feat: Avoid usage of any

packages/core/src/fetch.ts

@@ -109,11 +109,10 @@ export function instrumentFetchRequest(
   spans[span.spanContext().spanId] = span;
 
   if (shouldAttachHeaders(handlerData.fetchData.url)) {
-    const request: string | Request = handlerData.args[0];
-
     // Shallow clone the options object to avoid mutating the original user-provided object
     // Examples: users re-using same options object for multiple fetch calls, frozen objects
-    const options: { [key: string]: unknown } = { ...(handlerData.args[1] || {}) };
+    const request = handlerData.args[0] as string | Request;
+    const options: Record<string, unknown> = { ...((handlerData.args[1] || {}) as Record<string, unknown>) };
 
     const headers = _addTracingHeadersToFetchRequest(
       request,

packages/core/src/integrations/supabase.ts

@@ -10,6 +10,7 @@ import { defineIntegration } from '../integration';
 import { SEMANTIC_ATTRIBUTE_SENTRY_OP, SEMANTIC_ATTRIBUTE_SENTRY_ORIGIN } from '../semanticAttributes';
 import { setHttpStatus, SPAN_STATUS_ERROR, SPAN_STATUS_OK, startSpan } from '../tracing';
 import type { IntegrationFn } from '../types-hoist/integration';
+import type { SpanAttributes } from '../types-hoist/span';
 import { debug } from '../utils/debug-logger';
 import { isPlainObject } from '../utils/is';
 import { addExceptionMechanism } from '../utils/misc';
@@ -66,7 +67,8 @@ export const FILTER_MAPPINGS = {
   not: 'not',
 };
 
-export const DB_OPERATIONS_TO_INSTRUMENT = ['select', 'insert', 'upsert', 'update', 'delete'];
+export const DB_OPERATIONS_TO_INSTRUMENT = ['select', 'insert', 'upsert', 'update', 'delete'] as const;
+type DBOperation = (typeof DB_OPERATIONS_TO_INSTRUMENT)[number];
 
 type AuthOperationFn = (...args: unknown[]) => Promise<unknown>;
 type AuthOperationName = (typeof AUTH_OPERATIONS_TO_INSTRUMENT)[number];
@@ -88,7 +90,7 @@ export interface PostgRESTFilterBuilder {
   headers: Record<string, string>;
   url: URL;
   schema: string;
-  body: any;
+  body: unknown;
 }
 
 export interface SupabaseResponse {
@@ -124,7 +126,7 @@ export interface SupabaseClientConstructor {
 export interface PostgRESTProtoThenable {
   then: <T>(
     onfulfilled?: ((value: T) => T | PromiseLike<T>) | null,
-    onrejected?: ((reason: any) => T | PromiseLike<T>) | null,
+    onrejected?: ((reason: unknown) => T | PromiseLike<T>) | null,
   ) => Promise<T>;
 }
 
@@ -154,7 +156,7 @@ function isInstrumented<T>(fn: T): boolean | undefined {
  * @param headers - The request headers
  * @returns The database operation type ('select', 'insert', 'upsert', 'update', or 'delete')
  */
-export function extractOperation(method: string, headers: Record<string, string> = {}): string {
+export function extractOperation(method: string, headers: Record<string, string> = {}): DBOperation | '<unknown-op>' {
   switch (method) {
     case 'GET': {
       return 'select';
@@ -337,7 +339,7 @@ function instrumentPostgRESTFilterBuilder(PostgRESTFilterBuilder: PostgRESTFilte
         const typedThis = thisArg as PostgRESTFilterBuilder;
         const operation = extractOperation(typedThis.method, typedThis.headers);
 
-        if (!operations.includes(operation)) {
+        if (!operations.includes(operation as DBOperation)) {
           return Reflect.apply(target, thisArg, argumentsList);
         }
 
@@ -368,7 +370,7 @@ function instrumentPostgRESTFilterBuilder(PostgRESTFilterBuilder: PostgRESTFilte
           ' ',
         )} from(${table})`;
 
-        const attributes: Record<string, any> = {
+        const attributes: SpanAttributes = {
           'db.table': table,
           'db.schema': typedThis.schema,
           'db.url': typedThis.url.origin,
@@ -384,7 +386,11 @@ function instrumentPostgRESTFilterBuilder(PostgRESTFilterBuilder: PostgRESTFilte
         }
 
         if (Object.keys(body).length) {
-          attributes['db.body'] = body;
+          try {
+            attributes['db.body'] = JSON.stringify(body);
+          } catch {
+            // could not stringify body
+          }
         }
 
         return startSpan(
@@ -479,17 +485,19 @@ function instrumentPostgRESTFilterBuilder(PostgRESTFilterBuilder: PostgRESTFilte
   markAsInstrumented((PostgRESTFilterBuilder.prototype as unknown as PostgRESTProtoThenable).then);
 }
 
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+type BuilderPrototype = Record<DBOperation, (...args: any[]) => any>;
+
 function instrumentPostgRESTQueryBuilder(PostgRESTQueryBuilder: new () => PostgRESTQueryBuilder): void {
   // We need to wrap _all_ operations despite them sharing the same `PostgRESTFilterBuilder`
   // constructor, as we don't know which method will be called first, and we don't want to miss any calls.
   for (const operation of DB_OPERATIONS_TO_INSTRUMENT) {
-    if (isInstrumented((PostgRESTQueryBuilder.prototype as Record<string, any>)[operation])) {
+    if (isInstrumented((PostgRESTQueryBuilder.prototype as BuilderPrototype)[operation])) {
       continue;
     }
 
-    type PostgRESTOperation = keyof Pick<PostgRESTQueryBuilder, 'select' | 'insert' | 'upsert' | 'update' | 'delete'>;
-    (PostgRESTQueryBuilder.prototype as Record<string, any>)[operation as PostgRESTOperation] = new Proxy(
-      (PostgRESTQueryBuilder.prototype as Record<string, any>)[operation as PostgRESTOperation],
+    (PostgRESTQueryBuilder.prototype as BuilderPrototype)[operation] = new Proxy(
+      (PostgRESTQueryBuilder.prototype as BuilderPrototype)[operation],
       {
         apply(target, thisArg, argumentsList) {
           const rv = Reflect.apply(target, thisArg, argumentsList);
@@ -504,7 +512,7 @@ function instrumentPostgRESTQueryBuilder(PostgRESTQueryBuilder: new () => PostgR
       },
     );
 
-    markAsInstrumented((PostgRESTQueryBuilder.prototype as Record<string, any>)[operation]);
+    markAsInstrumented((PostgRESTQueryBuilder.prototype as BuilderPrototype)[operation]);
   }
 }
 
@@ -531,6 +539,7 @@ const _supabaseIntegration = ((supabaseClient: unknown) => {
   };
 }) satisfies IntegrationFn;
 
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
 export const supabaseIntegration = defineIntegration((options: { supabaseClient: any }) => {
   return _supabaseIntegration(options.supabaseClient);
 }) satisfies IntegrationFn;

packages/core/src/profiling.ts

@@ -1,3 +1,4 @@
+import type { Client } from './client';
 import { getClient } from './currentScopes';
 import { DEBUG_BUILD } from './debug-build';
 import type { Profiler, ProfilingIntegration } from './types-hoist/profiling';

packages/core/src/types-hoist/breadcrumb.ts

@@ -52,8 +52,10 @@ export interface Breadcrumb {
    *
    * @summary Arbitrary data associated with this breadcrumb.
    */
+  // Note: we cannot use Record<string, unknown> here because it's not compatible with interface data types
+  // See: https://github.com/microsoft/TypeScript/issues/15300
   // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  data?: { [key: string]: any };
+  data?: Record<string, any>;
 
   /**
    * The format is a numeric (integer or float) value representing
@@ -71,6 +73,8 @@ export interface Breadcrumb {
 
 /** JSDoc */
 export interface BreadcrumbHint {
+  // Note: we cannot use unknown here because it's not compatible with interface data types
+  // See: https://github.com/microsoft/TypeScript/issues/15300
   // eslint-disable-next-line @typescript-eslint/no-explicit-any
   [key: string]: any;
 }
@@ -92,8 +96,7 @@ export interface XhrBreadcrumbData {
 }
 
 export interface FetchBreadcrumbHint {
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  input: any[];
+  input: unknown[];
   data?: unknown;
   response?: unknown;
   startTimestamp: number;

packages/core/src/types-hoist/context.ts

@@ -1,7 +1,7 @@
 import type { FeatureFlag } from '../utils/featureFlags';
 import type { SpanLinkJSON } from './link';
 import type { Primitive } from './misc';
-import type { SpanOrigin } from './span';
+import type { SpanAttributes, SpanOrigin } from './span';
 
 export type Context = Record<string, unknown>;
 
@@ -99,8 +99,7 @@ export interface ResponseContext extends Record<string, unknown> {
 }
 
 export interface TraceContext extends Record<string, unknown> {
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  data?: { [key: string]: any };
+  data?: SpanAttributes;
   op?: string;
   parent_span_id?: string;
   span_id: string;

packages/core/src/types-hoist/error.ts

@@ -2,7 +2,5 @@
  * Just an Error object with arbitrary attributes attached to it.
  */
 export interface ExtendedError extends Error {
-  // TODO: fix in v11, convert any to unknown
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  [key: string]: any;
+  [key: string]: unknown;
 }

packages/core/src/types-hoist/event.ts

@@ -83,7 +83,6 @@ export interface EventHint {
   syntheticException?: Error | null;
   originalException?: unknown;
   attachments?: Attachment[];
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  data?: any;
+  data?: unknown;
   integrations?: string[];
 }

packages/core/src/types-hoist/feedback/config.ts

@@ -1,4 +1,5 @@
 import type { Primitive } from '../misc';
+import type { User } from '../user';
 import type { FeedbackFormData } from './form';
 import type { FeedbackTheme } from './theme';
 
@@ -53,8 +54,8 @@ export interface FeedbackGeneralConfiguration {
    * The value of the email/name keys represent the properties of your user context.
    */
   useSentryUser: {
-    email: string;
-    name: string;
+    email: keyof User;
+    name: keyof User;
   };
 
   /**

packages/core/src/types-hoist/instrument.ts

@@ -47,8 +47,7 @@ interface SentryFetchData {
 }
 
 export interface HandlerDataFetch {
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  args: any[];
+  args: unknown[];
   fetchData: SentryFetchData; // This data is among other things dumped directly onto the fetch breadcrumb data
   startTimestamp: number;
   endTimestamp?: number;
@@ -75,8 +74,7 @@ export interface HandlerDataDom {
 
 export interface HandlerDataConsole {
   level: ConsoleLevel;
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  args: any[];
+  args: unknown[];
 }
 
 export interface HandlerDataHistory {

packages/core/src/types-hoist/misc.ts

@@ -4,9 +4,7 @@ import type { QueryParams } from './request';
  * Data extracted from an incoming request to a node server
  */
 export interface ExtractedNodeRequestData {
-  // TODO: fix in v11, convert any to unknown
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  [key: string]: any;
+  [key: string]: unknown;
 
   /** Specific headers from the request */
   headers?: { [key: string]: string };

packages/core/src/types-hoist/polymorphics.ts

@@ -50,15 +50,13 @@ type NextjsRequest = NodeRequest & {
     [key: string]: string;
   };
   query?: {
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any
-    [key: string]: any;
+    [key: string]: unknown;
   };
 };
 
 type ExpressRequest = NodeRequest & {
   baseUrl?: string;
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  body?: string | { [key: string]: any };
+  body?: string | { [key: string]: unknown };
   host?: string;
   hostname?: string;
   ip?: string;
@@ -72,12 +70,10 @@ type ExpressRequest = NodeRequest & {
     ];
   };
   query?: {
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any
-    [key: string]: any;
+    [key: string]: unknown;
   };
   user?: {
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any
-    [key: string]: any;
+    [key: string]: unknown;
   };
   _reconstructedRoute?: string;
 };

packages/core/src/types-hoist/samplingcontext.ts

@@ -6,9 +6,7 @@ import type { SpanAttributes } from './span';
  * Context data passed by the user when starting a transaction, to be used by the tracesSampler method.
  */
 export interface CustomSamplingContext {
-  // TODO: fix in v11, convert any to unknown
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  [key: string]: any;
+  [key: string]: unknown;
 }
 
 /**

packages/core/src/types-hoist/stackframe.ts

@@ -13,11 +13,7 @@ export interface StackFrame {
   in_app?: boolean;
   instruction_addr?: string;
   addr_mode?: string;
-  // TODO: fix in v11, convert any to unknown
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  vars?: { [key: string]: any };
+  vars?: { [key: string]: unknown };
   debug_id?: string;
-  // TODO: fix in v11, convert any to unknown
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  module_metadata?: any;
+  module_metadata?: unknown;
 }

packages/core/src/types-hoist/user.ts

@@ -2,9 +2,7 @@
  * An interface describing a user of an application or a handled request.
  */
 export interface User {
-  // TODO: fix in v11, convert any to unknown
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  [key: string]: any;
+  [key: string]: unknown;
   id?: string | number;
   ip_address?: string | null;
   email?: string;

packages/core/src/utils/aggregate-errors.ts

@@ -55,16 +55,17 @@ function aggregateExceptionsFromError(
   let newExceptions = [...prevExceptions];
 
   // Recursively call this function in order to walk down a chain of errors
-  if (isInstanceOf(error[key], Error)) {
+  const errorValue = error[key];
+  if (isInstanceOf(errorValue, Error)) {
     applyExceptionGroupFieldsForParentException(exception, exceptionId);
-    const newException = exceptionFromErrorImplementation(parser, error[key] as Error);
+    const newException = exceptionFromErrorImplementation(parser, errorValue);
     const newExceptionId = newExceptions.length;
     applyExceptionGroupFieldsForChildException(newException, key, newExceptionId, exceptionId);
     newExceptions = aggregateExceptionsFromError(
       exceptionFromErrorImplementation,
       parser,
       limit,
-      error[key] as ExtendedError,
+      errorValue as ExtendedError,
       key,
       [newException, ...newExceptions],
       newException,
@@ -75,7 +76,7 @@ function aggregateExceptionsFromError(
   // This will create exception grouping for AggregateErrors
   // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/AggregateError
   if (Array.isArray(error.errors)) {
-    error.errors.forEach((childError, i) => {
+    error.errors.forEach((childError: unknown, i) => {
       if (isInstanceOf(childError, Error)) {
         applyExceptionGroupFieldsForParentException(exception, exceptionId);
         const newException = exceptionFromErrorImplementation(parser, childError as Error);

packages/core/src/utils/eventbuilder.ts

@@ -156,7 +156,7 @@ export function eventFromUnknownInput(
   exception: unknown,
   hint?: EventHint,
 ): Event {
-  const providedMechanism: Mechanism | undefined = hint?.data && (hint.data as { mechanism: Mechanism }).mechanism;
+  const providedMechanism = (hint?.data as { mechanism?: Mechanism })?.mechanism;
   const mechanism: Mechanism = providedMechanism || {
     handled: true,
     type: 'generic',

packages/core/src/utils/is.ts

@@ -180,9 +180,7 @@ export function isSyntheticEvent(wat: unknown): boolean {
  * @param base A constructor to be used in a check.
  * @returns A boolean representing the result.
  */
-// TODO: fix in v11, convert any to unknown
-// export function isInstanceOf<T>(wat: unknown, base: { new (...args: any[]): T }): wat is T {
-export function isInstanceOf<T>(wat: any, base: any): wat is T {
+export function isInstanceOf<T extends new (...args: any) => any>(wat: any, base: T): wat is InstanceType<T> {
   try {
     return wat instanceof base;
   } catch {

packages/eslint-config-sdk/src/base.js

@@ -113,6 +113,9 @@ module.exports = {
 
         // We do not care about empty functions
         '@typescript-eslint/no-empty-function': 'off',
+
+        // Disallow (instead of warn) for usage of any.
+        '@typescript-eslint/no-explicit-any': 'error',
       },
     },
     {