37 lines
1000 B
JavaScript
37 lines
1000 B
JavaScript
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/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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*
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* @noformat
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*/
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'use strict';
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.getVisitorKeys = getVisitorKeys;
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exports.isNode = isNode;
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var _ESTreeVisitorKeys = _interopRequireDefault(require("../generated/ESTreeVisitorKeys"));
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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function isNode(thing)
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/*: implies thing is {+[string]: mixed} */
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{
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return typeof thing === 'object' && thing != null && typeof thing.type === 'string';
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}
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function getVisitorKeys(node, visitorKeys) {
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const keys = (visitorKeys != null ? visitorKeys : _ESTreeVisitorKeys.default)[node.type];
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if (keys == null) {
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throw new Error(`No visitor keys found for node type "${node.type}".`);
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} // $FlowExpectedError[prop-missing]
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return keys;
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}
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