njs-0.3.8

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njs-0.3.8

Dmitry Volyntsev
Hello,

I'm glad to announce a new release of NGINX JavaScript module (njs).

This release proceeds to extend the coverage of ECMAScript
specifications. This release adds Promise object support and
typed-arrays from ES6.

Notable new features:
- Promise support in r.subrequest():
:   r.subrequest(r, '/auth')
:   .then(reply => JSON.parse(reply.responseBody))
:   .then(response => {
:       if (!response['token']) {
:           throw new Error("token is not available");
:       }
:       return token;
:   })
:  .then(token => {
:      r.subrequest('/backend', `token=${token}`)
:      .then(reply => r.return(reply.status, reply.responseBody));
:  })
:  .catch(_ => r.return(500));

You can learn more about njs:

- Overview and introduction: http://nginx.org/en/docs/njs/
- Presentation: https://youtu.be/Jc_L6UffFOs
- Using node modules with njs:
http://nginx.org/en/docs/njs/node_modules.html

Feel free to try it and give us feedback on:

- Github: https://github.com/nginx/njs/issues
- Mailing list: http://mailman.nginx.org/mailman/listinfo/nginx-devel


Changes with njs 0.3.8                                      21 Jan 2020

     nginx modules:

     *) Feature: added Promise support for r.subrequest(). If callback
        is not provided r.subrequest() returns an ordinary Promise object
        that resolves to subrequest response object.

     *) Change: r.parent property handler now returns "undefined"
       instead of throwing exception if parent object is not available.

     Core:

     *) Feature: added Promise support. Implemented according to
        the specification without: Promise.all(), Promise.allSettled(),
        Promise.race().

     *) Feature: added initial Typed-arrays support.
        Thanks to Tiago Natel de Moura.

     *) Feature: added ArrayBuffer support.
        Thanks to Tiago Natel de Moura.

     *) Feature: added initial Symbol support.
        Thanks to Artem S. Povalyukhin.

     *) Feature: added externals supopor for JSON.stringify().

     *) Feature: added Object.is().
        Thanks to Artem S. Povalyukhin.

     *) Feature: added Object.setPrototypeOf().
        Thanks to Artem S. Povalyukhin.

     *) Feature: introduced nullish coalescing operator.
        Thanks to Valentin Bartenev.

     *) Bugfix: fixed Object.getPrototypeOf() according to the
        specification.

     *) Bugfix: fixed Object.prototype.valueOf() according to the
        specification.

     *) Bugfix: fixed JSON.stringify() with unprintable values and
        replacer function.

     *) Bugfix: fixed operator "in" according to the specification.

     *) Bugfix: fixed Object.defineProperties() according to the
        specification.

     *) Bugfix: fixed Object.create() according to the specification.
        Thanks to Artem S. Povalyukhin.

     *) Bugfix: fixed Number.prototype.toString(radix) when
        fast-math is enabled.

     *) Bugfix: fixed RegExp() instance properties.

     *) Bugfix: fixed import segfault.
        Thanks to 洪志道 (Hong Zhi Dao).
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