fix: regression affecting replayed runs with superjson payloads

apps/webapp/app/v3/replayTask.ts

@@ -9,11 +9,12 @@ export const ReplayRunData = z
       .optional()
       .transform((val, ctx) => {
         if (!val) {
-          return {};
+          return "{}";
         }
 
         try {
-          return JSON.parse(val);
+          JSON.parse(val);
+          return val;
         } catch {
           ctx.addIssue({
             code: z.ZodIssueCode.custom,

apps/webapp/app/v3/services/replayTaskRun.server.ts

@@ -2,18 +2,19 @@ import {
   type MachinePresetName,
   conditionallyImportPacket,
   parsePacket,
+  stringifyIO,
 } from "@trigger.dev/core/v3";
 import { type TaskRun } from "@trigger.dev/database";
 import { findEnvironmentById } from "~/models/runtimeEnvironment.server";
-import { getTagsForRunId } from "~/models/taskRunTag.server";
 import { logger } from "~/services/logger.server";
 import { BaseService } from "./baseService.server";
 import { OutOfEntitlementError, TriggerTaskService } from "./triggerTask.server";
 import { type RunOptionsData } from "../testTask";
+import { replaceSuperJsonPayload } from "@trigger.dev/core/v3/utils/ioSerialization";
 
 type OverrideOptions = {
   environmentId?: string;
-  payload?: unknown;
+  payload?: string;
   metadata?: unknown;
   bulkActionId?: string;
 } & RunOptionsData;
@@ -36,7 +37,15 @@ export class ReplayTaskRunService extends BaseService {
       taskRunFriendlyId: existingTaskRun.friendlyId,
     });
 
-    const payload = overrideOptions.payload ?? (await this.getExistingPayload(existingTaskRun));
+    const payloadPacket = await this.overrideExistingPayloadPacket(
+      existingTaskRun,
+      overrideOptions.payload
+    );
+    const parsedPayload =
+      payloadPacket.dataType === "application/json"
+        ? await parsePacket(payloadPacket)
+        : payloadPacket.data;
+    const payloadType = payloadPacket.dataType;
     const metadata = overrideOptions.metadata ?? (await this.getExistingMetadata(existingTaskRun));
     const tags = overrideOptions.tags ?? existingTaskRun.runTags;
 
@@ -53,8 +62,9 @@ export class ReplayTaskRunService extends BaseService {
         existingTaskRun.taskIdentifier,
         authenticatedEnvironment,
         {
-          payload,
+          payload: parsedPayload,
           options: {
+            payloadType,
             queue: taskQueue
               ? {
                   name: taskQueue.name,
@@ -108,15 +118,23 @@ export class ReplayTaskRunService extends BaseService {
     }
   }
 
-  private async getExistingPayload(existingTaskRun: TaskRun) {
-    const existingPayloadPacket = await conditionallyImportPacket({
-      data: existingTaskRun.payload,
+  private async overrideExistingPayloadPacket(
+    existingTaskRun: TaskRun,
+    stringifiedPayloadOverride: string | undefined
+  ) {
+    if (stringifiedPayloadOverride && existingTaskRun.payloadType === "application/super+json") {
+      const newPayload = await replaceSuperJsonPayload(
+        existingTaskRun.payload,
+        stringifiedPayloadOverride
+      );
+
+      return stringifyIO(newPayload);
+    }
+
+    return conditionallyImportPacket({
+      data: stringifiedPayloadOverride ?? existingTaskRun.payload,
       dataType: existingTaskRun.payloadType,
     });
-
-    return existingPayloadPacket.dataType === "application/json"
-      ? await parsePacket(existingPayloadPacket)
-      : existingPayloadPacket.data;
   }
 
   private async getExistingMetadata(existingTaskRun: TaskRun) {

packages/core/package.json

@@ -188,6 +188,7 @@
     "execa": "^8.0.1",
     "humanize-duration": "^3.27.3",
     "jose": "^5.4.0",
+    "lodash.get": "^4.4.2",
     "nanoid": "3.3.8",
     "prom-client": "^15.1.0",
     "socket.io": "4.7.4",
@@ -206,6 +207,7 @@
     "@epic-web/test-server": "^0.1.0",
     "@trigger.dev/database": "workspace:*",
     "@types/humanize-duration": "^3.27.1",
+    "@types/lodash.get": "^4.4.9",
     "@types/readable-stream": "^4.0.14",
     "ai": "^3.4.33",
     "defu": "^6.1.4",

packages/core/src/v3/utils/ioSerialization.ts

@@ -12,6 +12,7 @@ import { SemanticInternalAttributes } from "../semanticInternalAttributes.js";
 import { TriggerTracer } from "../tracer.js";
 import { zodfetch } from "../zodfetch.js";
 import { flattenAttributes } from "./flattenAttributes.js";
+import get from "lodash.get";
 
 export type IOPacket = {
   data?: string | undefined;
@@ -505,13 +506,46 @@ function safeJsonParse(value: string): any {
   }
 }
 
+/**
+ * Replaces the data in a SuperJSON-serialized string with new payload data while preserving
+ * the original type metadata (Dates, BigInts, Sets, Maps, etc.).
+ *
+ * It is primarily useful for our run replay functionality where we want to preserve the original
+ * type metadata for the new payload.
+ *
+ * Note that `undefined` type metadata is ignored when the corresponding field is overriden in the
+ * new payload, i.e., fields which were previously undefined in the original payload are restored into
+ * the primitive type they have in the new payload, instead of `undefined`.
+ * This is a workaround for https://github.com/triggerdotdev/trigger.dev/issues/1968.
+ *
+ * @param original - A SuperJSON-serialized string containing the original data with type metadata
+ * @param newPayload - A JSON string containing the new data to replace the original payload
+ * @returns The deserialized object with new data but original type metadata preserved
+ *
+ * @throws {Error} If the newPayload is not valid JSON
+ */
 export async function replaceSuperJsonPayload(original: string, newPayload: string) {
   const superjson = await loadSuperJSON();
   const originalObject = superjson.parse(original);
+  const newPayloadObject = JSON.parse(newPayload);
   const { meta } = superjson.serialize(originalObject);
 
+  if (meta?.values) {
+    const originalUndefinedKeys = Object.entries(meta.values)
+      .filter(([, value]) => Array.isArray(value) && value.at(0) === "undefined")
+      .map(([key]) => key);
+
+    const overridenUndefinedKeys = originalUndefinedKeys.filter(
+      (key) => get(newPayloadObject, key) !== undefined
+    );
+
+    overridenUndefinedKeys.forEach((key) => {
+      delete (meta.values as Record<string, any>)[key];
+    });
+  }
+
   const newSuperJson = {
-    json: JSON.parse(newPayload) as any,
+    json: newPayloadObject,
     meta,
   };
 

packages/core/test/ioSerialization.test.ts

@@ -0,0 +1,191 @@
+import { replaceSuperJsonPayload } from "../src/v3/utils/ioSerialization.js";
+
+describe("ioSerialization", () => {
+  describe("replaceSuperJsonPayload", () => {
+    it("should replace simple JSON payload while preserving SuperJSON metadata", async () => {
+      const originalData = {
+        name: "John",
+        age: 30,
+        date: new Date("2023-01-01"),
+      };
+
+      const superjson = await import("superjson");
+      const originalSerialized = superjson.stringify(originalData);
+
+      const newPayloadJson = JSON.stringify({
+        name: "Jane",
+        surname: "Doe",
+        age: 25,
+        date: "2023-02-01T00:00:00.000Z",
+      });
+
+      const result = (await replaceSuperJsonPayload(originalSerialized, newPayloadJson)) as any;
+
+      expect(result.name).toBe("Jane");
+      expect(result.surname).toBe("Doe");
+      expect(result.age).toBe(25);
+      expect(result.date).toBeInstanceOf(Date);
+      expect(result.date.toISOString()).toBe("2023-02-01T00:00:00.000Z");
+    });
+
+    // related to issue https://github.com/triggerdotdev/trigger.dev/issues/1968
+    it("should ignore original undefined type metadata for overriden fields", async () => {
+      const originalData = {
+        name: "John",
+        age: 30,
+        date: new Date("2023-01-01"),
+        country: undefined,
+        settings: {
+          theme: undefined,
+        },
+      };
+
+      const superjson = await import("superjson");
+      const originalSerialized = superjson.stringify(originalData);
+
+      const newPayloadJson = JSON.stringify({
+        name: "Jane",
+        surname: "Doe",
+        age: 25,
+        date: "2023-02-01T00:00:00.000Z",
+        country: "US",
+        settings: {
+          theme: "dark",
+        },
+      });
+
+      const result = (await replaceSuperJsonPayload(originalSerialized, newPayloadJson)) as any;
+
+      expect(result.name).toBe("Jane");
+      expect(result.surname).toBe("Doe");
+      expect(result.country).toBe("US");
+      expect(result.settings.theme).toBe("dark");
+      expect(result.age).toBe(25);
+      expect(result.date).toBeInstanceOf(Date);
+      expect(result.date.toISOString()).toBe("2023-02-01T00:00:00.000Z");
+    });
+
+    it("should preserve BigInt type metadata", async () => {
+      const originalData = {
+        id: BigInt(123456789),
+        count: 42,
+      };
+
+      const superjson = await import("superjson");
+      const originalSerialized = superjson.stringify(originalData);
+
+      const newPayloadJson = JSON.stringify({
+        id: "987654321",
+        count: 100,
+      });
+
+      const result = (await replaceSuperJsonPayload(originalSerialized, newPayloadJson)) as any;
+
+      expect(result.id).toBe(BigInt(987654321));
+      expect(typeof result.id).toBe("bigint");
+      expect(result.count).toBe(100);
+    });
+
+    it("should preserve nested type metadata", async () => {
+      const originalData = {
+        user: {
+          id: BigInt(123),
+          createdAt: new Date("2023-01-01"),
+          settings: {
+            theme: "dark",
+            updatedAt: new Date("2023-01-01"),
+          },
+        },
+        metadata: {
+          version: 1,
+        },
+      };
+
+      const superjson = await import("superjson");
+      const originalSerialized = superjson.stringify(originalData);
+
+      const newPayloadJson = JSON.stringify({
+        user: {
+          id: "456",
+          createdAt: "2023-06-01T00:00:00.000Z",
+          settings: {
+            theme: "light",
+            updatedAt: "2023-06-01T00:00:00.000Z",
+          },
+        },
+        metadata: {
+          version: 2,
+        },
+      });
+
+      const result = (await replaceSuperJsonPayload(originalSerialized, newPayloadJson)) as any;
+
+      expect(result.user.id).toBe(BigInt(456));
+      expect(result.user.createdAt).toBeInstanceOf(Date);
+      expect(result.user.createdAt.toISOString()).toBe("2023-06-01T00:00:00.000Z");
+      expect(result.user.settings.theme).toBe("light");
+      expect(result.user.settings.updatedAt).toBeInstanceOf(Date);
+      expect(result.user.settings.updatedAt.toISOString()).toBe("2023-06-01T00:00:00.000Z");
+      expect(result.metadata.version).toBe(2);
+    });
+
+    it("should preserve Set type metadata", async () => {
+      const originalData = {
+        tags: new Set(["tag1", "tag2"]),
+        name: "test",
+      };
+
+      const superjson = await import("superjson");
+      const originalSerialized = superjson.stringify(originalData);
+
+      const newPayloadJson = JSON.stringify({
+        tags: ["tag3", "tag4", "tag5"],
+        name: "updated",
+      });
+
+      const result = (await replaceSuperJsonPayload(originalSerialized, newPayloadJson)) as any;
+
+      expect(result.tags).toBeInstanceOf(Set);
+      expect(Array.from(result.tags)).toEqual(["tag3", "tag4", "tag5"]);
+      expect(result.name).toBe("updated");
+    });
+
+    it("should preserve Map type metadata", async () => {
+      const originalData = {
+        mapping: new Map([
+          ["key1", "value1"],
+          ["key2", "value2"],
+        ]),
+        name: "test",
+      };
+
+      const superjson = await import("superjson");
+      const originalSerialized = superjson.stringify(originalData);
+
+      const newPayloadJson = JSON.stringify({
+        mapping: [
+          ["key3", "value3"],
+          ["key4", "value4"],
+        ],
+        name: "updated",
+      });
+
+      const result = (await replaceSuperJsonPayload(originalSerialized, newPayloadJson)) as any;
+
+      expect(result.mapping).toBeInstanceOf(Map);
+      expect(result.mapping.get("key3")).toBe("value3");
+      expect(result.mapping.get("key4")).toBe("value4");
+      expect(result.name).toBe("updated");
+    });
+
+    it("should throw error for invalid JSON payload", async () => {
+      const originalData = { name: "test" };
+
+      const superjson = await import("superjson");
+      const originalSerialized = superjson.stringify(originalData);
+      const invalidPayload = "{ invalid json }";
+
+      await expect(replaceSuperJsonPayload(originalSerialized, invalidPayload)).rejects.toThrow();
+    });
+  });
+});