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add bindingEquals, typeEquals, referenceEquals helper methods to Scope

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This commit is contained in:
Sebastian McKenzie 2015-02-06 23:07:10 +11:00
parent 399d835285
commit a6d1a5a724
2 changed files with 6 additions and 2 deletions
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4
lib/6to5/transformation/transformers/es6/constants.js
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@ -24,8 +24,8 @@ var visitor = {
// constant so we can just ignore it // constant so we can just ignore it
if (id === constant) continue; if (id === constant) continue;
var localBinding = scope.getBinding(key); // check if there's been a local binding that shadows this constant
if (localBinding !== constant) continue; if (scope.bindingEquals(key, constant)) continue;
throw state.file.errorWithNode(id, key + " is read-only"); throw state.file.errorWithNode(id, key + " is read-only");
} }

4
lib/6to5/traversal/scope.js
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@ -492,6 +492,10 @@ each({
binding: "Binding", binding: "Binding",
type: "Type" type: "Type"
}, function (title, type) { }, function (title, type) {
Scope.prototype[type + "Equals"] = function (id, node) {
return this["get" + title](id) === node;
};
each([ each([
"get", "get",
"has", "has",