Announcing TypeScript 0.9.1 • Hacker News Board

Re: Announcing TypeScript 0.9.1

#51

Post by CmonDev » Wed, Aug 07, 2013, 8:11 AM UTC

ajanuary wrote: post #49

shearnie wrote: post #5

Earlier quoted context omitted.

My project isn't huge, but larger than it could have been using idiomatic javascript. The scoping with modules and the typing really helped since I'm familiar with C# and having "everything light up" in the IDE. Saved a ton of time letting a compiler catch things instead of writing tests. I tried coffee script, but found the copy/paste option for javascript that I have already written won me over.

Saved a ton of time letting a compiler catch things instead of writing tests. Types should never mean writing less tests :/

Static typing means automatic language-integrated type-checking unit tests. I would bet a lot of dynamic language unit testing has to do with compensating for the lack of proper type checking. It's just like using patterns compensates for lacking language features.

Re: Announcing TypeScript 0.9.1

#52

Post by santialbo » Wed, Aug 07, 2013, 8:15 AM UTC

hrjet wrote: post #38

jzelinskie wrote: post #3

I haven't heard much about TypeScript since its original announce. Are any big projects using it? Does anybody have some commentary on their experience using it and where they think the project is going?

I was writing a biggish weekend project. It was mostly client-side logic with a FireBase backend. I developed the first prototype in pure JS and there were some bugs (due to me being new to this FireBase model, and some hastily developed code). I then converted the whole thing to TypeScript, because I prefer static typing. It took some time to setup: upgrading to the latest nodejs, collecting all type definitions for…

I just wish they update the built-in code analysis to use TypeScript 0.9. I don't like having to use outdated type definitions.

Re: Announcing TypeScript 0.9.1

#53

Post by jol » Wed, Aug 07, 2013, 8:17 AM UTC

jzelinskie wrote: post #3

I haven't heard much about TypeScript since its original announce. Are any big projects using it? Does anybody have some commentary on their experience using it and where they think the project is going?

I'm just starting with some hobby project (as usual nothing special to show yet) and picked up typescript as it supports me when I am forgetful (as the project time is scattered in small bits) or just plain lazy. I see this as big win for big projects where no-one (or at least no-one) can see all the details in the project, it saves a lot of jumping around in codebase

Re: Announcing TypeScript 0.9.1

#54

Post by santialbo » Wed, Aug 07, 2013, 8:18 AM UTC

sluukkonen wrote: post #28

Does anyone have experience with using TypeScript with existing libraries like Angular.js? I know that there are definition files for it [1] (and many other popular libraries), but unfortunately I haven't had the time to check out their quality. [1] https://github.com/borisyankov/DefinitelyTyped/tree/master/a...

We are building a webapp using TypeScript and Angularjs and we are quite happy. It takes some time to set up everything, we even created our own yeoman generator, but at the end I think it's worth it.

Re: Announcing TypeScript 0.9.1

#55

Post by CmonDev » Wed, Aug 07, 2013, 8:18 AM UTC

Permit wrote: post #21

deadreturns3 wrote: post #18

Am justing waiting for them to implement "await".

I think you might be waiting for awhile unfortunately. Implementing await would result in a lot of autogenerated code. Typescript is largely meant to be almost 1:1 with the Javascript it produces. Anders talks about that problem in this video: http://channel9.msdn.com/Events/Build/2013/9-006

Awaiting for awhile? Awful.

Re: Announcing TypeScript 0.9.1

#56

Post by CmonDev » Wed, Aug 07, 2013, 8:19 AM UTC

jeswin wrote: post #25

deadreturns3 wrote: post #18

Am justing waiting for them to implement "await".

That would result in future incompatibility, considering ES6 has generators which could do the same job. edit: just the points

We will care about this in 2050 - when ES6 gets released.

Re: Announcing TypeScript 0.9.1

#57

Post by CmonDev » Wed, Aug 07, 2013, 8:20 AM UTC

CmonDev wrote: post #51

ajanuary wrote: post #49

Earlier quoted context omitted.

Saved a ton of time letting a compiler catch things instead of writing tests. Types should never mean writing less tests :/

Static typing means automatic language-integrated type-checking unit tests. I would bet a lot of dynamic language unit testing has to do with compensating for the lack of proper type checking. It's just like using patterns compensates for lacking language features.

Did not mean dynamic languages are bad. They are awesome for scripting on the static type language core. Unless you like writing _lots_ of basic unit tests.

Re: Announcing TypeScript 0.9.1

#58

Post by ajanuary » Wed, Aug 07, 2013, 8:21 AM UTC

exit wrote: post #50

ajanuary wrote: post #49

Earlier quoted context omitted.

Saved a ton of time letting a compiler catch things instead of writing tests. Types should never mean writing less tests :/

i see people writing tests for the structure of returned objects type annotation tests that at compile time

That suggests to me they're missing tests that check the data held in the objects.

There might be some worth in checking the structure of an object (including attached functions) as it leaves a public api, especially in a language like Javascript that plays it so fast and loose with object construction.

That's one of the nice thing about typescript - you can use it where it's most helpful and leave it where it's not.

Re: Announcing TypeScript 0.9.1

#59

Post by sequence7 » Wed, Aug 07, 2013, 8:21 AM UTC

boromi wrote: post #23

jzelinskie wrote: post #3

I haven't heard much about TypeScript since its original announce. Are any big projects using it? Does anybody have some commentary on their experience using it and where they think the project is going?

The largest project I know using it from what anders has mentioned is xbox music, which is about half a million lines of typescript. In addition the IE11 debugger also is written in typescript.

Also the Azure management portal is written in typescript.

Re: Announcing TypeScript 0.9.1

#60

Post by cangencer » Wed, Aug 07, 2013, 8:24 AM UTC

jzelinskie wrote: post #3

I haven't heard much about TypeScript since its original announce. Are any big projects using it? Does anybody have some commentary on their experience using it and where they think the project is going?

has anybody been it using it for a node.js project? (i.e. serverside?)