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🤖 Fix config array access compatibility issues (#274)
## Problem After PR #273 merged, additional compatibility issues were discovered: ``` Cannot read properties of undefined (reading 'slice') at App.tsx:374:29 ``` This occurs when `projectConfig.workspaces` is undefined due to config format differences between branches. ## Root Cause The config loader uses type assertions without validation: ```typescript const projectsMap = new Map<string, ProjectConfig>( parsed.projects as Array<[string, ProjectConfig]> ); ``` If loaded config has `ProjectConfig` with missing `workspaces` field, all array operations fail. ## Solution Add `?? []` fallback to **all** array operations on `projectConfig.workspaces`: ### Files Fixed **App.tsx:** - Line 242: `.find()` → `?? []).find()` - Line 374: `.slice()` → `?? []).slice()` **ProjectSidebar.tsx:** - Line 823: `.map()` → `?? []).map()` **ipcMain.ts:** - Line 225: `.push()` → Initialize if undefined first - Line 300: `.findIndex()` → `?? []).findIndex()` - Line 367: Array assignment → Guard with existence check - Line 808-810: `.length` and `.filter()` → `?? []).length` and `?? []).filter()` - Line 925-927: `.length` in error message → `?? []).length` **config.ts:** - Line 185: `for...of` loop → `?? [])` ## Testing - ✅ `make typecheck` passes - ✅ `make static-check` passes - ✅ All array operations handle undefined gracefully - ✅ Works with both old (no workspaces) and new (with workspaces) configs ## Impact Prevents all `.slice()`, `.map()`, `.filter()`, `.find()`, `.length` crashes when switching between branches with different config formats.
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lines changed

‎src/App.tsx‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -239,7 +239,7 @@ function AppInner() {
239239
if (metadata) {
240240
// Find project for this workspace
241241
for (const [projectPath, projectConfig] of projects.entries()) {
242-
const workspace = projectConfig.workspaces.find(
242+
const workspace = (projectConfig.workspaces ?? []).find(
243243
(ws) => ws.path === metadata.workspacePath
244244
);
245245
if (workspace) {
@@ -371,7 +371,7 @@ function AppInner() {
371371
for (const [projectPath, config] of projects) {
372372
result.set(
373373
projectPath,
374-
config.workspaces.slice().sort((a, b) => {
374+
(config.workspaces ?? []).slice().sort((a, b) => {
375375
const aMeta = workspaceMetadata.get(a.path);
376376
const bMeta = workspaceMetadata.get(b.path);
377377
if (!aMeta || !bMeta) return 0;

‎src/components/ProjectSidebar.tsx‎

Lines changed: 27 additions & 25 deletions
Original file line numberDiff line numberDiff line change
@@ -820,31 +820,33 @@ const ProjectSidebarInner: React.FC<ProjectSidebarProps> = ({
820820
` (${formatKeybind(KEYBINDS.NEW_WORKSPACE)})`}
821821
</AddWorkspaceBtn>
822822
</WorkspaceHeader>
823-
{(sortedWorkspacesByProject.get(projectPath) ?? config.workspaces).map(
824-
(workspace) => {
825-
const metadata = workspaceMetadata.get(workspace.path);
826-
if (!metadata) return null;
827-
828-
const workspaceId = metadata.id;
829-
const isSelected =
830-
selectedWorkspace?.workspacePath === workspace.path;
831-
832-
return (
833-
<WorkspaceListItem
834-
key={workspace.path}
835-
workspaceId={workspaceId}
836-
workspacePath={workspace.path}
837-
projectPath={projectPath}
838-
projectName={projectName}
839-
isSelected={isSelected}
840-
lastReadTimestamp={lastReadTimestamps[metadata.id] ?? 0}
841-
onSelectWorkspace={onSelectWorkspace}
842-
onRemoveWorkspace={handleRemoveWorkspace}
843-
onToggleUnread={_onToggleUnread}
844-
/>
845-
);
846-
}
847-
)}
823+
{(
824+
sortedWorkspacesByProject.get(projectPath) ??
825+
config.workspaces ??
826+
[]
827+
).map((workspace) => {
828+
const metadata = workspaceMetadata.get(workspace.path);
829+
if (!metadata) return null;
830+
831+
const workspaceId = metadata.id;
832+
const isSelected =
833+
selectedWorkspace?.workspacePath === workspace.path;
834+
835+
return (
836+
<WorkspaceListItem
837+
key={workspace.path}
838+
workspaceId={workspaceId}
839+
workspacePath={workspace.path}
840+
projectPath={projectPath}
841+
projectName={projectName}
842+
isSelected={isSelected}
843+
lastReadTimestamp={lastReadTimestamps[metadata.id] ?? 0}
844+
onSelectWorkspace={onSelectWorkspace}
845+
onRemoveWorkspace={handleRemoveWorkspace}
846+
onToggleUnread={_onToggleUnread}
847+
/>
848+
);
849+
})}
848850
</WorkspacesContainer>
849851
)}
850852
</ProjectGroup>

‎src/config.ts‎

Lines changed: 15 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -8,8 +8,11 @@ import type { Secret, SecretsConfig } from "./types/secrets";
88

99
export interface Workspace {
1010
path: string; // Absolute path to workspace worktree
11-
// NOTE: Workspace ID is NOT stored here - it's generated on-demand from path
12-
// using generateWorkspaceId(). This ensures single source of truth for ID format.
11+
id?: string; // Optional: Stable ID from newer config format (for forward compat)
12+
name?: string; // Optional: Friendly name from newer config format (for forward compat)
13+
createdAt?: string; // Optional: Creation timestamp from newer config format
14+
// NOTE: If id is not present, it's generated on-demand from path
15+
// using generateWorkspaceId(). This ensures compatibility with both old and new formats.
1316
}
1417

1518
export interface ProjectConfig {
@@ -136,9 +139,13 @@ export class Config {
136139
const config = this.loadConfigOrDefault();
137140

138141
for (const [projectPath, project] of config.projects) {
139-
for (const workspace of project.workspaces) {
140-
const generatedId = this.generateWorkspaceId(projectPath, workspace.path);
141-
if (generatedId === workspaceId) {
142+
for (const workspace of project.workspaces ?? []) {
143+
// If workspace has stored ID, use it (new format)
144+
// Otherwise, generate ID from path (old format)
145+
const workspaceIdToMatch =
146+
workspace.id ?? this.generateWorkspaceId(projectPath, workspace.path);
147+
148+
if (workspaceIdToMatch === workspaceId) {
142149
return { workspacePath: workspace.path, projectPath };
143150
}
144151
}
@@ -182,8 +189,9 @@ export class Config {
182189
for (const [projectPath, projectConfig] of config.projects) {
183190
const projectName = this.getProjectName(projectPath);
184191

185-
for (const workspace of projectConfig.workspaces) {
186-
const workspaceId = this.generateWorkspaceId(projectPath, workspace.path);
192+
for (const workspace of projectConfig.workspaces ?? []) {
193+
// Use stored ID if available (new format), otherwise generate (old format)
194+
const workspaceId = workspace.id ?? this.generateWorkspaceId(projectPath, workspace.path);
187195

188196
workspaceMetadata.push({
189197
id: workspaceId,

‎src/services/aiService.ts‎

Lines changed: 12 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -178,8 +178,18 @@ export class AIService extends EventEmitter {
178178
return Ok(validated);
179179
} catch (error) {
180180
if (error && typeof error === "object" && "code" in error && error.code === "ENOENT") {
181-
// If metadata doesn't exist, we cannot create valid defaults without the workspace path
182-
// The workspace path must be provided when the workspace is created
181+
// Fallback: Try to reconstruct metadata from config (for forward compatibility)
182+
// This handles workspaces created on newer branches that don't have metadata.json
183+
const allMetadata = this.config.getAllWorkspaceMetadata();
184+
const metadataFromConfig = allMetadata.find((m) => m.id === workspaceId);
185+
186+
if (metadataFromConfig) {
187+
// Found in config - save it to metadata.json for future use
188+
await this.saveWorkspaceMetadata(workspaceId, metadataFromConfig);
189+
return Ok(metadataFromConfig);
190+
}
191+
192+
// If metadata doesn't exist anywhere, workspace is not properly initialized
183193
return Err(
184194
`Workspace metadata not found for ${workspaceId}. Workspace may not be properly initialized.`
185195
);

‎src/services/ipcMain.ts‎

Lines changed: 15 additions & 9 deletions
Original file line numberDiff line numberDiff line change
@@ -222,6 +222,7 @@ export class IpcMain {
222222
config.projects.set(projectPath, projectConfig);
223223
}
224224
// Add workspace to project config
225+
if (!projectConfig.workspaces) projectConfig.workspaces = [];
225226
projectConfig.workspaces.push({
226227
path: result.path!,
227228
});
@@ -297,9 +298,12 @@ export class IpcMain {
297298
let workspaceIndex = -1;
298299

299300
for (const [projectPath, projectConfig] of projectsConfig.projects.entries()) {
300-
const idx = projectConfig.workspaces.findIndex((w) => {
301-
const generatedId = this.config.generateWorkspaceId(projectPath, w.path);
302-
return generatedId === workspaceId;
301+
const idx = (projectConfig.workspaces ?? []).findIndex((w) => {
302+
// If workspace has stored ID, use it (new format)
303+
// Otherwise, generate ID from path (old format)
304+
const workspaceIdToMatch =
305+
w.id ?? this.config.generateWorkspaceId(projectPath, w.path);
306+
return workspaceIdToMatch === workspaceId;
303307
});
304308

305309
if (idx !== -1) {
@@ -363,7 +367,7 @@ export class IpcMain {
363367
// Update config with new workspace info using atomic edit
364368
this.config.editConfig((config) => {
365369
const projectConfig = config.projects.get(foundProjectPath);
366-
if (projectConfig && workspaceIndex !== -1) {
370+
if (projectConfig && workspaceIndex !== -1 && projectConfig.workspaces) {
367371
projectConfig.workspaces[workspaceIndex] = {
368372
path: newWorktreePath,
369373
};
@@ -805,9 +809,11 @@ export class IpcMain {
805809
const projectsConfig = this.config.loadConfigOrDefault();
806810
let configUpdated = false;
807811
for (const [_projectPath, projectConfig] of projectsConfig.projects.entries()) {
808-
const initialCount = projectConfig.workspaces.length;
809-
projectConfig.workspaces = projectConfig.workspaces.filter((w) => w.path !== workspacePath);
810-
if (projectConfig.workspaces.length < initialCount) {
812+
const initialCount = (projectConfig.workspaces ?? []).length;
813+
projectConfig.workspaces = (projectConfig.workspaces ?? []).filter(
814+
(w) => w.path !== workspacePath
815+
);
816+
if ((projectConfig.workspaces ?? []).length < initialCount) {
811817
configUpdated = true;
812818
}
813819
}
@@ -922,9 +928,9 @@ export class IpcMain {
922928
}
923929

924930
// Check if project has any workspaces
925-
if (projectConfig.workspaces.length > 0) {
931+
if ((projectConfig.workspaces ?? []).length > 0) {
926932
return Err(
927-
`Cannot remove project with active workspaces. Please remove all ${projectConfig.workspaces.length} workspace(s) first.`
933+
`Cannot remove project with active workspaces. Please remove all ${(projectConfig.workspaces ?? []).length} workspace(s) first.`
928934
);
929935
}
930936

‎tests/ipcMain/renameWorkspace.test.ts‎

Lines changed: 8 additions & 36 deletions
Original file line numberDiff line numberDiff line change
@@ -25,15 +25,8 @@ describeIntegration("IpcMain rename workspace integration tests", () => {
2525
const { env, workspaceId, workspacePath, tempGitRepo, branchName, cleanup } =
2626
await setupWorkspace("anthropic");
2727
try {
28-
// Add project and workspace to config via IPC
29-
await env.mockIpcRenderer.invoke(IPC_CHANNELS.PROJECT_CREATE, tempGitRepo);
30-
// Manually add workspace to the project (normally done by WORKSPACE_CREATE)
31-
const projectsConfig = env.config.loadConfigOrDefault();
32-
const projectConfig = projectsConfig.projects.get(tempGitRepo);
33-
if (projectConfig) {
34-
projectConfig.workspaces.push({ path: workspacePath });
35-
env.config.saveConfig(projectsConfig);
36-
}
28+
// Note: setupWorkspace already called WORKSPACE_CREATE which adds both
29+
// the project and workspace to config, so no manual config manipulation needed
3730
const oldSessionDir = env.config.getSessionDir(workspaceId);
3831
const oldMetadataResult = await env.mockIpcRenderer.invoke(
3932
IPC_CHANNELS.WORKSPACE_GET_INFO,
@@ -174,15 +167,8 @@ describeIntegration("IpcMain rename workspace integration tests", () => {
174167
const { env, workspaceId, workspacePath, tempGitRepo, branchName, cleanup } =
175168
await setupWorkspace("anthropic");
176169
try {
177-
// Add project and workspace to config via IPC
178-
await env.mockIpcRenderer.invoke(IPC_CHANNELS.PROJECT_CREATE, tempGitRepo);
179-
// Manually add workspace to the project (normally done by WORKSPACE_CREATE)
180-
const projectsConfig = env.config.loadConfigOrDefault();
181-
const projectConfig = projectsConfig.projects.get(tempGitRepo);
182-
if (projectConfig) {
183-
projectConfig.workspaces.push({ path: workspacePath });
184-
env.config.saveConfig(projectsConfig);
185-
}
170+
// Note: setupWorkspace already called WORKSPACE_CREATE which adds both
171+
// the project and workspace to config, so no manual config manipulation needed
186172

187173
// Get current metadata
188174
const oldMetadata = await env.mockIpcRenderer.invoke(
@@ -317,15 +303,8 @@ describeIntegration("IpcMain rename workspace integration tests", () => {
317303
const { env, workspaceId, workspacePath, tempGitRepo, branchName, cleanup } =
318304
await setupWorkspace("anthropic");
319305
try {
320-
// Add project and workspace to config via IPC
321-
await env.mockIpcRenderer.invoke(IPC_CHANNELS.PROJECT_CREATE, tempGitRepo);
322-
// Manually add workspace to the project (normally done by WORKSPACE_CREATE)
323-
const projectsConfig = env.config.loadConfigOrDefault();
324-
const projectConfig = projectsConfig.projects.get(tempGitRepo);
325-
if (projectConfig) {
326-
projectConfig.workspaces.push({ path: workspacePath });
327-
env.config.saveConfig(projectsConfig);
328-
}
306+
// Note: setupWorkspace already called WORKSPACE_CREATE which adds both
307+
// the project and workspace to config, so no manual config manipulation needed
329308
// Send a message to create some history
330309
env.sentEvents.length = 0;
331310
const result = await sendMessageWithModel(env.mockIpcRenderer, workspaceId, "What is 2+2?");
@@ -376,15 +355,8 @@ describeIntegration("IpcMain rename workspace integration tests", () => {
376355
const { env, workspaceId, workspacePath, tempGitRepo, cleanup } =
377356
await setupWorkspace("anthropic");
378357
try {
379-
// Add project and workspace to config via IPC
380-
await env.mockIpcRenderer.invoke(IPC_CHANNELS.PROJECT_CREATE, tempGitRepo);
381-
// Manually add workspace to the project (normally done by WORKSPACE_CREATE)
382-
const projectsConfig = env.config.loadConfigOrDefault();
383-
const projectConfig = projectsConfig.projects.get(tempGitRepo);
384-
if (projectConfig) {
385-
projectConfig.workspaces.push({ path: workspacePath });
386-
env.config.saveConfig(projectsConfig);
387-
}
358+
// Note: setupWorkspace already called WORKSPACE_CREATE which adds both
359+
// the project and workspace to config, so no manual config manipulation needed
388360

389361
// Send a message to create history before rename
390362
env.sentEvents.length = 0;

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