infra(eslint): limit usage of globals in src (#3191)

4 files changed, 8 insertions, 0 deletions

diff --git a/eslint.config.ts b/eslint.config.ts
index 4b522eec..e4dc76bb 100644
--- a/eslint.config.ts
+++ b/eslint.config.ts
@@ -203,8 +203,13 @@ const config: ReturnType<typeof tseslint.config> = tseslint.config(
   {
     files: ['src/**/*.ts'],
     rules: {
+      'no-undef': 'error', // Must override the config from typescript-eslint
       'jsdoc/require-jsdoc': 'error',
     },
+    languageOptions: {
+      // Don't allow any globals in our TypeScript files - unless explicitly ignored
+      globals: {},
+    },
   },
   {
     files: ['src/locale/**/*.ts'],
diff --git a/src/internal/base64.ts b/src/internal/base64.ts
index b346538a..e2702355 100644
--- a/src/internal/base64.ts
+++ b/src/internal/base64.ts
@@ -1,3 +1,4 @@
+/* eslint-disable no-undef -- This file serves as a compatibility layer between environments */
 /**
  * This works the same as `Buffer.from(input).toString('base64')`
  * to work on both Node.js and browser environment.
diff --git a/src/internal/deprecated.ts b/src/internal/deprecated.ts
index fe2cdc94..3d82eb2e 100644
--- a/src/internal/deprecated.ts
+++ b/src/internal/deprecated.ts
@@ -43,5 +43,6 @@ export function deprecated(opts: DeprecatedOptions): void {
     message += `. Please use ${opts.proposed} instead`;
   }
 
+  // eslint-disable-next-line no-undef -- Using console here is intentional and required
   console.warn(`${message}.`);
 }
diff --git a/src/modules/helpers/eval.ts b/src/modules/helpers/eval.ts
index 5c34fbe6..e04575bc 100644
--- a/src/modules/helpers/eval.ts
+++ b/src/modules/helpers/eval.ts
@@ -142,6 +142,7 @@ function evalProcessFunction(
           return entrypoint(...params);
         }
 
+        // eslint-disable-next-line no-undef
         console.warn(
           `[@faker-js/faker]: Invoking expressions which are not functions is deprecated since v9.0 and will be removed in v10.0.
 Please remove the parentheses or replace the expression with an actual function.