Include more context in indexedDB error messages

Author: GarboMuffin

src/lib/tw-local-backpack-api.js

@@ -94,7 +94,7 @@ const getBackpackContents = async ({
     return new Promise((resolve, reject) => {
         const transaction = db.transaction(STORE_NAME, 'readonly');
         transaction.onerror = event => {
-            reject(new Error(`Transaction error: ${event.target.error}`));
+            reject(new Error(`Getting contents: ${event.target.error}`));
         };
         const store = transaction.objectStore(STORE_NAME);
         const items = [];
@@ -133,7 +133,7 @@ const saveBackpackObject = async ({
     return new Promise((resolve, reject) => {
         const transaction = db.transaction(STORE_NAME, 'readwrite');
         transaction.onerror = event => {
-            reject(new Error(`Transaction error: ${event.target.error}`));
+            reject(new Error(`Sving object: ${event.target.error}`));
         };
         const store = transaction.objectStore(STORE_NAME);
         const bodyData = base64ToArrayBuffer(body);
@@ -162,7 +162,7 @@ const deleteBackpackObject = async ({
     return new Promise((resolve, reject) => {
         const transaction = db.transaction(STORE_NAME, 'readwrite');
         transaction.onerror = event => {
-            reject(new Error(`Transaction error: ${event.target.error}`));
+            reject(new Error(`Deleting object: ${event.target.error}`));
         };
         const store = transaction.objectStore(STORE_NAME);
         // Convert string IDs to number IDs
@@ -182,7 +182,7 @@ const updateBackpackObject = async ({
     return new Promise((resolve, reject) => {
         const transaction = db.transaction(STORE_NAME, 'readwrite');
         transaction.onerror = event => {
-            reject(new Error(`Transaction error: ${event.target.error}`));
+            reject(new Error(`Updating object: ${event.target.error}`));
         };
         const store = transaction.objectStore(STORE_NAME);
         const getRequest = store.get(id);

src/lib/tw-restore-point-api.js

@@ -161,7 +161,7 @@ const removeExtraneousData = transaction => new Promise(resolve => {
 const removeExtraneousRestorePoints = () => openDB().then(db => new Promise((resolveTransaction, rejectTransaction) => {
     const transaction = db.transaction(ALL_STORES, 'readwrite');
     transaction.onerror = event => {
-        rejectTransaction(new Error(`Transaction error: ${event.target.error}`));
+        rejectTransaction(new Error(`Removing extraneous: ${event.target.error}`));
     };
 
     // Figuring out which restore points to keep and which to remove is non-trivial.
@@ -311,7 +311,7 @@ const createRestorePoint = (
     generateThumbnail(vm).then(thumbnailData => {
         const transaction = db.transaction(ALL_STORES, 'readwrite');
         transaction.onerror = event => {
-            rejectTransaction(new Error(`Transaction error: ${event.target.error}`));
+            rejectTransaction(new Error(`Creating restore point: ${event.target.error}`));
         };
 
         // Will be generated by database
@@ -398,7 +398,7 @@ const createRestorePoint = (
 const deleteRestorePoint = id => openDB().then(db => new Promise((resolve, reject) => {
     const transaction = db.transaction(ALL_STORES, 'readwrite');
     transaction.onerror = event => {
-        reject(new Error(`Transaction error: ${event.target.error}`));
+        reject(new Error(`Deleting restore point: ${event.target.error}`));
     };
 
     const metadataStore = transaction.objectStore(METADATA_STORE);
@@ -415,7 +415,7 @@ const deleteRestorePoint = id => openDB().then(db => new Promise((resolve, rejec
 const deleteAllRestorePoints = () => openDB().then(db => new Promise((resolveTransaction, rejectTransaction) => {
     const transaction = db.transaction(ALL_STORES, 'readwrite');
     transaction.onerror = event => {
-        rejectTransaction(new Error(`Transaction error: ${event.target.error}`));
+        rejectTransaction(new Error(`Deleting all restore points: ${event.target.error}`));
     };
 
     const deleteEverything = async () => {
@@ -449,7 +449,7 @@ const loadRestorePoint = (vm, id) => openDB().then(db => new Promise((resolvePro
         load: (assetType, assetId, dataFormat) => new Promise((resolveFetch, rejectFetch) => {
             const transaction = db.transaction([ASSET_STORE], 'readonly');
             transaction.onerror = event => {
-                rejectFetch(new Error(`Transaction error: ${event.target.error}`));
+                rejectFetch(new Error(`Loading restore point asset: ${event.target.error}`));
             };
 
             const md5ext = `${assetId}.${dataFormat}`;
@@ -475,7 +475,7 @@ const loadRestorePoint = (vm, id) => openDB().then(db => new Promise((resolvePro
     const loadProjectJSON = () => {
         const transaction = db.transaction([PROJECT_STORE], 'readonly');
         transaction.onerror = event => {
-            rejectProject(new Error(`Transaction error: ${event.target.error}`));
+            rejectProject(new Error(`Loading restore point JSON: ${event.target.error}`));
         };
 
         const projectStore = transaction.objectStore(PROJECT_STORE);
@@ -509,7 +509,7 @@ const loadRestorePoint = (vm, id) => openDB().then(db => new Promise((resolvePro
 const getAllRestorePoints = () => openDB().then(db => new Promise((resolve, reject) => {
     const transaction = db.transaction([METADATA_STORE], 'readonly');
     transaction.onerror = event => {
-        reject(new Error(`Transaction error: ${event.target.error}`));
+        reject(new Error(`Getting all restore points: ${event.target.error}`));
     };
 
     /** @type {Metadata[]} */
@@ -553,7 +553,7 @@ const getAllRestorePoints = () => openDB().then(db => new Promise((resolve, reje
 const getThumbnail = id => openDB().then(db => new Promise((resolve, reject) => {
     const transaction = db.transaction([THUMBNAIL_STORE], 'readonly');
     transaction.onerror = event => {
-        reject(new Error(`Transaction error: ${event.target.error}`));
+        reject(new Error(`Getting thumbnail: ${event.target.error}`));
     };
 
     const thumbnailStore = transaction.objectStore(THUMBNAIL_STORE);