fix: remove 8 more unnecessary `as any` casts in opencode core (#22877)

packages/opencode/src/acp/agent.ts

@@ -178,7 +178,7 @@ export namespace ACP {
         })
         for await (const event of events.stream) {
           if (this.eventAbort.signal.aborted) return
-          const payload = (event as any)?.payload
+          const payload = event?.payload
           if (!payload) continue
           await this.handleEvent(payload as Event).catch((error) => {
             log.error("failed to handle event", { error, type: payload.type })

packages/opencode/src/cli/cmd/providers.ts

@@ -297,7 +297,9 @@ export const ProvidersLoginCommand = cmd({
         prompts.intro("Add credential")
         if (args.url) {
           const url = args.url.replace(/\/+$/, "")
-          const wellknown = await fetch(`${url}/.well-known/opencode`).then((x) => x.json() as any)
+          const wellknown = (await fetch(`${url}/.well-known/opencode`).then((x) => x.json())) as {
+            auth: { command: string[]; env: string }
+          }
           prompts.log.info(`Running \`${wellknown.auth.command.join(" ")}\``)
           const proc = Process.spawn(wellknown.auth.command, {
             stdout: "pipe",

packages/opencode/src/cli/cmd/tui/win32.ts

@@ -1,4 +1,5 @@
 import { dlopen, ptr } from "bun:ffi"
+import type { ReadStream } from "node:tty"
 
 const STD_INPUT_HANDLE = -10
 const ENABLE_PROCESSED_INPUT = 0x0001
@@ -71,7 +72,7 @@ export function win32InstallCtrlCGuard() {
   if (!load()) return
   if (unhook) return unhook
 
-  const stdin = process.stdin as any
+  const stdin = process.stdin as ReadStream
   const original = stdin.setRawMode
 
   const handle = k32!.symbols.GetStdHandle(STD_INPUT_HANDLE)
@@ -93,7 +94,7 @@ export function win32InstallCtrlCGuard() {
     setImmediate(enforce)
   }
 
-  let wrapped: ((mode: boolean) => unknown) | undefined
+  let wrapped: ReadStream["setRawMode"] | undefined
 
   if (typeof original === "function") {
     wrapped = (mode: boolean) => {

packages/opencode/src/lsp/lsp.ts

@@ -465,12 +465,12 @@ export const layer = Layer.effect(
       direction: "callHierarchy/incomingCalls" | "callHierarchy/outgoingCalls",
     ) {
       const results = yield* run(input.file, async (client) => {
-        const items = (await client.connection
-          .sendRequest("textDocument/prepareCallHierarchy", {
+        const items = await client.connection
+          .sendRequest<unknown[] | null>("textDocument/prepareCallHierarchy", {
             textDocument: { uri: pathToFileURL(input.file).href },
             position: { line: input.line, character: input.character },
           })
-          .catch(() => [])) as any[]
+          .catch(() => [] as unknown[])
         if (!items?.length) return []
         return client.connection.sendRequest(direction, { item: items[0] }).catch(() => [])
       })

packages/opencode/src/mcp/mcp.ts

@@ -531,7 +531,7 @@ export const layer = Layer.effect(
               Object.values(s.clients),
               (client) =>
                 Effect.gen(function* () {
-                  const pid = (client.transport as any)?.pid
+                  const pid = client.transport instanceof StdioClientTransport ? client.transport.pid : null
                   if (typeof pid === "number") {
                     const pids = yield* descendants(pid)
                     for (const dpid of pids) {

packages/opencode/src/provider/sdk/copilot/responses/openai-responses-language-model.ts

@@ -354,7 +354,7 @@ export class OpenAIResponsesLanguageModel implements LanguageModelV3 {
         details: "flex processing is only available for o3, o4-mini, and gpt-5 models",
       })
       // Remove from args if not supported
-      delete (baseArgs as any).service_tier
+      baseArgs.service_tier = undefined
     }
 
     // Validate priority processing support
@@ -366,7 +366,7 @@ export class OpenAIResponsesLanguageModel implements LanguageModelV3 {
           "priority processing is only available for supported models (gpt-4, gpt-5, gpt-5-mini, o3, o4-mini) and requires Enterprise access. gpt-5-nano is not supported",
       })
       // Remove from args if not supported
-      delete (baseArgs as any).service_tier
+      baseArgs.service_tier = undefined
     }
 
     const {

packages/opencode/src/provider/transform.ts

@@ -193,7 +193,7 @@ function normalizeMessages(
             providerOptions: {
               ...msg.providerOptions,
               openaiCompatible: {
-                ...(msg.providerOptions as any)?.openaiCompatible,
+                ...msg.providerOptions?.openaiCompatible,
                 [field]: reasoningText,
               },
             },

packages/opencode/src/util/effect-zod.ts

@@ -77,8 +77,8 @@ function union(ast: SchemaAST.Union): z.ZodTypeAny {
   if (items.length === 1) return items[0]
   if (items.length < 2) return fail(ast)
 
-  const discriminator = (ast as any).annotations?.discriminator
-  if (discriminator) {
+  const discriminator = ast.annotations?.discriminator
+  if (typeof discriminator === "string") {
     return z.discriminatedUnion(discriminator, items as [z.ZodObject<any>, z.ZodObject<any>, ...z.ZodObject<any>[]])
   }