Serialization

Server function arguments and return values are serialized so they can travel between server and client.

Configuration

Set the mode on solidStart() in vite.config.ts:

import { defineConfig } from "vite";
import { solidStart } from "@solidjs/start/config";

export default defineConfig({
  plugins: [
    solidStart({
      serialization: { mode: "json" },
    }),
  ],
});

Modes

• json: deserializes with JSON.parse on the client. It avoids eval, so it fits a strict CSP. This is the default.
• js: a smaller binary format that needs eval on the client, which a strong CSP blocks.

If your app enforces a Content Security Policy, keep json.

Related

• Data fetching
• Data mutation