Effect 集成

Better Auth 使用 Web 标准的 Request 和 Response 对象。Effect 4 可以通过 HttpEffect.fromWebHandler 挂载 auth.handler。

安装 Effect

npm install effect

如果要新建 Effect 项目，请遵循 Effect 安装指南。

挂载 auth 处理器

以下示例运行于 Node.js。若要使用其他运行时，请参阅 Effect Platform 指南。

npm install @effect/platform-node

src/index.ts

import { createServer } from "node:http";
import { NodeHttpServer, NodeRuntime } from "@effect/platform-node";
import { Layer } from "effect";
import { HttpEffect, HttpRouter, HttpServerResponse } from "effect/http";
import { auth } from "./auth.ts";

const homeRoute = HttpRouter.add(
  "GET",
  "/",
  HttpServerResponse.text("Hello Better Auth"),
);

const authRoutes = HttpRouter.add( 
  "*", 
  "/api/auth/*", // Match your Better Auth basePath.
  HttpEffect.fromWebHandler(auth.handler), 
); 

const routes = Layer.mergeAll(homeRoute, authRoutes);

const server = HttpRouter.serve(routes).pipe(
  Layer.provide(NodeHttpServer.layer(createServer, { port: 3000 })),
);

Layer.launch(server).pipe(NodeRuntime.runMain);

跨域请求

如果前端运行在不同的 origin，请同时在 Effect 服务器的 CORS 中间件和 Better Auth 的 trustedOrigins 中允许该来源。中间件会应用于所有路由，因此只需列出需要访问 cookie 的来源。

src/auth.ts

import { betterAuth } from "better-auth";

export const auth = betterAuth({
  trustedOrigins: ["http://localhost:5173"], 
});

src/index.ts

import { HttpMiddleware } from "effect/http";

const server = HttpRouter.serve(routes, {
  middleware: HttpMiddleware.cors({
    allowedOrigins: ["http://localhost:5173"], 
    credentials: true,
  }),
}).pipe(
  Layer.provide(NodeHttpServer.layer(createServer, { port: 3000 })),
);

有关跨站 cookie，请参阅 Cookies。

保护应用路由

你可以通过 Better Auth 检查会话，以保护应用资源：

src/index.ts

import { Effect } from "effect";
import { HttpServerRequest, HttpServerResponse } from "effect/http";

const profileRoute = HttpRouter.add(
  "GET",
  "/profile",
  Effect.gen(function* () {
    const request = yield* HttpServerRequest.HttpServerRequest;
    const session = yield* Effect.tryPromise(() =>
      auth.api.getSession({ headers: request.headers }),
    );

    if (!session) {
      return HttpServerResponse.empty({ status: 401 });
    }

    return yield* HttpServerResponse.json(session.user);
  }),
);

const routes = Layer.mergeAll(homeRoute, authRoutes, profileRoute);

安装 Effect

挂载 auth 处理器

跨域请求

保护应用路由

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