Files
babel/packages/babel-helper-optimise-call-expression/src/index.js
2017-02-04 11:07:15 -05:00

18 lines
501 B
JavaScript

import * as t from "babel-types";
export default function (callee, thisNode, args) {
if (args.length === 1 && t.isSpreadElement(args[0]) &&
t.isIdentifier(args[0].argument, { name: "arguments" })) {
// eg. super(...arguments);
return t.callExpression(
t.memberExpression(callee, t.identifier("apply")),
[thisNode, args[0].argument]
);
} else {
return t.callExpression(
t.memberExpression(callee, t.identifier("call")),
[thisNode, ...args]
);
}
}