fix: rm tool reorder logic from old bug (#30483)

packages/opencode/src/provider/transform.ts

@@ -212,31 +212,7 @@ function normalizeMessages(
       return msg
     })
   }
-  if (["@ai-sdk/anthropic", "@ai-sdk/google-vertex/anthropic"].includes(model.api.npm)) {
-    // Anthropic rejects assistant turns where tool_use blocks are followed by non-tool
-    // content, e.g. [tool_use, tool_use, text], with:
-    // `tool_use` ids were found without `tool_result` blocks immediately after...
-    //
-    // Reorder that invalid shape into [text] + [tool_use, tool_use]. Consecutive
-    // assistant messages are later merged by the provider/SDK, so preserving the
-    // original [tool_use...] then [text] order still produces the invalid payload.
-    //
-    // The root cause appears to be somewhere upstream where the stream is originally
-    // processed. We were unable to locate an exact narrower reproduction elsewhere,
-    // so we keep this transform in place for the time being.
-    msgs = msgs.flatMap((msg) => {
-      if (msg.role !== "assistant" || !Array.isArray(msg.content)) return [msg]
-
-      const parts = msg.content
-      const first = parts.findIndex((part) => part.type === "tool-call")
-      if (first === -1) return [msg]
-      if (!parts.slice(first).some((part) => part.type !== "tool-call")) return [msg]
-      return [
-        { ...msg, content: parts.filter((part) => part.type !== "tool-call") },
-        { ...msg, content: parts.filter((part) => part.type === "tool-call") },
-      ]
-    })
-  }
+
   if (
     model.providerID === "mistral" ||
     model.api.id.toLowerCase().includes("mistral") ||

packages/opencode/test/provider/transform.test.ts

@@ -1614,50 +1614,6 @@ describe("ProviderTransform.message - anthropic empty content filtering", () =>
     expect(result[1].content).toHaveLength(1)
   })
 
-  test("splits anthropic assistant messages when text trails tool calls", () => {
-    const msgs = [
-      {
-        role: "user",
-        content: [{ type: "text", text: "Check my home directory for PDFs" }],
-      },
-      {
-        role: "assistant",
-        content: [
-          { type: "tool-call", toolCallId: "toolu_1", toolName: "read", input: { filePath: "/root" } },
-          { type: "tool-call", toolCallId: "toolu_2", toolName: "glob", input: { pattern: "**/*.pdf" } },
-          { type: "text", text: "I checked your home directory and looked for PDF files." },
-        ],
-      },
-      {
-        role: "tool",
-        content: [
-          { type: "tool-result", toolCallId: "toolu_1", toolName: "read", output: { type: "text", value: "ok" } },
-          {
-            type: "tool-result",
-            toolCallId: "toolu_2",
-            toolName: "glob",
-            output: { type: "text", value: "No files found" },
-          },
-        ],
-      },
-    ] as any[]
-
-    const result = ProviderTransform.message(msgs, anthropicModel, {}) as any[]
-
-    expect(result).toHaveLength(4)
-    expect(result[1]).toMatchObject({
-      role: "assistant",
-      content: [{ type: "text", text: "I checked your home directory and looked for PDF files." }],
-    })
-    expect(result[2]).toMatchObject({
-      role: "assistant",
-      content: [
-        { type: "tool-call", toolCallId: "toolu_1", toolName: "read", input: { filePath: "/root" } },
-        { type: "tool-call", toolCallId: "toolu_2", toolName: "glob", input: { pattern: "**/*.pdf" } },
-      ],
-    })
-  })
-
   test("leaves valid anthropic assistant tool ordering unchanged", () => {
     const msgs = [
       {
@@ -1680,43 +1636,6 @@ describe("ProviderTransform.message - anthropic empty content filtering", () =>
     ])
   })
 
-  test("splits vertex anthropic assistant messages when text trails tool calls", () => {
-    const model = {
-      ...anthropicModel,
-      providerID: "google-vertex-anthropic",
-      api: {
-        id: "claude-sonnet-4@20250514",
-        url: "https://us-central1-aiplatform.googleapis.com",
-        npm: "@ai-sdk/google-vertex/anthropic",
-      },
-    }
-
-    const msgs = [
-      {
-        role: "assistant",
-        content: [
-          { type: "tool-call", toolCallId: "toolu_1", toolName: "read", input: { filePath: "/root" } },
-          { type: "tool-call", toolCallId: "toolu_2", toolName: "glob", input: { pattern: "**/*.pdf" } },
-          { type: "text", text: "I checked your home directory and looked for PDF files." },
-        ],
-      },
-    ] as any[]
-
-    const result = ProviderTransform.message(msgs, model, {}) as any[]
-
-    expect(result).toHaveLength(2)
-    expect(result[0]).toMatchObject({
-      role: "assistant",
-      content: [{ type: "text", text: "I checked your home directory and looked for PDF files." }],
-    })
-    expect(result[1]).toMatchObject({
-      role: "assistant",
-      content: [
-        { type: "tool-call", toolCallId: "toolu_1", toolName: "read", input: { filePath: "/root" } },
-        { type: "tool-call", toolCallId: "toolu_2", toolName: "glob", input: { pattern: "**/*.pdf" } },
-      ],
-    })
-  })
 })
 
 describe("ProviderTransform.message - strip openai metadata when store=false", () => {