.secondary">
               <FiatPiconeroAmount
-                amount={parseFloat(balance.unlocked_balance)}
+                amount={balance ? parseFloat(balance.unlocked_balance) : null}
               />
             </Typography>
           </Box>
-          {pendingBalance > 0 && (
+          {pendingBalance !== null && pendingBalance > 0 && (
             <Box
               sx={{
                 display: "flex",

src-gui/src/renderer/components/pages/monero/components/WalletPageLoadingState.tsx

@@ -71,8 +71,8 @@ export default function WalletPageLoadingState() {
       </Skeleton>
 
       <Box sx={{ display: "flex", flexDirection: "row", gap: 2, mb: 2 }}>
-        {Array.from({ length: 2 }).map((_) => (
+        {Array.from({ length: 2 }).map((_, i) => (
-          <Skeleton variant="rounded" sx={{ borderRadius: "100px" }}>
+          <Skeleton key={i} variant="rounded" sx={{ borderRadius: "100px" }}>
             <Chip label="Loading..." variant="button" />
           </Skeleton>
         ))}

src-gui/src/renderer/components/pages/swap/swap/components/InfoBox.tsx

@@ -2,7 +2,7 @@ import { Box, LinearProgress, Paper, Typography } from "@mui/material";
 import { ReactNode } from "react";
 
 type Props = {
-  id?: string;
+  id?: string | null;
   title: ReactNode | null;
   mainContent: ReactNode;
   additionalContent: ReactNode;
@@ -11,7 +11,7 @@ type Props = {
 };
 
 export default function InfoBox({
-  id = null,
+  id,
   title,
   mainContent,
   additionalContent,
@@ -21,7 +21,7 @@ export default function InfoBox({
   return (
     <Paper
       variant="outlined"
-      id={id}
+      id={id ?? undefined}
       sx={{
         padding: 1.5,
         overflow: "hidden",

src-gui/src/renderer/components/pages/swap/swap/init/deposit_and_choose_offer/DepositAndChooseOfferPage.tsx

@@ -107,8 +107,8 @@ export default function DepositAndChooseOfferPage({
                   return (
                     <MakerOfferItem
                       key={startIndex + index}
-                      quoteWithAddress={quote}
+                      quoteWithAddress={quote.quote_with_address}
-                      requestId={quote.request_id}
+                      requestId={quote.approval?.request_id}
                     />
                   );
                 })}

src-gui/src/renderer/components/pages/swap/swap/init/deposit_and_choose_offer/MakerOfferItem.tsx

@@ -111,7 +111,12 @@ export default function MakerOfferItem({
       <Box sx={{ display: "flex", flexDirection: "column", gap: 1 }}>
         <PromiseInvokeButton
           variant="contained"
-          onInvoke={() => resolveApproval(requestId, true as unknown as object)}
+          onInvoke={() => {
+            if (!requestId) {
+              throw new Error("Request ID is required");
+            }
+            return resolveApproval(requestId, true as unknown as object);
+          }}
           displayErrorSnackbar
           disabled={!requestId}
           tooltipTitle={

src-gui/src/renderer/components/pages/wallet/components/WalletDescriptorButton.tsx

@@ -13,7 +13,10 @@ import ActionableMonospaceTextBox from "renderer/components/other/ActionableMono
 import { getWalletDescriptor } from "renderer/rpc";
 import { ExportBitcoinWalletResponse } from "models/tauriModel";
 import PromiseInvokeButton from "renderer/components/PromiseInvokeButton";
-import { isContextWithBitcoinWallet } from "models/tauriModelExt";
+import {
+  isContextWithBitcoinWallet,
+  hasDescriptorProperty,
+} from "models/tauriModelExt";
 
 const WALLET_DESCRIPTOR_DOCS_URL =
   "https://github.com/eigenwallet/core/blob/master/dev-docs/asb/README.md#exporting-the-bitcoin-wallet-descriptor";
@@ -58,8 +61,12 @@ function WalletDescriptorModal({
   onClose: () => void;
   walletDescriptor: ExportBitcoinWalletResponse;
 }) {
+  if (!hasDescriptorProperty(walletDescriptor)) {
+    throw new Error("Wallet descriptor does not have descriptor property");
+  }
+
   const parsedDescriptor = JSON.parse(
-    walletDescriptor.wallet_descriptor["descriptor"],
+    walletDescriptor.wallet_descriptor.descriptor,
   );
   const stringifiedDescriptor = JSON.stringify(parsedDescriptor, null, 4);
 

src-gui/src/renderer/components/theme.tsx

@@ -24,7 +24,7 @@ declare module "@mui/material/styles" {
     tint?: string;
   }
 
-  interface PaletteColorOptions {
+  interface SimplePaletteColorOptions {
     tint?: string;
   }
 }
@@ -61,16 +61,6 @@ const baseTheme: ThemeOptions = {
             backgroundColor: "color-mix(in srgb, #bdbdbd 10%, transparent)",
           },
         },
-        sizeTiny: {
-          fontSize: "0.75rem",
-          fontWeight: 500,
-          padding: "4px 8px",
-          minHeight: "24px",
-          minWidth: "auto",
-          lineHeight: 1.2,
-          textTransform: "none",
-          borderRadius: "4px",
-        },
       },
       variants: [
         {

src-gui/src/renderer/rpc.ts

@@ -210,7 +210,13 @@ export async function buyXmr() {
 
     address_pool.push(
       {
-        address: moneroReceiveAddress,
+        // We need to assert this as being not null even though it can be null
+        //
+        // This is correct because a LabeledMoneroAddress can actually have a null address but
+        // typeshare cannot express that yet (easily)
+        //
+        // TODO: Let typescript do its job here and not assert it
+        address: moneroReceiveAddress!,
         percentage: 1 - donationPercentage,
         label: "Your wallet",
       },
@@ -222,7 +228,13 @@ export async function buyXmr() {
     );
   } else {
     address_pool.push({
-      address: moneroReceiveAddress,
+      // We need to assert this as being not null even though it can be null
+      //
+      // This is correct because a LabeledMoneroAddress can actually have a null address but
+      // typeshare cannot express that yet (easily)
+      //
+      // TODO: Let typescript do its job here and not assert it
+      address: moneroReceiveAddress!,
       percentage: 1,
       label: "Your wallet",
     });
@@ -232,7 +244,9 @@ export async function buyXmr() {
     rendezvous_points: PRESET_RENDEZVOUS_POINTS,
     sellers,
     monero_receive_pool: address_pool,
-    bitcoin_change_address: bitcoinChangeAddress,
+    // We convert null to undefined because typescript
+    // expects undefined if the field is optional and does not accept null here
+    bitcoin_change_address: bitcoinChangeAddress ?? undefined,
   });
 }
 
@@ -284,7 +298,7 @@ export async function initializeContext() {
     });
     logger.info("Initialized context");
   } catch (error) {
-    throw new Error(error);
+    throw new Error(String(error));
   }
 }
 
@@ -340,12 +354,12 @@ export async function getSwapInfo(swapId: string) {
 }
 
 export async function getSwapTimelock(swapId: string) {
-  const response = await invoke<
+  const response = await invoke<GetSwapTimelockArgs, GetSwapTimelockResponse>(
-    GetSwapTimelockArgs,
+    "get_swap_timelock",
-    GetSwapTimelockResponse
+    {
-  >("get_swap_timelock", {
+      swap_id: swapId,
-    swap_id: swapId,
+    },
-  });
+  );
 
   store.dispatch(
     timelockChangeEventReceived({
@@ -369,12 +383,12 @@ export async function getAllSwapTimelocks() {
   );
 }
 
-export async function withdrawBtc(address: string): Promise<string> {
+export async function sweepBtc(address: string): Promise<string> {
   const response = await invoke<WithdrawBtcArgs, WithdrawBtcResponse>(
     "withdraw_btc",
     {
       address,
-      amount: null,
+      amount: undefined,
     },
   );
 

src-gui/src/store/features/makersSlice.ts

@@ -30,31 +30,6 @@ const initialState: MakersSlice = {
   selectedMaker: null,
 };
 
-function selectNewSelectedMaker(
-  slice: MakersSlice,
-  peerId?: string,
-): MakerStatus {
-  const selectedPeerId = peerId || slice.selectedMaker?.peerId;
-
-  // Check if we still have a record of the currently selected provider
-  const currentMaker =
-    slice.registry.makers?.find((prov) => prov.peerId === selectedPeerId) ||
-    slice.rendezvous.makers.find((prov) => prov.peerId === selectedPeerId);
-
-  // If the currently selected provider is not outdated, keep it
-  if (currentMaker != null && !isMakerOutdated(currentMaker)) {
-    return currentMaker;
-  }
-
-  // Otherwise we'd prefer to switch to a provider that has the newest version
-  const providers = [
-    ...(slice.registry.makers ?? []),
-    ...(slice.rendezvous.makers ?? []),
-  ];
-
-  return providers.at(0) || null;
-}
-
 export const makersSlice = createSlice({
   name: "providers",
   initialState,
@@ -83,32 +58,15 @@ export const makersSlice = createSlice({
           slice.rendezvous.makers.push(discoveredMakerStatus);
         }
       });
-
-      // Sort the provider list and select a new provider if needed
-      slice.selectedMaker = selectNewSelectedMaker(slice);
     },
     setRegistryMakers(slice, action: PayloadAction<ExtendedMakerStatus[]>) {
       if (stubTestnetMaker) {
         action.payload.push(stubTestnetMaker);
       }
-
-      // Sort the provider list and select a new provider if needed
-      slice.selectedMaker = selectNewSelectedMaker(slice);
     },
     registryConnectionFailed(slice) {
       slice.registry.connectionFailsCount += 1;
     },
-    setSelectedMaker(
-      slice,
-      action: PayloadAction<{
-        peerId: string;
-      }>,
-    ) {
-      slice.selectedMaker = selectNewSelectedMaker(
-        slice,
-        action.payload.peerId,
-      );
-    },
   },
 });
 
@@ -116,7 +74,6 @@ export const {
   discoveredMakersByRendezvous,
   setRegistryMakers,
   registryConnectionFailed,
-  setSelectedMaker,
 } = makersSlice.actions;
 
 export default makersSlice.reducer;

src-gui/src/store/features/rpcSlice.ts

@@ -89,8 +89,10 @@ export const rpcSlice = createSlice({
       slice: RPCSlice,
       action: PayloadAction<TauriTimelockChangeEvent>,
     ) {
-      slice.state.swapTimelocks[action.payload.swap_id] =
+      if (action.payload.timelock) {
-        action.payload.timelock;
+        slice.state.swapTimelocks[action.payload.swap_id] =
+          action.payload.timelock;
+      }
     },
     rpcSetWithdrawTxId(slice, action: PayloadAction<string>) {
       slice.state.withdrawTxId = action.payload;

src-gui/src/store/features/walletSlice.ts

@@ -48,8 +48,8 @@ export const walletSlice = createSlice({
       slice.state.lowestCurrentBlock = Math.min(
         // We ignore anything below 10 blocks as this may be something like wallet2
         // sending a wrong value when it hasn't initialized yet
-        slice.state.lowestCurrentBlock < 10 ||
+        slice.state.lowestCurrentBlock === null ||
-          slice.state.lowestCurrentBlock === null
+          slice.state.lowestCurrentBlock < 10
           ? Infinity
           : slice.state.lowestCurrentBlock,
         action.payload.current_block,

src-gui/src/store/hooks.ts

@@ -253,7 +253,11 @@ export function useBitcoinSyncProgress(): TauriBitcoinSyncProgress[] {
   const syncingProcesses = pendingProcesses
     .map(([_, c]) => c)
     .filter(isBitcoinSyncProgress);
-  return syncingProcesses.map((c) => c.progress.content);
+  return syncingProcesses
+    .map((c) => c.progress.content)
+    .filter(
+      (content): content is TauriBitcoinSyncProgress => content !== undefined,
+    );
 }
 
 export function isSyncingBitcoin(): boolean {

src-gui/src/store/selectors.ts

@@ -18,10 +18,9 @@ export const selectSwapTimelocks = createSelector(
   (rpcState) => rpcState.swapTimelocks,
 );
 
-export const selectSwapTimelock = (swapId: string) =>
+export const selectSwapTimelock = (swapId: string | null) =>
-  createSelector(
+  createSelector([selectSwapTimelocks], (timelocks) =>
-    [selectSwapTimelocks],
+    swapId ? (timelocks[swapId] ?? null) : null,
-    (timelocks) => timelocks[swapId] ?? null,
   );
 
 export const selectSwapInfoWithTimelock = (swapId: string) =>

src-gui/src/utils/sortUtils.ts

@@ -10,48 +10,47 @@ export function sortApprovalsAndKnownQuotes(
   pendingSelectMakerApprovals: PendingSelectMakerApprovalRequest[],
   known_quotes: QuoteWithAddress[],
 ) {
-  const sortableQuotes = pendingSelectMakerApprovals.map((approval) => {
+  const sortableQuotes: SortableQuoteWithAddress[] =
-    return {
+    pendingSelectMakerApprovals.map((approval) => {
-      ...approval.request.content.maker,
+      return {
-      expiration_ts:
+        quote_with_address: approval.request.content.maker,
-        approval.request_status.state === "Pending"
+        approval:
-          ? approval.request_status.content.expiration_ts
+          approval.request_status.state === "Pending"
-          : undefined,
+            ? {
-      request_id: approval.request_id,
+                request_id: approval.request_id,
-    } as SortableQuoteWithAddress;
+                expiration_ts: approval.request_status.content.expiration_ts,
-  });
+              }
+            : null,
+      };
+    });
 
   sortableQuotes.push(
     ...known_quotes.map((quote) => ({
-      ...quote,
+      quote_with_address: quote,
-      request_id: null,
+      approval: null,
     })),
   );
 
-  return sortMakerApprovals(sortableQuotes);
-}
-
-export function sortMakerApprovals(list: SortableQuoteWithAddress[]) {
   return (
-    _(list)
+    _(sortableQuotes)
       .orderBy(
         [
           // Prefer makers that have a 'version' attribute
           // If we don't have a version, we cannot clarify if it's outdated or not
-          (m) => (m.version ? 0 : 1),
+          (m) => (m.quote_with_address.version ? 0 : 1),
           // Prefer makers with a minimum quantity > 0
-          (m) => ((m.quote.min_quantity ?? 0) > 0 ? 0 : 1),
+          (m) => ((m.quote_with_address.quote.min_quantity ?? 0) > 0 ? 0 : 1),
           // Prefer makers that are not outdated
-          (m) => (isMakerVersionOutdated(m.version) ? 1 : 0),
+          (m) => (isMakerVersionOutdated(m.quote_with_address.version) ? 1 : 0),
           // Prefer approvals over actual quotes
-          (m) => (m.request_id ? 0 : 1),
+          (m) => (m.approval ? 0 : 1),
           // Prefer makers with a lower price
-          (m) => m.quote.price,
+          (m) => m.quote_with_address.quote.price,
         ],
         ["asc", "asc", "asc", "asc", "asc"],
       )
       // Remove duplicate makers
-      .uniqBy((m) => m.peer_id)
+      .uniqBy((m) => m.quote_with_address.peer_id)
       .value()
   );
 }

src-gui/tsconfig.json

@@ -15,7 +15,7 @@
     "jsx": "react-jsx",
 
     /* Linting */
-    "strict": false,
+    "strict": true,
     "noUnusedLocals": false,
     "noUnusedParameters": false,
     "noFallthroughCasesInSwitch": false,

src-gui/yarn.lock

@@ -532,18 +532,6 @@
   dependencies:
     "@babel/runtime" "^7.28.2"
     
-"@mui/lab@^7.0.0-beta.13":
-  version "7.0.0-beta.16"
-  resolved "https://registry.yarnpkg.com/@mui/lab/-/lab-7.0.0-beta.16.tgz#99045e2840c3f4db0383cdcc477af8c7b60c83a2"
-  integrity sha512-YiyDU84F6ujjaa5xuItuXa40KN1aPC+8PBkP2OAOJGO2MMvdEicuvkEfVSnikH6uLHtKOwGzOeqEqrfaYxcOxw==
-  dependencies:
-    "@babel/runtime" "^7.28.2"
-    "@mui/system" "^7.3.1"
-    "@mui/types" "^7.4.5"
-    "@mui/utils" "^7.3.1"
-    clsx "^2.1.1"
-    prop-types "^15.8.1"
-
 "@mui/material@^7.1.1":
   version "7.3.1"
   resolved "https://registry.yarnpkg.com/@mui/material/-/material-7.3.1.tgz#bd1bf1344cc7a69b6e459248b544f0ae97945b1d"

swap-core/src/monero/primitives.rs

@@ -216,6 +216,7 @@ impl Amount {
 #[typeshare]
 pub struct LabeledMoneroAddress {
     // If this is None, we will use an address of the internal Monero wallet
+    // TODO: This should be string | null but typeshare cannot do that yet
     #[typeshare(serialized_as = "string")]
     address: Option<monero::Address>,
     #[typeshare(serialized_as = "number")]

swap/src/common/tracing_util.rs

@@ -78,9 +78,7 @@ pub fn init(
     let tracing_file_layer = json_rolling_layer!(
         &dir,
         "tracing",
-        env_filter_with_all_crates(vec![
+        env_filter_with_all_crates(vec![(crates::OUR_CRATES.to_vec(), LevelFilter::TRACE)]),
-            (crates::OUR_CRATES.to_vec(), LevelFilter::TRACE)
-        ]),
         24
     );
 
@@ -104,7 +102,10 @@ pub fn init(
     let monero_wallet_file_layer = json_rolling_layer!(
         &dir,
         "tracing-monero-wallet",
-        env_filter_with_all_crates(vec![(crates::MONERO_WALLET_CRATES.to_vec(), LevelFilter::TRACE)]),
+        env_filter_with_all_crates(vec![(
+            crates::MONERO_WALLET_CRATES.to_vec(),
+            LevelFilter::TRACE
+        )]),
         24
     );
 
@@ -145,7 +146,9 @@ pub fn init(
             (crates::LIBP2P_CRATES.to_vec(), LevelFilter::INFO),
             (crates::TOR_CRATES.to_vec(), LevelFilter::INFO),
         ])?,
-        false => env_filter_with_all_crates(vec![(crates::OUR_CRATES.to_vec(), LevelFilter::INFO)])?,
+        false => {
+            env_filter_with_all_crates(vec![(crates::OUR_CRATES.to_vec(), LevelFilter::INFO)])?
+        }
     };
 
     let final_terminal_layer = match format {
@@ -227,10 +230,7 @@ mod crates {
         "unstoppableswap_gui_rs",
     ];
 
-    pub const MONERO_WALLET_CRATES: &[&str] = &[
+    pub const MONERO_WALLET_CRATES: &[&str] = &["monero_cpp", "monero_rpc_pool"];
-        "monero_cpp",
-        "monero_rpc_pool",
-    ];
 }
 
 /// A writer that forwards tracing log messages to the tauri guest.