Pin zod-to-json-schema version

[bracesproul]

Closes #3340

Steps to reproduce.

Using a nextjs app create a new api route api/test/route.ts

Paste this code inside:

import { DynamicStructuredTool, formatToOpenAITool } from "langchain/tools";

import { z } from "zod";

export const runtime = "edge";

export async function GET(request: Request) {
  const imageTool = new DynamicStructuredTool({
    name: "get_current_weather",
    description: "Get the current weather in a given location",
    func: async ({ location }) => {
      if (location.toLowerCase().includes("tokyo")) {
        return JSON.stringify({ location, temperature: "10", unit: "celsius" });
      } else if (location.toLowerCase().includes("san francisco")) {
        return JSON.stringify({
          location,
          temperature: "72",
          unit: "fahrenheit",
        });
      } else {
        return JSON.stringify({ location, temperature: "22", unit: "celsius" });
      }
    },
    schema: z.object({
      location: z
        .string()
        .describe("The city and state, e.g. San Francisco, CA"),
      unit: z.enum(["celsius", "fahrenheit"]),
    }),
  });
  return new Response(JSON.stringify(formatToOpenAITool(imageTool)), {
    headers: { "Content-Type": "text/html; charset=utf-8" },
  });
}

From the client create a new function and interactable element which you can use to invoke:

  const testZodJsonSchemaBug = async () => {
    const response = await fetch('/api/test', {
      method: "GET"
    })
  }

  return (
    <div
      onClick={testZodJsonSchemaBug}
      className="w-[100px] h-[100px] bg-red-500">
        <p className="text-xl text-white">Click me!</p>
    </div>
  );

Start up a dev server and click the box, your terminal should then log an error which looks like this:

 ⨯ Error [RangeError]: Maximum call stack size exceeded
    at Module.zodToJsonSchema (webpack-internal:///(rsc)/./node_modules/zod-to-json-schema/dist/esm/index.js:43:107)
    at Module.zodToJsonSchema (webpack-internal:///(rsc)/./node_modules/zod-to-json-schema/dist/esm/index.js:43:107)
    at Module.zodToJsonSchema (webpack-internal:///(rsc)/./node_modules/zod-to-json-schema/dist/esm/index.js:43:107)
    at Module.zodToJsonSchema (webpack-internal:///(rsc)/./node_modules/zod-to-json-schema/dist/esm/index.js:43:107)
    at Module.zodToJsonSchema (webpack-internal:///(rsc)/./node_modules/zod-to-json-schema/dist/esm/index.js:43:107)
    at Module.zodToJsonSchema (webpack-internal:///(rsc)/./node_modules/zod-to-json-schema/dist/esm/index.js:43:107)
    at Module.zodToJsonSchema (webpack-internal:///(rsc)/./node_modules/zod-to-json-schema/dist/esm/index.js:43:107)
    at Module.zodToJsonSchema (webpack-internal:///(rsc)/./node_modules/zod-to-json-schema/dist/esm/index.js:43:107)
    at Module.zodToJsonSchema (webpack-internal:///(rsc)/./node_modules/zod-to-json-schema/dist/esm/index.js:43:107)
    at Module.zodToJsonSchema (webpack-internal:///(rsc)/./node_modules/zod-to-json-schema/dist/esm/index.js:43:107)```

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[dosubot]

Great work on the PR! I've noticed a change in the devDependencies section of the package.json file, specifically the "zod-to-json-schema" package version has been updated. This comment is to flag the change for maintainers to review.