bug: adapter-cloudflare: create-cloudflare app.d.ts (platform.ctx) mismatches emulation (platform.context)

[hjaber]

Describe the bug

Cloudflare now recommends Workers over Pages and their March 2025 SDK for Cloudflare Workers renamed the execution context for Workers to platform.ctx.

The latest npm create cloudflare@latest -- --framework=svelte command generates an app.d.ts file that defines platform.ctx: ExecutionContext within App.Platform.

// Relevant part of app.d.ts generated by create-cloudflare
declare global {
    namespace App {
        interface Platform {
            env: Env;
            cf: CfProperties;
            ctx: ExecutionContext; // <-- Uses ctx & not context found within Cloudflare Pages
        }
    }
}

@sveltejs/adapter-cloudflarestill exposes **only**platform.context`:

const platform = {
  // …
  context: proxy.ctx   // old name
};

Result: event.platform.ctx is undefined; fresh projects fail at runtime and in typescript checks.

Many solutions but need Sveltekit & Cloudflare to be in consensus

Could provide both properties so the same code runs on:

• Workers (ctx is canonical)
• Pages Functions / legacy Workers (context)

Proposed fix

Alias the field in runtime & emulator:

const platform = {
  env: proxy.env,
  cf: proxy.cf,
  caches: proxy.caches,
  ctx: proxy.ctx,
  context: proxy.ctx // temporary alias
};

Reproduction

npm create cloudflare@latest -- my-svelte-app --framework=svelte generates src/app.d.ts with

  // app.d.ts
  interface Platform {
    env: Env;
    cf: CfProperties;
    ctx: ExecutionContext; // ctx not context
  }

System Info

System:
    OS: macOS 15.5
    CPU: (8) arm64 Apple M2
    Memory: 212.58 MB / 24.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 23.6.1 - /usr/local/bin/node
    npm: 11.1.0 - /usr/local/bin/npm
    bun: 1.2.15 - ~/.bun/bin/bun
  Browsers:
    Brave Browser: 137.1.79.118
    Chrome: 136.0.7103.114
    Safari: 18.5

Severity

annoyance