NPM monthly and weekly downloads

[calebcartwright]

Not sure when it started but looks like all of the npm total downloads badges are incorrectly showing as zero. Monthly downloads appear to still be working. I noticed this on my own project but a few examples of well known packages below:

https://img.shields.io/npm/dt/express.svg
https://img.shields.io/npm/dt/angular.svg
https://img.shields.io/npm/dt/mocha.svg

https://img.shields.io/npm/dm/express.svg
https://img.shields.io/npm/dm/angular.svg
https://img.shields.io/npm/dm/mocha.svg

[mesaugat]

Yes. Looks like it's the same for PyPi.

[mitchallen]

It looks like the code for npm/dt is making a call like this: https://api.npmjs.org/downloads/range/1000-01-01:3000-01-01/uuid which returns: {"error":"exceeded max days of 365"}

So since there is no downloads property, this line in server.js just converts to 0:
var downloads = JSON.parse(buffer).downloads || 0;

Note that npm/dm works fine. Internally it makes a call like this: https://api.npmjs.org/downloads/point/last-month/uuid that properly returns: {"downloads":19184120,"start":"2017-03-14","end":"2017-04-12","package":"uuid"}

[mesaugat]

Looks like they have updated the API and now only support download counts for a year or not more than 365 days.

This works:
https://api.npmjs.org/downloads/range/2017-01-01:2018-01-01/uuid

We'll have to make multiple requests for counting total number of downloads for a package. It's better to switch to a downloads/year metric now.

[espadrine]

Makes sense. Using https://api.npmjs.org/downloads/range/ is not that useful with this restriction. Let's switch to https://api.npmjs.org/downloads/point/last-year/.

For compatibility purposes, let's have npm/dt return the yearly count, as it's the best we can do. If we again get a way to display dt, we'll switch it to give the more accurate result.

And let's add an npm/dy badge.

[mesaugat]

Seems good to me 👍

[espadrine]

@mesaugat As for PyPi, there's little we can do for now: pypi/legacy#396 (comment)
Sometimes badges die…
The corresponding issue is #716.

[mesaugat]

@espadrine I see, thanks!

I've not looked at the code properly but I think I will be able to work on npm/dt and npm/dy as you said.

[paulmelnikow]

Am I right that npm/dt used to return the cumulative total downloads? That's what it looks like from a query like this:

https://api.npmjs.org/downloads/range/1000-01-01:3000-01-01/uuid

I could reach out to the npm registry folks. This badge seems popular with developers. Maybe they would add an endpoint for us.

[mesaugat]

Yes, it's quite popular. If we can get an endpoint it would be awesome.

[mitchallen]

For npm talk to Benjamin Coe: https://github.com/bcoe https://twitter.com/BenjaminCoe

[mesaugat]

Here's the GitHub repo: https://github.com/npm/download-counts

Reference: http://blog.npmjs.org/post/78719826768/download-counts-are-back

[mitchallen]

Via Twitter:

Benjamin Coe
@benjamincoe
Apr 13

@mitchallen @espadrine we're going to lift the limit for the time being, and will introduce an all-time shorthand soon too.

[paulmelnikow]

Nice!

[paulmelnikow]

Looks like we will need a code change:

https://api.npmjs.org/downloads/range/1000-01-01:3000-01-01/uuid

{
    error: "unknown error"
}

https://api.npmjs.org/downloads/range/2015-01-01:2018-01-01/uuid

{
start: "2015-01-01",
end: "2017-04-14",
package: "uuid",
downloads: [
{
downloads: 0,
day: "2015-01-01"
},
{
downloads: 0,
day: "2015-01-02"
},
{
downloads: 0,
day: "2015-01-03"
},
{
downloads: 0,
day: "2015-01-04"
},
...

[bcoe]

@paulmelnikow I'm adding a change to protect you from this query; should be out in 10 minutes, will keep you updated.

[bcoe]

okay, things should magically start working again; I've pinned dates to our epoch, and an appropriate point in the future, so that requesting 1000:3000 doesn't result in an expensive query.

[paulmelnikow]

dt badges are back! Thanks for the fast response!

[mesaugat]

Great, we should add a downloads/week and a downloads/year badge for npm too.

[paulmelnikow]

Agreed. Would you like to open a PR?

[mesaugat]

Sure, I will look into it when I find some time.

[calebcartwright]

just want to say well done folks. thanks for getting this taken care of so quickly!

[elect86]

sorry for the ot

but how am I supposed to use the npm badge?
[![npm](https://img.shields.io/npm/dm/localeval.svg)]()

I tried
https://img.shields.io/npm/dm/kotlin-graphics/kotlin-unsigned.svg

but returns 0..

[paulmelnikow]

@elect86 Could you open a new issue?