0x1998 - MANAGER

Düzenlenen Dosya: getVisitorKeys.js.flow

/** * Copyright (c) Meta Platforms, Inc. and affiliates. * * This source code is licensed under the MIT license found in the * LICENSE file in the root directory of this source tree. * * @flow strict * @noformat */ 'use strict'; import type {ESNode} from 'hermes-estree'; import type {VisitorKeys as VisitorKeysType} from '../generated/ESTreeVisitorKeys'; import FlowVisitorKeys from '../generated/ESTreeVisitorKeys'; export function isNode(thing: mixed) /*: implies thing is {+[string]: mixed} */ { return ( typeof thing === 'object' && thing != null && typeof thing.type === 'string' ); } export type {VisitorKeysType}; export function getVisitorKeys<T: ESNode>( node: T, visitorKeys?: ?VisitorKeysType, ): $ReadOnlyArray<$Keys<T>> { const keys = (visitorKeys ?? FlowVisitorKeys)[node.type]; if (keys == null) { throw new Error(`No visitor keys found for node type "${node.type}".`); } // $FlowExpectedError[prop-missing] return keys; }
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