Fixing a problem with auto-bind and multiple subclasses#348
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rorticus
commented
May 20, 2019
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| const IGNORE_LIST: (string | symbol)[] = ['constructor', 'render']; | ||
| const IGNORE_LIST: (string | symbol)[] = ['render', ...Object.getOwnPropertyNames(Object.getPrototypeOf({}))]; |
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We can exclude all the properties that come from Object.prototype. Technically we might not even need this since we break our loop on subclasses of WidgetBase?
rorticus
commented
May 20, 2019
| p = Object.getPrototypeOf(p); | ||
| } | ||
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| keys = keys.filter((k) => typeof instance[k] === 'function' && IGNORE_LIST.indexOf(k) === -1); |
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The filtering of keys through the ignore list is now done up here rather than down yonder.
agubler
reviewed
May 21, 2019
| if (autoBindCache.has(prototype)) { | ||
| keys = autoBindCache.get(prototype) as string[]; | ||
| } else { | ||
| let p = prototype; |
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Don't need to do this, just use prototype?
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Removed extra variable p!
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@rorticus It also looks like CI is failing |
agubler
approved these changes
May 29, 2019
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Type: bug
The following has been addressed in the PR:
prettieras per the readme code style guidelinesDescription:
There is a problem with the new auto-bind code when there are multiple levels of inheritance. It currently only applies the binding logic to the first level of inheritance.
To fix this, we're walking the prototype chain up to
WidgetBaseand gathering all the properties from there. Since this is a bit of an expensive operation, we're also caching the result of the property gathering so it only needs to happen once per widget class.