Share the same tsconfig by adding overrides in new jest config

jest.config.js

@@ -0,0 +1,27 @@
+const tsConfig = require('./tsconfig');
+
+module.exports = {
+  preset: "ts-jest",
+  testRegex: "(/__tests__/.*|(\\.|/)(test|spec))\\.(jsx?|tsx?)$",
+  globals: {
+    "ts-jest": {
+      tsConfig: {
+        ...tsConfig.compilerOptions,
+        types: ["jest", "node"]
+      },
+      diagnostics: {
+        ignoreCodes: [151001]
+      },
+    }
+  },
+  moduleNameMapper: {
+    "@src/(.*)": "<rootDir>/src/$1"
+  },
+  moduleFileExtensions: [
+    "ts",
+    "tsx",
+    "js",
+    "jsx",
+    "json"
+  ],
+};

package.json

@@ -58,30 +58,6 @@
     "lint": "bash hooks/pre-commit",
     "pretty": "bash scripts/pretty.sh"
   },
-  "jest": {
-    "preset": "ts-jest",
-    "testRegex": "(/__tests__/.*|(\\.|/)(test|spec))\\.(jsx?|tsx?)$",
-    "moduleFileExtensions": [
-      "ts",
-      "tsx",
-      "js",
-      "jsx",
-      "json"
-    ],
-    "moduleNameMapper": {
-      "@src/(.*)": "<rootDir>/src/$1"
-    },
-    "globals": {
-      "ts-jest": {
-        "tsConfig": "tsconfig.test.json",
-        "diagnostics": {
-          "ignoreCodes": [
-            151001
-          ]
-        }
-      }
-    }
-  },
   "author": "Colin Caine",
   "repository": {
     "type": "git",

tsconfig.json

@@ -6,7 +6,7 @@
     "outDir": "build/tsc-out",
     "sourceMap": true,
     "target": "es2017",
-    "lib": ["es2017","es2019.array","dom", "dom.iterable"],
+    "lib": ["es2017","es2019.array", "es2018.promise", "dom", "dom.iterable"],
     "types": ["web-ext-types"],
     "experimentalDecorators": true,
     "alwaysStrict": true,

tsconfig.test.json

@@ -1,26 +0,0 @@
-{
-  "compilerOptions": {
-    "allowJs": true,
-    "moduleResolution": "node",
-    "noImplicitAny": false,
-    "noEmitOnError": true,
-    "outDir": "build/tsc-out",
-    "sourceMap": true,
-    "target": "es2017",
-    "lib": ["es2017", "es2019.array", "es2018.promise", "dom", "dom.iterable"],
-    "typeRoots": ["node_modules/@types"],
-    "types": ["jest", "node"],
-    "experimentalDecorators": true,
-    "alwaysStrict": true,
-    "baseUrl": "src/",
-    "paths": {
-        "@src/*": ["*"]
-    }
-  },
-  "include": [
-    "./src/**/*"
-  ],
-  "exclude": [
-      "./src/**/*.test.ts"
-  ]
-}