From dbd72df3a47a9c8515b567af2ece36b138da967f Mon Sep 17 00:00:00 2001
From: Aiden Cline <aidenpcline@gmail.com>
Date: Fri, 20 Mar 2026 16:02:25 -0500
Subject: [PATCH] fix: further adjust provider.ts, ensure that the typing for
 language is LanguageModelV3 instead of LanuageModel union (should fix compat
 in llm.ts)

---
 packages/opencode/src/provider/provider.ts | 9 ++++++---
 packages/opencode/src/session/llm.ts       | 3 ---
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/packages/opencode/src/provider/provider.ts b/packages/opencode/src/provider/provider.ts
index 58994f3207..92c35a0d74 100644
--- a/packages/opencode/src/provider/provider.ts
+++ b/packages/opencode/src/provider/provider.ts
@@ -9,6 +9,7 @@ import { BunProc } from "../bun"
 import { Hash } from "../util/hash"
 import { Plugin } from "../plugin"
 import { NamedError } from "@opencode-ai/util/error"
+import { type LanguageModelV3 } from "@ai-sdk/provider"
 import { ModelsDev } from "./models"
 import { Auth } from "../auth"
 import { Env } from "../env"
@@ -104,7 +105,9 @@ export namespace Provider {
     })
   }
 
-  type BundledSDK = Pick<SDK, "languageModel">
+  type BundledSDK = {
+    languageModel(modelId: string): LanguageModelV3
+  }
 
   const BUNDLED_PROVIDERS: Record<string, (options: any) => BundledSDK> = {
     "@ai-sdk/amazon-bedrock": createAmazonBedrock,
@@ -848,7 +851,7 @@ export namespace Provider {
     }
 
     const providers: Record<ProviderID, Info> = {} as Record<ProviderID, Info>
-    const languages = new Map<string, ReturnType<SDK["languageModel"]>>()
+    const languages = new Map<string, LanguageModelV3>()
     const modelLoaders: {
       [providerID: string]: CustomModelLoader
     } = {}
@@ -1242,7 +1245,7 @@ export namespace Provider {
     return info
   }
 
-  export async function getLanguage(model: Model): Promise<ReturnType<SDK["languageModel"]>> {
+  export async function getLanguage(model: Model): Promise<LanguageModelV3> {
     const s = await state()
     const key = `${model.providerID}/${model.id}`
     if (s.models.has(key)) return s.models.get(key)!
diff --git a/packages/opencode/src/session/llm.ts b/packages/opencode/src/session/llm.ts
index daf70180e5..d00361cb69 100644
--- a/packages/opencode/src/session/llm.ts
+++ b/packages/opencode/src/session/llm.ts
@@ -1,4 +1,3 @@
-import { Installation } from "@/installation"
 import { Provider } from "@/provider/provider"
 import { Log } from "@/util/log"
 import {
@@ -42,8 +41,6 @@ export namespace LLM {
     toolChoice?: "auto" | "required" | "none"
   }
 
-  export type StreamOutput = StreamTextResult<ToolSet, unknown>
-
   export async function stream(input: StreamInput) {
     const l = log
       .clone()