test(eslint-plugin): Fix tests in CI.

Author: avocadowastaken

packages/eslint-plugin/configs/__testutils__/test-eslint-config.js

@@ -23,7 +23,7 @@ async function getConfig(name, dev) {
   const configPath = path.join(__dirname, '..', `${name}.js`);
 
   if (dev) {
-    delete env.CI;
+    env.CI = 'false';
     env.NODE_ENV = 'development';
   }
 

packages/eslint-plugin/configs/internal/error-codes.js

@@ -3,7 +3,8 @@
 const OFF = 'off';
 const ERROR = 'error';
 const WARNING = 'warn';
-const DEPT = !process.env.CI && process.env.NODE_ENV === 'development' ? OFF : WARNING;
-const INCONSISTENCY = !process.env.CI && process.env.NODE_ENV === 'development' ? WARNING : ERROR;
+const DEPT = process.env.CI !== 'true' && process.env.NODE_ENV === 'development' ? OFF : WARNING;
+const INCONSISTENCY =
+  process.env.CI !== 'true' && process.env.NODE_ENV === 'development' ? WARNING : ERROR;
 
 module.exports = { OFF, DEPT, ERROR, INCONSISTENCY };