fixy

package.json

@@ -61,7 +61,6 @@
   },
   "devDependencies": {
     "@npm/types": "^1.0.1",
-    "@types/chai": "^4.2.12",
     "@types/cross-spawn": "^6.0.2",
     "@types/eslint": "^7.2.3",
     "@types/fs-extra": "^9.0.1",
@@ -76,7 +75,6 @@
     "@types/update-notifier": "^4.1.1",
     "@types/write-file-atomic": "^3.0.1",
     "c8": "^7.3.1",
-    "chai": "^4.2.0",
     "codecov": "^3.7.2",
     "cross-spawn": "^7.0.3",
     "fs-extra": "^9.0.1",
@@ -85,9 +83,9 @@
     "mocha": "^8.1.3",
     "sinon": "^9.0.3",
     "tmp": "0.2.1",
-    "typescript": "^4"
+    "typescript": "^4.0.3"
   },
   "peerDependencies": {
-    "typescript": ">=3 <=4"
+    "typescript": ">=4"
   }
 }

test/fixtures/kitchen/package.json

@@ -2,7 +2,7 @@
   "name": "kitchen",
   "version": "1.0.0",
   "devDependencies": {
-    "typescript": "^2.4.2",
+    "typescript": "^4.0.3",
     "gts": "file:../gts.tgz"
   }
 }

test/kitchen.ts

@@ -2,7 +2,7 @@ import chalk = require('chalk');
 import * as cp from 'child_process';
 import * as fs from 'fs-extra';
 import * as tmp from 'tmp';
-import {assert} from 'chai';
+import * as assert from 'assert';
 import * as path from 'path';
 import {describe, it, before, after} from 'mocha';
 
@@ -145,7 +145,7 @@ describe('🚰 kitchen sink', () => {
       Object.assign({}, {reject: false}, execOpts)
     );
     assert.strictEqual(res.exitCode, 1);
-    assert.include(res.stdout, 'assigned a value but');
+    assert.ok(res.stdout.includes('assigned a value but'));
   });
 
   it('should fix', () => {