test: simplify getScope

package.json

@@ -54,6 +54,7 @@
     },
     "devDependencies": {
         "@eslint-community/eslint-plugin-mysticatea": "^15.5.1",
+        "@types/eslint": "^8.56.12",
         "c8": "^8.0.1",
         "dot-prop": "^7.2.0",
         "eslint": "^8.50.0",

test/find-variable.mjs

@@ -1,7 +1,7 @@
 import assert from "assert"
 import eslint from "eslint"
 import { findVariable } from "../src/index.mjs"
-import { getScope } from "./test-lib/get-scope.mjs"
+import { getScope } from "./test-lib/eslint-compat.mjs"
 
 describe("The 'findVariable' function", () => {
     function getVariable(code, selector, withString = null) {

test/get-innermost-scope.mjs

@@ -1,7 +1,7 @@
 import assert from "assert"
 import eslint from "eslint"
 import { getInnermostScope } from "../src/index.mjs"
-import { getScope } from "./test-lib/get-scope.mjs"
+import { getScope } from "./test-lib/eslint-compat.mjs"
 
 describe("The 'getInnermostScope' function", () => {
     let i = 0

test/get-static-value.mjs

@@ -2,7 +2,7 @@ import assert from "assert"
 import eslint from "eslint"
 import semver from "semver"
 import { getStaticValue } from "../src/index.mjs"
-import { getScope } from "./test-lib/get-scope.mjs"
+import { getScope } from "./test-lib/eslint-compat.mjs"
 
 describe("The 'getStaticValue' function", () => {
     for (const { code, expected, noScope = false } of [

test/get-string-if-constant.mjs

@@ -1,7 +1,7 @@
 import assert from "assert"
 import eslint from "eslint"
 import { getStringIfConstant } from "../src/index.mjs"
-import { getScope } from "./test-lib/get-scope.mjs"
+import { getScope } from "./test-lib/eslint-compat.mjs"
 
 describe("The 'getStringIfConstant' function", () => {
     for (const { code, expected } of [

test/reference-tracker.mjs

@@ -2,7 +2,7 @@ import assert from "assert"
 import eslint from "eslint"
 import semver from "semver"
 import { CALL, CONSTRUCT, ESM, READ, ReferenceTracker } from "../src/index.mjs"
-import { getScope } from "./test-lib/get-scope.mjs"
+import { getScope } from "./test-lib/eslint-compat.mjs"
 
 const config = {
     parserOptions: {

test/test-lib/eslint-compat.mjs

@@ -0,0 +1,5 @@
+export const getScope = (context, node) =>
+    getSourceCode(context).getScope?.(node) ?? context.getScope();
+
+const getSourceCode = (context) =>
+    context.sourceCode ?? context.getSourceCode();