The netlify CLI attempts to access the network despite the --offline option

[swiing]

Describe the bug

Documentation for the dev command says that the option 'offline (boolean) - disables any features that require network access'.

However, this seems inaccurate wrt edge function environment.

Running netlify dev --offline when the network connectivity is not available starts ok, but eventually throws.

Steps to reproduce

1- cut network connectivity.
2- run npx netlify dev --offline

npx netlify dev --offline
◈ Netlify Dev ◈
◈ No app server detected. Using simple static server
◈ Running static server from "www-public-new/public"

◈ Static server listening to 3999
⠋ Setting up the Edge Functions environment. This may take a couple of minutes.
   ┌─────────────────────────────────────────────────┐
   │                                                 │
   │   ◈ Server now ready on http://localhost:8888   │
   │                                                 │
   └─────────────────────────────────────────────────┘

⠋ Setting up the Edge Functions environment. This may take a couple of minutes.FetchError: request to https://dl.deno.land/release/v1.20.3/deno-x86_64-unknown-linux-gnu.zip failed, reason: getaddrinfo EAI_AGAIN dl.deno.land

and then the CLI throws.

Configuration

No response

Environment

System:
OS: Linux 5.10 Ubuntu 20.04 LTS (Focal Fossa)
CPU: (12) x64 AMD Ryzen 5 PRO 5650U with Radeon Graphics
Memory: 3.26 GB / 5.65 GB
Container: Yes
Shell: 5.0.16 - /bin/bash
Binaries:
Node: 16.16.0 - ~/.nvm/versions/node/v16.16.0/bin/node
npm: 8.11.0 - ~/.nvm/versions/node/v16.16.0/bin/npm

[tinfoil-knight]

@swiing I'm not able to reproduce this. I've attached the output I'm getting below.

Is the repository you're working on public? (If yes, could you share it)

Do you have any specific configuration in netlify.toml? Also, could you share the CLI version you were using?

ncli dev --offline
◈ Netlify Dev ◈
◈ No app server detected. Using simple static server
◈ Unable to determine public folder to serve files from. Using current working directory
◈ Setup a netlify.toml file with a [dev] section to specify your dev server settings.
◈ See docs at: https://cli.netlify.com/netlify-dev#project-detection
◈ Running static server from "5051-redirect-us"
◈ Setting up local development server
 ​
────────────────────────────────────────────────────────────────
  Netlify Build
────────────────────────────────────────────────────────────────
 ​
❯ Version
  @netlify/build 27.18.3
 ​
❯ Flags
  offline: true
 ​
❯ Current directory
  /Users/kunal/Desktop/myfolder.nosync/oss/p-cli-test/5051-redirect-us
 ​
❯ Config file
  /Users/kunal/Desktop/myfolder.nosync/oss/p-cli-test/5051-redirect-us/netlify.toml
 ​
❯ Context
  dev
 ​
────────────────────────────────────────────────────────────────
  1. Run command for local development
────────────────────────────────────────────────────────────────
 ​

◈ Static server listening to 3999
 ​
(dev.command completed in 2ms)

   ┌─────────────────────────────────────────────────┐
   │                                                 │
   │   ◈ Server now ready on http://localhost:8888   │
   │                                                 │
   └─────────────────────────────────────────────────┘

[tinfoil-knight]

@jackiewmacharia Do you know how to reset the cache for the packages that the edge functions environment downloads? Would help me in reproducing the error faced by the user above.

I was looking here:

cli/src/lib/edge-functions/proxy.js

Lines 163 to 179 in 138681d

	try {
	const bundler = await import('@netlify/edge-bundler')
	const distImportMapPath = getPathInProject([DIST_IMPORT_MAP_PATH])
	const runIsolate = await bundler.serve({
	...getDownloadUpdateFunctions(),
	certificatePath,
	debug: env.NETLIFY_DENO_DEBUG === 'true',
	distImportMapPath,
	formatExportTypeError: (name) =>
	`${NETLIFYDEVERR} ${chalk.red('Failed')} to load Edge Function ${chalk.yellow(
	name,
	)}. The file does not seem to have a function as the default export.`,
	formatImportError: (name) =>
	`${NETLIFYDEVERR} ${chalk.red('Failed')} to run Edge Function ${chalk.yellow(name)}:`,
	importMaps,
	inspectSettings,
	port,

But couldn't pin-point what to do to clear the cache so that I can receive the error message described in the issue.

Setting up the Edge Functions environment. This may take a couple of minutes.FetchError: request to https://dl.deno.land/release/v1.20.3/deno-x86_64-unknown-linux-gnu.zip failed, reason: getaddrinfo EAI_AGAIN dl.deno.land

[eduardoboucas]

This is an interesting one. On the one hand, it feels like we should respect --offline and not download the Deno CLI or any Deno modules, but that means not being able to run edge functions unless everything has been cached locally.

[swiing]

@tinfoil-knight , my repo is not public, but I believe it is pretty "standard".

My CLI version: netlify-cli/10.4.0 wsl-x64 node-v16.16.0

Ironically, I actually can't reproduce myself. I guess because I have everything in cache by now.