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Write your first API with Deno

Saswata Mukherjee on May 19, 2020

ICYMI, Deno v1.0 has been released! But what is Deno? Deno is a simple, modern and secure runtime for JavaScript and TypeScript that u...

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Nikola Bosnjak • May 25 '20 • Edited

Great post, thanks!

You dont have to expose db credentials, you can do it like this

just import --> import "deno.land/x/denv/mod.ts"; <-- to db.ts file

const dbName = Deno.env.get("DB_NAME") as string;
const dbHostUrl = Deno.env.get("DB_HOST_URL") as string;

Saswata Mukherjee • May 25 '20

Yup! Can do!

Michael Sperber • May 22 '20

After the first code snippet, I get an error:

└─ $ ▶ deno run --allow-read --allow-net server.ts
error: Uncaught NotFound: No such file or directory (os error 2)
    at unwrapResponse ($deno$/ops/dispatch_json.ts:43:11)
    at Object.sendAsync ($deno$/ops/dispatch_json.ts:98:10)
    at async Object.open ($deno$/files.ts:37:15)
    at async Object.readFile ($deno$/read_file.ts:13:16)
    at async load (https://deno.land/x/denv/mod.ts:19:15)
    at async https://deno.land/x/denv/mod.ts:29:1

Any thoughts on whats going wrong?

deno 1.0.1
v8 8.4.300
typescript 3.9.2

Saswata Mukherjee • May 22 '20

Looks like your denv module is missing. Maybe you weren't connected to the internet when you ran the program and Deno couldn't load the module. You need an active net connection to get the denv and abc modules.

Michael Sperber • May 22 '20

Thanks Saswata. I removed the cache dir (~/.cache/deno) and executed the deno run command again. Got the same error alas. This time I was on a network cable (previously on wifi) and deno didn't report any errors during all download. I'm giving up I'm afraid. The message is not very clear and Google is not my friend in this instance.

Nikola Bosnjak • May 25 '20 • Edited

you are missing .env file

Michael Sperber • May 25 '20

That was the solution! It seems we need an empty .env in the project dir. Thanks Nikola!

Nikola Bosnjak • May 25 '20

NP. I have made same mistake :D

ChessZhang • May 20 '20

Which deno version you used ? I use deno@1.0.0 to run your code will cause some problem.

Saswata Mukherjee • May 20 '20

For this article I have used:
deno 1.0.0
v8 8.4.300
typescript 3.9.2
If you have any further problems you can refer to the GitHub repo linked in the article!

ChessZhang • May 20 '20

Thanks. It works now!