diff --git a/package.json b/package.json
index 18c60c2..ac699a7 100644
--- a/package.json
+++ b/package.json
@@ -80,20 +80,25 @@
       }
     },
     "./proxy": {
+      "browser": "./dist/proxy-stub.mjs",
+      "bun": "./dist/proxy-stub.mjs",
+      "deno": "./dist/proxy-stub.mjs",
+      "edge-light": "./dist/proxy-stub.mjs",
+      "edge-routine": "./dist/proxy-stub.mjs",
+      "lagon": "./dist/proxy-stub.mjs",
+      "netlify": "./dist/proxy-stub.mjs",
+      "react-native": "./dist/proxy-stub.mjs",
+      "wintercg": "./dist/proxy-stub.mjs",
+      "worker": "./dist/proxy-stub.mjs",
+      "workerd": "./dist/proxy-stub.mjs",
       "node": {
         "types": "./lib/proxy.d.ts",
         "default": "./dist/proxy.cjs"
       },
-      "default": {
-        "import": {
-          "types": "./lib/proxy.d.ts",
-          "default": "./dist/proxy-stub.mjs"
-        },
-        "require": {
-          "types": "./lib/proxy.d.ts",
-          "default": "./dist/proxy-stub.cjs"
-        }
-      }
+      "types": "./lib/proxy.d.ts",
+      "import": "./dist/proxy-stub.mjs",
+      "require": "./dist/proxy-stub.cjs",
+      "default": "./dist/proxy-stub.mjs"
     }
   },
   "main": "./lib/index.cjs",
diff --git a/test/proxy.test.ts b/test/proxy.test.ts
new file mode 100644
index 0000000..40afae6
--- /dev/null
+++ b/test/proxy.test.ts
@@ -0,0 +1,82 @@
+import { createRequire } from "node:module";
+import { describe, expect, it } from "vitest";
+import pkg from "../package.json";
+import * as proxyStub from "../src/proxy-stub";
+
+const require = createRequire(import.meta.url);
+const proxyNode = require("../dist/proxy.cjs");
+
+describe("node-fetch-native/proxy:exports", () => {
+  const runtimeConditions = [
+    "browser",
+    "bun",
+    "deno",
+    "edge-light",
+    "edge-routine",
+    "lagon",
+    "netlify",
+    "react-native",
+    "wintercg",
+    "worker",
+    "workerd",
+  ];
+
+  it("exports map defines non-node runtime conditions pointing to proxy-stub", () => {
+    const proxyExport = pkg.exports["./proxy"];
+    expect(proxyExport).toBeDefined();
+
+    for (const condition of runtimeConditions) {
+      expect(
+        proxyExport[condition as keyof typeof proxyExport],
+        `condition ${condition} should point to proxy stub`,
+      ).toBe("./dist/proxy-stub.mjs");
+    }
+  });
+
+  it("exports map defines node condition pointing to proxy.cjs", () => {
+    const proxyExport = pkg.exports["./proxy"];
+    expect(proxyExport.node).toEqual({
+      types: "./lib/proxy.d.ts",
+      default: "./dist/proxy.cjs",
+    });
+  });
+
+  it("exports map defines fallback conditions", () => {
+    const proxyExport = pkg.exports["./proxy"];
+    expect(proxyExport.import).toBe("./dist/proxy-stub.mjs");
+    expect(proxyExport.require).toBe("./dist/proxy-stub.cjs");
+    expect(proxyExport.default).toBe("./dist/proxy-stub.mjs");
+    expect(proxyExport.types).toBe("./lib/proxy.d.ts");
+  });
+});
+
+describe("node-fetch-native/proxy:stub", () => {
+  it("exports createProxy returning undefined agent and dispatcher", () => {
+    const proxy = proxyStub.createProxy();
+    expect(proxy).toEqual({
+      agent: undefined,
+      dispatcher: undefined,
+    });
+  });
+
+  it("exports createFetch returning global fetch", () => {
+    expect(proxyStub.createFetch()).toBe(globalThis.fetch);
+  });
+
+  it("exports fetch matching global fetch", () => {
+    expect(proxyStub.fetch).toBe(globalThis.fetch);
+  });
+});
+
+describe("node-fetch-native/proxy:node", () => {
+  it("exports expected symbols in node proxy cjs", () => {
+    expect(typeof proxyNode.createProxy).toBe("function");
+    expect(typeof proxyNode.createFetch).toBe("function");
+    expect(typeof proxyNode.fetch).toBe("function");
+  });
+
+  it("creates agent when no options provided", () => {
+    const proxy = proxyNode.createProxy();
+    expect(proxy).toBeDefined();
+  });
+});