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rOACCT/node_modules/react-docgen/dist/handlers/defaultPropsHandler.js
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defaultPropsHandler.js
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			"use strict";

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

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

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

			var _getPropertyName = _interopRequireDefault(require("../utils/getPropertyName"));

			var _getMemberValuePath = _interopRequireDefault(require("../utils/getMemberValuePath"));

			var _printValue = _interopRequireDefault(require("../utils/printValue"));

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

			var _resolveFunctionDefinitionToReturnValue = _interopRequireDefault(require("../utils/resolveFunctionDefinitionToReturnValue"));

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

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

			/**
			* 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.
			*
			*
			*/
			function getDefaultValue(path) {
			let node = path.node;
			let defaultValue;

			if (_astTypes.namedTypes.Literal.check(node)) {
			defaultValue = node.raw;
			} else {
			if (_astTypes.namedTypes.AssignmentPattern.check(path.node)) {
			path = (0, _resolveToValue.default)(path.get('right'));
			} else {
			path = (0, _resolveToValue.default)(path);
			}

			if (_astTypes.namedTypes.ImportDeclaration.check(path.node)) {
			defaultValue = node.name;
			} else {
			node = path.node;
			defaultValue = (0, _printValue.default)(path);
			}
			}

			if (typeof defaultValue !== 'undefined') {
			return {
			value: defaultValue,
			computed: _astTypes.namedTypes.CallExpression.check(node) \|\| _astTypes.namedTypes.MemberExpression.check(node) \|\| _astTypes.namedTypes.Identifier.check(node)
			};
			}

			return null;
			}

			function getStatelessPropsPath(componentDefinition) {
			let value = (0, _resolveToValue.default)(componentDefinition);

			if ((0, _isReactForwardRefCall.default)(value)) {
			value = (0, _resolveToValue.default)(value.get('arguments', 0));
			}

			return value.get('params', 0);
			}

			function getDefaultPropsPath(componentDefinition) {
			let defaultPropsPath = (0, _getMemberValuePath.default)(componentDefinition, 'defaultProps');

			if (!defaultPropsPath) {
			return null;
			}

			defaultPropsPath = (0, _resolveToValue.default)(defaultPropsPath);

			if (!defaultPropsPath) {
			return null;
			}

			if (_astTypes.namedTypes.FunctionExpression.check(defaultPropsPath.node)) {
			// Find the value that is returned from the function and process it if it is
			// an object literal.
			const returnValue = (0, _resolveFunctionDefinitionToReturnValue.default)(defaultPropsPath);

			if (returnValue && _astTypes.namedTypes.ObjectExpression.check(returnValue.node)) {
			defaultPropsPath = returnValue;
			}
			}

			return defaultPropsPath;
			}

			function getDefaultValuesFromProps(properties, documentation, isStateless) {
			properties // Don't evaluate property if component is functional and the node is not an AssignmentPattern
			.filter(propertyPath => !isStateless \|\| _astTypes.namedTypes.AssignmentPattern.check(propertyPath.get('value').node)).forEach(propertyPath => {
			if (_astTypes.namedTypes.Property.check(propertyPath.node)) {
			const propName = (0, _getPropertyName.default)(propertyPath);
			if (!propName) return;
			const propDescriptor = documentation.getPropDescriptor(propName);
			const defaultValue = getDefaultValue(isStateless ? propertyPath.get('value', 'right') : propertyPath.get('value'));

			if (defaultValue) {
			propDescriptor.defaultValue = defaultValue;
			}
			} else if (_astTypes.namedTypes.SpreadElement.check(propertyPath.node)) {
			const resolvedValuePath = (0, _resolveToValue.default)(propertyPath.get('argument'));

			if (_astTypes.namedTypes.ObjectExpression.check(resolvedValuePath.node)) {
			getDefaultValuesFromProps(resolvedValuePath.get('properties'), documentation, isStateless);
			}
			}
			});
			}

			function defaultPropsHandler(documentation, componentDefinition) {
			let statelessProps = null;
			const defaultPropsPath = getDefaultPropsPath(componentDefinition);
			/**
			* function, lazy, memo, forwardRef etc components can resolve default props as well
			*/

			if (!(0, _isReactComponentClass.default)(componentDefinition)) {
			statelessProps = getStatelessPropsPath(componentDefinition);
			} // Do both statelessProps and defaultProps if both are available so defaultProps can override


			if (statelessProps && _astTypes.namedTypes.ObjectPattern.check(statelessProps.node)) {
			getDefaultValuesFromProps(statelessProps.get('properties'), documentation, true);
			}

			if (defaultPropsPath && _astTypes.namedTypes.ObjectExpression.check(defaultPropsPath.node)) {
			getDefaultValuesFromProps(defaultPropsPath.get('properties'), documentation, false);
			}
			}