Remove vestigial ESLint config dependencies

CHANGELOG.md

@@ -8,6 +8,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ## [Unreleased]
 
 - Exclude compiled test files from the published npm package.
+- Remove the unused `eslint-config-airbnb-base` and `eslint-plugin-import` development dependencies and the stale `.eslintrc.yml`, resolving peer dependency warnings on install.
 
 ## [7.0.4] - 2026-09-06
 

eslint.config.js

@@ -26,7 +26,7 @@ export default [
       // TypeScript ESLint recommended rules
       ...tseslint.configs.recommended.rules,
 
-      // Custom rules from .eslintrc.yml
+      // Custom rules
       'comma-dangle': [
         'error',
         {

package.json

@@ -75,8 +75,6 @@
     "@typescript-eslint/parser": "^8.56.1",
     "chai": "^6.2.2",
     "eslint": "^10.0.2",
-    "eslint-config-airbnb-base": "^15.0.0",
-    "eslint-plugin-import": "^2.32.0",
     "globals": "^17.4.0",
     "husky": "^9.1.7",
     "mocha": "^11.7.5",