Add globalThis to the JavaScript ESLint setup
diff --git a/.eslintrc.js b/.eslintrc.js
index 0acd180..d40dd77 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -85,6 +85,9 @@
         es2017: true,
         node: true,
       },
+      globals: {
+        globalThis: 'readonly',
+      },
       parserOptions: {
         ecmaVersion: 2019,
       },