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remove anonymous class constructor name in specific case

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Name of anonymous class constructor is not needed when it contains
exactly one method that is not construtor, because constructor
will be assigned to variable in closure.
This commit is contained in:
Ondrej Kraus
2015-02-24 00:20:45 +01:00
parent 9621d1bbeb
commit b7c297bb89
1 changed files with 5 additions and 1 deletions
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6
lib/babel/transformation/transformers/es6/classes.js
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@@ -65,6 +65,7 @@ function ClassTransformer(node, file, scope, isStatement) {
ClassTransformer.prototype.run = function () {
var superName = this.superName;
var className = this.className;
var classBody = this.node.body.body;
var file = this.file;
//
@@ -86,7 +87,10 @@ ClassTransformer.prototype.run = function () {
var constructorName = null;
// when class has no parent and there is only constructor or nothing then
// constructor is not wrapped in closure and has to be named
if (!this.hasSuper && this.node.body.body.length <= 1) {
var containsOnlyConstructor = classBody.length === 1 &&
classBody[0].key.name === "constructor";
if (!this.hasSuper && (classBody.length === 0 ||
containsOnlyConstructor)) {
constructorName = className;
}