在TypeScript中使用koa视图

Question

我试图使用koa视图作为我的渲染器，但我一直收到TS的消息：

Property 'render' does not exist on type 'ParameterizedContext<any, IRouterParamContext<any, {}>>'.ts(2339)

我的app.js

import Koa from "Koa";
import views from "koa-views";
import indexRouter from "./routes/index"

const app = new Koa();

app.use(views(`${__dirname}/views`, { autoRender: true, extension: "swig" }));
app.use(indexRouter.routes());

index.js - IndexRouter：

import Router from "koa-router";
const router = new Router();

router.get("/", async (ctx, next) => {
  ctx.render(); // not done yet tho
  await next();
})

export = router;

Answer 1

这是因为参数ctx类型没有方法呈现()，而是在lib @/koa-视图声明模块中(参见https://github.com/DefinitelyTyped/DefinitelyTyped/blob/master/types/koa-views/index.d.ts#L55)。

你可以做这个：

import { Context, DefaultState } from "koa";
import * as Router from "koa-router";

const router = new Router<DefaultState, Context>();

router.get("/", async (ctx: Context, next) => {
    await ctx.render("/path/");
    await next();
});