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TypeError: Value of "this" must be of type SubtleCrypto

See original GitHub issue

When I run this simple code, it throws an error when running from miniflare. The same code works fine running from Cloudflare (or wrangler dev without the --local flag).

Code:

export default {
  async fetch(request, env, ctx) {
    const secret = new TextEncoder().encode('test')
    const key = await crypto.subtle.importKey('raw', secret, { name: 'HMAC', hash: { name: 'SHA-512' } }, false, [
      'sign',
      'verify',
    ])

    return new Response(JSON.stringify(key), { status: 200 })
  },
}

Error:

TypeError: Value of "this" must be of type SubtleCrypto
    at new NodeError (node:internal/errors:377:5)
    at Proxy.importKey (node:internal/crypto/webcrypto:517:30)
    at Object.fetch (/private/Users/leonardo/worker-test/src/index.ts:4:37)
    at /Users/leonardo/worker-test/node_modules/@miniflare/core/src/standards/event.ts:331:19
    at /Users/leonardo/worker-test/node_modules/@miniflare/shared/src/event.ts:29:9
    at ServiceWorkerGlobalScope.<anonymous> (/Users/leonardo/worker-test/node_modules/@miniflare/shared/src/event.ts:77:9)
    at ServiceWorkerGlobalScope.[nodejs.internal.kHybridDispatch] (node:internal/event_target:639:20)
    at ServiceWorkerGlobalScope.dispatchEvent (node:internal/event_target:581:26)
    at ServiceWorkerGlobalScope.dispatchEvent (/Users/leonardo/worker-test/node_modules/@miniflare/shared/src/event.ts:63:18)
    at ServiceWorkerGlobalScope.dispatchEvent (/Users/leonardo/worker-test/node_modules/@miniflare/shared/src/event.ts:87:26)