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fix(extend): super_ should be available for backwards compatibility (#6329)

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Fixes #6328
This commit is contained in:
Gary Katsevman 2019-11-22 12:32:18 -05:00 committed by GitHub
parent 1545804959
commit 25d15d4b14
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2 changed files with 17 additions and 0 deletions
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5
src/js/extend.js
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@ -44,6 +44,11 @@ const extend = function(superClass, subClassMethods = {}) {
_inherits(subClass, superClass);
// this is needed for backward-compatibility and node compatibility.
if (superClass) {
subClass.super_ = superClass;
}
// Extend subObj's prototype with functions and other properties from props
for (const name in methods) {
if (methods.hasOwnProperty(name)) {

12
test/unit/extend.test.js
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@ -16,3 +16,15 @@ QUnit.test('should add implicit parent constructor call', function(assert) {
assert.ok(superCalled, 'super constructor called');
assert.ok(child.foo, 'child properties set');
});
QUnit.test('should have a super_ pointer', function(assert) {
const Parent = function() {};
const Child = extend(Parent, {
foo: 'bar'
});
const child = new Child();
assert.ok(child.foo, 'child properties set');
assert.equal(child.constructor.super_, Parent, 'super_ is present and equal to the super class');
});