Deno imports compatibility?

[shinebayar-g]

• I have searched for similar issues
• I am using the latest version of npm-check-updates
• I am using node >= 14.14

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Hi, I'm a long time ncu user, love it. Recently I started working on a new project with Deno. Looks like Deno supports npm modules via imports configuration. Example deno.json file.

{
    "imports": {
        "cdk8s": "npm:cdk8s@^2.6.43",
    },
}

With this defined, deno will support npm modules without any other changes. Following works as expected.

import { App, Chart, ChartProps } from 'cdk8s';

Would you consider making ncu compatible with Deno with above workflow?

[raineorshine]

Hi, thanks for the suggestion.

I added basic support and published to v16.7.0. ncu will now autodetect deno.json so it should "just work". Or you can do ncu --packageManager deno --packageFile customDenoConfig.json if you have a custom deno config file location.

Please try it out at your convenience and let me know how it works :).

[shinebayar-g]

Just tried version 16.7.0. It worked well.

❯ ncu
Using deno
Checking /Users/me/cdk8s-demo/deno.json
[====================] 2/2 100%

 constructs  npm:[email protected]  →  10.1.245

Run ncu -u to upgrade deno.json

Couple of items.

1. Looks like deno config file is going to be either deno.json or deno.jsonc. Doc

The configuration file supports .json and .jsonc extensions.

2. Not sure if deno install command is the correct one to use.

❯ ncu
Using deno
Upgrading /Users/me/cdk8s-demo/deno.json
[====================] 2/2 100%

 constructs  npm:[email protected]  →  10.1.245

Run deno install to install new versions.

❯ deno install
error: The following required arguments were not provided:
    <cmd>...

USAGE:
    deno install [OPTIONS] <cmd>...

For more information try --help

❯ deno install --help
deno-install
Installs a script as an executable in the installation root's bin directory.

I think correct usage is maybe this.

❯ deno cache npm:[email protected] # worked
❯ deno cache npm:constructs # didn't work

[shinebayar-g]

Just tried multiple package upgrade.

❯ ncu
Using deno
Checking /Users/me/cdk8s-demo/deno.json
[====================] 2/2 100%

 cdk8s              npm:[email protected]  →    2.6.44
 constructs  npm:[email protected]  →  10.1.245

Run ncu -u to upgrade deno.json

❯ ncu -u
Using deno
Upgrading /Users/me/cdk8s-demo/deno.json
[====================] 2/2 100%

 cdk8s              npm:[email protected]  →    2.6.44
 constructs  npm:[email protected]  →  10.1.245

Run deno install to install new versions.

Multiple package upgrade worked as expected.

deno cache npm:[email protected] npm:[email protected]

[raineorshine]

Is deno cache necessary? I got the impression that adding a package to the import map was enough. I may simply omit the install hint unless you think it's useful.

[shinebayar-g]

I mean it's equivalent of npm install. So instead of saying Run deno install to install new versions. after ncu -u, let's say deno cache npm:[email protected] npm:[email protected]

deno cache alone is also not a complete command.

❯ deno cache
error: The following required arguments were not provided:
    <file>...

USAGE:
    deno cache [OPTIONS] <file>...

For more information try --help

I got the impression that adding a package to the import map was enough.

This doesn't download the dependencies automatically. But Deno will download necessary dependencies on the next deno run something.ts.

Suggesting deno cache ... is just for the sake of consistency if you want to recommend equivalent of npm install

[raineorshine]

I mean it's equivalent of npm install. So instead of saying Run deno install to install new versions. after ncu -u, let's say deno cache npm:[email protected] npm:[email protected]

The cheat sheet says that it's not necessary:

the runtime downloads and caches the code on first use

npm cache alone is also not a complete command.

Yes, thanks, I meant npm cache X.

[raineorshine]

Suggesting deno cache ... is just for the sake of consistency if you want to recommend equivalent of npm install

Sure, makes sense. I tend to prefer the most minimal output possible, so if it's not strictly necessary I think I will omit it. Plus that's one less command that the user needs to enter.

[shinebayar-g]

I meant npm cache X.

Oops I edited my message 😆

Yeah I agree with you. :)

[raineorshine]

Added jsonc support in v16.7.3

Edit: And removed the erroneous install hint in v16.7.4 :)

[shinebayar-g]

Just tested out the latest release, looks like you nailed it. Thank you.