feat(tsd-test-setup): add & setup dtslint (#11879)

package.json

@@ -59,6 +59,7 @@
     "chai-spies": "^1.x",
     "cls-hooked": "^4.2.2",
     "cross-env": "^5.2.1",
+    "dtslint": "^2.0.5",
     "env-cmd": "^8.0.2",
     "esdoc": "^1.1.0",
     "esdoc-inject-style-plugin": "^1.0.0",
@@ -150,7 +151,7 @@
     "test-postgresn": "npm run test-postgres-native",
     "test-mssql": "cross-env DIALECT=mssql npm test",
     "test-all": "npm run test-mariadb && npm run test-mysql && npm run test-sqlite && npm run test-postgres && npm run test-postgres-native && npm run test-mssql",
-    "test-typings": "tsc -b types/tsconfig.json && tsc -b types/test/tsconfig.json",
+    "test-typings": "tsc -b types/tsconfig.json &&  dtslint --expectOnly types/test",
     "cover": "rimraf coverage && npm run teaser && npm run cover-integration && npm run cover-unit && npm run merge-coverage",
     "cover-integration": "cross-env COVERAGE=true nyc --reporter=lcovonly mocha --require scripts/mocha-bootload -t 30000 --exit \"test/integration/**/*.test.js\" && node -e \"require('fs').renameSync('coverage/lcov.info', 'coverage/integration.info')\"",
     "cover-unit": "cross-env COVERAGE=true nyc --reporter=lcovonly mocha --require scripts/mocha-bootload -t 30000 --exit \"test/unit/**/*.test.js\" && node -e \"require('fs').renameSync('coverage/lcov.info', 'coverage/unit.info')\"",

types/test/index.d.ts

+// Controls typescript version for testing the types
+
+// TypeScript Version: 3.6

types/test/tsconfig.json

@@ -9,7 +9,6 @@
       "sequelize": ["../"],
       "sequelize/*": ["../"]
     },
-    "types": ["node"],
     "lib": ["es2016"]
   },
   "include": ["../index.d.ts", "./**/sequelize.d.ts", "./**/*.ts"]