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Building a GraphQL Endpoint with Deno

Solution: Mongo and Deno

Go over the solution for the Mongo and Deno challenge.

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To solve this challenge, we need three essential steps. Let’s take a look at them below.

Step 1: Establishing a MongoDB connection

First, we need to establish the MongoDB connection:

TypeScript 3.3.4
const app = new Application();
app.use(async (ctx, next) => {
    const start = Date.now();
    await next();
    const ms = Date.now() - start;
    ctx.response.headers.set("X-Response-Time", `${ms}ms`);
});
const client = new MongoClient();
// Create connection object
await client.connect("mongodb://localhost:27017");

Explanation

  • Lines 1–8: We create and configure a new instance of a Deno application.

  • Line 10: We create a new MongoDB client instance.

  • Line 13: ...