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propTypeCompositionHandler.js
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propTypeCompositionHandler.js
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/**
* 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.
*
* @flow
*/
import { namedTypes as t } from 'ast-types';
import getMemberValuePath from '../utils/getMemberValuePath';
import resolveToModule from '../utils/resolveToModule';
import resolveToValue from '../utils/resolveToValue';
import type Documentation from '../Documentation';
/**
* It resolves the path to its module name and adds it to the "composes" entry
* in the documentation.
*/
function amendComposes(documentation, path) {
const moduleName = resolveToModule(path);
if (moduleName) {
documentation.addComposes(moduleName);
}
}
function processObjectExpression(documentation, path) {
path.get('properties').each(function(propertyPath) {
switch (propertyPath.node.type) {
case t.SpreadElement.name:
amendComposes(
documentation,
resolveToValue(propertyPath.get('argument')),
);
break;
}
});
}
export default function propTypeCompositionHandler(
documentation: Documentation,
path: NodePath,
) {
let propTypesPath = getMemberValuePath(path, 'propTypes');
if (!propTypesPath) {
return;
}
propTypesPath = resolveToValue(propTypesPath);
if (!propTypesPath) {
return;
}
switch (propTypesPath.node.type) {
case t.ObjectExpression.name:
processObjectExpression(documentation, propTypesPath);
break;
default:
amendComposes(documentation, propTypesPath);
break;
}
}