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Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
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Alex A. Naanou 2021-06-06 13:34:27 +03:00
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@ -12,9 +12,9 @@ prototype chain, `features.js` defined how that prototype chain is built.
A _feature_ defines define a mixin / action-set and metadata:
- documentation
- dependencies, both hard and soft on other features
- applicability testing
- dependencies both hard and soft
- load priority
- applicability tests
This metadata helps automatically build/rebuild a list of applicable features,
sort it and mix their actions, configuration into an object.
@ -43,26 +43,20 @@ For example splitting an app into:
```
Each _feature_ extending the same base API but implementing only it's specific
functionality, adding new methods where needed, and on setup only the relevant
functionality and adding new methods where needed. On setup only the relevant
features/functionality for a specific runtime are loaded, for example creating
the following prototype chains:
one the following prototype chains depending on context:
<table width="100%">
<tr>
<th>
<table width="100%"><tr><th>
Web site
</th>
<th>
Desktop app
</th>
<th>
CLI
</th>
</tr>
<tr>
<td>
</th><th>
Desktop app
</th><th>
Console
</th></tr><tr><td>
```
+-UI-----------+
@ -79,9 +73,7 @@ the following prototype chains:
```
</td>
<td>
</td><td>
```
+-UI----------+
@ -98,9 +90,7 @@ the following prototype chains:
| Data Handling |
+---------------+
```
</td>
<td>
</td><td>
```
+-UI----------+
@ -117,19 +107,15 @@ the following prototype chains:
```
</td>
</tr>
</table>
</td></tr></table>
Note that since _JavaScript_ does not support multiple inheritance, the
feature dependency _graph_ is linearized when creating a prototype/mixin
chain.
Also note that this architecture is in part inspired by [Python]'s multiple
inheritance implementation, but though similar in some regards, it is quite
different in others.
inheritance implementation, but though similar to it in some regards,
`features.js` is quite different in others.
## Contents