chore: add docs and use set for given regex strings

docs/src/rules/no-restricted-exports.md

@@ -17,6 +17,7 @@ By default, this rule doesn't disallow any names. Only the names you specify in
 This rule has an object option:
 
 * `"restrictedNamedExports"` is an array of strings, where each string is a name to be restricted.
+* `"restrictedNamedExportsPattern"` is an array of regex strings, where each string regex pattern would be restricted.
 * `"restrictDefaultExports"` is an object option with boolean properties to restrict certain default export declarations. The option works only if the `restrictedNamedExports` option does not contain the `"default"` value. The following properties are allowed:
     * `direct`: restricts `export default` declarations.
     * `named`: restricts `export { foo as default };` declarations.
@@ -130,6 +131,20 @@ export default function foo() {}
 
 :::
 
+### restrictedNamedExportsPattern
+
+This option allows you to restrict regex patterns for named exports.
+
+```js
+/*eslint no-restricted-exports: ["error", {
+    "restrictedNamedExports": [],
+    "restrictedNamedExportsPattern": ["^privateUser"]
+}]*/
+
+var privateUserEmail = '...'; 
+export { privateUserEmail };
+```
+
 ### restrictDefaultExports
 
 This option allows you to restrict certain `default` declarations. The option works only if the `restrictedNamedExports` option does not contain the `"default"` value. This option accepts the following properties:

lib/rules/no-restricted-exports.js

@@ -118,7 +118,7 @@ module.exports = {
     create(context) {
 
         const restrictedNames = new Set(context.options[0] && context.options[0].restrictedNamedExports);
-        const restrictedNamePatterns = context.options[0] && context.options[0].restrictedNamedExportsPattern || [];
+        const restrictedNamePatterns = new Set(context.options[0] && context.options[0].restrictedNamedExportsPattern || []);
         const restrictDefaultExports = context.options[0] && context.options[0].restrictDefaultExports;
         const sourceCode = context.sourceCode;
 
@@ -130,7 +130,7 @@ module.exports = {
         function checkExportedName(node) {
             const name = astUtils.getModuleExportName(node);
 
-            const hasRestrictedNamePattern = restrictedNamePatterns.some(pattern => {
+            const hasRestrictedNamePattern = [...restrictedNamePatterns].some(pattern => {
                 const patternRegex = new RegExp(pattern, "u");
 
                 return name && patternRegex.test(name);

tests/lib/rules/no-restricted-exports.js

@@ -567,6 +567,13 @@ ruleTester.run("no-restricted-exports", rule, {
                 { messageId: "restrictedNamed", data: { name: "ab" }, type: "Identifier" }
             ]
         },
+        {
+            code: "var privateUserEmail; export { privateUserEmail };",
+            options: [{ restrictedNamedExportsPattern: ["^privateUser"] }],
+            errors: [
+                { messageId: "restrictedNamed", data: { name: "privateUserEmail" }, type: "Identifier" }
+            ]
+        },
 
         // reports "default" in named export declarations (when configured)
         {