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rOACCT/node_modules/regenerator-transform/lib/replaceShorthandObjectMethod.js
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replaceShorthandObjectMethod.js
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"use strict";
exports.__esModule = true;
exports["default"] = replaceShorthandObjectMethod;
var util = _interopRequireWildcard(require("./util"));
function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { "default": obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj["default"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
/**
* 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");
}
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