diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..3d75225
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,172 @@
+# Based on https://raw.githubusercontent.com/github/gitignore/main/Node.gitignore
+
+# Logs
+
+logs
+_.log
+npm-debug.log_
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+.pnpm-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+
+report.[0-9]_.[0-9]_.[0-9]_.[0-9]_.json
+
+# Runtime data
+
+pids
+_.pid
+_.seed
+\*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+
+lib-cov
+
+# Coverage directory used by tools like istanbul
+
+coverage
+\*.lcov
+
+# nyc test coverage
+
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+
+bower_components
+
+# node-waf configuration
+
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+
+build/Release
+
+# Dependency directories
+
+node_modules/
+jspm_packages/
+
+# Snowpack dependency directory (https://snowpack.dev/)
+
+web_modules/
+
+# TypeScript cache
+
+\*.tsbuildinfo
+
+# Optional npm cache directory
+
+.npm
+
+# Optional eslint cache
+
+.eslintcache
+
+# Optional stylelint cache
+
+.stylelintcache
+
+# Microbundle cache
+
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+
+.node_repl_history
+
+# Output of 'npm pack'
+
+\*.tgz
+
+# Yarn Integrity file
+
+.yarn-integrity
+
+# dotenv environment variable files
+
+.env
+.env.development.local
+.env.test.local
+.env.production.local
+.env.local
+
+# parcel-bundler cache (https://parceljs.org/)
+
+.cache
+.parcel-cache
+
+# Next.js build output
+
+.next
+out
+
+# Nuxt.js build / generate output
+
+.nuxt
+dist
+
+# Gatsby files
+
+.cache/
+
+# Comment in the public line in if your project uses Gatsby and not Next.js
+
+# https://nextjs.org/blog/next-9-1#public-directory-support
+
+# public
+
+# vuepress build output
+
+.vuepress/dist
+
+# vuepress v2.x temp and cache directory
+
+.temp
+.cache
+
+# Docusaurus cache and generated files
+
+.docusaurus
+
+# Serverless directories
+
+.serverless/
+
+# FuseBox cache
+
+.fusebox/
+
+# DynamoDB Local files
+
+.dynamodb/
+
+# TernJS port file
+
+.tern-port
+
+# Stores VSCode versions used for testing VSCode extensions
+
+.vscode-test
+
+# yarn v2
+
+.yarn/cache
+.yarn/unplugged
+.yarn/build-state.yml
+.yarn/install-state.gz
+.pnp.\*
+
+# IntelliJ based IDEs
+.idea
diff --git a/README.md b/README.md
index bfb53e6..8388643 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,18 @@
-# Topsort.js
+# topsort.js
+
+This repository holds the official Topsort.js client library. It is built using TypeScript.
+
+To install dependencies:
+
+```bash
+bun install
+```
+
+To run:
+
+```bash
+bun run src/index.ts
+```
+
 
-This repository holds the official Topsort.js client library. It is built using [TypeScript][typescript].
 
-[typescript]: https://www.typescriptlang.org
diff --git a/bun.lockb b/bun.lockb
new file mode 100755
index 0000000..db79239
Binary files /dev/null and b/bun.lockb differ
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..e8eefed
--- /dev/null
+++ b/package.json
@@ -0,0 +1,26 @@
+{
+  "name": "topsort.js",
+  "version": "1.0.0",
+  "description": "",
+  "private": true,
+  "packageManager": "bun@1.1.17",
+  "main": "src/index.ts",
+  "author": "Márcio Barbosa <marcio@topsort.com>",
+  "license": "UNLICENSED",
+  "scripts": {
+    "build": "bun build",
+    "test": "bun test",
+    "lint": "bun lint",
+    "format": "bun format",
+    "prepublish": "bun prepublish",
+    "doctest": "bun run src/lib/doctest.test.ts"
+  },
+  "devDependencies": {
+    "@supabase/doctest-js": "^0.1.0",
+    "bun-types": "latest"
+  },
+  "peerDependencies": {
+    "typescript": "^5.0.0"
+  },
+  "dependencies": {}
+}
diff --git a/src/functions/report-event.ts b/src/functions/report-event.ts
new file mode 100644
index 0000000..d1791e6
--- /dev/null
+++ b/src/functions/report-event.ts
@@ -0,0 +1,40 @@
+import { version } from "../../package.json";
+import { Config, TopsortEvent } from "../interfaces/events.interface";
+
+/**
+ * Reports an event to the Topsort API.
+ * 
+ * @example
+ * ```js
+ * const event = { eventType: "test", eventData: {} };
+ * const config = { token: "my-token" };
+ * const result = await reportEvent(event, config);
+ * console.log(result); // { ok: true, retry: false }
+ * ```
+ * 
+ * @param {TopsortEvent} e - The event to report.
+ * @param {Config} config - The configuration object containing URL and token.
+ * @returns {Promise<{ok: boolean, retry: boolean}>} The result of the report, indicating success and if a retry is needed.
+ */
+export async function reportEvent(e: TopsortEvent, config: Config): Promise<{ ok: boolean, retry: boolean }> {
+  try {
+    const url = (config.url || "https://api.topsort.com") + "/v2/events";
+    const r = await fetch(url, {
+      method: "POST",
+      headers: {
+        "Content-Type": "application/json",
+        // Can't use User-Agent header because of
+        // https://bugs.chromium.org/p/chromium/issues/detail?id=571722
+        "X-UA": `ts.js/${version}`,
+        Authorization: "Bearer " + config.token,
+      },
+      body: JSON.stringify(e),
+      // This parameter ensures in most browsers that the request is performed even in case the browser navigates to another page.
+      keepalive: true,
+    });
+    return { ok: r.ok, retry: r.status === 429 || r.status >= 500 };
+  } catch (error) {
+    console.error("Error reporting event:", error);
+    return { ok: false, retry: true };
+  }
+}
\ No newline at end of file
diff --git a/src/index.ts b/src/index.ts
new file mode 100644
index 0000000..12bc3db
--- /dev/null
+++ b/src/index.ts
@@ -0,0 +1,2 @@
+export * from './functions/report-event';
+export * from './interfaces/events.interface';
\ No newline at end of file
diff --git a/src/interfaces/events.interface.ts b/src/interfaces/events.interface.ts
new file mode 100644
index 0000000..8becc7b
--- /dev/null
+++ b/src/interfaces/events.interface.ts
@@ -0,0 +1,52 @@
+interface Placement {
+    path: string;
+}
+
+export interface Entity {
+    type: "product";
+    id: string;
+}
+
+interface Impression {
+    resolvedBidId?: string;
+    entity?: Entity;
+    additionalAttribution?: Entity;
+    placement: Placement;
+    occurredAt: string;
+    opaqueUserId: string;
+    id: string;
+}
+
+interface Click {
+    resolvedBidId?: string;
+    entity?: Entity;
+    additionalAttribution?: Entity;
+    placement: Placement;
+    occurredAt: string;
+    opaqueUserId: string;
+    id: string;
+}
+
+interface Item {
+    productId: string;
+    quantity: number;
+    unitPrice: number;
+}
+
+interface Purchase {
+    occurredAt: string;
+    opaqueUserId: string;
+    id: string;
+    items: Item[];
+}
+
+export interface TopsortEvent {
+    impressions?: Impression[];
+    clicks?: Click[];
+    purchases?: Purchase[];
+}
+
+export interface Config {
+    token: string;
+    url?: string;
+}
diff --git a/src/lib/extract-comments.ts b/src/lib/extract-comments.ts
new file mode 100644
index 0000000..a02d7a5
--- /dev/null
+++ b/src/lib/extract-comments.ts
@@ -0,0 +1,13 @@
+import * as fs from "fs";
+
+export function extractJSDocComments(filePath: string): string[] {
+    const content = fs.readFileSync(filePath, "utf-8");
+    const comments = [];
+    const regex = /\/\*\*([\s\S]*?)\*\//g;
+    let match;
+    while ((match = regex.exec(content)) !== null) {
+        console.log("JSDoc Comment:", match[1]); // Log each extracted JSDoc comment
+        comments.push(match[1].trim());
+    }
+    return comments;
+}
\ No newline at end of file
diff --git a/src/lib/generate-test-cases.ts b/src/lib/generate-test-cases.ts
new file mode 100644
index 0000000..5622bc6
--- /dev/null
+++ b/src/lib/generate-test-cases.ts
@@ -0,0 +1,33 @@
+import { extractJSDocComments } from "./extract-comments";
+
+interface TestCase {
+    code: string;
+    expected: any;
+}
+
+export function generateTestCases(filePath: string): TestCase[] {
+    const comments = extractJSDocComments(filePath);
+    const testCases: TestCase[] = [];
+
+    comments.forEach((comment) => {
+        console.log(comment)
+        const exampleMatch = comment.match(/@example\s+\*?\s*```js([\s\S]*?)\s*\*?\s*```/);
+        if (exampleMatch) {
+            const exampleCode = exampleMatch[1].trim();
+            const expectedMatch = exampleCode.match(/console\.log\((.*)\);?\s*\/\/\s*(.*)/);
+            if (expectedMatch) {
+                try {
+                    const expectedOutput = JSON.parse(expectedMatch[2].trim());
+                    testCases.push({
+                        code: exampleCode.replace(/console\.log\(.*\);/, ""),
+                        expected: expectedOutput,
+                    });
+                } catch (error) {
+                    console.error("Failed to parse expected output:", expectedMatch[2].trim(), error);
+                }
+            }
+        }
+    });
+
+    return testCases;
+}
\ No newline at end of file
diff --git a/src/lib/mock-fetch.ts b/src/lib/mock-fetch.ts
new file mode 100644
index 0000000..6066358
--- /dev/null
+++ b/src/lib/mock-fetch.ts
@@ -0,0 +1,29 @@
+type RequestInfo = string | URL | Request;
+export function mockFetch(responseData: any, status: number, urlPattern: string) {
+    globalThis.fetch = async (input: RequestInfo) => {
+        let url: string;
+
+        if (typeof input === "string") {
+            url = input;
+        } else if (input instanceof URL) {
+            url = input.href;
+        } else {
+            url = input.url;
+        }
+
+        if (url.includes(urlPattern)) {
+            return new Response(JSON.stringify(responseData), {
+                status: status,
+                headers: { "Content-Type": "application/json" },
+            });
+        }
+
+        return new Response(null, { status: 404 });
+    };
+}
+
+export function resetFetch() {
+    globalThis.fetch = async () => {
+        return new Response(null, { status: 404 });
+    };
+}
\ No newline at end of file
diff --git a/src/tests/report-event.test.ts b/src/tests/report-event.test.ts
new file mode 100644
index 0000000..ae53fbc
--- /dev/null
+++ b/src/tests/report-event.test.ts
@@ -0,0 +1,86 @@
+import { describe, it, expect, afterEach } from "bun:test";
+import { reportEvent } from "../functions/report-event";
+import { TopsortEvent } from "../interfaces/events.interface";
+import { mockFetch, resetFetch } from "../lib/mock-fetch";
+
+describe("reportEvent", () => {
+    afterEach(() => {
+        resetFetch();
+    });
+
+    it("should report event successfully", async () => {
+        mockFetch({}, 200, "https://api.topsort.com/v2/events");
+        const result = await reportEvent({} as TopsortEvent, { token: "token" });
+        expect(result).toEqual({
+            ok: true,
+            retry: false,
+        });
+    });
+
+
+    it("should report event successfully", async () => {
+        mockFetch({}, 200, "https://api.topsort.com/v2/events");
+        const result = await reportEvent({} as TopsortEvent, { token: "token" });
+        expect(result).toEqual({
+            ok: true,
+            retry: false,
+        });
+    });
+
+    it("should handle network error and retry", async () => {
+        mockFetch({ error: "Server Error" }, 500, "https://error.api.topsort.com/v2/events");
+        const result = await reportEvent({} as TopsortEvent, {
+            token: "token",
+            url: "https://error.api.topsort.com",
+        });
+        expect(result).toEqual({
+            ok: false,
+            retry: true,
+        });
+    });
+
+    it("should handle permanent error", async () => {
+        mockFetch({ error: "Client Error" }, 400, "https://api.topsort.com/v2/events");
+        const result = await reportEvent({} as TopsortEvent, { token: "token" });
+        expect(result).toEqual({
+            ok: false,
+            retry: false,
+        });
+    });
+
+    it("should handle authentication error", async () => {
+        mockFetch({ error: "Unauthorized" }, 401, "https://api.topsort.com/v2/events");
+        const result = await reportEvent({} as TopsortEvent, { token: "token" });
+        expect(result).toEqual({
+            ok: false,
+            retry: false,
+        });
+    });
+
+    it("should handle retryable error", async () => {
+        mockFetch({ error: "Too Many Requests" }, 429, "https://api.topsort.com/v2/events");
+        const result = await reportEvent({} as TopsortEvent, { token: "token" });
+        expect(result).toEqual({
+            ok: false,
+            retry: true,
+        });
+    });
+
+    it("should handle server error", async () => {
+        mockFetch({ error: "Internal Server Error" }, 500, "https://api.topsort.com/v2/events");
+        const result = await reportEvent({} as TopsortEvent, { token: "token" });
+        expect(result).toEqual({
+            ok: false,
+            retry: true,
+        });
+    });
+
+    it("should handle custom url", async () => {
+        mockFetch({}, 200, "https://demo.api.topsort.com/v2/events");
+        const result = await reportEvent({} as TopsortEvent, {
+            token: "token",
+            url: "https://demo.api.topsort.com",
+        });
+        expect(result).toEqual({ ok: true, retry: false });
+    });
+});
\ No newline at end of file
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 0000000..7556e1d
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,22 @@
+{
+  "compilerOptions": {
+    "lib": ["ESNext"],
+    "module": "esnext",
+    "target": "esnext",
+    "moduleResolution": "bundler",
+    "moduleDetection": "force",
+    "allowImportingTsExtensions": true,
+    "noEmit": true,
+    "composite": true,
+    "strict": true,
+    "downlevelIteration": true,
+    "skipLibCheck": true,
+    "jsx": "react-jsx",
+    "allowSyntheticDefaultImports": true,
+    "forceConsistentCasingInFileNames": true,
+    "allowJs": true,
+    "types": [
+      "bun-types" // add Bun global
+    ]
+  }
+}