Merge pull request #4 from bwindels/bwindels/lumia-fixes

Make what we have so far work on Lumia 950
2019-06-26 20:27:26 +00:00 · 2019-06-26 20:27:26 +00:00 · 56ae6670be
parent 9cd5257959 1c89ce2ed9
commit 56ae6670be
31 changed files with 827 additions and 104 deletions
--- a/.gitignore
+++ b/.gitignore
@ -1,3 +1,4 @@
 *.sublime-project
 *.sublime-workspace
-node_modules
+node_modules
+bundle.js
--- a/index-build-debug.html
+++ b/index-build-debug.html
@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<html>
+	<head>
+		<meta charset="utf-8">
+        <meta charset="utf-8">
+        <meta name="viewport" content="width=device-width, user-scalable=no">
+        <meta name="application-name" content="Brawl Chat"/>
+        <link rel="stylesheet" type="text/css" href="src/ui/web/css/main.css">
+	</head>
+	<body>
+        <script type="text/javascript" src="bundle.js"></script>
+		<script type="text/javascript">
+            window.DEBUG = true;
+            let buf = "";
+            console.error = (...params) => {
+                const lastLines = "...\n" + buf.split("\n").slice(-10).join("\n");
+                // buf = buf + "ERR " + params.join(" ") + "\n";
+                // const location = new Error().stack.split("\n")[2];
+                alert(params.join(" ") +"\n...\n" + lastLines);
+            };
+            console.log = console.info = console.warn = (...params) => {
+                buf = buf + params.join(" ") + "\n";
+            };
+            main(document.body);
+            setTimeout(() => {
+                const showlogs = document.getElementById("showlogs");
+                showlogs.addEventListener("click", () => {
+                    const lastLines = "...\n" + buf.split("\n").slice(-20).join("\n");
+                    alert(lastLines);
+                }, true);
+                showlogs.innerText = "Show last 20 log lines";
+            }, 1000);
+            // (async () => {
+            //     try {
+            //         const js = await (await fetch("bundle.js")).text();
+            //         eval(js+";main(document.body);");
+            //     } catch(err) {
+            //         alert(err.message);
+            //     }
+            // })();
+		</script>
+	</body>
+</html>
--- a/index-build.html
+++ b/index-build.html
@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html>
+	<head>
+		<meta charset="utf-8">
+        <link rel="stylesheet" type="text/css" href="src/ui/web/css/main.css">
+	</head>
+	<body>
+        <script type="text/javascript" src="bundle.js"></script>
+		<script type="text/javascript">
+            main(document.body);
+		</script>
+	</body>
+</html>
--- a/package.json
+++ b/package.json
@ -8,7 +8,8 @@
  },
  "scripts": {
    "test": "node_modules/.bin/impunity --entryPoint src/main.js --force-esm",
-    "start": "node scripts/serve-local.js"
+    "start": "node scripts/serve-local.js",
+    "build": "node_modules/rollup/bin/rollup -c"
  },
  "repository": {
    "type": "git",
@ -23,6 +24,7 @@
  "devDependencies": {
    "finalhandler": "^1.1.1",
    "impunity": "^0.0.7",
+    "rollup": "^1.15.6",
    "serve-static": "^1.13.2"
  }
 }
--- a/prototypes/base256.html
+++ b/prototypes/base256.html
@ -0,0 +1,30 @@
+<html>
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+</head>
+<body>
+    <script type="text/javascript">
+        function encodeNumber(n) {
+            const a = (n & 0xFFFF);
+            const b = (n & 0xFFFF0000) >> 16;
+            const c = (n & 0xFFFF00000000) >> 32;
+            const d = (n & 0xFFFF000000000000) >> 48;
+            return String.fromCharCode(a, b, c, d);
+        }
+
+        function printN(n) {
+            //document.write(`<p>fn(${n}) = ${encodeNumber(n)}</p>`);
+            console.log(n, encodeNumber(n));
+        }
+
+        printN(0);
+        printN(9);
+        printN(1000);
+        printN(Number.MAX_SAFE_INTEGER);
+
+
+    </script>
+</body>
+</html>
+ 
--- a/prototypes/idb-cmp-numbers.html
+++ b/prototypes/idb-cmp-numbers.html
@ -0,0 +1,110 @@
+<html>
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <style type="text/css">
+        pre {
+            font-family: monospace;
+            display: block;
+            white-space: pre;
+            font-size: 2em;
+        }
+    </style>
+</head>
+<body>
+    <script type="text/javascript">
+
+        const MIN = 0;
+        const MAX = 0xFFFFFFFF;
+
+        function zeropad(a, n) {
+            return "0".repeat(n - a.length) + a;
+        }
+
+        // const encodeNumber = n => zeropad((n >>> 0).toString(16), 8);
+
+        function encodeNumber(n) {
+            const a = (n & 0xFFFF0000) >>> 16;
+            const b = (n & 0xFFFF) >>> 0;
+            //return zeropad(a.toString(16), 4) + zeropad(b.toString(16), 4);
+            return String.fromCharCode(a, b);
+        }
+
+        function decodeNumber(s) {
+            const a = s.charCodeAt(0);
+            const b = s.charCodeAt(1);
+            //return `${a.toString(16)} ${b}`;
+            return ((a << 16) | b) >>> 0;
+        }
+
+        function formatArg(a) {
+            if (typeof a === "string") {
+                return `"${a}"`;
+            }
+            if (Array.isArray(a)) {
+                return `[${a.map(formatArg)}]`;
+            }
+            return a+"";
+        }
+        function cmp(a, b) {
+            let value;
+            try {
+                const result = indexedDB.cmp(encodeNumber(a), encodeNumber(b));
+                if (result < 0) {
+                    value = "a < b";
+                } else if (result === 0) {
+                    value = "a = b";
+                } else if (result > 0) {
+                    value = "a > b";
+                }
+            } catch(err) {
+                value = err.message;
+            }
+            return `cmp(${formatArg(a)} as ${formatArg(encodeNumber(a))},\n    ${formatArg(b)} as ${formatArg(encodeNumber(b))}): ${value}`;
+        }
+
+        try {
+            const tests = [
+                // see https://stackoverflow.com/questions/28413947/space-efficient-way-to-encode-numbers-as-sortable-strings
+                // need to encode numbers with base 256 and zero padded at start
+                // should still fit in 8 bytes then?
+                (cmp) => cmp(9, 100000),
+                (cmp) => cmp(1, 2),
+                (cmp) => cmp(MIN, 1),
+                (cmp) => cmp(MIN, MIN),
+                (cmp) => cmp(MIN, MAX),
+                (cmp) => cmp(MAX >>> 1, MAX),
+                (cmp) => cmp(0x7fffffff, 0xffff7fff),
+                (cmp) => cmp(MAX, MAX),
+                (cmp) => cmp(MAX - 1, MAX),
+            ];
+
+            for (const fn of tests) {
+                const txt = document.createTextNode(fn(cmp));
+                const p = document.createElement("pre");
+                p.appendChild(txt);
+                document.body.appendChild(p);
+            }
+        } catch(err) {
+            alert(err.message);
+        }
+
+        let prev;
+        for (let i = MIN; i <= MAX; i += 100) {
+            if (decodeNumber(encodeNumber(i)) !== i) {
+                document.write(`<p>${i} decodes back to ${decodeNumber(encodeNumber(i))}</p>`);
+                break;
+            }
+            if (typeof prev === "number") {
+                if (indexedDB.cmp(encodeNumber(prev), encodeNumber(i)) >= 0) {
+                    document.write(`<p>${i} <= ${prev}</p>`);
+                    break;
+                }
+            }
+            prev = i;
+        }
+        document.write(`<p>check from ${MIN} to ${prev}</p>`);
+    </script>
+</body>
+</html>
+ 
--- a/prototypes/idb-cmp.html
+++ b/prototypes/idb-cmp.html
@ -0,0 +1,76 @@
+<html>
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <style type="text/css">
+        pre {
+            font-family: "courier";
+            display: block;
+            white-space: pre;
+        }
+    </style>
+</head>
+<body>
+    <script type="text/javascript">
+        function encodeNumber(n) {
+            const a = (n & 0xFFFF);
+            const b = (n & 0xFFFF0000) >> 16;
+            const c = (n & 0xFFFF00000000) >> 32;
+            const d = (n & 0xFFFF000000000000) >> 48;
+            return String.fromCharCode(a, b, c, d);
+        }
+        function formatArg(a) {
+            if (typeof a === "string") {
+                return `"${a}"`;
+            }
+            if (Array.isArray(a)) {
+                return `[${a.map(formatArg)}]`;
+            }
+            return a+"";
+        }
+        function cmp(a, b) {
+            let value;
+            try {
+                const result = indexedDB.cmp(encodeNumber(a), encodeNumber(b));
+                if (result < 0) {
+                    value = "a < b";
+                } else if (result === 0) {
+                    value = "a = b";
+                } else if (result > 0) {
+                    value = "a > b";
+                }
+            } catch(err) {
+                value = err.message;
+            }
+            return `cmp(${formatArg(a)},\n    ${formatArg(b)}): ${value}`;
+        }
+
+        try {
+            const tests = [
+                (cmp) => cmp(Number.MIN_SAFE_INTEGER, Number.MAX_SAFE_INTEGER),
+                (cmp) => cmp([Number.MIN_SAFE_INTEGER], [Number.MAX_SAFE_INTEGER]),
+                // see https://stackoverflow.com/questions/28413947/space-efficient-way-to-encode-numbers-as-sortable-strings
+                // need to encode numbers with base 256 and zero padded at start
+                // should still fit in 8 bytes then?
+                (cmp) => cmp("foo-9", "foo-10000"),
+                (cmp) => cmp("foo-\u0000", "foo-\uFFFF"),
+                (cmp) => cmp("foo-\u0000", "foo-0"),
+                (cmp) => cmp("foo-" + Number.MAX_SAFE_INTEGER, "foo-\uFFFF"),
+                (cmp) => cmp("!abc:host.tld,"+Number.MIN_SAFE_INTEGER, "!abc:host.tld,"+(Number.MIN_SAFE_INTEGER + 1)),
+                (cmp) => cmp("!abc:host.tld,"+0, "!abc:host.tld,"+(Number.MAX_SAFE_INTEGER)),
+                (cmp) => cmp("!abc:host.tld,"+Math.floor(Number.MAX_SAFE_INTEGER / 2), "!abc:host.tld,"+(Number.MAX_SAFE_INTEGER)),
+            ];
+
+            for (const fn of tests) {
+                const txt = document.createTextNode(fn(cmp));
+                const p = document.createElement("pre");
+                p.appendChild(txt);
+                document.body.appendChild(p);
+            }
+        } catch(err) {
+            alert(err.message);
+        }
+    </script>
+</body>
+</html>
+ 
--- a/prototypes/idb-continue-key.html
+++ b/prototypes/idb-continue-key.html
@ -2,6 +2,11 @@
 <head><meta charset="utf-8"></head>
 <body>
 	<script type="text/javascript">
+
+        console.log = (...params) => {
+            document.write(params.join(" ")+"<br>");
+        };
+
        function reqAsPromise(req) {
            return new Promise((resolve, reject) => {
                req.onsuccess = () => resolve(req);
--- a/prototypes/idb-multi-key.html
+++ b/prototypes/idb-multi-key.html
@ -0,0 +1,75 @@
+<html>
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+</head>
+<body>
+    <script type="text/javascript">
+        function reqAsPromise(req) {
+            return new Promise((resolve, reject) => {
+                req.onsuccess = () => resolve(req);
+                req.onerror = (err) => reject(err);
+            });
+        }
+
+        class Storage {
+            constructor(databaseName) {
+                this._databaseName = databaseName;
+                this._database = null;
+            }
+
+            async open() {
+                const req = window.indexedDB.open(this._databaseName);
+                req.onupgradeneeded = (ev) => {
+                    const db = ev.target.result;
+                    const oldVersion = ev.oldVersion;
+                    this._createStores(db, oldVersion);
+                }; 
+                await reqAsPromise(req);
+                this._database = req.result;
+            }
+
+            _createStores(db) {
+                db.createObjectStore("files", {keyPath: ["idName"]});
+            }
+
+            async storeFoo(id, name) {
+                const tx = this._database.transaction(["files"], "readwrite");
+                const store = tx.objectStore("files");
+                await reqAsPromise(store.add(value(id, name)));
+            }
+        }
+
+        function value(id, name) {
+            return {idName: key(id, name)};
+        }
+
+        function key(id, name) {
+            return id+","+name;
+        }
+
+        async function main() {
+            let storage = new Storage("idb-multi-key2");
+            try {
+                await storage.open();
+                await storage.storeFoo(5, "foo");
+                await storage.storeFoo(6, "bar");
+                alert("all good");
+            } catch(err) {
+                alert(err.message);
+            }
+            try {
+                const result = indexedDB.cmp(key(5, "foo"), key(6, "bar"));
+                //IDBKeyRange.bound(["aaa", "111"],["zzz", "999"], false, false);
+                alert("all good: " + result);
+            } catch (err) {
+                alert(`IDBKeyRange.bound: ${err.message}`);
+            }
+        }
+
+        main();
+
+    </script>
+</body>
+</html>
+ 
--- a/rollup.config.js
+++ b/rollup.config.js
@ -0,0 +1,8 @@
+export default {
+  input: 'src/main.js',
+  output: {
+    file: 'bundle.js',
+    format: 'iife',
+    name: 'main'
+  }
+};
--- a/src/Platform.js
+++ b/src/Platform.js
@ -0,0 +1,5 @@
+// #ifdef PLATFORM_GNOME
+// export {default} from "./ui/gnome/GnomePlatform.js";
+// #else
+export {default} from "./ui/web/WebPlatform.js";
+// #endif
--- a/src/main.js
+++ b/src/main.js
@ -5,10 +5,10 @@ import Sync from "./matrix/sync.js";
 import SessionView from "./ui/web/session/SessionView.js";
 import SessionViewModel from "./domain/session/SessionViewModel.js";

-const HOST = "localhost";
+const HOST = "192.168.2.108";
 const HOMESERVER = `http://${HOST}:8008`;
 const USERNAME = "bruno1";
-const USER_ID = `@${USERNAME}:${HOST}`;
+const USER_ID = `@${USERNAME}:localhost`;
 const PASSWORD = "testtest";

 function getSessionInfo(userId) {
@ -50,7 +50,6 @@ function showSession(container, session, sync) {
    container.appendChild(view.mount());
 }

-// eslint-disable-next-line no-unused-vars
 export default async function main(container) {
 	try {
 		let sessionInfo = getSessionInfo(USER_ID);
--- a/src/matrix/error.js
+++ b/src/matrix/error.js
@ -5,9 +5,6 @@ export class HomeServerError extends Error {
 	}
 }

-export class StorageError extends Error {
-}
-
 export class RequestAbortError extends Error {
 }

--- a/src/matrix/hs-api.js
+++ b/src/matrix/hs-api.js
@ -6,8 +6,21 @@ import {

 class RequestWrapper {
 	constructor(promise, controller) {
-		this._promise = promise;
-		this._controller = controller;
+        if (!controller) {
+            const abortPromise = new Promise((_, reject) => {
+                this._controller = {
+                    abort() {
+                        const err = new Error("fetch request aborted");
+                        err.name = "AbortError";
+                        reject(err);
+                    }
+                };
+            });
+            this._promise = Promise.race([promise, abortPromise]);
+        } else {
+            this._promise = promise;
+            this._controller = controller;
+        }
 	}

 	abort() {
@ -47,13 +60,13 @@ export default class HomeServerApi {
 			headers.append("Content-Type", "application/json");
 			bodyString = JSON.stringify(body);
 		}
-		const controller = new AbortController();
+		const controller = typeof AbortController === "function" ? new AbortController() : null;
 		// TODO: set authenticated headers with second arguments, cache them
 		let promise = fetch(url, {
 			method,
 			headers,
 			body: bodyString,
-			signal: controller.signal
+			signal: controller && controller.signal
 		});
 		promise = promise.then(async (response) => {
 			if (response.ok) {
--- a/src/matrix/room/timeline/EventKey.js
+++ b/src/matrix/room/timeline/EventKey.js
@ -1,7 +1,4 @@
-const DEFAULT_LIVE_FRAGMENT_ID = 0;
-const MIN_EVENT_INDEX = Number.MIN_SAFE_INTEGER + 1;
-const MAX_EVENT_INDEX = Number.MAX_SAFE_INTEGER - 1;
-const MID_EVENT_INDEX = 0;
+import Platform from "../../../Platform.js";

 // key for events in the timelineEvents store
 export default class EventKey {
@ -12,7 +9,7 @@ export default class EventKey {

    nextFragmentKey() {
        // could take MIN_EVENT_INDEX here if it can't be paged back
-        return new EventKey(this.fragmentId + 1, MID_EVENT_INDEX);
+        return new EventKey(this.fragmentId + 1, Platform.middleStorageKey);
    }

    nextKeyForDirection(direction) {
@ -32,15 +29,15 @@ export default class EventKey {
    }

    static get maxKey() {
-        return new EventKey(Number.MAX_SAFE_INTEGER, Number.MAX_SAFE_INTEGER);
+        return new EventKey(Platform.maxStorageKey, Platform.maxStorageKey);
    }

    static get minKey() {
-        return new EventKey(Number.MIN_SAFE_INTEGER, Number.MIN_SAFE_INTEGER);
+        return new EventKey(Platform.minStorageKey, Platform.minStorageKey);
    }

    static get defaultLiveKey() {
-        return new EventKey(DEFAULT_LIVE_FRAGMENT_ID, MID_EVENT_INDEX);
+        return new EventKey(Platform.minStorageKey, Platform.middleStorageKey);
    }

    toString() {
--- a/src/matrix/room/timeline/entries/FragmentBoundaryEntry.js
+++ b/src/matrix/room/timeline/entries/FragmentBoundaryEntry.js
@ -1,6 +1,7 @@
 import BaseEntry from "./BaseEntry.js";
 import Direction from "../Direction.js";
 import {isValidFragmentId} from "../common.js";
+import Platform from "../../../../Platform.js";

 export default class FragmentBoundaryEntry extends BaseEntry {
    constructor(fragment, isFragmentStart, fragmentIdComparer) {
@ -36,9 +37,9 @@ export default class FragmentBoundaryEntry extends BaseEntry {

    get entryIndex() {
        if (this.started) {
-            return Number.MIN_SAFE_INTEGER;
+            return Platform.minStorageKey;
        } else {
-            return Number.MAX_SAFE_INTEGER;
+            return Platform.maxStorageKey;
        }
    }

--- a/src/matrix/room/timeline/persistence/TimelineReader.js
+++ b/src/matrix/room/timeline/persistence/TimelineReader.js
@ -1,5 +1,4 @@
 import {directionalConcat, directionalAppend} from "./common.js";
-import EventKey from "../EventKey.js";
 import Direction from "../Direction.js";
 import EventEntry from "../entries/EventEntry.js";
 import FragmentBoundaryEntry from "../entries/FragmentBoundaryEntry.js";
--- a/src/matrix/storage/common.js
+++ b/src/matrix/storage/common.js
@ -4,3 +4,17 @@ export const STORE_MAP = Object.freeze(STORE_NAMES.reduce((nameMap, name) => {
    nameMap[name] = name;
    return nameMap;
 }, {}));
+
+export class StorageError extends Error {
+    constructor(message, cause) {
+        let fullMessage = message;
+        if (cause) {
+            fullMessage += ": ";
+            if (cause.name) {
+                fullMessage += `(${cause.name}) `;
+            }
+            fullMessage += cause.message;
+        }
+        super(fullMessage);
+    }
+}
--- a/src/matrix/storage/idb/create.js
+++ b/src/matrix/storage/idb/create.js
@ -12,18 +12,14 @@ function createStores(db) {
    db.createObjectStore("roomSummary", {keyPath: "roomId"});

    // need index to find live fragment? prooobably ok without for now
-    db.createObjectStore("timelineFragments", {keyPath: ["roomId", "id"]});
-    const timelineEvents = db.createObjectStore("timelineEvents", {keyPath: ["roomId", "fragmentId", "eventIndex"]});
-    timelineEvents.createIndex("byEventId", [
-        "roomId",
-        "event.event_id"
-    ], {unique: true});
-
-    db.createObjectStore("roomState", {keyPath: [
-        "roomId",
-        "event.type",
-        "event.state_key"
-    ]});
+    //key = room_id | fragment_id
+    db.createObjectStore("timelineFragments", {keyPath: "key"});
+    //key = room_id | fragment_id | event_index
+    const timelineEvents = db.createObjectStore("timelineEvents", {keyPath: "key"});
+    //eventIdKey = room_id | event_id
+    timelineEvents.createIndex("byEventId", "eventIdKey", {unique: true});
+    //key = room_id | event.type | event.state_key,
+    db.createObjectStore("roomState", {keyPath: "key"});
    
    // const roomMembers = db.createObjectStore("roomMembers", {keyPath: [
    //  "event.room_id",
--- a/src/matrix/storage/idb/query-target.js
+++ b/src/matrix/storage/idb/query-target.js
@ -5,6 +5,18 @@ export default class QueryTarget {
 		this._target = target;
 	}

+    _openCursor(range, direction) {
+        if (range && direction) {
+            return this._target.openCursor(range, direction);
+        } else if (range) {
+            return this._target.openCursor(range);
+        } else if (direction) {
+            return this._target.openCursor(null, direction);
+        } else {
+            return this._target.openCursor();
+        }
+    }
+
    get(key) {
        return reqAsPromise(this._target.get(key));
    }
@ -34,7 +46,7 @@ export default class QueryTarget {
 	}

 	async selectAll(range, direction) {
-		const cursor = this._target.openCursor(range, direction);
+		const cursor = this._openCursor(range, direction);
 		const results = [];
 		await iterateCursor(cursor, (value) => {
 			results.push(value);
@ -97,7 +109,7 @@ export default class QueryTarget {

 	_reduce(range, reducer, initialValue, direction) {
 		let reducedValue = initialValue;
-		const cursor = this._target.openCursor(range, direction);
+		const cursor = this._openCursor(range, direction);
 		return iterateCursor(cursor, (value) => {
 			reducedValue = reducer(reducedValue, value);
 			return {done: false};
@ -111,7 +123,7 @@ export default class QueryTarget {
 	}

 	async _selectWhile(range, predicate, direction) {
-		const cursor = this._target.openCursor(range, direction);
+		const cursor = this._openCursor(range, direction);
 		const results = [];
 		await iterateCursor(cursor, (value) => {
 			results.push(value);
@ -121,7 +133,7 @@ export default class QueryTarget {
 	}

 	async _find(range, predicate, direction) {
-		const cursor = this._target.openCursor(range, direction);
+		const cursor = this._openCursor(range, direction);
 		let result;
 		const found = await iterateCursor(cursor, (value) => {
 			const found = predicate(value);
--- a/src/matrix/storage/idb/storage.js
+++ b/src/matrix/storage/idb/storage.js
@ -1,5 +1,5 @@
 import Transaction from "./transaction.js";
-import { STORE_NAMES } from "../common.js";
+import { STORE_NAMES, StorageError } from "../common.js";

 export default class Storage {
 	constructor(idbDatabase) {
@ -14,19 +14,27 @@ export default class Storage {
 	_validateStoreNames(storeNames) {
 		const idx = storeNames.findIndex(name => !STORE_NAMES.includes(name));
 		if (idx !== -1) {
-			throw new Error(`Tried to open a transaction for unknown store ${storeNames[idx]}`);
+			throw new StorageError(`Tried top, a transaction unknown store ${storeNames[idx]}`);
 		}
 	}

 	async readTxn(storeNames) {
 		this._validateStoreNames(storeNames);
-		const txn = this._db.transaction(storeNames, "readonly");
-		return new Transaction(txn, storeNames);
+		try {
+			const txn = this._db.transaction(storeNames, "readonly");
+			return new Transaction(txn, storeNames);
+		} catch(err) {
+			throw new StorageError("readTxn failed", err);
+		}
 	}

 	async readWriteTxn(storeNames) {
 		this._validateStoreNames(storeNames);
-		const txn = this._db.transaction(storeNames, "readwrite");
-		return new Transaction(txn, storeNames);
+		try {
+			const txn = this._db.transaction(storeNames, "readwrite");
+			return new Transaction(txn, storeNames);
+		} catch(err) {
+			throw new StorageError("readWriteTxn failed", err);
+		}
 	}
 }
--- a/src/matrix/storage/idb/store.js
+++ b/src/matrix/storage/idb/store.js
@ -1,9 +1,64 @@
 import QueryTarget from "./query-target.js";
 import { reqAsPromise } from "./utils.js";
+import { StorageError } from "../common.js";
+
+class QueryTargetWrapper {
+    constructor(qt) {
+        this._qt = qt;
+    }
+    
+    openKeyCursor(...params) {
+        try {
+            return this._qt.openKeyCursor(...params);
+        } catch(err) {
+            throw new StorageError("openKeyCursor failed", err);
+        }
+    }
+    
+    openCursor(...params) {
+        try {
+            return this._qt.openCursor(...params);
+        } catch(err) {
+            throw new StorageError("openCursor failed", err);
+        }
+    }
+
+    put(...params) {
+        try {
+            return this._qt.put(...params);
+        } catch(err) {
+            throw new StorageError("put failed", err);
+        }
+    }
+
+    add(...params) {
+        try {
+            return this._qt.add(...params);
+        } catch(err) {
+            throw new StorageError("add failed", err);
+        }
+    }
+
+    get(...params) {
+        try {
+            return this._qt.get(...params);
+        } catch(err) {
+            throw new StorageError("get failed", err);
+        }
+    }
+
+    index(...params) {
+        try {
+            return this._qt.index(...params);
+        } catch(err) {
+            throw new StorageError("index failed", err);
+        }
+    }
+}

 export default class Store extends QueryTarget {
 	constructor(idbStore) {
-		super(idbStore);
+		super(new QueryTargetWrapper(idbStore));
 	}

 	get _idbStore() {
@ -11,7 +66,7 @@ export default class Store extends QueryTarget {
 	}

 	index(indexName) {
-		return new QueryTarget(this._idbStore.index(indexName));
+		return new QueryTarget(new QueryTargetWrapper(this._idbStore.index(indexName)));
 	}

 	put(value) {
@ -21,4 +76,4 @@ export default class Store extends QueryTarget {
 	add(value) {
 		return reqAsPromise(this._idbStore.add(value));
 	}
-}
+}
--- a/src/matrix/storage/idb/stores/RoomStateStore.js
+++ b/src/matrix/storage/idb/stores/RoomStateStore.js
@ -12,6 +12,8 @@ export default class RoomStateStore {
 	}

 	async setStateEvent(roomId, event) {
-		return this._roomStateStore.put({roomId, event});
+        const key = `${roomId}|${event.type}|${event.state_key}`;
+        const entry = {roomId, event, key};
+		return this._roomStateStore.put(entry);
 	}
-}
+}
--- a/src/matrix/storage/idb/stores/TimelineEventStore.js
+++ b/src/matrix/storage/idb/stores/TimelineEventStore.js
@ -1,4 +1,25 @@
 import EventKey from "../../../room/timeline/EventKey.js";
+import { StorageError } from "../../common.js";
+import Platform from "../../../../Platform.js";
+
+// storage keys are defined to be unsigned 32bit numbers in WebPlatform.js, which is assumed by idb
+function encodeUint32(n) {
+    const hex = n.toString(16);
+    return "0".repeat(8 - hex.length) + hex;
+}
+
+function encodeKey(roomId, fragmentId, eventIndex) {
+    return `${roomId}|${encodeUint32(fragmentId)}|${encodeUint32(eventIndex)}`;
+}
+
+function encodeEventIdKey(roomId, eventId) {
+    return `${roomId}|${eventId}`;
+}
+
+function decodeEventIdKey(eventIdKey) {
+    const [roomId, eventId] = eventIdKey.split("|");
+    return {roomId, eventId};
+}

 class Range {
    constructor(only, lower, upper, lowerOpen, upperOpen) {
@ -10,38 +31,42 @@ class Range {
    }

    asIDBKeyRange(roomId) {
-        // only
-        if (this._only) {
-            return IDBKeyRange.only([roomId, this._only.fragmentId, this._only.eventIndex]);
-        }
-        // lowerBound
-        // also bound as we don't want to move into another roomId
-        if (this._lower && !this._upper) {
-            return IDBKeyRange.bound(
-                [roomId, this._lower.fragmentId, this._lower.eventIndex],
-                [roomId, this._lower.fragmentId, EventKey.maxKey.eventIndex],
-                this._lowerOpen,
-                false
-            );
-        }
-        // upperBound
-        // also bound as we don't want to move into another roomId
-        if (!this._lower && this._upper) {
-            return IDBKeyRange.bound(
-                [roomId, this._upper.fragmentId, EventKey.minKey.eventIndex],
-                [roomId, this._upper.fragmentId, this._upper.eventIndex],
-                false,
-                this._upperOpen
-            );
-        }
-        // bound
-        if (this._lower && this._upper) {
-            return IDBKeyRange.bound(
-                [roomId, this._lower.fragmentId, this._lower.eventIndex],
-                [roomId, this._upper.fragmentId, this._upper.eventIndex],
-                this._lowerOpen,
-                this._upperOpen
-            );
+        try {
+            // only
+            if (this._only) {
+                return IDBKeyRange.only(encodeKey(roomId, this._only.fragmentId, this._only.eventIndex));
+            }
+            // lowerBound
+            // also bound as we don't want to move into another roomId
+            if (this._lower && !this._upper) {
+                return IDBKeyRange.bound(
+                    encodeKey(roomId, this._lower.fragmentId, this._lower.eventIndex),
+                    encodeKey(roomId, this._lower.fragmentId, Platform.maxStorageKey),
+                    this._lowerOpen,
+                    false
+                );
+            }
+            // upperBound
+            // also bound as we don't want to move into another roomId
+            if (!this._lower && this._upper) {
+                return IDBKeyRange.bound(
+                    encodeKey(roomId, this._upper.fragmentId, Platform.minStorageKey),
+                    encodeKey(roomId, this._upper.fragmentId, this._upper.eventIndex),
+                    false,
+                    this._upperOpen
+                );
+            }
+            // bound
+            if (this._lower && this._upper) {
+                return IDBKeyRange.bound(
+                    encodeKey(roomId, this._lower.fragmentId, this._lower.eventIndex),
+                    encodeKey(roomId, this._upper.fragmentId, this._upper.eventIndex),
+                    this._lowerOpen,
+                    this._upperOpen
+                );
+            }
+        } catch(err) {
+            throw new StorageError(`IDBKeyRange failed with data: ` + JSON.stringify(this), err);
        }
    }
 }
@ -169,7 +194,7 @@ export default class TimelineEventStore {
    // also passing them in chronological order makes sense as that's how we'll receive them almost always.
    async findFirstOccurringEventId(roomId, eventIds) {
        const byEventId = this._timelineStore.index("byEventId");
-        const keys = eventIds.map(eventId => [roomId, eventId]);
+        const keys = eventIds.map(eventId => encodeEventIdKey(roomId, eventId));
        const results = new Array(keys.length);
        let firstFoundKey;

@ -190,8 +215,7 @@ export default class TimelineEventStore {
            firstFoundKey = firstFoundAndPrecedingResolved();
            return !!firstFoundKey;
        });
-        // key of index is [roomId, eventId], so pick out eventId
-        return firstFoundKey && firstFoundKey[1];
+        return firstFoundKey && decodeEventIdKey(firstFoundKey).eventId;
    }

    /** Inserts a new entry into the store. The combination of roomId and eventKey should not exist yet, or an error is thrown.
@ -200,6 +224,8 @@ export default class TimelineEventStore {
     *  @throws {StorageError} ...
     */
    insert(entry) {
+        entry.key = encodeKey(entry.roomId, entry.fragmentId, entry.eventIndex);
+        entry.eventIdKey = encodeEventIdKey(entry.roomId, entry.event.event_id);
        // TODO: map error? or in idb/store?
        return this._timelineStore.add(entry);
    }
@ -214,7 +240,7 @@ export default class TimelineEventStore {
    }

    get(roomId, eventKey) {
-        return this._timelineStore.get([roomId, eventKey.fragmentId, eventKey.eventIndex]);
+        return this._timelineStore.get(encodeKey(roomId, eventKey.fragmentId, eventKey.eventIndex));
    }
    // returns the entries as well!! (or not always needed? I guess not always needed, so extra method)
    removeRange(roomId, range) {
@ -223,6 +249,6 @@ export default class TimelineEventStore {
    }

    getByEventId(roomId, eventId) {
-        return this._timelineStore.index("byEventId").get([roomId, eventId]);
+        return this._timelineStore.index("byEventId").get(encodeEventIdKey(roomId, eventId));
    }
 }
--- a/src/matrix/storage/idb/stores/TimelineFragmentStore.js
+++ b/src/matrix/storage/idb/stores/TimelineFragmentStore.js
@ -1,13 +1,26 @@
+import { StorageError } from "../../common.js";
+import Platform from "../../../../Platform.js";
+
+function encodeKey(roomId, fragmentId) {
+    let fragmentIdHex = fragmentId.toString(16);
+    fragmentIdHex = "0".repeat(8 - fragmentIdHex.length) + fragmentIdHex;
+    return `${roomId}|${fragmentIdHex}`;
+}
+
 export default class RoomFragmentStore {
    constructor(store) {
        this._store = store;
    }

    _allRange(roomId) {
-        return IDBKeyRange.bound(
-            [roomId, Number.MIN_SAFE_INTEGER],
-            [roomId, Number.MAX_SAFE_INTEGER]
-        );
+        try {
+            return IDBKeyRange.bound(
+                encodeKey(roomId, Platform.minStorageKey),
+                encodeKey(roomId, Platform.maxStorageKey)
+            );
+        } catch (err) {
+            throw new StorageError(`error from IDBKeyRange with roomId ${roomId}`, err);
+        }
    }

    all(roomId) {
@ -33,6 +46,7 @@ export default class RoomFragmentStore {
    // depends if we want to do anything smart with fragment ids,
    // like give them meaning depending on range. not for now probably ...
    add(fragment) {
+        fragment.key = encodeKey(fragment.roomId, fragment.id);
        return this._store.add(fragment);
    }

@ -41,6 +55,6 @@ export default class RoomFragmentStore {
    }

    get(roomId, fragmentId) {
-        return this._store.get([roomId, fragmentId]);
+        return this._store.get(encodeKey(roomId, fragmentId));
    }
 }
--- a/src/matrix/storage/idb/transaction.js
+++ b/src/matrix/storage/idb/transaction.js
@ -1,4 +1,5 @@
 import {txnAsPromise} from "./utils.js";
+import {StorageError} from "../common.js";
 import Store from "./store.js";
 import SessionStore from "./stores/SessionStore.js";
 import RoomSummaryStore from "./stores/RoomSummaryStore.js";
@ -21,7 +22,7 @@ export default class Transaction {
 	_idbStore(name) {
 		if (!this._allowedStoreNames.includes(name)) {
 			// more specific error? this is a bug, so maybe not ...
-			throw new Error(`Invalid store for transaction: ${name}, only ${this._allowedStoreNames.join(", ")} are allowed.`);
+			throw new StorageError(`Invalid store for transaction: ${name}, only ${this._allowedStoreNames.join(", ")} are allowed.`);
 		}
 		return new Store(this._txn.objectStore(name));
 	}
--- a/src/matrix/storage/idb/utils.js
+++ b/src/matrix/storage/idb/utils.js
@ -1,3 +1,5 @@
+import { StorageError } from "../common.js";
+
 export function openDatabase(name, createObjectStore, version) {
    const req = window.indexedDB.open(name, version);
    req.onupgradeneeded = (ev) => {
@ -8,17 +10,21 @@ export function openDatabase(name, createObjectStore, version) {
    return reqAsPromise(req);
 }

+function wrapError(err) {
+    return new StorageError(`wrapped DOMException`, err);
+}
+
 export function reqAsPromise(req) {
    return new Promise((resolve, reject) => {
        req.addEventListener("success", event => resolve(event.target.result));
-        req.addEventListener("error", event => reject(event.target.error));
+        req.addEventListener("error", event => reject(wrapError(event.target.error)));
    });
 }

 export function txnAsPromise(txn) {
    return new Promise((resolve, reject) => {
        txn.addEventListener("complete", resolve);
-        txn.addEventListener("abort", reject);
+        txn.addEventListener("abort", e => reject(wrapError(e)));
    });
 }

@ -38,10 +44,14 @@ export function iterateCursor(cursor, processValue) {
            const {done, jumpTo} = processValue(cursor.value, cursor.key);
            if (done) {
                resolve(true);
-            } else {
+            } else if(jumpTo) {
                cursor.continue(jumpTo);
+            } else {
+                cursor.continue();
            }
        };
+    }).catch(err => {
+        throw new StorageError("iterateCursor failed", err);
    });
 }

@ -97,7 +107,7 @@ export async function findStoreValue(db, storeName, toCursor, matchesValue) {
        }
    });
    if (!matched) {
-        throw new Error("Value not found");
+        throw new StorageError("Value not found");
    }
    return match;
 }
--- a/src/matrix/sync.js
+++ b/src/matrix/sync.js
@ -1,8 +1,4 @@
-import {
-    RequestAbortError,
-    HomeServerError,
-    StorageError
-} from "./error.js";
+import {RequestAbortError} from "./error.js";
 import EventEmitter from "../EventEmitter.js";

 const INCREMENTAL_TIMEOUT = 30000;
@ -111,7 +107,8 @@ export default class Sync extends EventEmitter {
            await syncTxn.complete();
            console.info("syncTxn committed!!");
        } catch (err) {
-            throw new StorageError("unable to commit sync tranaction", err);
+            console.error("unable to commit sync tranaction", err.message);
+            throw err;
        }
        // emit room related events after txn has been closed
        for(let {room, changes} of roomChanges) {
--- a/src/ui/web/WebPlatform.js
+++ b/src/ui/web/WebPlatform.js
@ -0,0 +1,16 @@
+export default {
+	get minStorageKey() {
+		// for indexeddb, we use unsigned 32 bit integers as keys
+		return 0;
+	},
+	
+	get middleStorageKey() {
+		// for indexeddb, we use unsigned 32 bit integers as keys
+		return 0x7FFFFFFF;
+	},
+
+	get maxStorageKey() {
+		// for indexeddb, we use unsigned 32 bit integers as keys
+		return 0xFFFFFFFF;
+	},
+}
--- a/src/ui/web/session/SyncStatusBar.js
+++ b/src/ui/web/session/SyncStatusBar.js
@ -11,7 +11,8 @@ export default class SyncStatusBar extends TemplateView {
            "SyncStatusBar_shown": true,
        }}, [
            vm => vm.status,
-            t.if(vm => !vm.isSyncing, t => t.button({onClick: () => vm.trySync()}, "Try syncing"))
+            t.if(vm => !vm.isSyncing, t => t.button({onClick: () => vm.trySync()}, "Try syncing")),
+            window.DEBUG ? t.button({id: "showlogs"}, "Show logs") : ""
        ]);
    }
 }
--- a/yarn.lock
+++ b/yarn.lock
@ -0,0 +1,197 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+"@types/estree@0.0.39":
+  version "0.0.39"
+  resolved "https://registry.yarnpkg.com/@types/estree/-/estree-0.0.39.tgz#e177e699ee1b8c22d23174caaa7422644389509f"
+  integrity sha512-EYNwp3bU+98cpU4lAWYYL7Zz+2gryWH1qbdDTidVd6hkiR6weksdbMadyXKXNPEkQFhXM+hVO9ZygomHXp+AIw==
+
+"@types/node@^12.0.8":
+  version "12.0.8"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-12.0.8.tgz#551466be11b2adc3f3d47156758f610bd9f6b1d8"
+  integrity sha512-b8bbUOTwzIY3V5vDTY1fIJ+ePKDUBqt2hC2woVGotdQQhG/2Sh62HOKHrT7ab+VerXAcPyAiTEipPu/FsreUtg==
+
+acorn@^6.1.1:
+  version "6.1.1"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.1.1.tgz#7d25ae05bb8ad1f9b699108e1094ecd7884adc1f"
+  integrity sha512-jPTiwtOxaHNaAPg/dmrJ/beuzLRnXtB0kQPQ8JpotKJgTB6rX6c8mlf315941pyjBSaPg8NHXS9fhP4u17DpGA==
+
+colors@^1.3.3:
+  version "1.3.3"
+  resolved "https://registry.yarnpkg.com/colors/-/colors-1.3.3.tgz#39e005d546afe01e01f9c4ca8fa50f686a01205d"
+  integrity sha512-mmGt/1pZqYRjMxB1axhTo16/snVZ5krrKkcmMeVKxzECMMXoCgnvTPp10QgHfcbQZw8Dq2jMNG6je4JlWU0gWg==
+
+commander@^2.19.0:
+  version "2.20.0"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.20.0.tgz#d58bb2b5c1ee8f87b0d340027e9e94e222c5a422"
+  integrity sha512-7j2y+40w61zy6YC2iRNpUe/NwhNyoXrYpHMrSunaMG64nRnaf96zO/KMQR4OyN/UnE5KLyEBnKHd4aG3rskjpQ==
+
+debug@2.6.9:
+  version "2.6.9"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
+  integrity sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==
+  dependencies:
+    ms "2.0.0"
+
+depd@~1.1.2:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/depd/-/depd-1.1.2.tgz#9bcd52e14c097763e749b274c4346ed2e560b5a9"
+  integrity sha1-m81S4UwJd2PnSbJ0xDRu0uVgtak=
+
+destroy@~1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/destroy/-/destroy-1.0.4.tgz#978857442c44749e4206613e37946205826abd80"
+  integrity sha1-l4hXRCxEdJ5CBmE+N5RiBYJqvYA=
+
+ee-first@1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/ee-first/-/ee-first-1.1.1.tgz#590c61156b0ae2f4f0255732a158b266bc56b21d"
+  integrity sha1-WQxhFWsK4vTwJVcyoViyZrxWsh0=
+
+encodeurl@~1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/encodeurl/-/encodeurl-1.0.2.tgz#ad3ff4c86ec2d029322f5a02c3a9a606c95b3f59"
+  integrity sha1-rT/0yG7C0CkyL1oCw6mmBslbP1k=
+
+escape-html@~1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/escape-html/-/escape-html-1.0.3.tgz#0258eae4d3d0c0974de1c169188ef0051d1d1988"
+  integrity sha1-Aljq5NPQwJdN4cFpGI7wBR0dGYg=
+
+etag@~1.8.1:
+  version "1.8.1"
+  resolved "https://registry.yarnpkg.com/etag/-/etag-1.8.1.tgz#41ae2eeb65efa62268aebfea83ac7d79299b0887"
+  integrity sha1-Qa4u62XvpiJorr/qg6x9eSmbCIc=
+
+finalhandler@^1.1.1:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/finalhandler/-/finalhandler-1.1.2.tgz#b7e7d000ffd11938d0fdb053506f6ebabe9f587d"
+  integrity sha512-aAWcW57uxVNrQZqFXjITpW3sIUQmHGG3qSb9mUah9MgMC4NeWhNOlNjXEYq3HjRAvL6arUviZGGJsBg6z0zsWA==
+  dependencies:
+    debug "2.6.9"
+    encodeurl "~1.0.2"
+    escape-html "~1.0.3"
+    on-finished "~2.3.0"
+    parseurl "~1.3.3"
+    statuses "~1.5.0"
+    unpipe "~1.0.0"
+
+fresh@0.5.2:
+  version "0.5.2"
+  resolved "https://registry.yarnpkg.com/fresh/-/fresh-0.5.2.tgz#3d8cadd90d976569fa835ab1f8e4b23a105605a7"
+  integrity sha1-PYyt2Q2XZWn6g1qx+OSyOhBWBac=
+
+http-errors@~1.7.2:
+  version "1.7.2"
+  resolved "https://registry.yarnpkg.com/http-errors/-/http-errors-1.7.2.tgz#4f5029cf13239f31036e5b2e55292bcfbcc85c8f"
+  integrity sha512-uUQBt3H/cSIVfch6i1EuPNy/YsRSOUBXTVfZ+yR7Zjez3qjBz6i9+i4zjNaoqcoFVI4lQJ5plg63TvGfRSDCRg==
+  dependencies:
+    depd "~1.1.2"
+    inherits "2.0.3"
+    setprototypeof "1.1.1"
+    statuses ">= 1.5.0 < 2"
+    toidentifier "1.0.0"
+
+impunity@^0.0.7:
+  version "0.0.7"
+  resolved "https://registry.yarnpkg.com/impunity/-/impunity-0.0.7.tgz#15b8aaafcc98dcf3a4b5bcfa0beea4eea63d760f"
+  integrity sha512-+DhzXSWrzqI1KNroKt3y1LkLTn/aoJpt4DzxWN+hair+Jfb+iJAbTEsSFkYUG7kASP9TF9GvI0hIBUul6PjpKg==
+  dependencies:
+    colors "^1.3.3"
+    commander "^2.19.0"
+
+inherits@2.0.3:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.3.tgz#633c2c83e3da42a502f52466022480f4208261de"
+  integrity sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=
+
+mime@1.6.0:
+  version "1.6.0"
+  resolved "https://registry.yarnpkg.com/mime/-/mime-1.6.0.tgz#32cd9e5c64553bd58d19a568af452acff04981b1"
+  integrity sha512-x0Vn8spI+wuJ1O6S7gnbaQg8Pxh4NNHb7KSINmEWKiPE4RKOplvijn+NkmYmmRgP68mc70j2EbeTFRsrswaQeg==
+
+ms@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
+  integrity sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=
+
+ms@2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.1.tgz#30a5864eb3ebb0a66f2ebe6d727af06a09d86e0a"
+  integrity sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==
+
+on-finished@~2.3.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/on-finished/-/on-finished-2.3.0.tgz#20f1336481b083cd75337992a16971aa2d906947"
+  integrity sha1-IPEzZIGwg811M3mSoWlxqi2QaUc=
+  dependencies:
+    ee-first "1.1.1"
+
+parseurl@~1.3.3:
+  version "1.3.3"
+  resolved "https://registry.yarnpkg.com/parseurl/-/parseurl-1.3.3.tgz#9da19e7bee8d12dff0513ed5b76957793bc2e8d4"
+  integrity sha512-CiyeOxFT/JZyN5m0z9PfXw4SCBJ6Sygz1Dpl0wqjlhDEGGBP1GnsUVEL0p63hoG1fcj3fHynXi9NYO4nWOL+qQ==
+
+range-parser@~1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/range-parser/-/range-parser-1.2.1.tgz#3cf37023d199e1c24d1a55b84800c2f3e6468031"
+  integrity sha512-Hrgsx+orqoygnmhFbKaHE6c296J+HTAQXoxEF6gNupROmmGJRoyzfG3ccAveqCBrwr/2yxQ5BVd/GTl5agOwSg==
+
+rollup@^1.15.6:
+  version "1.15.6"
+  resolved "https://registry.yarnpkg.com/rollup/-/rollup-1.15.6.tgz#caf0ed28d2d78e3a59c1398e5a3695fb600a0ef0"
+  integrity sha512-s3Vn3QJQ5YVFfIG4nXoG9VdL1I37IZsft+4ZyeBhxE0df1kCFz9e+4bEAbR4mKH3pvBO9e9xjdxWPhhIp0r9ow==
+  dependencies:
+    "@types/estree" "0.0.39"
+    "@types/node" "^12.0.8"
+    acorn "^6.1.1"
+
+send@0.17.1:
+  version "0.17.1"
+  resolved "https://registry.yarnpkg.com/send/-/send-0.17.1.tgz#c1d8b059f7900f7466dd4938bdc44e11ddb376c8"
+  integrity sha512-BsVKsiGcQMFwT8UxypobUKyv7irCNRHk1T0G680vk88yf6LBByGcZJOTJCrTP2xVN6yI+XjPJcNuE3V4fT9sAg==
+  dependencies:
+    debug "2.6.9"
+    depd "~1.1.2"
+    destroy "~1.0.4"
+    encodeurl "~1.0.2"
+    escape-html "~1.0.3"
+    etag "~1.8.1"
+    fresh "0.5.2"
+    http-errors "~1.7.2"
+    mime "1.6.0"
+    ms "2.1.1"
+    on-finished "~2.3.0"
+    range-parser "~1.2.1"
+    statuses "~1.5.0"
+
+serve-static@^1.13.2:
+  version "1.14.1"
+  resolved "https://registry.yarnpkg.com/serve-static/-/serve-static-1.14.1.tgz#666e636dc4f010f7ef29970a88a674320898b2f9"
+  integrity sha512-JMrvUwE54emCYWlTI+hGrGv5I8dEwmco/00EvkzIIsR7MqrHonbD9pO2MOfFnpFntl7ecpZs+3mW+XbQZu9QCg==
+  dependencies:
+    encodeurl "~1.0.2"
+    escape-html "~1.0.3"
+    parseurl "~1.3.3"
+    send "0.17.1"
+
+setprototypeof@1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/setprototypeof/-/setprototypeof-1.1.1.tgz#7e95acb24aa92f5885e0abef5ba131330d4ae683"
+  integrity sha512-JvdAWfbXeIGaZ9cILp38HntZSFSo3mWg6xGcJJsd+d4aRMOqauag1C63dJfDw7OaMYwEbHMOxEZ1lqVRYP2OAw==
+
+"statuses@>= 1.5.0 < 2", statuses@~1.5.0:
+  version "1.5.0"
+  resolved "https://registry.yarnpkg.com/statuses/-/statuses-1.5.0.tgz#161c7dac177659fd9811f43771fa99381478628c"
+  integrity sha1-Fhx9rBd2Wf2YEfQ3cfqZOBR4Yow=
+
+toidentifier@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/toidentifier/-/toidentifier-1.0.0.tgz#7e1be3470f1e77948bc43d94a3c8f4d7752ba553"
+  integrity sha512-yaOH/Pk/VEhBWWTlhI+qXxDFXlejDGcQipMlyxda9nthulaxLZUNcUqFxokp0vcYnvteJln5FNQDRrxj3YcbVw==
+
+unpipe@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/unpipe/-/unpipe-1.0.0.tgz#b2bf4ee8514aae6165b4817829d21b2ef49904ec"
+  integrity sha1-sr9O6FFKrmFltIF4KdIbLvSZBOw=