babel/lib/6to5/transformation/transformers/playground-method-binding.js
Sebastian McKenzie d184bc93b9 add playground
2014-11-25 23:50:50 +11:00

31 lines
675 B
JavaScript

var t = require("../../types");
exports.BindMemberExpression = function (node, parent, file, scope) {
var object = node.object;
var prop = node.property;
var temp;
if (t.isDynamic(object)) {
var tempName = file.generateUid("temp", scope);
temp = object = t.identifier(tempName);
scope.push({
key: tempName,
id: temp
});
}
var call = t.callExpression(
t.memberExpression(t.memberExpression(object, prop), t.identifier("bind")),
[object].concat(node.arguments)
);
if (temp) {
return t.sequenceExpression([
t.assignmentExpression("=", temp, node.object),
call
]);
} else {
return call;
}
};