[Refactor] add getMessageData util

Author: ljharb

lib/rules/hook-use-state.js

@@ -8,6 +8,7 @@
 const Components = require('../util/Components');
 const docsUrl = require('../util/docsUrl');
 const report = require('../util/report');
+const getMessageData = require('../util/message');
 
 // ------------------------------------------------------------------------------
 // Rule Definition
@@ -20,6 +21,8 @@ function isNodeDestructuring(node) {
 const messages = {
   useStateErrorMessage: 'useState call is not destructured into value + setter pair',
   useStateErrorMessageOrAddOption: 'useState call is not destructured into value + setter pair (you can allow destructuring by enabling "allowDestructuredState" option)',
+  suggestPair: 'Destructure useState call into value + setter pair',
+  suggestMemo: 'Replace useState call with useMemo',
 };
 
 module.exports = {
@@ -67,7 +70,10 @@ module.exports = {
             context,
             messages.useStateErrorMessage,
             'useStateErrorMessage',
-            { node }
+            {
+              node,
+              suggest: false,
+            }
           );
           return;
         }
@@ -104,21 +110,23 @@ module.exports = {
 
         if (!isSymmetricGetterSetterPair) {
           const suggestions = [
-            {
-              desc: 'Destructure useState call into value + setter pair',
-              fix: (fixer) => {
-                if (expectedSetterVariableNames.length === 0) {
-                  return;
-                }
-
-                const fix = fixer.replaceTextRange(
-                  node.parent.id.range,
-                  `[${valueVariableName}, ${expectedSetterVariableNames[0]}]`
-                );
-
-                return fix;
-              },
-            },
+            Object.assign(
+              getMessageData('suggestPair', messages.suggestPair),
+              {
+                fix(fixer) {
+                  if (expectedSetterVariableNames.length === 0) {
+                    return;
+                  }
+
+                  const fix = fixer.replaceTextRange(
+                    node.parent.id.range,
+                    `[${valueVariableName}, ${expectedSetterVariableNames[0]}]`
+                  );
+
+                  return fix;
+                },
+              }
+            ),
           ];
 
           const defaultReactImports = components.getDefaultReactImports();
@@ -150,22 +158,24 @@ module.exports = {
               useMemoCode = 'useMemo';
             }
 
-            suggestions.unshift({
-              desc: 'Replace useState call with useMemo',
-              fix: (fixer) => [
-                // Add useMemo import, if necessary
-                useStateReactImportSpecifier
-                    && (!useMemoReactImportSpecifier || defaultReactImportName)
-                    && fixer.insertTextAfter(useStateReactImportSpecifier, ', useMemo'),
-                // Convert single-value destructure to simple assignment
-                fixer.replaceTextRange(node.parent.id.range, valueVariableName),
-                // Convert useState call to useMemo + arrow function + dependency array
-                fixer.replaceTextRange(
-                  node.range,
-                  `${useMemoCode}(() => ${context.getSourceCode().getText(node.arguments[0])}, [])`
-                ),
-              ].filter(Boolean),
-            });
+            suggestions.unshift(Object.assign(
+              getMessageData('suggestMemo', messages.suggestMemo),
+              {
+                fix: (fixer) => [
+                  // Add useMemo import, if necessary
+                  useStateReactImportSpecifier
+                      && (!useMemoReactImportSpecifier || defaultReactImportName)
+                      && fixer.insertTextAfter(useStateReactImportSpecifier, ', useMemo'),
+                  // Convert single-value destructure to simple assignment
+                  fixer.replaceTextRange(node.parent.id.range, valueVariableName),
+                  // Convert useState call to useMemo + arrow function + dependency array
+                  fixer.replaceTextRange(
+                    node.range,
+                    `${useMemoCode}(() => ${context.getSourceCode().getText(node.arguments[0])}, [])`
+                  ),
+                ].filter(Boolean),
+              }
+            ));
           }
 
           if (isOnlyValueDestructuring) {
@@ -175,6 +185,7 @@ module.exports = {
               'useStateErrorMessageOrAddOption',
               {
                 node: node.parent.id,
+                suggest: false,
               }
             );
             return;

lib/util/message.js

@@ -0,0 +1,8 @@
+'use strict';
+
+const semver = require('semver');
+const eslintPkg = require('eslint/package.json');
+
+module.exports = function getMessageData(messageId, message) {
+  return messageId && semver.satisfies(eslintPkg.version, '>= 4.15') ? { messageId } : { message };
+};

lib/util/report.js

@@ -1,12 +1,11 @@
 'use strict';
 
-const semver = require('semver');
-const eslintPkg = require('eslint/package.json');
+const getMessageData = require('./message');
 
 module.exports = function report(context, message, messageId, data) {
   context.report(
     Object.assign(
-      messageId && semver.satisfies(eslintPkg.version, '>= 4.15') ? { messageId } : { message },
+      getMessageData(messageId, message),
       data
     )
   );