chore: fix unused vars not being flagged by our lint tooling

.changeset/twelve-moons-hang.md

@@ -0,0 +1,32 @@
+---
+"@ai-sdk/openai-compatible": patch
+"@ai-sdk/amazon-bedrock": patch
+"@ai-sdk/open-responses": patch
+"@ai-sdk/provider-utils": patch
+"@ai-sdk/google-vertex": patch
+"@ai-sdk/moonshotai": patch
+"@ai-sdk/togetherai": patch
+"@ai-sdk/anthropic": patch
+"@ai-sdk/deepinfra": patch
+"@ai-sdk/fireworks": patch
+"@ai-sdk/cerebras": patch
+"@ai-sdk/devtools": patch
+"@ai-sdk/alibaba": patch
+"@ai-sdk/baseten": patch
+"@ai-sdk/codemod": patch
+"@ai-sdk/gateway": patch
+"@ai-sdk/cohere": patch
+"@ai-sdk/google": patch
+"@ai-sdk/openai": patch
+"@ai-sdk/vercel": patch
+"@ai-sdk/react": patch
+"@ai-sdk/groq": patch
+"@ai-sdk/luma": patch
+"@ai-sdk/otel": patch
+"@ai-sdk/fal": patch
+"@ai-sdk/mcp": patch
+"@ai-sdk/xai": patch
+"ai": patch
+---
+
+chore: fix unused vars not being flagged by our lint tooling

.oxlintrc.json

@@ -11,6 +11,12 @@
       "rules": {
         "no-redeclare": "off"
       }
+    },
+    {
+      "files": ["examples/**", "**/*.test.ts"],
+      "rules": {
+        "no-unused-vars": "off"
+      }
     }
   ],
   "rules": {
@@ -64,7 +70,7 @@
     "no-unneeded-ternary": "off",
     "no-unsafe-finally": "off",
     "no-unused-expressions": "off",
-    "no-unused-vars": "off",
+    "no-unused-vars": "error",
     "no-use-before-define": "off",
     "no-useless-catch": "off",
     "no-useless-concat": "off",

packages/ai/src/generate-object/generate-object.ts

@@ -19,15 +19,11 @@ import { standardizePrompt } from '../prompt/standardize-prompt';
 import { wrapGatewayError } from '../prompt/wrap-gateway-error';
 import { getGlobalTelemetryIntegration } from '../telemetry/get-global-telemetry-integration';
 import { TelemetrySettings } from '../telemetry/telemetry-settings';
-import {
-  CallWarning,
-  FinishReason,
-  LanguageModel,
-} from '../types/language-model';
+import { LanguageModel } from '../types/language-model';
 import { LanguageModelRequestMetadata } from '../types/language-model-request-metadata';
 import { LanguageModelResponseMetadata } from '../types/language-model-response-metadata';
-import { ProviderMetadata } from '../types/provider-metadata';
-import { asLanguageModelUsage, LanguageModelUsage } from '../types/usage';
+
+import { asLanguageModelUsage } from '../types/usage';
 import { DownloadFunction } from '../util/download/download-function';
 import { notify } from '../util/notify';
 import type { Listener } from '../util/notify';

packages/ai/src/generate-object/output-strategy.ts

@@ -141,7 +141,7 @@ const arrayOutputStrategy = <ELEMENT>(
     // possible future optimization: use arrays directly when model supports grammar-guided generation
     jsonSchema: async () => {
       // remove $schema from schema.jsonSchema:
-      const { $schema, ...itemSchema } = await schema.jsonSchema;
+      const { $schema: _$schema, ...itemSchema } = await schema.jsonSchema;
 
       return {
         $schema: 'http://json-schema.org/draft-07/schema#',

packages/ai/src/generate-text/output.ts

@@ -218,7 +218,7 @@ export const array = <ELEMENT>({
     // JSON schema that describes an array of elements:
     responseFormat: resolve(elementSchema.jsonSchema).then(jsonSchema => {
       // remove $schema from schema.jsonSchema:
-      const { $schema, ...itemSchema } = jsonSchema;
+      const { $schema: _$schema, ...itemSchema } = jsonSchema;
 
       return {
         type: 'json' as const,

packages/ai/src/prompt/convert-to-language-model-prompt.ts

@@ -412,7 +412,7 @@ async function downloadAssets(
       if (typeof data === 'string') {
         try {
           data = new URL(data);
-        } catch (ignored) {}
+        } catch {}
       }
 
       return { mediaType, data };

packages/ai/src/prompt/data-content.ts

@@ -44,7 +44,7 @@ export function convertToLanguageModelV4DataContent(
   if (typeof content === 'string') {
     try {
       content = new URL(content);
-    } catch (error) {
+    } catch {
       // ignored
     }
   }
@@ -128,7 +128,7 @@ export function convertDataContentToUint8Array(
 export function convertUint8ArrayToText(uint8Array: Uint8Array): string {
   try {
     return new TextDecoder().decode(uint8Array);
-  } catch (error) {
+  } catch {
     throw new Error('Error decoding Uint8Array to text');
   }
 }

packages/ai/src/prompt/split-data-url.ts

@@ -8,7 +8,7 @@ export function splitDataUrl(dataUrl: string): {
       mediaType: header.split(';')[0].split(':')[1],
       base64Content,
     };
-  } catch (error) {
+  } catch {
     return {
       mediaType: undefined,
       base64Content: undefined,

packages/ai/src/telemetry/get-global-telemetry-integration.ts

@@ -34,8 +34,8 @@ export function bindTelemetryIntegration(
 }
 
 export function getGlobalTelemetryIntegration<
-  TOOLS extends ToolSet = ToolSet,
-  OUTPUT extends Output = Output,
+  _TOOLS extends ToolSet = ToolSet,
+  _OUTPUT extends Output = Output,
 >(): (args?: {
   integrations?: TelemetryIntegration | Array<TelemetryIntegration>;
 }) => TelemetryIntegration {

packages/ai/src/ui-message-stream/create-ui-message-stream.ts

@@ -66,7 +66,7 @@ export function createUIMessageStream<UI_MESSAGE extends UIMessage>({
   function safeEnqueue(data: InferUIMessageChunk<UI_MESSAGE>) {
     try {
       controller.enqueue(data);
-    } catch (error) {
+    } catch {
       // suppress errors when the stream has been closed
     }
   }
@@ -129,7 +129,7 @@ export function createUIMessageStream<UI_MESSAGE extends UIMessage>({
   waitForStreams.finally(() => {
     try {
       controller.close();
-    } catch (error) {
+    } catch {
       // suppress errors when the stream has been closed
     }
   });

packages/ai/src/ui/process-ui-message-stream.ts

@@ -1,4 +1,3 @@
-import { TypeValidationContext } from '@ai-sdk/provider';
 import { FlexibleSchema, validateTypes } from '@ai-sdk/provider-utils';
 import { UIMessageStreamError } from '../error/ui-message-stream-error';
 import { ProviderMetadata } from '../types';

packages/ai/src/ui/validate-ui-messages.ts

@@ -1,8 +1,7 @@
-import { TypeValidationContext, TypeValidationError } from '@ai-sdk/provider';
+import { TypeValidationError } from '@ai-sdk/provider';
 import {
   FlexibleSchema,
   lazySchema,
-  StandardSchemaV1,
   Tool,
   validateTypes,
   zodSchema,

packages/ai/src/util/data-url.ts

@@ -11,7 +11,7 @@ export function getTextFromDataUrl(dataUrl: string): string {
 
   try {
     return window.atob(base64Content);
-  } catch (error) {
+  } catch {
     throw new Error(`Error decoding data URL`);
   }
 }

packages/ai/src/util/notify.ts

@@ -17,6 +17,6 @@ export async function notify<EVENT>(options: {
     if (callback == null) continue;
     try {
       await callback(options.event);
-    } catch (_ignored) {}
+    } catch {}
   }
 }

packages/amazon-bedrock/src/anthropic/bedrock-anthropic-provider.ts

@@ -261,7 +261,13 @@ export function createBedrockAnthropic(
         }`,
 
       transformRequestBody: (args, betas) => {
-        const { model, stream, tool_choice, tools, ...rest } = args;
+        const {
+          model: _model,
+          stream: _stream,
+          tool_choice,
+          tools,
+          ...rest
+        } = args;
 
         const transformedToolChoice =
           tool_choice != null

packages/amazon-bedrock/src/convert-to-bedrock-chat-messages.ts

@@ -370,12 +370,6 @@ export async function convertToBedrockChatMessages(
   return { system, messages };
 }
 
-function isBedrockImageFormat(format: string): format is BedrockImageFormat {
-  return Object.values(BEDROCK_IMAGE_MIME_TYPES).includes(
-    format as BedrockImageFormat,
-  );
-}
-
 function getBedrockImageFormat(mimeType?: string): BedrockImageFormat {
   if (!mimeType) {
     throw new UnsupportedFunctionalityError({

packages/anthropic/src/anthropic-files.ts

@@ -9,15 +9,12 @@ import {
   createJsonResponseHandler,
   FetchFunction,
   lazySchema,
-  parseProviderOptions,
   postFormDataToApi,
   zodSchema,
 } from '@ai-sdk/provider-utils';
 import { z } from 'zod/v4';
 import { anthropicFailedResponseHandler } from './anthropic-error';
 
-const anthropicUploadFileProviderOptions = z.object({});
-
 const anthropicUploadFileResponseSchema = lazySchema(() =>
   zodSchema(
     z.object({
@@ -52,14 +49,7 @@ export class AnthropicFiles implements FilesV4 {
     data,
     mediaType,
     filename,
-    providerOptions,
   }: FilesV4UploadFileCallOptions): Promise<FilesV4UploadFileResult> {
-    const anthropicOptions = await parseProviderOptions({
-      provider: 'anthropic',
-      providerOptions,
-      schema: zodSchema(anthropicUploadFileProviderOptions),
-    });
-
     const fileBytes =
       data instanceof Uint8Array ? data : convertBase64ToUint8Array(data);
 

packages/codemod/src/bin/codemod.ts

@@ -6,6 +6,7 @@ import { transform } from '../lib/transform';
 import { upgrade, upgradeV4, upgradeV5, upgradeV6 } from '../lib/upgrade';
 import { TransformOptions } from '../lib/transform-options';
 
+// eslint-disable-next-line no-unused-vars
 const log = debug('codemod');
 const error = debug('codemod:error');
 debug.enable('codemod:*');

packages/codemod/src/codemods/v4/replace-token-usage-types.ts

@@ -15,9 +15,6 @@ export default createTransformer((fileInfo, api, options, context) => {
     EmbeddingTokenUsage: 'EmbeddingModelUsage',
   };
 
-  // Set to keep track of already imported new names to avoid duplicates
-  const importedNewNames = new Set<string>();
-
   // Replace imports at ImportDeclaration level
   root
     .find(j.ImportDeclaration)

packages/codemod/src/codemods/v5/rename-reasoning-to-reasoningText.ts

@@ -88,7 +88,7 @@ export default createTransformer((fileInfo, api, options, context) => {
     });
 
   // Step 2b: Look for `for...of` loops on `steps`
-  const forOfPaths = root
+  root
     .find(j.ForOfStatement)
     .filter(path => {
       const right = path.node.right;

packages/codemod/src/lib/upgrade.ts

@@ -116,7 +116,7 @@ function runCodemods(
   bar.start(modCount, 0, { codemod: 'Starting...' });
   const allErrors: TransformErrors = [];
   let notImplementedAvailable = false;
-  for (const [index, codemod] of codemods.entries()) {
+  for (const [_index, codemod] of codemods.entries()) {
     const { errors, notImplementedErrors } = transform(codemod, cwd, options, {
       logStatus: false,
     });
@@ -172,7 +172,7 @@ export function upgrade(options: TransformOptions) {
   bar.start(modCount, 0, { codemod: 'Starting...' });
   const allErrors: TransformErrors = [];
   let notImplementedAvailable = false;
-  for (const [index, codemod] of bundle.entries()) {
+  for (const [_index, codemod] of bundle.entries()) {
     const { errors, notImplementedErrors } = transform(codemod, cwd, options, {
       logStatus: false,
     });

packages/codemod/src/test/test-utils.ts

@@ -146,7 +146,7 @@ export function validateSyntax(code: string, extension: string): void {
   };
 
   // Override module resolution
-  host.resolveModuleNameLiterals = (moduleLiterals, containingFile) => {
+  host.resolveModuleNameLiterals = moduleLiterals => {
     return moduleLiterals.map(moduleLiteral => ({
       resolvedModule: {
         resolvedFileName: `${moduleLiteral.text}.d.ts`,

packages/devtools/src/integration.ts

@@ -3,11 +3,9 @@ import type {
   OnStepStartEvent,
   OnStepFinishEvent,
   OnChunkEvent,
-  OnFinishEvent,
   ObjectOnStartEvent,
   ObjectOnStepStartEvent,
   ObjectOnStepFinishEvent,
-  ObjectOnFinishEvent,
   TelemetryIntegration,
   ToolSet,
 } from 'ai';

packages/devtools/src/viewer/client/components/step-card.tsx

@@ -75,17 +75,6 @@ export function StepCard({
   const output = parseJson(step.output) as ParsedOutput | null;
   const usage = parseJson(step.usage) as ParsedUsage | null;
 
-  const nextStep = steps[index + 1];
-  const nextInput = nextStep
-    ? (parseJson(nextStep.input) as ParsedInput | null)
-    : null;
-  const toolResults: ContentPart[] =
-    nextInput?.prompt
-      ?.filter((msg: PromptMessage) => msg.role === 'tool')
-      ?.flatMap((msg: PromptMessage) =>
-        Array.isArray(msg.content) ? msg.content : [],
-      ) ?? [];
-
   const summary = getStepSummary(output, step.error);
   const isFirstStep = index === 0;
   const inputSummary = getStepInputSummary(input, isFirstStep);

packages/fal/src/fal-image-model.ts

@@ -199,7 +199,7 @@ export class FalImageModel implements ImageModelV4 {
         fal: {
           images: targetImages.map((image, index) => {
             const {
-              url,
+              url: _url,
               content_type: contentType,
               file_name: fileName,
               file_data: fileData,

packages/gateway/src/errors/create-gateway-error.ts

@@ -13,7 +13,6 @@ import {
   InferSchema,
   lazySchema,
   safeValidateTypes,
-  validateTypes,
   zodSchema,
 } from '@ai-sdk/provider-utils';
 

packages/gateway/src/errors/gateway-authentication-error.ts

@@ -37,7 +37,6 @@ export class GatewayAuthenticationError extends GatewayError {
   static createContextualError({
     apiKeyProvided,
     oidcTokenProvided,
-    message = 'Authentication failed',
     statusCode = 401,
     cause,
     generationId,

packages/gateway/src/gateway-image-model.ts

@@ -50,11 +50,7 @@ export class GatewayImageModel implements ImageModelV4 {
   > {
     const resolvedHeaders = await resolve(this.config.headers());
     try {
-      const {
-        responseHeaders,
-        value: responseBody,
-        rawValue,
-      } = await postJsonToApi({
+      const { responseHeaders, value: responseBody } = await postJsonToApi({
         url: this.getUrl(),
         headers: combineHeaders(
           resolvedHeaders,

packages/gateway/src/gateway-language-model.ts

@@ -1,7 +1,6 @@
 import type {
   LanguageModelV4,
   LanguageModelV4CallOptions,
-  SharedV4Warning,
   LanguageModelV4FilePart,
   LanguageModelV4StreamPart,
   LanguageModelV4GenerateResult,

packages/google-vertex/src/anthropic/google-vertex-anthropic-provider.ts

@@ -192,7 +192,7 @@ export function createVertexAnthropic(
         }`,
       transformRequestBody: args => {
         // Remove model from args and add anthropic version
-        const { model, ...rest } = args;
+        const { model: _model, ...rest } = args;
         return {
           ...rest,
           anthropic_version: 'vertex-2023-10-16',