mirror of
https://github.com/idanoo/GoScrobble.git
synced 2024-11-22 16:35:14 +00:00
79 lines
2.6 KiB
JavaScript
79 lines
2.6 KiB
JavaScript
"use strict";
|
|
|
|
var _interopRequireWildcard = require("@babel/runtime/helpers/interopRequireWildcard");
|
|
|
|
exports.__esModule = true;
|
|
exports["default"] = replaceShorthandObjectMethod;
|
|
|
|
var util = _interopRequireWildcard(require("./util"));
|
|
|
|
/**
|
|
* Copyright (c) 2014-present, Facebook, Inc.
|
|
*
|
|
* This source code is licensed under the MIT license found in the
|
|
* LICENSE file in the root directory of this source tree.
|
|
*/
|
|
// this function converts a shorthand object generator method into a normal
|
|
// (non-shorthand) object property which is a generator function expression. for
|
|
// example, this:
|
|
//
|
|
// var foo = {
|
|
// *bar(baz) { return 5; }
|
|
// }
|
|
//
|
|
// should be replaced with:
|
|
//
|
|
// var foo = {
|
|
// bar: function*(baz) { return 5; }
|
|
// }
|
|
//
|
|
// to do this, it clones the parameter array and the body of the object generator
|
|
// method into a new FunctionExpression.
|
|
//
|
|
// this method can be passed any Function AST node path, and it will return
|
|
// either:
|
|
// a) the path that was passed in (iff the path did not need to be replaced) or
|
|
// b) the path of the new FunctionExpression that was created as a replacement
|
|
// (iff the path did need to be replaced)
|
|
//
|
|
// In either case, though, the caller can count on the fact that the return value
|
|
// is a Function AST node path.
|
|
//
|
|
// If this function is called with an AST node path that is not a Function (or with an
|
|
// argument that isn't an AST node path), it will throw an error.
|
|
function replaceShorthandObjectMethod(path) {
|
|
var t = util.getTypes();
|
|
|
|
if (!path.node || !t.isFunction(path.node)) {
|
|
throw new Error("replaceShorthandObjectMethod can only be called on Function AST node paths.");
|
|
} // this function only replaces shorthand object methods (called ObjectMethod
|
|
// in Babel-speak).
|
|
|
|
|
|
if (!t.isObjectMethod(path.node)) {
|
|
return path;
|
|
} // this function only replaces generators.
|
|
|
|
|
|
if (!path.node.generator) {
|
|
return path;
|
|
}
|
|
|
|
var parameters = path.node.params.map(function (param) {
|
|
return t.cloneDeep(param);
|
|
});
|
|
var functionExpression = t.functionExpression(null, // id
|
|
parameters, // params
|
|
t.cloneDeep(path.node.body), // body
|
|
path.node.generator, path.node.async);
|
|
util.replaceWithOrRemove(path, t.objectProperty(t.cloneDeep(path.node.key), // key
|
|
functionExpression, //value
|
|
path.node.computed, // computed
|
|
false // shorthand
|
|
)); // path now refers to the ObjectProperty AST node path, but we want to return a
|
|
// Function AST node path for the function expression we created. we know that
|
|
// the FunctionExpression we just created is the value of the ObjectProperty,
|
|
// so return the "value" path off of this path.
|
|
|
|
return path.get("value");
|
|
} |