JoshuaKGoldberg · Nov 9, 2026
diff --git a/.oxlintrc.json b/.oxlintrc.json
@@ -37,6 +37,7 @@
         "allow": ["URL", "URLSearchParams"]
       }
     ],
+    "typescript/no-unnecessary-type-assertion": "error",
     "jsx-a11y/interactive-supports-focus": "off",
     "unicorn/prefer-spread": "error"
   },

diff --git a/apps/games-api/src/index.test.ts b/apps/games-api/src/index.test.ts
@@ -45,7 +45,7 @@ describe("worker Sentry reporting", () => {
             Cookie: "session=synthetic-secret",
           },
         },
-      ) as Parameters<typeof worker.fetch>[0],
+      ),
       env,
       ctx,
     );

diff --git a/apps/games-api/src/leaderboard.test.ts b/apps/games-api/src/leaderboard.test.ts
@@ -19,7 +19,7 @@ function makeEnv(overrides: Record<string, unknown> = {}): Env {
   return {
     SENTRY_GAMES_READ_TOKEN: TOKEN,
     ...overrides,
-  } as unknown as Env;
+  };
 }
 
 function upstreamBody(rows: Array<[unknown, unknown]>) {

diff --git a/packages/cli/script/bench-sweep.ts b/packages/cli/script/bench-sweep.ts
@@ -75,7 +75,7 @@ function parseArgs(argv: readonly string[]): SweepArgs {
   const kneeThresholdPct = 0.03; // 3%
 
   for (let i = 0; i < argv.length; i += 1) {
-    const arg = argv[i] as string;
+    const arg = argv[i];
     const next = argv[i + 1];
     switch (arg) {
       case "--size": {

diff --git a/packages/cli/script/bench.ts b/packages/cli/script/bench.ts
@@ -195,7 +195,7 @@ function parseArgs(argv: readonly string[]): CliArgs {
   const thresholdPct = Number(process.env.BENCH_THRESHOLD ?? 0.2);
 
   for (let i = 0; i < argv.length; i += 1) {
-    const arg = argv[i] as string;
+    const arg = argv[i];
     const next = argv[i + 1];
     if (applyFlag(state, arg, next)) {
       i += 1;
@@ -477,7 +477,7 @@ async function buildOps(): Promise<OpEntry[]> {
           ".git/HEAD",
         ];
         for (let i = 0; i < 10_000; i += 1) {
-          const q = queries[i % queries.length] as string;
+          const q = queries[i % queries.length];
           stack.isIgnored(q, false);
         }
       },

diff --git a/packages/cli/script/fragment-commands.ts b/packages/cli/script/fragment-commands.ts
@@ -85,7 +85,7 @@ function parseMarker(token: Token | undefined): Marker | undefined {
 function childTokenLists(token: Token): Token[][] {
   const lists: Token[][] = [];
   if ("tokens" in token && Array.isArray(token.tokens)) {
-    lists.push(token.tokens as Token[]);
+    lists.push(token.tokens);
   }
   if (token.type === "list") {
     lists.push(token.items as Token[]);

diff --git a/packages/cli/script/generate-banner-image.ts b/packages/cli/script/generate-banner-image.ts
@@ -56,8 +56,8 @@ function gradientAt(t: number): [number, number, number] {
   const seg = clamped * (GRADIENT_ANCHORS.length - 1);
   const i = Math.min(GRADIENT_ANCHORS.length - 2, Math.floor(seg));
   const f = seg - i;
-  const a = GRADIENT_ANCHORS[i] as [number, number, number];
-  const b = GRADIENT_ANCHORS[i + 1] as [number, number, number];
+  const a = GRADIENT_ANCHORS[i];
+  const b = GRADIENT_ANCHORS[i + 1];
   return [
     Math.round(a[0] + (b[0] - a[0]) * f),
     Math.round(a[1] + (b[1] - a[1]) * f),
@@ -106,7 +106,7 @@ function encodePngBase64(mask: PNG): string {
   const model = maskModel(mask);
   const out = new PNG({ width: mask.width, height: mask.height });
   for (let y = 0; y < mask.height; y++) {
-    const [r, g, b] = palette[model.bandForRow(y)] as [number, number, number];
+    const [r, g, b] = palette[model.bandForRow(y)];
     for (let x = 0; x < mask.width; x++) {
       const i = (y * mask.width + x) * 4;
       out.data[i] = r;

diff --git a/packages/cli/script/generate-docs-sections.ts b/packages/cli/script/generate-docs-sections.ts
@@ -345,7 +345,7 @@ function extractNodeVersion(): string {
  */
 function extractDevNodeVersion(): string {
   const constraint: string | undefined =
-    (pkg as any).devEngines?.runtime?.version ?? pkg.engines?.node;
+    pkg.devEngines?.runtime?.version ?? pkg.engines?.node;
   if (!constraint) {
     throw new Error("Missing devEngines.runtime.version and engines.node");
   }

diff --git a/packages/cli/script/generate-sdk.ts b/packages/cli/script/generate-sdk.ts
@@ -168,7 +168,7 @@ function extractSdkFlags(command: Command): SdkFlagInfo[] {
 
   const flags: SdkFlagInfo[] = [];
 
-  for (const [name, def] of Object.entries(flagDefs) as [string, FlagDef][]) {
+  for (const [name, def] of Object.entries(flagDefs)) {
     if (INTERNAL_FLAGS.has(name)) {
       continue;
     }

diff --git a/packages/cli/script/lib/output-schema-fields.ts b/packages/cli/script/lib/output-schema-fields.ts
@@ -204,7 +204,7 @@ export function extractSchemaFieldPaths(schema: GenericSchema): string[] {
       }
     }
   };
-  visit(schema as unknown as ValibotSchemaNode, "");
+  visit(schema, "");
   return [...paths];
 }
 

diff --git a/packages/cli/src/commands/alert/issues/edit.ts b/packages/cli/src/commands/alert/issues/edit.ts
@@ -147,9 +147,7 @@ function applyIssueEdits(
     const actionFilters = Array.isArray(body.actionFilters)
       ? (body.actionFilters as Record<string, unknown>[])
       : [];
-    const existingFilter = actionFilters[0] as
-      | Record<string, unknown>
-      | undefined;
+    const existingFilter = actionFilters[0];
     // When the rule has no action filter yet, a partial edit (e.g. only
     // --action) must still emit a valid DataConditionGroup. Seed the same
     // defaults the create path uses so the group carries a logicType and a

diff --git a/packages/cli/src/commands/api.ts b/packages/cli/src/commands/api.ts
@@ -1354,7 +1354,7 @@ export function buildFromFields(
     // Merge field-built key=value entries into the auto-detected JSON object body
     body =
       body && typeof body === "object"
-        ? { ...(body as Record<string, unknown>), ...options.body }
+        ? { ...body, ...options.body }
         : options.body;
   }
 

diff --git a/packages/cli/src/commands/auth/default.ts b/packages/cli/src/commands/auth/default.ts
@@ -178,7 +178,7 @@ export const authDefaultCommand = buildCommand({
   async *func(this: SentryContext, flags: AuthDefaultFlags) {
     const target = resolveAuthDefaultTarget(flags);
     const command = target === "login" ? loginCommand : statusCommand;
-    const raw = getRawFunc(command as Command<SentryContext>);
+    const raw = getRawFunc(command);
     const generator = raw.call(
       this,
       flags as unknown as Record<string, unknown>,

diff --git a/packages/cli/src/commands/cli/upgrade.ts b/packages/cli/src/commands/cli/upgrade.ts
@@ -1113,7 +1113,7 @@ function startChangelogFetch(options: {
     source,
   })
     .then((result) => result ?? undefined)
-    .catch(() => undefined as undefined);
+    .catch(() => undefined);
 }
 
 /**

diff --git a/packages/cli/src/commands/local/server.ts b/packages/cli/src/commands/local/server.ts
@@ -435,13 +435,12 @@ export function buildApp(
       contentType = SENTRY_CONTENT_TYPE;
     }
     const rawEncoding = c.req.header("content-encoding");
-    const contentEncoding = (
+    const contentEncoding =
       rawEncoding === "gzip" ||
       rawEncoding === "deflate" ||
       rawEncoding === "br"
         ? rawEncoding
-        : undefined
-    ) as "gzip" | "deflate" | "br" | undefined;
+        : undefined;
     const userAgent = c.req.header("user-agent");
 
     pushToSpotlightBuffer({

diff --git a/packages/cli/src/commands/monitor/run.ts b/packages/cli/src/commands/monitor/run.ts
@@ -362,8 +362,7 @@ The wrapped command receives the \`SENTRY_MONITOR_SLUG\` environment variable.`,
               // Map signal kills to 128+N (Unix convention: e.g. 130 for
               // SIGINT, 137 for SIGKILL, 143 for SIGTERM) so CI pipelines
               // and shell scripts inspecting $? see the correct exit code.
-              const sigNum =
-                osConstants.signals[signal as keyof typeof osConstants.signals];
+              const sigNum = osConstants.signals[signal];
               resolve(128 + (sigNum ?? 1));
             } else {
               resolve(1);

diff --git a/packages/cli/src/commands/release/list.ts b/packages/cli/src/commands/release/list.ts
@@ -170,9 +170,7 @@ function formatSessionSparkline(r: SentryRelease): string {
   if (!health) {
     return "";
   }
-  const points = extractSessionPoints(
-    health.stats as Record<string, unknown> | undefined,
-  );
+  const points = extractSessionPoints(health.stats);
   if (points.length === 0) {
     return "";
   }

diff --git a/packages/cli/src/lib/api-scope.ts b/packages/cli/src/lib/api-scope.ts
@@ -124,7 +124,7 @@ function extractScopeCandidate(entry: unknown): string | undefined {
     entry &&
     typeof entry === "object" &&
     "scope" in entry &&
-    typeof (entry as { scope: unknown }).scope === "string"
+    typeof entry.scope === "string"
   ) {
     return (entry as { scope: string }).scope;
   }

diff --git a/packages/cli/src/lib/api/alerts.ts b/packages/cli/src/lib/api/alerts.ts
@@ -425,11 +425,6 @@ export async function listMetricAlertsPaginated(
       sortBy: "-id",
       cursor: options.cursor,
       per_page: options.perPage,
-    } as {
-      query?: string;
-      sortBy?: string;
-      cursor?: string;
-      per_page?: number;
     },
   });
   const { data, nextCursor } = unwrapPaginatedResult<MetricDetector[]>(
@@ -734,7 +729,7 @@ function buildDetectorBody(
     detectorBody.enabled = Number(body.status) !== 1;
   }
   if (body.owner !== undefined) {
-    detectorBody.owner = body.owner as string | null;
+    detectorBody.owner = body.owner;
   }
   return detectorBody;
 }
@@ -846,9 +841,7 @@ export async function putMetricAlertRule(
     },
     // `buildDetectorBody` returns the camelCase detector document as a plain
     // record, so cast it into the SDK's typed body.
-    body: buildDetectorBody(body) as unknown as Parameters<
-      typeof updateOrganizationDetector
-    >[0]["body"],
+    body: buildDetectorBody(body),
   });
   return unwrapResult<UpdateOrganizationDetectorResponse>(
     result,

diff --git a/packages/cli/src/lib/api/events.ts b/packages/cli/src/lib/api/events.ts
@@ -278,7 +278,7 @@ export async function listIssueEvents(
         // `per_page` is accepted at runtime but absent from the generated query
         // type, so widen via cast.
         per_page: perPage,
-      } as Parameters<typeof listOrganizationIssueEvents>[0]["query"],
+      },
     });
     return unwrapPaginatedResult<IssueEvent[]>(
       result,

diff --git a/packages/cli/src/lib/api/infrastructure.ts b/packages/cli/src/lib/api/infrastructure.ts
@@ -367,7 +367,7 @@ export function throwApiError(
   const status = response.status;
   const rawDetail =
     error && typeof error === "object" && "detail" in error
-      ? (error as { detail: unknown }).detail
+      ? error.detail
       : undefined;
   const hasUsableDetail = rawDetail !== null && rawDetail !== undefined;
   // Enrichment functions (enrich403Detail, enrich401Detail) render better

diff --git a/packages/cli/src/lib/api/issues.ts b/packages/cli/src/lib/api/issues.ts
@@ -751,7 +751,7 @@ export async function getSharedIssue(
   try {
     result = await getOrganizationSharedIssue({
       baseUrl: normalizedBase,
-      fetch: fetchUnauthenticated as unknown as typeof fetch,
+      fetch: fetchUnauthenticated,
       headers,
       parseAs: "json",
       path: { organization_id_or_slug: orgSlug, share_id: shareId },

diff --git a/packages/cli/src/lib/api/logs.ts b/packages/cli/src/lib/api/logs.ts
@@ -218,7 +218,7 @@ export async function listLogs(
           start: options.start,
           end: options.end,
           sort: toApiSort(options.sort),
-        } as Parameters<typeof listOrganizationEvents>[0]["query"],
+        },
       });
 
       const { data: raw, nextCursor } = unwrapPaginatedResult<unknown>(

diff --git a/packages/cli/src/lib/api/preprod-artifacts.ts b/packages/cli/src/lib/api/preprod-artifacts.ts
@@ -190,10 +190,7 @@ export async function downloadBuildArtifact(
   }
 
   // Stream to disk so large (hundreds-of-MB) artifacts never buffer in memory.
-  await pipeline(
-    Readable.fromWeb(response.body as Parameters<typeof Readable.fromWeb>[0]),
-    createWriteStream(destPath),
-  );
+  await pipeline(Readable.fromWeb(response.body), createWriteStream(destPath));
 }
 
 /** Optional metadata sent with a build assemble request. */

diff --git a/packages/cli/src/lib/api/projects.ts b/packages/cli/src/lib/api/projects.ts
@@ -81,10 +81,7 @@ export async function listProjects(orgSlug: string): Promise<SentryProject[]> {
     const result = await listOrganizationProjects({
       ...config,
       path: { organization_id_or_slug: orgSlug },
-      query: { cursor, per_page: API_MAX_PER_PAGE } as {
-        cursor?: string;
-        per_page?: number;
-      },
+      query: { cursor, per_page: API_MAX_PER_PAGE },
     });
     return unwrapPaginatedResult<SentryProject[]>(
       result,
@@ -138,7 +135,7 @@ export async function listProjectsPaginated(
       cursor: options.cursor,
       per_page: perPage,
       query: options.query,
-    } as { cursor?: string; per_page?: number; query?: string },
+    },
   });
 
   return unwrapPaginatedResult<SentryProject[]>(

diff --git a/packages/cli/src/lib/api/releases.ts b/packages/cli/src/lib/api/releases.ts
@@ -306,9 +306,7 @@ export async function updateRelease(
       organization_id_or_slug: orgSlug,
       version,
     },
-    body: body as unknown as Parameters<
-      typeof updateOrganizationRelease
-    >[0]["body"],
+    body: body,
   });
 
   return unwrapResult<SentryRelease>(
@@ -394,9 +392,7 @@ export async function createReleaseDeploy(
       organization_id_or_slug: orgSlug,
       version,
     },
-    body: body as unknown as Parameters<
-      typeof createOrganizationReleaseDeploy
-    >[0]["body"],
+    body: body,
   });
 
   return unwrapResult<SentryDeploy>(result, "Failed to create deploy");

diff --git a/packages/cli/src/lib/api/replays.ts b/packages/cli/src/lib/api/replays.ts
@@ -19,7 +19,6 @@ import {
   ReplayDetailsResponseSchema,
   ReplayIdsByResourceSchema,
   type ReplayListItem,
-  type ReplayListResponse,
   ReplayListResponseSchema,
   type ReplayStringProjectId,
 } from "../../types/index.js";
@@ -221,10 +220,7 @@ async function fetchReplayPage(
         start: options.start,
         end: options.end,
       },
-      schema: ReplayListResponseSchema as GenericSchema<
-        unknown,
-        ReplayListResponse
-      >,
+      schema: ReplayListResponseSchema,
     },
   );
 

diff --git a/packages/cli/src/lib/api/teams.ts b/packages/cli/src/lib/api/teams.ts
@@ -60,7 +60,7 @@ export async function listTeamsPaginated(
       cursor: options.cursor,
       per_page: options.perPage ?? 25,
       query: options.query,
-    } as { cursor?: string; per_page?: number; query?: string },
+    },
   });
 
   return unwrapPaginatedResult<SentryTeam[]>(result, "Failed to list teams");

diff --git a/packages/cli/src/lib/chunk-loader.ts b/packages/cli/src/lib/chunk-loader.ts
@@ -124,7 +124,7 @@ function suppressLoaderWarning(): void {
     return;
   }
   loaderWarningSuppressed = true;
-  const originalEmit = process.emit.bind(process) as typeof process.emit;
+  const originalEmit = process.emit.bind(process);
   process.emit = ((event: string, ...args: unknown[]) => {
     const [warning] = args;
     if (

diff --git a/packages/cli/src/lib/command.ts b/packages/cli/src/lib/command.ts
@@ -578,10 +578,7 @@ export function buildCommand<
     builderArgs.skipRcUrlCheck === true || builderArgs.auth === "dsn";
 
   // Merge global flags into the command's flag definitions.
-  const existingParams = (builderArgs.parameters ?? {}) as Record<
-    string,
-    unknown
-  >;
+  const existingParams = builderArgs.parameters ?? {};
   const existingFlags = (existingParams.flags ?? {}) as Record<string, unknown>;
 
   const { mergedFlags, commandOwnsOrg, commandOwnsProject, stripKeys } =
@@ -799,7 +796,7 @@ export function buildCommand<
       commandOwnsProject,
     );
 
-    const cleanFlags = cleanRawFlags(flags as Record<string, unknown>);
+    const cleanFlags = cleanRawFlags(flags);
     setFlagContext(cleanFlags);
     if (args.length > 0) {
       setArgsContext(args.flatMap(rawPositional));

diff --git a/packages/cli/src/lib/db/resilient.ts b/packages/cli/src/lib/db/resilient.ts
@@ -286,7 +286,7 @@ export function createResilientDatabase(
 ): Database {
   const originalQuery = db.query.bind(db);
 
-  return new Proxy(db as object, {
+  return new Proxy(db, {
     get(target, prop) {
       if (prop === "query") {
         return (sql: string) => {
@@ -316,5 +316,5 @@ export function createResilientDatabase(
       }
       return value;
     },
-  }) as Database;
+  });
 }
diff --git a/packages/cli/src/lib/db/utils.ts b/packages/cli/src/lib/db/utils.ts
@@ -63,7 +63,7 @@ export function upsert<T extends Record<string, SqlValue>>(
   options: UpsertOptions<T> = {},
 ): SqlQuery {
   const columns = Object.keys(data);
-  const values = Object.values(data) as SqlValue[];
+  const values = Object.values(data);
 
   if (columns.length === 0) {
     throw new Error("upsert: data object must have at least one column");
-Original file line number
+Diff line change
@@ Expand Up / @@ -45,7 +45,7 @@ describe("worker Sentry reporting", () => { @@
                 Cookie: "session=synthetic-secret",
               },
             },
-          ) as Parameters<typeof worker.fetch>[0],
+          ),
           env,
           ctx,
         );
@@ Expand Down @@