test: add unit tests generated by ToTheos

coverage/coverage-summary.json

@@ -0,0 +1,3 @@
+{"total": {"lines":{"total":7,"covered":7,"skipped":0,"pct":100},"statements":{"total":7,"covered":7,"skipped":0,"pct":100},"functions":{"total":1,"covered":1,"skipped":0,"pct":100},"branches":{"total":3,"covered":3,"skipped":0,"pct":100},"branchesTrue":{"total":0,"covered":0,"skipped":0,"pct":"Unknown"}}
+,"/mnt/ext2/code/prompts/github/forks/public-docs/src/utils/http.ts": {"lines":{"total":7,"covered":7,"skipped":0,"pct":100},"functions":{"total":1,"covered":1,"skipped":0,"pct":100},"statements":{"total":7,"covered":7,"skipped":0,"pct":100},"branches":{"total":3,"covered":3,"skipped":0,"pct":100}}
+}

jest.config.js

@@ -0,0 +1,11 @@
+const { createDefaultPreset } = require("ts-jest");
+
+const tsJestTransformCfg = createDefaultPreset().transform;
+
+/** @type {import("jest").Config} **/
+module.exports = {
+  testEnvironment: "jsdom",
+  transform: {
+    ...tsJestTransformCfg,
+  },
+};