opentui: fatal: undefined is not an object (evaluating 'agents()[0].name') on startup

[juchanhwang]

Description

Running opencode from the terminal crashes immediately on startup with a TypeError in local.tsx:39.

This is different from #7918, which crashes after an auth flow (/connect) at prompt/index.tsx:840. This crash occurs during LocalProvider initialization, triggered by a theme store update (theme.tsx:234 → setStore), before the TUI even renders.

Root cause: agents() returns an empty array during createStore initialization, so agents()[0] is undefined:

// local.tsx:39
const [agentStore, setAgentStore] = createStore<{ current: string }>({
  current: agents()[0].name,  // agents()[0] is undefined → TypeError
})

Stack Trace

TypeError: undefined is not an object (evaluating 'agents()[0].name')
    at <anonymous> (src/cli/cmd/tui/context/local.tsx:39:27)
    at init (src/cli/cmd/tui/context/local.tsx:35:19)
    at provider (src/cli/cmd/tui/context/helper.tsx:8:26)
    at untrack (../../node_modules/.bun/solid-js@1.9.10/node_modules/solid-js/dist/dev.js:475:12)
    at runComputation (../../node_modules/.bun/solid-js@1.9.10/node_modules/solid-js/dist/dev.js:742:22)
    at updateComputation (../../node_modules/.bun/solid-js@1.9.10/node_modules/solid-js/dist/dev.js:724:3)
    at devComponent (../../node_modules/.bun/solid-js@1.9.10/node_modules/solid-js/dist/dev.js:593:3)
    at children (src/cli/cmd/tui/context/helper.tsx:18:24)
    ...
    at setStore (../../node_modules/.bun/solid-js@1.9.10/node_modules/solid-js/store/dist/dev.js:221:5)
    at <anonymous> (src/cli/cmd/tui/context/theme.tsx:234:11)
    at processTicksAndRejections (native:7:39)

OpenCode version

1.2.6

Steps to reproduce

1. Run opencode from the terminal
2. TUI crashes immediately on startup

Screenshot and/or share link

No response

Operating System

macOS (Darwin 25.2.0)

Terminal

No response

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• opentui: fatal: undefined is not an object (evaluating 'agents()[0]') #9692: Same crash — undefined is not an object (evaluating 'agents()[0]'), the exact same expression and root cause

[juchanhwang]

Closing this issue — confirmed that removing oh-my-opencode@latest from the plugin list resolves the crash. The root cause is in the oh-my-opencode plugin, not opencode itself. Filing an issue on the oh-my-opencode repository instead.