feat: Jest Test Runner (#2170)

jest.config.base.js

@@ -0,0 +1,20 @@
+const { TextDecoder, TextEncoder } = require("util");
+
+module.exports = {
+  roots: ["<rootDir>/src"],
+  transform: {
+    "^.+\\.ts$": "ts-jest",
+  },
+  moduleFileExtensions: ["ts", "tsx", "js", "jsx", "json", "node"],
+  collectCoverage: true,
+  verbose: true,
+  testEnvironment: "node",
+  globals: {
+    TextDecoder: TextDecoder,
+    TextEncoder: TextEncoder,
+    error: console.error,
+    warn: console.warn,
+    info: console.info,
+    debug: console.debug,
+  },
+};