816 lines
24 KiB
JavaScript
816 lines
24 KiB
JavaScript
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/**
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* @fileoverview Utility class and functions for React components detection
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* @author Yannick Croissant
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*/
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'use strict';
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const doctrine = require('doctrine');
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const arrayIncludes = require('array-includes');
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const variableUtil = require('./variable');
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const pragmaUtil = require('./pragma');
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const astUtil = require('./ast');
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const propTypesUtil = require('./propTypes');
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const jsxUtil = require('./jsx');
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const usedPropTypesUtil = require('./usedPropTypes');
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const defaultPropsUtil = require('./defaultProps');
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function getId(node) {
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return node && node.range.join(':');
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}
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function usedPropTypesAreEquivalent(propA, propB) {
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if (propA.name === propB.name) {
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if (!propA.allNames && !propB.allNames) {
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return true;
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}
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if (Array.isArray(propA.allNames) && Array.isArray(propB.allNames) && propA.allNames.join('') === propB.allNames.join('')) {
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return true;
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}
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return false;
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}
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return false;
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}
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function mergeUsedPropTypes(propsList, newPropsList) {
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const propsToAdd = [];
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newPropsList.forEach((newProp) => {
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const newPropisAlreadyInTheList = propsList.some(prop => usedPropTypesAreEquivalent(prop, newProp));
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if (!newPropisAlreadyInTheList) {
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propsToAdd.push(newProp);
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}
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});
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return propsList.concat(propsToAdd);
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}
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const Lists = new WeakMap();
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/**
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* Components
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*/
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class Components {
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constructor() {
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Lists.set(this, {});
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}
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/**
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* Add a node to the components list, or update it if it's already in the list
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*
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* @param {ASTNode} node The AST node being added.
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* @param {Number} confidence Confidence in the component detection (0=banned, 1=maybe, 2=yes)
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* @returns {Object} Added component object
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*/
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add(node, confidence) {
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const id = getId(node);
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const list = Lists.get(this);
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if (list[id]) {
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if (confidence === 0 || list[id].confidence === 0) {
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list[id].confidence = 0;
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} else {
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list[id].confidence = Math.max(list[id].confidence, confidence);
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}
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return list[id];
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}
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list[id] = {
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node,
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confidence
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};
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return list[id];
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}
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/**
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* Find a component in the list using its node
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*
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* @param {ASTNode} node The AST node being searched.
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* @returns {Object} Component object, undefined if the component is not found or has confidence value of 0.
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*/
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get(node) {
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const id = getId(node);
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const item = Lists.get(this)[id];
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if (item && item.confidence >= 1) {
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return item;
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}
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return null;
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}
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/**
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* Update a component in the list
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*
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* @param {ASTNode} node The AST node being updated.
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* @param {Object} props Additional properties to add to the component.
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*/
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set(node, props) {
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const list = Lists.get(this);
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let component = list[getId(node)];
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while (!component) {
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node = node.parent;
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if (!node) {
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return;
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}
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component = list[getId(node)];
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}
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Object.assign(
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component,
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props,
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{
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usedPropTypes: mergeUsedPropTypes(
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component.usedPropTypes || [],
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props.usedPropTypes || []
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)
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}
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);
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}
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/**
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* Return the components list
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* Components for which we are not confident are not returned
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*
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* @returns {Object} Components list
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*/
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list() {
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const thisList = Lists.get(this);
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const list = {};
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const usedPropTypes = {};
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// Find props used in components for which we are not confident
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Object.keys(thisList).filter(i => thisList[i].confidence < 2).forEach((i) => {
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let component = null;
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let node = null;
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node = thisList[i].node;
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while (!component && node.parent) {
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node = node.parent;
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// Stop moving up if we reach a decorator
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if (node.type === 'Decorator') {
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break;
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}
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component = this.get(node);
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}
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if (component) {
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const newUsedProps = (thisList[i].usedPropTypes || []).filter(propType => !propType.node || propType.node.kind !== 'init');
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const componentId = getId(component.node);
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usedPropTypes[componentId] = mergeUsedPropTypes(usedPropTypes[componentId] || [], newUsedProps);
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}
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});
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// Assign used props in not confident components to the parent component
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Object.keys(thisList).filter(j => thisList[j].confidence >= 2).forEach((j) => {
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const id = getId(thisList[j].node);
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list[j] = thisList[j];
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if (usedPropTypes[id]) {
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list[j].usedPropTypes = mergeUsedPropTypes(list[j].usedPropTypes || [], usedPropTypes[id]);
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}
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});
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return list;
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}
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/**
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* Return the length of the components list
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* Components for which we are not confident are not counted
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*
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* @returns {Number} Components list length
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*/
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length() {
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const list = Lists.get(this);
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return Object.keys(list).filter(i => list[i].confidence >= 2).length;
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}
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}
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function componentRule(rule, context) {
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const createClass = pragmaUtil.getCreateClassFromContext(context);
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const pragma = pragmaUtil.getFromContext(context);
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const sourceCode = context.getSourceCode();
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const components = new Components();
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// Utilities for component detection
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const utils = {
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/**
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* Check if the node is a React ES5 component
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*
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* @param {ASTNode} node The AST node being checked.
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* @returns {Boolean} True if the node is a React ES5 component, false if not
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*/
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isES5Component(node) {
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if (!node.parent) {
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return false;
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}
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return new RegExp(`^(${pragma}\\.)?${createClass}$`).test(sourceCode.getText(node.parent.callee));
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},
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/**
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* Check if the node is a React ES6 component
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*
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* @param {ASTNode} node The AST node being checked.
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* @returns {Boolean} True if the node is a React ES6 component, false if not
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*/
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isES6Component(node) {
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if (utils.isExplicitComponent(node)) {
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return true;
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}
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if (!node.superClass) {
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return false;
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}
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return new RegExp(`^(${pragma}\\.)?(Pure)?Component$`).test(sourceCode.getText(node.superClass));
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},
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/**
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* Check if the node is explicitly declared as a descendant of a React Component
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*
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* @param {ASTNode} node The AST node being checked (can be a ReturnStatement or an ArrowFunctionExpression).
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* @returns {Boolean} True if the node is explicitly declared as a descendant of a React Component, false if not
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*/
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isExplicitComponent(node) {
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let comment;
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// Sometimes the passed node may not have been parsed yet by eslint, and this function call crashes.
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// Can be removed when eslint sets "parent" property for all nodes on initial AST traversal: https://github.com/eslint/eslint-scope/issues/27
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// eslint-disable-next-line no-warning-comments
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// FIXME: Remove try/catch when https://github.com/eslint/eslint-scope/issues/27 is implemented.
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try {
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comment = sourceCode.getJSDocComment(node);
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} catch (e) {
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comment = null;
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}
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if (comment === null) {
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return false;
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}
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const commentAst = doctrine.parse(comment.value, {
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unwrap: true,
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tags: ['extends', 'augments']
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});
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const relevantTags = commentAst.tags.filter(tag => tag.name === 'React.Component' || tag.name === 'React.PureComponent');
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return relevantTags.length > 0;
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},
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/**
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* Checks to see if our component extends React.PureComponent
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*
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* @param {ASTNode} node The AST node being checked.
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* @returns {Boolean} True if node extends React.PureComponent, false if not
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*/
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isPureComponent(node) {
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if (node.superClass) {
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return new RegExp(`^(${pragma}\\.)?PureComponent$`).test(sourceCode.getText(node.superClass));
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}
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return false;
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},
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/**
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* Check if variable is destructured from pragma import
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*
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* @param {string} variable The variable name to check
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* @returns {Boolean} True if createElement is destructured from the pragma
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*/
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isDestructuredFromPragmaImport(variable) {
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const variables = variableUtil.variablesInScope(context);
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const variableInScope = variableUtil.getVariable(variables, variable);
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if (variableInScope) {
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const map = variableInScope.scope.set;
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return map.has(pragma);
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}
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return false;
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},
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/**
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* Checks to see if node is called within createElement from pragma
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*
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* @param {ASTNode} node The AST node being checked.
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* @returns {Boolean} True if createElement called from pragma
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*/
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isCreateElement(node) {
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const calledOnPragma = (
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node &&
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node.callee &&
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node.callee.object &&
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node.callee.object.name === pragma &&
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node.callee.property &&
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node.callee.property.name === 'createElement'
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);
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const calledDirectly = (
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node &&
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node.callee &&
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node.callee.name === 'createElement'
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);
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if (this.isDestructuredFromPragmaImport('createElement')) {
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return calledDirectly || calledOnPragma;
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}
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return calledOnPragma;
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},
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/**
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* Check if we are in a class constructor
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* @return {boolean} true if we are in a class constructor, false if not
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*/
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inConstructor() {
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let scope = context.getScope();
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while (scope) {
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if (scope.block && scope.block.parent && scope.block.parent.kind === 'constructor') {
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return true;
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}
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scope = scope.upper;
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}
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return false;
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},
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/**
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* Determine if the node is MemberExpression of `this.state`
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* @param {Object} node The node to process
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* @returns {Boolean}
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*/
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isStateMemberExpression(node) {
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return node.type === 'MemberExpression' && node.object.type === 'ThisExpression' && node.property.name === 'state';
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},
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getReturnPropertyAndNode(ASTnode) {
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let property;
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let node = ASTnode;
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switch (node.type) {
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case 'ReturnStatement':
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property = 'argument';
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break;
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case 'ArrowFunctionExpression':
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property = 'body';
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if (node[property] && node[property].type === 'BlockStatement') {
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node = utils.findReturnStatement(node);
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property = 'argument';
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}
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break;
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default:
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node = utils.findReturnStatement(node);
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property = 'argument';
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}
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return {
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node,
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property
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};
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},
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/**
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* Check if the node is returning JSX
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*
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* @param {ASTNode} ASTnode The AST node being checked
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* @param {Boolean} [strict] If true, in a ternary condition the node must return JSX in both cases
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* @returns {Boolean} True if the node is returning JSX, false if not
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*/
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isReturningJSX(ASTnode, strict) {
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const nodeAndProperty = utils.getReturnPropertyAndNode(ASTnode);
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const node = nodeAndProperty.node;
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const property = nodeAndProperty.property;
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if (!node) {
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return false;
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}
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const returnsConditionalJSXConsequent = node[property] &&
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node[property].type === 'ConditionalExpression' &&
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jsxUtil.isJSX(node[property].consequent);
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const returnsConditionalJSXAlternate = node[property] &&
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node[property].type === 'ConditionalExpression' &&
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jsxUtil.isJSX(node[property].alternate);
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const returnsConditionalJSX = strict ?
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(returnsConditionalJSXConsequent && returnsConditionalJSXAlternate) :
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(returnsConditionalJSXConsequent || returnsConditionalJSXAlternate);
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const returnsJSX = node[property] &&
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jsxUtil.isJSX(node[property]);
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const returnsPragmaCreateElement = this.isCreateElement(node[property]);
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return Boolean(
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returnsConditionalJSX ||
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returnsJSX ||
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returnsPragmaCreateElement
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);
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},
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/**
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||
|
|
* Check if the node is returning null
|
||
|
|
*
|
||
|
|
* @param {ASTNode} ASTnode The AST node being checked
|
||
|
|
* @returns {Boolean} True if the node is returning null, false if not
|
||
|
|
*/
|
||
|
|
isReturningNull(ASTnode) {
|
||
|
|
const nodeAndProperty = utils.getReturnPropertyAndNode(ASTnode);
|
||
|
|
const property = nodeAndProperty.property;
|
||
|
|
const node = nodeAndProperty.node;
|
||
|
|
|
||
|
|
if (!node) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
return node[property] && node[property].value === null;
|
||
|
|
},
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check if the node is returning JSX or null
|
||
|
|
*
|
||
|
|
* @param {ASTNode} ASTnode The AST node being checked
|
||
|
|
* @param {Boolean} [strict] If true, in a ternary condition the node must return JSX in both cases
|
||
|
|
* @returns {Boolean} True if the node is returning JSX or null, false if not
|
||
|
|
*/
|
||
|
|
isReturningJSXOrNull(ASTNode, strict) {
|
||
|
|
return utils.isReturningJSX(ASTNode, strict) || utils.isReturningNull(ASTNode);
|
||
|
|
},
|
||
|
|
|
||
|
|
getPragmaComponentWrapper(node) {
|
||
|
|
let isPragmaComponentWrapper;
|
||
|
|
let currentNode = node;
|
||
|
|
let prevNode;
|
||
|
|
do {
|
||
|
|
currentNode = currentNode.parent;
|
||
|
|
isPragmaComponentWrapper = this.isPragmaComponentWrapper(currentNode);
|
||
|
|
if (isPragmaComponentWrapper) {
|
||
|
|
prevNode = currentNode;
|
||
|
|
}
|
||
|
|
} while (isPragmaComponentWrapper);
|
||
|
|
|
||
|
|
return prevNode;
|
||
|
|
},
|
||
|
|
|
||
|
|
isPragmaComponentWrapper(node) {
|
||
|
|
if (!node || node.type !== 'CallExpression') {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
const propertyNames = ['forwardRef', 'memo'];
|
||
|
|
const calleeObject = node.callee.object;
|
||
|
|
if (calleeObject && node.callee.property) {
|
||
|
|
return arrayIncludes(propertyNames, node.callee.property.name) && calleeObject.name === pragma;
|
||
|
|
}
|
||
|
|
return arrayIncludes(propertyNames, node.callee.name) && this.isDestructuredFromPragmaImport(node.callee.name);
|
||
|
|
},
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Find a return statment in the current node
|
||
|
|
*
|
||
|
|
* @param {ASTNode} ASTnode The AST node being checked
|
||
|
|
*/
|
||
|
|
findReturnStatement: astUtil.findReturnStatement,
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the parent component node from the current scope
|
||
|
|
*
|
||
|
|
* @returns {ASTNode} component node, null if we are not in a component
|
||
|
|
*/
|
||
|
|
getParentComponent() {
|
||
|
|
return (
|
||
|
|
utils.getParentES6Component() ||
|
||
|
|
utils.getParentES5Component() ||
|
||
|
|
utils.getParentStatelessComponent()
|
||
|
|
);
|
||
|
|
},
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the parent ES5 component node from the current scope
|
||
|
|
*
|
||
|
|
* @returns {ASTNode} component node, null if we are not in a component
|
||
|
|
*/
|
||
|
|
getParentES5Component() {
|
||
|
|
let scope = context.getScope();
|
||
|
|
while (scope) {
|
||
|
|
const node = scope.block && scope.block.parent && scope.block.parent.parent;
|
||
|
|
if (node && utils.isES5Component(node)) {
|
||
|
|
return node;
|
||
|
|
}
|
||
|
|
scope = scope.upper;
|
||
|
|
}
|
||
|
|
return null;
|
||
|
|
},
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the parent ES6 component node from the current scope
|
||
|
|
*
|
||
|
|
* @returns {ASTNode} component node, null if we are not in a component
|
||
|
|
*/
|
||
|
|
getParentES6Component() {
|
||
|
|
let scope = context.getScope();
|
||
|
|
while (scope && scope.type !== 'class') {
|
||
|
|
scope = scope.upper;
|
||
|
|
}
|
||
|
|
const node = scope && scope.block;
|
||
|
|
if (!node || !utils.isES6Component(node)) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
return node;
|
||
|
|
},
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the parent stateless component node from the current scope
|
||
|
|
*
|
||
|
|
* @returns {ASTNode} component node, null if we are not in a component
|
||
|
|
*/
|
||
|
|
getParentStatelessComponent() {
|
||
|
|
let scope = context.getScope();
|
||
|
|
while (scope) {
|
||
|
|
const node = scope.block;
|
||
|
|
const isFunction = /Function/.test(node.type); // Functions
|
||
|
|
const isArrowFunction = astUtil.isArrowFunction(node);
|
||
|
|
const enclosingScope = isArrowFunction ? utils.getArrowFunctionScope(scope) : scope;
|
||
|
|
const enclosingScopeParent = enclosingScope && enclosingScope.block.parent;
|
||
|
|
const isClass = enclosingScope && astUtil.isClass(enclosingScope.block);
|
||
|
|
const isMethod = enclosingScopeParent && enclosingScopeParent.type === 'MethodDefinition'; // Classes methods
|
||
|
|
const isArgument = node.parent && node.parent.type === 'CallExpression'; // Arguments (callback, etc.)
|
||
|
|
// Attribute Expressions inside JSX Elements (<button onClick={() => props.handleClick()}></button>)
|
||
|
|
const isJSXExpressionContainer = node.parent && node.parent.type === 'JSXExpressionContainer';
|
||
|
|
const pragmaComponentWrapper = this.getPragmaComponentWrapper(node);
|
||
|
|
if (isFunction && pragmaComponentWrapper) {
|
||
|
|
return pragmaComponentWrapper;
|
||
|
|
}
|
||
|
|
// Stop moving up if we reach a class or an argument (like a callback)
|
||
|
|
if (isClass || isArgument) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
// Return the node if it is a function that is not a class method and is not inside a JSX Element
|
||
|
|
if (isFunction && !isMethod && !isJSXExpressionContainer && utils.isReturningJSXOrNull(node)) {
|
||
|
|
return node;
|
||
|
|
}
|
||
|
|
scope = scope.upper;
|
||
|
|
}
|
||
|
|
return null;
|
||
|
|
},
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get an enclosing scope used to find `this` value by an arrow function
|
||
|
|
* @param {Scope} scope Current scope
|
||
|
|
* @returns {Scope} An enclosing scope used by an arrow function
|
||
|
|
*/
|
||
|
|
getArrowFunctionScope(scope) {
|
||
|
|
scope = scope.upper;
|
||
|
|
while (scope) {
|
||
|
|
if (astUtil.isFunction(scope.block) || astUtil.isClass(scope.block)) {
|
||
|
|
return scope;
|
||
|
|
}
|
||
|
|
scope = scope.upper;
|
||
|
|
}
|
||
|
|
return null;
|
||
|
|
},
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the related component from a node
|
||
|
|
*
|
||
|
|
* @param {ASTNode} node The AST node being checked (must be a MemberExpression).
|
||
|
|
* @returns {ASTNode} component node, null if we cannot find the component
|
||
|
|
*/
|
||
|
|
getRelatedComponent(node) {
|
||
|
|
let i;
|
||
|
|
let j;
|
||
|
|
let k;
|
||
|
|
let l;
|
||
|
|
let componentNode;
|
||
|
|
// Get the component path
|
||
|
|
const componentPath = [];
|
||
|
|
while (node) {
|
||
|
|
if (node.property && node.property.type === 'Identifier') {
|
||
|
|
componentPath.push(node.property.name);
|
||
|
|
}
|
||
|
|
if (node.object && node.object.type === 'Identifier') {
|
||
|
|
componentPath.push(node.object.name);
|
||
|
|
}
|
||
|
|
node = node.object;
|
||
|
|
}
|
||
|
|
componentPath.reverse();
|
||
|
|
const componentName = componentPath.slice(0, componentPath.length - 1).join('.');
|
||
|
|
|
||
|
|
// Find the variable in the current scope
|
||
|
|
const variableName = componentPath.shift();
|
||
|
|
if (!variableName) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
let variableInScope;
|
||
|
|
const variables = variableUtil.variablesInScope(context);
|
||
|
|
for (i = 0, j = variables.length; i < j; i++) {
|
||
|
|
if (variables[i].name === variableName) {
|
||
|
|
variableInScope = variables[i];
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (!variableInScope) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Try to find the component using variable references
|
||
|
|
const refs = variableInScope.references;
|
||
|
|
refs.some((ref) => {
|
||
|
|
let refId = ref.identifier;
|
||
|
|
if (refId.parent && refId.parent.type === 'MemberExpression') {
|
||
|
|
refId = refId.parent;
|
||
|
|
}
|
||
|
|
if (sourceCode.getText(refId) !== componentName) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
if (refId.type === 'MemberExpression') {
|
||
|
|
componentNode = refId.parent.right;
|
||
|
|
} else if (
|
||
|
|
refId.parent &&
|
||
|
|
refId.parent.type === 'VariableDeclarator' &&
|
||
|
|
refId.parent.init &&
|
||
|
|
refId.parent.init.type !== 'Identifier'
|
||
|
|
) {
|
||
|
|
componentNode = refId.parent.init;
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
});
|
||
|
|
|
||
|
|
if (componentNode) {
|
||
|
|
// Return the component
|
||
|
|
return components.add(componentNode, 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Try to find the component using variable declarations
|
||
|
|
const defs = variableInScope.defs;
|
||
|
|
const defInScope = defs.find(def => (
|
||
|
|
def.type === 'ClassName' ||
|
||
|
|
def.type === 'FunctionName' ||
|
||
|
|
def.type === 'Variable'
|
||
|
|
));
|
||
|
|
if (!defInScope || !defInScope.node) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
componentNode = defInScope.node.init || defInScope.node;
|
||
|
|
|
||
|
|
// Traverse the node properties to the component declaration
|
||
|
|
for (i = 0, j = componentPath.length; i < j; i++) {
|
||
|
|
if (!componentNode.properties) {
|
||
|
|
continue; // eslint-disable-line no-continue
|
||
|
|
}
|
||
|
|
for (k = 0, l = componentNode.properties.length; k < l; k++) {
|
||
|
|
if (componentNode.properties[k].key && componentNode.properties[k].key.name === componentPath[i]) {
|
||
|
|
componentNode = componentNode.properties[k];
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (!componentNode || !componentNode.value) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
componentNode = componentNode.value;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Return the component
|
||
|
|
return components.add(componentNode, 1);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
// Component detection instructions
|
||
|
|
const detectionInstructions = {
|
||
|
|
CallExpression(node) {
|
||
|
|
if (!utils.isPragmaComponentWrapper(node)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
if (node.arguments.length > 0 && astUtil.isFunctionLikeExpression(node.arguments[0])) {
|
||
|
|
components.add(node, 2);
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
ClassExpression(node) {
|
||
|
|
if (!utils.isES6Component(node)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
components.add(node, 2);
|
||
|
|
},
|
||
|
|
|
||
|
|
ClassDeclaration(node) {
|
||
|
|
if (!utils.isES6Component(node)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
components.add(node, 2);
|
||
|
|
},
|
||
|
|
|
||
|
|
ClassProperty(node) {
|
||
|
|
node = utils.getParentComponent();
|
||
|
|
if (!node) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
components.add(node, 2);
|
||
|
|
},
|
||
|
|
|
||
|
|
ObjectExpression(node) {
|
||
|
|
if (!utils.isES5Component(node)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
components.add(node, 2);
|
||
|
|
},
|
||
|
|
|
||
|
|
FunctionExpression(node) {
|
||
|
|
if (node.async) {
|
||
|
|
components.add(node, 0);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
const component = utils.getParentComponent();
|
||
|
|
if (
|
||
|
|
!component ||
|
||
|
|
(component.parent && component.parent.type === 'JSXExpressionContainer')
|
||
|
|
) {
|
||
|
|
// Ban the node if we cannot find a parent component
|
||
|
|
components.add(node, 0);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
components.add(component, 1);
|
||
|
|
},
|
||
|
|
|
||
|
|
FunctionDeclaration(node) {
|
||
|
|
if (node.async) {
|
||
|
|
components.add(node, 0);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
node = utils.getParentComponent();
|
||
|
|
if (!node) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
components.add(node, 1);
|
||
|
|
},
|
||
|
|
|
||
|
|
ArrowFunctionExpression(node) {
|
||
|
|
if (node.async) {
|
||
|
|
components.add(node, 0);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
const component = utils.getParentComponent();
|
||
|
|
if (
|
||
|
|
!component ||
|
||
|
|
(component.parent && component.parent.type === 'JSXExpressionContainer')
|
||
|
|
) {
|
||
|
|
// Ban the node if we cannot find a parent component
|
||
|
|
components.add(node, 0);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
if (component.expression && utils.isReturningJSX(component)) {
|
||
|
|
components.add(component, 2);
|
||
|
|
} else {
|
||
|
|
components.add(component, 1);
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
ThisExpression(node) {
|
||
|
|
const component = utils.getParentComponent();
|
||
|
|
if (!component || !/Function/.test(component.type) || !node.parent.property) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
// Ban functions accessing a property on a ThisExpression
|
||
|
|
components.add(node, 0);
|
||
|
|
},
|
||
|
|
|
||
|
|
ReturnStatement(node) {
|
||
|
|
if (!utils.isReturningJSX(node)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
node = utils.getParentComponent();
|
||
|
|
if (!node) {
|
||
|
|
const scope = context.getScope();
|
||
|
|
components.add(scope.block, 1);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
components.add(node, 2);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
// Update the provided rule instructions to add the component detection
|
||
|
|
const ruleInstructions = rule(context, components, utils);
|
||
|
|
const updatedRuleInstructions = Object.assign({}, ruleInstructions);
|
||
|
|
const propTypesInstructions = propTypesUtil(context, components, utils);
|
||
|
|
const usedPropTypesInstructions = usedPropTypesUtil(context, components, utils);
|
||
|
|
const defaultPropsInstructions = defaultPropsUtil(context, components, utils);
|
||
|
|
const allKeys = new Set(Object.keys(detectionInstructions).concat(
|
||
|
|
Object.keys(propTypesInstructions),
|
||
|
|
Object.keys(usedPropTypesInstructions),
|
||
|
|
Object.keys(defaultPropsInstructions)
|
||
|
|
));
|
||
|
|
|
||
|
|
allKeys.forEach((instruction) => {
|
||
|
|
updatedRuleInstructions[instruction] = function (node) {
|
||
|
|
if (instruction in detectionInstructions) {
|
||
|
|
detectionInstructions[instruction](node);
|
||
|
|
}
|
||
|
|
if (instruction in propTypesInstructions) {
|
||
|
|
propTypesInstructions[instruction](node);
|
||
|
|
}
|
||
|
|
if (instruction in usedPropTypesInstructions) {
|
||
|
|
usedPropTypesInstructions[instruction](node);
|
||
|
|
}
|
||
|
|
if (instruction in defaultPropsInstructions) {
|
||
|
|
defaultPropsInstructions[instruction](node);
|
||
|
|
}
|
||
|
|
if (ruleInstructions[instruction]) {
|
||
|
|
return ruleInstructions[instruction](node);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
});
|
||
|
|
|
||
|
|
// Return the updated rule instructions
|
||
|
|
return updatedRuleInstructions;
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = Object.assign(Components, {
|
||
|
|
detect(rule) {
|
||
|
|
return componentRule.bind(this, rule);
|
||
|
|
}
|
||
|
|
});
|