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GNU ease.js 0.2.9 released

Item posted by Mike Gerwitz <mikegerwitz> on Wed 08 Nov 2017 04:18:46 AM UTC.

This release succeeds v0.2.8, which was released 15 July, 2016. There are no backwards-incompatible changes, but certain default behaviors have changed (see changes below). Support continues for ECMAScript 3+.

Changes between 0.2.8 and 0.2.9
-------------------------------

Class constructors are now virtual by default. The manual has been updated with information about this change.

Method overrides are now implicitly virtual. This is consistent with other object-oriented languages and solves the problem with breaking stackable traits if the author forgets to supply `virtual' to an overridden (intended-to-be-stackable) method. The manual has been updated.

New methods `Class.assertInstanceOf' and its alias `Class.assertIsA' have been added to eliminate boilerplate of enforcing polymorphism. They are like `Cass.isInstanceOf' and `Class.isA' respectively, but will fail by throwing a TypeError. The manual has been updated to include these two methods, along with some rewording of the containing section.

`Class.extend(Base)', where `Base' is a class, will now assume that you forgot the class definition and throw an error rather than trying to use Base' as the definition object.

[bugfix] Using `#constructor' (alias of `#__construct') in Error subtypes will no longer complain about an attempt to redefined `#__construct'.

`Constructors' section of manual has been reworded and references to poor practices (static classes, Singletons) have been removed.

Manual (and website) examples modernized to use ECMAScript 6 syntax. Users must still write ES3 syntax if they want to use ease.js in ES3 environments, of course.

INSTALL file added to repository (removed from .gitignore). This was previously (and unintentionally) only available in the distribution archives.

This release contains a number of bugfixes for traits, which is stable but
still under development:

[bugfix] Methods of trait class supertypes now apply with the correct context. (Feature added in 0.2.7)

[bugfix] Traits extending classes may now be named using the `Trait('Name').extend(C, dfn)' notation. (Feature added in 0.2.7)

[bugfix] Can now mix in traits with class supertypes that define constructors. (Feature added in 0.2.7)

[bugfix] `this.__inst' in traits now correctly references the object mixed into; previously, this was `undefined'.

I apologize for the (extreme) delay in this release: the process was stalled for many months while waiting for certain legal documents after my employer was purchased by another company.

Release notes for past releases are available at:
https://www.gnu.org/software/easejs/release-notes.html

More information, including an online manual, can be found on GNU's website:
https://gnu.org/software/easejs