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rOACCT/node_modules/react-docgen/dist/resolver/findExportedComponentDefinition.js
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findExportedComponentDefinition.js
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			"use strict";

			var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

			Object.defineProperty(exports, "__esModule", {
			value: true
			});
			exports.default = findExportedComponentDefinition;

			var _astTypes = require("ast-types");

			var _isExportsOrModuleAssignment = _interopRequireDefault(require("../utils/isExportsOrModuleAssignment"));

			var _isReactComponentClass = _interopRequireDefault(require("../utils/isReactComponentClass"));

			var _isReactCreateClassCall = _interopRequireDefault(require("../utils/isReactCreateClassCall"));

			var _isReactForwardRefCall = _interopRequireDefault(require("../utils/isReactForwardRefCall"));

			var _isStatelessComponent = _interopRequireDefault(require("../utils/isStatelessComponent"));

			var _normalizeClassDefinition = _interopRequireDefault(require("../utils/normalizeClassDefinition"));

			var _resolveExportDeclaration = _interopRequireDefault(require("../utils/resolveExportDeclaration"));

			var _resolveToValue = _interopRequireDefault(require("../utils/resolveToValue"));

			var _resolveHOC = _interopRequireDefault(require("../utils/resolveHOC"));

			/**
			* Copyright (c) Facebook, Inc. and its affiliates.
			*
			* This source code is licensed under the MIT license found in the
			* LICENSE file in the root directory of this source tree.
			*
			*
			*/
			const ERROR_MULTIPLE_DEFINITIONS = 'Multiple exported component definitions found.';

			function ignore() {
			return false;
			}

			function isComponentDefinition(path) {
			return (0, _isReactCreateClassCall.default)(path) \|\| (0, _isReactComponentClass.default)(path) \|\| (0, _isStatelessComponent.default)(path) \|\| (0, _isReactForwardRefCall.default)(path);
			}

			function resolveDefinition(definition) {
			if ((0, _isReactCreateClassCall.default)(definition)) {
			// return argument
			const resolvedPath = (0, _resolveToValue.default)(definition.get('arguments', 0));

			if (_astTypes.namedTypes.ObjectExpression.check(resolvedPath.node)) {
			return resolvedPath;
			}
			} else if ((0, _isReactComponentClass.default)(definition)) {
			(0, _normalizeClassDefinition.default)(definition);
			return definition;
			} else if ((0, _isStatelessComponent.default)(definition) \|\| (0, _isReactForwardRefCall.default)(definition)) {
			return definition;
			}

			return null;
			}
			/**
			* Given an AST, this function tries to find the exported component definition.
			*
			* The component definition is either the ObjectExpression passed to
			* `React.createClass` or a `class` definition extending `React.Component` or
			* having a `render()` method.
			*
			* If a definition is part of the following statements, it is considered to be
			* exported:
			*
			* modules.exports = Definition;
			* exports.foo = Definition;
			* export default Definition;
			* export var Definition = ...;
			*/


			function findExportedComponentDefinition(ast) {
			let foundDefinition;

			function exportDeclaration(path) {
			const definitions = (0, _resolveExportDeclaration.default)(path).reduce((acc, definition) => {
			if (isComponentDefinition(definition)) {
			acc.push(definition);
			} else {
			const resolved = (0, _resolveToValue.default)((0, _resolveHOC.default)(definition));

			if (isComponentDefinition(resolved)) {
			acc.push(resolved);
			}
			}

			return acc;
			}, []);

			if (definitions.length === 0) {
			return false;
			}

			if (definitions.length > 1 \|\| foundDefinition) {
			// If a file exports multiple components, ... complain!
			throw new Error(ERROR_MULTIPLE_DEFINITIONS);
			}

			foundDefinition = resolveDefinition(definitions[0]);
			return false;
			}

			(0, _astTypes.visit)(ast, {
			visitFunctionDeclaration: ignore,
			visitFunctionExpression: ignore,
			visitClassDeclaration: ignore,
			visitClassExpression: ignore,
			visitIfStatement: ignore,
			visitWithStatement: ignore,
			visitSwitchStatement: ignore,
			visitWhileStatement: ignore,
			visitDoWhileStatement: ignore,
			visitForStatement: ignore,
			visitForInStatement: ignore,
			visitForOfStatement: ignore,
			visitImportDeclaration: ignore,
			visitExportNamedDeclaration: exportDeclaration,
			visitExportDefaultDeclaration: exportDeclaration,
			visitAssignmentExpression: function (path) {
			// Ignore anything that is not `exports.X = ...;` or
			// `module.exports = ...;`
			if (!(0, _isExportsOrModuleAssignment.default)(path)) {
			return false;
			} // Resolve the value of the right hand side. It should resolve to a call
			// expression, something like React.createClass


			path = (0, _resolveToValue.default)(path.get('right'));

			if (!isComponentDefinition(path)) {
			path = (0, _resolveToValue.default)((0, _resolveHOC.default)(path));

			if (!isComponentDefinition(path)) {
			return false;
			}
			}

			if (foundDefinition) {
			// If a file exports multiple components, ... complain!
			throw new Error(ERROR_MULTIPLE_DEFINITIONS);
			}

			foundDefinition = resolveDefinition(path);
			return false;
			}
			});
			return foundDefinition;
			}