ECMAScript 7 support

[Александр Митенко]

Hi!

Can you tell me the date in mind of the ECMAScript 7 Standard support in the JavaScript plugin?

Thanx, Alexander.

[Elena Vilchik]

Hello,

Do you mean ECMAScript 2016 standard (https://www.ecma-international.org/ecma-262/7.0/)? We support it since SonarJS 2.12. 

Do you have any parsing problems?

Thanks

Elena 

[Александр Митенко]

Hello!

Yes, we have parsing problem at bind shortcut:

::this.handleEsc must be equivalent for this.handleEsc.bind(this)

but SonarJS log an exception for :: notation:

[ERROR] Unable to parse file: .... 

[ERROR] Parse error at line .. column ..

Thanx!

Alexander

понедельник, 27 февраля 2017 г., 18:48:54 UTC+3 пользователь Elena Vilchik написал:

[Александр Митенко]

Hello,

What about info at official page? https://www.sonarsource.com/why-us/products/languages/javascript.html tell us about SonarJS supports ECMAScript 6 / ECMAScript 2015...

BR

Alexander

понедельник, 27 февраля 2017 г., 16:39:35 UTC+3 пользователь Александр Митенко написал:

[Elena Vilchik]

Hello Alexandr,

It's an experimental feature at stage 0 (see https://github.com/tc39/proposals/blob/master/stage-0-proposals.md "Function Bind Syntax") for version 2017 (aka 8th edition), which is under development currently. Our current strategy is to support features of ES 2017 at state 2 and over.

And thanks for pointing at the wrong doc! we should update it.

Elena.

[Александр Митенко]

Hello, Elena!

Thank You for correct pointing me to that feature.

Can You advice me, how this point correlates with ECMAScript version roadmap?

Thanks

Alexander

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С Уважением,

Александр Митенко.

[Elena Vilchik]

Our plugin SonarJS fully supports ECMAScript 5, 6 and 7 (aka 2015 and 2016). The next version of ECMAScript (8 or 2017) is under development and we add its features/proposals to SonarJS as soon as they reach stage 2.

The feature you use is at stage 0, so it's absolutely experimental now. Until it reaches stage 2 (which might never happen) we will not support it.

Elena

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To view this discussion on the web visit https://groups.google.com/d/msgid/sonarqube/86728a63-5428-45cd-977b-0f49c6c17b21%40googlegroups.com.

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[marcel...@gmail.com]

Hello all,

we have a parsing error related to ECMAScript 6 (Sorry for adding this to a ECMA7 thread, but it seems related to Elena's answer). 

import {Component} from '@angular/core';

/**
 * Class representing a template message.
 */
@Component({
  moduleId: __moduleName,
  template: '<h2>template</h2>'
})
export class TemplateComponent {
^
}

This parsing error seems to be related to ECMAScript 6 Decorators. 

Is this fixable? Sadly almost all files contain such a construct.

Thanks in advance,

Marcel

[Elena Vilchik]

Hi Marcel,

In fact decorators are part of ECMA 2017 (aka 8). And indeed, we fail to parse decorators for a class declared inside export statement as this is not mentioned in the proposal specification (http://tc39.github.io/proposal-decorators/#sec-syntax). Do you have a specification for this syntax?

Elena

[marcel...@gmail.com]

Thanks Elena,

I always get the ECMA versions mixed up. I was unsuccessful in finding direct specification. 

We followed the Angular 2 documentation (https://angular.io/docs/ts/latest/guide/ngmodule.html) which is focusing on TypeScript.

There is an ongoing discussion whether to move to TypeScript.

As you mentioned somewhere else in this group there could come official TypeScript support to sonarqube.

Thanks

Marcel