flat config eslint 9.x.x working (#336)

* trying to support eslint 9

* Fix lint

* Add eslint9 to peerDeps

---------

Co-authored-by: Hugo Rune <hugo.rune@me.com>

Author: MartinInAction

lib/util/Components.js

@@ -99,7 +99,7 @@ Components.prototype.length = function () {
   return length;
 };
 
-function componentRule(rule, context) {
+function componentRule(rule, context, _node) {
   const sourceCode = context.getSourceCode();
   const components = new Components();
 
@@ -165,11 +165,11 @@ function componentRule(rule, context) {
      *
      * @returns {ASTNode} component node, null if we are not in a component
      */
-    getParentComponent: function () {
+    getParentComponent: function (_n) {
       return (
-        utils.getParentES6Component()
-        || utils.getParentES5Component()
-        || utils.getParentStatelessComponent()
+        utils.getParentES6Component(_n)
+        || utils.getParentES5Component(_n)
+        || utils.getParentStatelessComponent(_n)
       );
     },
 
@@ -178,9 +178,9 @@ function componentRule(rule, context) {
      *
      * @returns {ASTNode} component node, null if we are not in a component
      */
-    getParentES5Component: function () {
+    getParentES5Component: function (_n) {
       // eslint-disable-next-line react/destructuring-assignment
-      let scope = context.getScope();
+      let scope = (context.sourceCode || context).getScope(_n);
       while (scope) {
         const node = scope.block && scope.block.parent && scope.block.parent.parent;
         if (node && utils.isES5Component(node)) {
@@ -196,8 +196,8 @@ function componentRule(rule, context) {
      *
      * @returns {ASTNode} component node, null if we are not in a component
      */
-    getParentES6Component: function () {
-      let scope = context.getScope();
+    getParentES6Component: function (_n) {
+      let scope = (context.sourceCode || context).getScope(_n);
       while (scope && scope.type !== 'class') {
         scope = scope.upper;
       }
@@ -213,9 +213,9 @@ function componentRule(rule, context) {
      *
      * @returns {ASTNode} component node, null if we are not in a component
      */
-    getParentStatelessComponent: function () {
+    getParentStatelessComponent: function (_n) {
       // eslint-disable-next-line react/destructuring-assignment
-      let scope = context.getScope();
+      let scope = (context.sourceCode || context).getScope(_n);
       while (scope) {
         const node = scope.block;
         // Ignore non functions
@@ -263,7 +263,7 @@ function componentRule(rule, context) {
         return null;
       }
       let variableInScope;
-      const { variables } = context.getScope();
+      const { variables } = (context.sourceCode || context).getScope(_node);
       for (i = 0, j = variables.length; i < j; i++) { // eslint-disable-line no-plusplus
         if (variables[i].name === variableName) {
           variableInScope = variables[i];
@@ -323,8 +323,8 @@ function componentRule(rule, context) {
       components.add(node, 2);
     },
 
-    ClassProperty: function () {
-      const node = utils.getParentComponent();
+    ClassProperty: function (_n) {
+      const node = utils.getParentComponent(_n);
       if (!node) {
         return;
       }
@@ -338,24 +338,24 @@ function componentRule(rule, context) {
       components.add(node, 2);
     },
 
-    FunctionExpression: function () {
-      const node = utils.getParentComponent();
+    FunctionExpression: function (_n) {
+      const node = utils.getParentComponent(_n);
       if (!node) {
         return;
       }
       components.add(node, 1);
     },
 
-    FunctionDeclaration: function () {
-      const node = utils.getParentComponent();
+    FunctionDeclaration: function (_n) {
+      const node = utils.getParentComponent(_n);
       if (!node) {
         return;
       }
       components.add(node, 1);
     },
 
-    ArrowFunctionExpression: function () {
-      const node = utils.getParentComponent();
+    ArrowFunctionExpression: function (_n) {
+      const node = utils.getParentComponent(_n);
       if (!node) {
         return;
       }
@@ -366,8 +366,8 @@ function componentRule(rule, context) {
       }
     },
 
-    ThisExpression: function () {
-      const node = utils.getParentComponent();
+    ThisExpression: function (_n) {
+      const node = utils.getParentComponent(_n);
       if (!node || !/Function/.test(node.type)) {
         return;
       }
@@ -379,7 +379,7 @@ function componentRule(rule, context) {
       if (!utils.isReturningJSX(node)) {
         return;
       }
-      const parentNode = utils.getParentComponent();
+      const parentNode = utils.getParentComponent(node);
       if (!parentNode) {
         return;
       }

lib/util/variable.js

@@ -11,8 +11,8 @@
  * @param {String} name The name of the variable to mark as used.
  * @returns {Boolean} True if the variable was found and marked as used, false if not.
  */
-function markVariableAsUsed(context, name) {
-  let scope = context.getScope();
+function markVariableAsUsed(context, name, _node) {
+  let scope = (context.sourceCode || context).getScope(_node);
   let variables;
   let i;
   let len;
@@ -58,6 +58,13 @@ function findVariable(variables, name) {
   return false;
 }
 
+function getScope(context, node) {
+  if (context.sourceCode && context.sourceCode.getScope) {
+    return context.sourceCode.getScope(node);
+  }
+  return context.getScope();
+}
+
 /**
  * List all variable in a given scope
  *
@@ -67,8 +74,8 @@ function findVariable(variables, name) {
  * @param {Array} name The name of the variable to search.
  * @returns {Boolean} True if the variable was found, false if not.
  */
-function variablesInScope(context) {
-  let scope = context.getScope();
+function variablesInScope(context, _n) {
+  let scope = getScope(context, _n);
   let { variables } = scope;
 
   while (scope.type !== 'global') {

package-lock.json

@@ -36,7 +36,7 @@
     "typescript": "^5.2.2"
   },
   "peerDependencies": {
-    "eslint": "^3.17.0 || ^4 || ^5 || ^6 || ^7 || ^8"
+    "eslint": "^3.17.0 || ^4 || ^5 || ^6 || ^7 || ^8 || ^9"
   },
   "keywords": [
     "eslint",