fix: add context.sourceCode fallback for ESLint 10 compatibility (#659)

Fixes #655.

Author: bmish

lib/rules/assert-args.js

@@ -37,7 +37,8 @@ module.exports = {
     create: function (context) {
         /** @type {Array<{assertContextVar: string | null}>} */
         const testStack = [],
-            sourceCode = context.getSourceCode();
+            /* istanbul ignore next: deprecated code paths only followed by old eslint versions */
+            sourceCode = context.sourceCode ?? context.getSourceCode();
 
         /**
          * @param {import('estree').Node} argNode

lib/rules/literal-compare-order.js

@@ -38,7 +38,8 @@ module.exports = {
     create: function (context) {
         /** @type {Array<{assertContextVar: string | null}>} */
         const testStack = [],
-            sourceCode = context.getSourceCode();
+            /* istanbul ignore next: deprecated code paths only followed by old eslint versions */
+            sourceCode = context.sourceCode ?? context.getSourceCode();
 
         function getAssertContext() {
             assert.ok(testStack.length);

lib/rules/no-arrow-tests.js

@@ -40,7 +40,8 @@ module.exports = {
         //--------------------------------------------------------------------------
 
         // Fixer adapted from https://github.com/lo1tuma/eslint-plugin-mocha (MIT)
-        const sourceCode = context.getSourceCode();
+        /* istanbul ignore next: deprecated code paths only followed by old eslint versions */
+        const sourceCode = context.sourceCode ?? context.getSourceCode();
 
         /**
          * @param {number} start

lib/rules/no-assert-equal-boolean.js

@@ -117,7 +117,9 @@ module.exports = {
                         ? "true"
                         : "false";
 
-                    const sourceCode = context.getSourceCode();
+                    /* istanbul ignore next: deprecated code paths only followed by old eslint versions */
+                    const sourceCode =
+                        context.sourceCode ?? context.getSourceCode();
                     if (node.type !== "CallExpression") {
                         return null;
                     }

lib/rules/no-commented-tests.js

@@ -25,7 +25,8 @@ module.exports = {
     },
 
     create: function (context) {
-        const sourceCode = context.getSourceCode(),
+        /* istanbul ignore next: deprecated code paths only followed by old eslint versions */
+        const sourceCode = context.sourceCode ?? context.getSourceCode(),
             newlineRegExp = /\r\n|\r|\n/g,
             warningRegExp =
                 /\b(QUnit\.test|QUnit\.asyncTest|QUnit\.skip|test|asyncTest)\s*\(\s*["'`]/g;

lib/rules/no-compare-relation-boolean.js

@@ -102,7 +102,9 @@ module.exports = {
                     node: callExprNode,
                     messageId: "redundantComparison",
                     fix(fixer) {
-                        const sourceCode = context.getSourceCode();
+                        /* istanbul ignore next: deprecated code paths only followed by old eslint versions */
+                        const sourceCode =
+                            context.sourceCode ?? context.getSourceCode();
                         /* istanbul ignore next */
                         if (callExprNode.type !== "CallExpression") {
                             return null;

lib/rules/no-hooks-from-ancestor-modules.js

@@ -125,7 +125,10 @@ module.exports = {
                     const description =
                         arg.type === "Literal" && typeof arg.value === "string"
                             ? arg.value
-                            : context.getSourceCode().getText(arg);
+                            : /* istanbul ignore next: deprecated code paths only followed by old eslint versions */
+                              (
+                                  context.sourceCode ?? context.getSourceCode()
+                              ).getText(arg);
 
                     /** @type {{callExpression: import('eslint').Rule.Node, description: string, hookIdentifierName?: string | null}} */
                     const moduleStackInfo = {

lib/rules/no-negated-ok.js

@@ -46,7 +46,8 @@ module.exports = {
                 ...POSITIVE_ASSERTIONS,
                 ...NEGATIVE_ASSERTIONS,
             ]),
-            sourceCode = context.getSourceCode();
+            /* istanbul ignore next: deprecated code paths only followed by old eslint versions */
+            sourceCode = context.sourceCode ?? context.getSourceCode();
 
         function getAssertVar() {
             let result = null;

lib/rules/no-ok-equality.js

@@ -50,7 +50,8 @@ module.exports = {
                 allowGlobal: true,
             },
             options = context.options[0] || DEFAULT_OPTIONS,
-            sourceCode = context.getSourceCode();
+            /* istanbul ignore next: deprecated code paths only followed by old eslint versions */
+            sourceCode = context.sourceCode ?? context.getSourceCode();
 
         const POSITIVE_ASSERTIONS = new Set(["ok", "true"]);
         const NEGATIVE_ASSERTIONS = new Set(["notOk", "false"]);

lib/rules/no-test-expect-argument.js

@@ -30,7 +30,8 @@ module.exports = {
     },
 
     create: function (context) {
-        const sourceCode = context.getSourceCode();
+        /* istanbul ignore next: deprecated code paths only followed by old eslint versions */
+        const sourceCode = context.sourceCode ?? context.getSourceCode();
 
         return {
             CallExpression: function (node) {