chore(deps-dev): upgrade to ESLint 10 (#597)

* chore(deps-dev): upgrade to ESLint 10 and replace eslint-plugin-import with eslint-plugin-import-x

eslint-plugin-import does not support ESLint 10 (peer dep caps at ^9).
Switch to eslint-plugin-import-x which is the actively maintained fork
with ESLint 10 support.

- eslint: ^9.39.1 → ^10.0.0
- @eslint/js: ^9.24.0 → ^10.0.0
- eslint-plugin-import → eslint-plugin-import-x (^4.16.2)
- eslint-import-resolver-typescript: ^4.3.2 → ^4.4.4
- Update eslint config: import/ rule prefix → import-x/
- Remove redundant resolver settings (provided by pluginImport.typescript)
- Fix unnecessary type assertion in cookieJar.ts caught by stricter checks

* chore: regenerate API docs for updated api-documenter output

Author: colincasey

api/docs/tough-cookie.getpublicsuffixoptions.allowspecialusedomain.md

@@ -12,6 +12,10 @@ If set to `true` then the following [Special Use Domains](https://www.rfc-editor
 allowSpecialUseDomain?: boolean | undefined;
 ```
 
+## Default Value
+
+false
+
 ## Remarks
 
 In testing scenarios it's common to configure the cookie store with so that `http://localhost` can be used as a domain:

api/docs/tough-cookie.getpublicsuffixoptions.ignoreerror.md

@@ -11,3 +11,8 @@ If set to `true` then any errors that occur while executing [getPublicSuffix()](
 ```typescript
 ignoreError?: boolean | undefined;
 ```
+
+## Default Value
+
+false
+

eslint.config.mjs

@@ -3,7 +3,7 @@
 import eslint from '@eslint/js'
 import prettierRecommended from 'eslint-plugin-prettier/recommended'
 import { config, configs } from 'typescript-eslint'
-import { flatConfigs as pluginImport } from 'eslint-plugin-import'
+import { flatConfigs as pluginImport } from 'eslint-plugin-import-x'
 import globals from 'globals'
 import vitest from '@vitest/eslint-plugin'
 
@@ -29,7 +29,7 @@ export default config(
     },
     rules: {
       '@typescript-eslint/explicit-function-return-type': 'error',
-      'import/no-nodejs-modules': 'error',
+      'import-x/no-nodejs-modules': 'error',
       'no-control-regex': 'off',
     },
   },
@@ -39,19 +39,11 @@ export default config(
     rules: {
       ...vitest.configs.recommended.rules,
       // We only run tests in node, so we can use node's builtins
-      'import/no-nodejs-modules': 'off',
+      'import-x/no-nodejs-modules': 'off',
     },
   },
   {
     files: ['eslint.config.mjs'],
     ...configs.disableTypeChecked,
   },
-  {
-    // other configuration are omitted for brevity
-    settings: {
-      'import/resolver': {
-        typescript: {}, // this loads <rootdir>/tsconfig.json to eslint
-      },
-    },
-  },
 )

lib/cookie/cookieJar.ts

@@ -237,7 +237,7 @@ function getCookieContext(url: unknown): UrlContext {
 
 type SameSiteLevel = keyof (typeof Cookie)['sameSiteLevel']
 function checkSameSiteContext(value: string): SameSiteLevel | undefined {
-  const context = String(value as unknown).toLowerCase()
+  const context = value.toLowerCase()
   if (context === 'none' || context === 'lax' || context === 'strict') {
     return context
   } else {