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Exclude super from being assign (#4642)

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Assigning of super is not allowed `var ref = super;` This fix adds an exception into
the explode helper so that super stays untouched and does not get assigned.
This commit is contained in:
Daniel Tschinder 2016-10-04 03:04:26 +02:00 committed by Henry Zhu
parent ab3cff7cc3
commit 2dcee25d37
4 changed files with 25 additions and 2 deletions
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8
packages/babel-helper-explode-assignable-expression/src/index.js
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@ -3,7 +3,10 @@ import * as t from "babel-types";
function getObjRef(node, nodes, file, scope) {
let ref;
if (t.isIdentifier(node)) {
if (t.isSuper(node)) {
// Super cannot be directly assigned so lets return it directly
return node;
} else if (t.isIdentifier(node)) {
if (scope.hasBinding(node.name)) {
// this variable is declared in scope so we can be 100% sure
// that evaluating it multiple times wont trigger a getter
@ -17,10 +20,11 @@ function getObjRef(node, nodes, file, scope) {
} else if (t.isMemberExpression(node)) {
ref = node.object;
if (t.isIdentifier(ref) && scope.hasBinding(ref.name)) {
if (t.isSuper(ref) || t.isIdentifier(ref) && scope.hasBinding(ref.name)) {
// the object reference that we need to save is locally declared
// so as per the previous comment we can be 100% sure evaluating
// it multiple times will be safe
// Super cannot be directly assigned so lets return it also
return ref;
}
} else {

5
packages/babel-plugin-transform-exponentiation-operator/test/fixtures/regression/4349/actual.js vendored Normal file
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@ -0,0 +1,5 @@
foo = {
bar() {
return super.baz **= 12;
}
}

11
packages/babel-plugin-transform-exponentiation-operator/test/fixtures/regression/4349/expected.js vendored Normal file
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@ -0,0 +1,11 @@
var _obj;
var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };
var _set = function set(object, property, value, receiver) { var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent !== null) { set(parent, property, value, receiver); } } else if ("value" in desc && desc.writable) { desc.value = value; } else { var setter = desc.set; if (setter !== undefined) { setter.call(receiver, value); } } return value; };
foo = _obj = {
bar() {
return _set(_obj.__proto__ || Object.getPrototypeOf(_obj), "baz", Math.pow(_get(_obj.__proto__ || Object.getPrototypeOf(_obj), "baz", this), 12), this);
}
};

3
packages/babel-plugin-transform-exponentiation-operator/test/fixtures/regression/4349/options.json vendored Normal file
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@ -0,0 +1,3 @@
{
"plugins": ["transform-es2015-object-super", "transform-exponentiation-operator"]
}