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71e313e677
- Encapsulate app.current, app.previous in PageState objects - Reorganize Page classes to use one central base class in common Co-authored-by: Franz Liedke <franz@develophp.org>
7 lines
167 B
JavaScript
7 lines
167 B
JavaScript
/**
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* Check if class A is the same as or a subclass of class B.
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*/
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export default function subclassOf(A, B) {
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return A && (A === B || A.prototype instanceof B);
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}
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