Bring back separate typescript devDependencies

package-lock.json

@@ -18,7 +18,8 @@
         "@vercel/ncc": "^0.27.0",
         "jest": "^26.6.3",
         "jest-circus": "^26.6.3",
-        "ts-jest": "^26.4.4"
+        "ts-jest": "^26.4.4",
+        "typescript": "^4.1.3"
       }
     },
     "node_modules/@actions/core": {
@@ -9448,6 +9449,19 @@
         "is-typedarray": "^1.0.0"
       }
     },
+    "node_modules/typescript": {
+      "version": "4.1.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.1.3.tgz",
+      "integrity": "sha512-B3ZIOf1IKeH2ixgHhj6la6xdwR9QrLC5d1VKeCSY4tvkqhF2eqd9O7txNlS0PO3GrBAFIdr3L1ndNwteUbZLYg==",
+      "dev": true,
+      "bin": {
+        "tsc": "bin/tsc",
+        "tsserver": "bin/tsserver"
+      },
+      "engines": {
+        "node": ">=4.2.0"
+      }
+    },
     "node_modules/union-value": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.1.tgz",
@@ -17585,6 +17599,12 @@
         "is-typedarray": "^1.0.0"
       }
     },
+    "typescript": {
+      "version": "4.1.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.1.3.tgz",
+      "integrity": "sha512-B3ZIOf1IKeH2ixgHhj6la6xdwR9QrLC5d1VKeCSY4tvkqhF2eqd9O7txNlS0PO3GrBAFIdr3L1ndNwteUbZLYg==",
+      "dev": true
+    },
     "union-value": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.1.tgz",

package.json

@@ -30,6 +30,7 @@
     "@vercel/ncc": "^0.27.0",
     "jest": "^26.6.3",
     "jest-circus": "^26.6.3",
-    "ts-jest": "^26.4.4"
+    "ts-jest": "^26.4.4",
+    "typescript": "^4.1.3"
   }
 }