WIP - add extractor, generate snippet_data

node_modules/eslint-plugin-react/lib/rules/no-set-state.js

@@ -0,0 +1,83 @@
+/**
+ * @fileoverview Prevent usage of setState
+ * @author Mark Dalgleish
+ */
+
+'use strict';
+
+const Components = require('../util/Components');
+const docsUrl = require('../util/docsUrl');
+
+// ------------------------------------------------------------------------------
+// Rule Definition
+// ------------------------------------------------------------------------------
+
+module.exports = {
+  meta: {
+    docs: {
+      description: 'Prevent usage of setState',
+      category: 'Stylistic Issues',
+      recommended: false,
+      url: docsUrl('no-set-state')
+    },
+    schema: []
+  },
+
+  create: Components.detect((context, components, utils) => {
+    /**
+     * Checks if the component is valid
+     * @param {Object} component The component to process
+     * @returns {Boolean} True if the component is valid, false if not.
+     */
+    function isValid(component) {
+      return Boolean(component && !component.useSetState);
+    }
+
+    /**
+     * Reports usages of setState for a given component
+     * @param {Object} component The component to process
+     */
+    function reportSetStateUsages(component) {
+      let setStateUsage;
+      for (let i = 0, j = component.setStateUsages.length; i < j; i++) {
+        setStateUsage = component.setStateUsages[i];
+        context.report({
+          node: setStateUsage,
+          message: 'Do not use setState'
+        });
+      }
+    }
+
+    // --------------------------------------------------------------------------
+    // Public
+    // --------------------------------------------------------------------------
+
+    return {
+
+      CallExpression(node) {
+        const callee = node.callee;
+        if (
+          callee.type !== 'MemberExpression' ||
+          callee.object.type !== 'ThisExpression' ||
+          callee.property.name !== 'setState'
+        ) {
+          return;
+        }
+        const component = components.get(utils.getParentComponent());
+        const setStateUsages = component && component.setStateUsages || [];
+        setStateUsages.push(callee);
+        components.set(node, {
+          useSetState: true,
+          setStateUsages
+        });
+      },
+
+      'Program:exit': function () {
+        const list = components.list();
+        Object.keys(list).filter(component => !isValid(list[component])).forEach((component) => {
+          reportSetStateUsages(list[component]);
+        });
+      }
+    };
+  })
+};