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Fix class inheritance in IE <=10 (T3041) (#3527)

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* Fix class inheritance in IE9 & IE10 (T3041)

Internet Explorer 9&10 do not support __proto__ at all, don't have
Object.setPrototypeOf(), but have Object.getPrototypeOf().

Because of this setting the prototype is not possible, which makes the
babelHelpers.inherits() function to set __proto__ although not supported.

Afterwards Object.getPrototypeOf() is used, but this one is not
respecting the "custom" property __proto__ that we set.

The solution is to check for __proto__ first and afterwards fallback to
Object.getPrototypeOf().

* Do the same logic in babel-helper-replace-supers

* Fix tests

* Extract creation of prototype nodes to small helper
This commit is contained in:
Daniel Tschinder
2016-08-23 21:08:44 +02:00
committed by Henry Zhu
parent 2a4186faf3
commit 10cd6519d8
28 changed files with 87 additions and 71 deletions
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2
packages/babel-plugin-transform-es2015-parameters/test/fixtures/parameters/rest-nested-iife/expected.js vendored
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@@ -5,7 +5,7 @@ function broken(x) {
function Foo() {
babelHelpers.classCallCheck(this, Foo);
return babelHelpers.possibleConstructorReturn(this, Object.getPrototypeOf(Foo).apply(this, arguments));
return babelHelpers.possibleConstructorReturn(this, (Foo.__proto__ || Object.getPrototypeOf(Foo)).apply(this, arguments));
}
return Foo;