Network access is required to run?

Issue

Setup:

• Deno Version: 1.6.2 (but also occurs for earlier versions)
• v8 Version: <replace_with_v8_version>
• Typescript Version: 4.1.3
• Opine Version: 1.0.0 (but also occurs for versions 0.24.0, 0.25.0, 0.26.0 & 0.27.0

Please replace this line with a short description of the issue.

Details

Since v0.24.0 Opine seems to required network access to run.

Steps to reproduce

Step 1: Create an app.ts file with the following contents

import { opine } from "https://deno.land/x/opine@1.0.0/mod.ts";

const app = opine();

app.get("/", function(req, res) {
  res.send("Hello World");
});

app.listen(3000);

Step 2: Run deno cache app.ts to cache the dependencies

Step 3: Run `deno run app.ts’ and get the following error

error: Uncaught (in promise) PermissionDenied: network access to "https://deno.land/x/denoflate@1.1/pkg/denoflate_bg.wasm", run again with the --allow-net flag
    at processResponse (deno:core/core.js:223:11)
    at Object.jsonOpAsync (deno:core/core.js:240:12)
    at async fetch (deno:op_crates/fetch/26_fetch.js:1278:29)
    at async read (mod.ts:19:15)
    at async init (https://deno.land/x/denoflate@1.1/pkg/denoflate.js:217:45)
    at async mod.ts:23:1

I would have expected this to run without an error.

[cmorten]

Just found https://github.com/deno-library/compress/tree/v0.3.6 which appears to be a typescript implementation of compression libs which we may be able to use instead of denoflate, will spike out this weekend and see if is workable

[mocoso]

Asking about this on Discord got the following response

wasm imports can solve it (https://github.com/denoland/deno/issues/5609) but not here yet. for my wasm based module, i just download file locally and load local wasm if its present download it otherwise