I’ve been meaning to write this for nearly a year, but I held off hoping things would change with the next release. They didn’t, so I’m writing this: the Clipboard plugin for the Ext.grid.Panel class – which provides cut-and-paste support for the enhanced table widget – is borked by design. It does stupid things, and Sencha says it should do the stupid things. In this post I share what these things are, and how I’ve overriden the default behaviour to do something hopefully less stupid. Warning: this is a rant.
Sencha recently announced the general availability of ExtJS 6.2. People who regularly read my posts (hi, to all three of you. 😉 will be aware that I’ve been working with the ExtJS library for a number of years now, while building a suite of apps of some not inconsiderable size1. It’s probably not the largest ExtJS app in the world, but it’s up there. And when you work on an application for a number of years, you’ll need to upgrade its framework from time to time.
Every time I’ve done this, the process has been a bit different. This time, it’s different in a good way – it was easy.
Using Sencha Ext.Config – some nice tips, especially around automatic events for config changes.
The NPM organisation, a for-profit company, has just demonstrated that it doesn’t care about the IP rights of contributors. As a organisation built entirely on the contributions of others, this is a worrying precedent.
Azer Koçulu had developed and distributed, via NPM, a module called
left-pad. It’s a simple library, consisting of 11 lines of code, that does what it says on the box – pads a string by adding spaces to the left.
This module then got picked up and used by lots of other modules. Apparently it had been downloaded nearly 2,500,000 times in the last month.
Koçulu had another module, called Kik. He received a cease-and-desist order from a lawyer complaining about trademark violation. He disputed that, and the lawyer then went to NPM. NPM decided to transfer the ownership of the Kik module – not remove it, but to assign ownership to a third-party.
Not surprisingly, Koçulu was annoyed by this. So he yanked all of his modules – about 250 of them – from NPM. Including
This broke lots of things – heaps of projects around the world started to see failures due to the missing dependency on
left-pad. In many cases, these were secondary dependencies – where ProjectA breaks because it depends on ProjectB, which depends on
There is no question that this is a messy situation. But the fix that NPM decided on was worse. They un-unpublished the most recent version of
left-pad, apparently at the request of a new owner.
What NPM should have done
It’s fine that someone can claim the
left-pad module – if it’s been abandoned, it’s up for grabs. Nothing particularly wrong with that.
But the new owner only gets access to the name – they don’t suddenly get rights to the previously published code. Nor can NPM assign them the rights – by their own terms of service, they lose those rights when a module gets unpublished.
The new owner should have taken the couple of minutes it would have taken to fork the
left-pad code base (which, under the WTFPL license used to distribute it, would have been perfectly fine), then packaged it up and submitted to NPM as a new module. They could even have re-used the version number, which would have solved everything.
In the case of Kik, NPM could have expelled the offending module. They could have claimed a safe-harbour provision and left it there. But they should not have assigned ownership to a third-party. And they really should not have double-downed on their transgression by doing it again.
NPM does not care about the IP rights of its contributors. They have shown they are willing to transfer IP to third-parties, and even to transfer IP they’ve explicitly had their rights to distribute removed.
I would suggest not publishing anything to NPM.
A logarithmic axis is useful for displaying data with a large range of values. Sometimes these values are already on a log scale – e.g. the Richter scale is a log scale, as is decibels. You can plot this on a normal linear numeric axis. But sometimes your values can’t be easily converted to a log scale. Maybe you’re plotting wealth distribution. Or, in my case, particle size distributions, where the sizes can range from metres down to microns. When dealing with something like this, you need a log axis.
But there’s just one problem… you have to use the embedded web server started with the
sencha app watch command. Which is fine if all you’ve got is a webpage, but if you’re dealing with web services (as so many web apps do), it’s a bit restricting – at least if you don’t want to configure your app or server to allow cross-site scripting.
But Live Update is too awesome to forego! What to do?
Quick _aide-mémoire_ so that I don’t forget. When upgrading from ExtJS 4 to ExtJS 5, if you’ve got any components that use a custom template, and expect `childEls` to be configured correctly, you need to add a `data-ref` to the generated HTML.
Quick aide-mémoire so that I don’t forget. When upgrading from ExtJS 4 to ExtJS 5, if you’ve got any components that use a custom template, and expect
childEls to be configured correctly, you need to add a
data-ref to the generated HTML.