fix: move options used by ts-jest out of tsconfig

ts-jest uses root tsconfig.json, and options related to strictness
and helpers break multiple unit tests.

Author: trivikr

tsconfig.cjs.json

@@ -1,7 +1,10 @@
 {
   "extends": "./tsconfig.json",
   "compilerOptions": {
+    "importHelpers": true,
     "module": "commonjs",
-    "target": "ES2018"
+    "noEmitHelpers": true,
+    "target": "ES2018",
+    "strict": true
   }
 }

tsconfig.es.json

@@ -1,7 +1,10 @@
 {
   "extends": "./tsconfig.json",
   "compilerOptions": {
+    "importHelpers": true,
     "module": "esnext",
-    "target": "es5"
+    "noEmitHelpers": true,
+    "target": "es5",
+    "strict": true
   }
 }

tsconfig.json

@@ -3,14 +3,12 @@
     "baseUrl": ".",
     "downlevelIteration": true,
     "esModuleInterop": true,
-    "importHelpers": true,
     "inlineSourceMap": true,
     "inlineSources": true,
     "incremental": true,
     "lib": ["es2015", "dom"],
     "module": "commonjs",
     "moduleResolution": "node",
-    "noEmitHelpers": true,
     "noFallthroughCasesInSwitch": true,
     "paths": {
       "@aws-sdk/*": ["packages/*/src"],
@@ -21,7 +19,6 @@
     "preserveConstEnums": true,
     "removeComments": true,
     "resolveJsonModule": true,
-    "strict": true,
     "target": "es5"
   },
   "include": ["packages/", "lib/"],

tsconfig.types.json

@@ -3,6 +3,7 @@
   "compilerOptions": {
     "declaration": true,
     "emitDeclarationOnly": true,
-    "removeComments": false
+    "removeComments": false,
+    "strict": true
   }
 }