About performance
if a function takes only one paramater
and i pass unnecessary additional parameters would it affect the performance of just the function part of the code?
```js
function echo(sentence) {
console.log(sentence)...
deno_core Extension with Global Access
Is there a way to make a Deno Extension be accessed by
Extension.op() instead of Deno.core.ops.op()?How to stop reading from a ReadableStream?
```js
let user
for await (const data of readable) {
if (data.user.id === 'user-id') {...
Multi arch docker image based on alpine
Is there any multi arch docker image for deno which includes arm?
Preferably built on alpine....
Deno.inspect, how to log class instances with getters
im trying to log a class instance that has getters in it, with
Deno.inspect
```ts
Deno.inspect(client, {
colors: true,...Synchronous read single line from Deno.stdin
Hi, how would I go about reading a single line from
Deno.stdin synchronously?How can I enable type checks while running fresh
I want to relay on the code being type checked and yelling at me when I made a mistake, but
deno task start in a fresh project doesn't seem to care by default. Is there some config I can change or at least some other script I can run in parallel to check the types?
(I also observed that VSCode plugin seems to indicate more type related errors than my Jetbrains IDE, does somebody know why?)...axios gives me a CORS error, fetch doesn't. Why is that?
NODE
```ts
import axios from 'axios';
let res = await axios('https://example-29544e.webflow.io').catch((err) => {
console.error(err);...
securing access for deno deploy?
We are creating a page using fresh, that is only for internal usage inside our company.
We would of course love to use deno deploy for it, but is there a good way to limit the access to both the rendered frontend and the API, maybe even with something similar to cloudflare access?
We are currently looking into a way to add a custom middleware, butaybe there are simpler solutions, or even alternative ways of hosting the page (without going through tons of infrastructure setup)?...
Learning how this works under the hood
Recommended resources to learn how this stuff works that can be understood by a dummy without a background in computer science?
For a guy like me, becoming proficient at coding amounted to more or less like learning what goes with what and remembering how to get things to happen. I'm very limited by my lack of understanding how any of this (runtimes, bundlers, compilers, etc etc) works under the hood. I want to level up....
Closing a websocket server in a unit test
Hello, I'm an author of rpc lib and I'm currently writing unit tests for it. I am facing a problem of closing a server. How should I do it without
deno hanging forever?
my test case:
```js
import { send, App } from './mod.ts'...Error The deployment failed Module not found
Error The deployment failed: Module not found "npm:@coingecko/cryptoformat".Link to module: https://www.npmjs.com/package/@coingecko/cryptoformat...
File name conventions
Some of my
.ts files are meant to be run from the command line.
Some of them when imported do things (like read .env files)
Is there a file naming convention for such things?...split error when using std toml
here's the error:
```
$ deno run -A toml.ts
error: Uncaught (in promise) TypeError: subStr.split is not a function
const lines = subStr.split("\n");...
How to cancel or abort .pipeTo()?
I prefer not asking, but after I found (what I consider) an MDN easter egg, I realized this is probably not something I'm going to solve without help from runtime-implementers. https://user-images.githubusercontent.com/17692058/200146738-da3e8747-6c7f-4ec7-adb8-fbb8c8947d33.png
The example is straightforward, call
stream1.pipeTo(stream2) then, with full access to both stream1 and stream2 try to shutdown/cancel/close/abort/sabotage/nuke stream1, stream2 or even just the pipe itself (copy-paste example below). The big issue is that, because of the pipeTo the deno process never ends. I've tried absolutely everything I can think of, including inheriting from WritableStream, prototype pollution hacks, accessing probably-shouldnt-be-accessed-directly-symbol keys, etc and I've not got a hint of success
```js...is it possible to change how tsx bundles to js?
So I’m wondering if it’s possible to get Deno to convert to ```js
{
tag: "div",...
<div class="test">Potato</div>
<div class="test">Potato</div>
can't load external modules when run as child process with Deno.spawnChild
Hi! This is really weird, but I'm trying to run deno scripts under another deno process with Deno.spawnChild(Deno.execPath(), {...})
Problem is the subprocess deno is unable to load any remote dependencies (mongo here just an example, even std modules fail to load):
error: Uncaught (in promise) TypeError: error sending request for url (https://deno.land/x/mongo@v0.30.0/mod.ts): error trying to connect: dns error: A non-recoverable error occurred during a database lookup. (os error 11003)...
turn off js with fetch?
i'd like to fetch only the html version of a website, if there is one. any ideas on how to do so?
Fresh fetch data in component
Hi I need help with Preact, I would like to do a fetch in a component using Handlers and then use that data in the same component without the component having props that would interfere with the parent component.