blaketarter/deno_playground

Deno

https://deno.land/

https://deno.land/v1

https://deno.land/manual

https://github.com/denolib/awesome-deno

Setup

1. Install Deno brew install deno
2. Setup vscode Deno plugin axetroy.vscode-deno
3. Go through https://deno.land/manual/getting_started/first_steps

Scripts

1. remote hello world deno run https://deno.land/std/examples/welcome.ts
2. local hello world deno run scripts/local-hello-world.ts
3. hello world server deno run --allow-net scripts/hello-world-server.ts
4. fetch a file deno run --allow-net=example.com scripts/fetch-url.ts http://example.com
5. read a file deno run --allow-read=./scripts scripts/read-file.ts scripts/read-file.ts

TS Config

1. https://deno.land/manual/getting_started/typescript

Lock File

1. deno run --lock=lock.json --lock-write ...

Local Deps cache

currently not working for me

1. set DENO_DIR environment variable
2. DENO_DIR=.deno deno run https://deno.land/std/examples/welcome.ts

Deps file (like a package.json)

1. create a deps file deps.ts
2. Re export from url imports export { Application, HandlerFunc } from "https://deno.land/x/abc/mod.ts";

Formatting

1. deno fmt --check check for errors
2. deno fmt auto format

Web Server

https://github.com/zhmushan/abc

1. deno run --allow-net scripts/abc-hello-world.ts
2. deno run --allow-net scripts/abc-params.ts

Pros

• TS support built in
• Secure permissions system
• Built in tools
  • formatter
  • bundler
  • test framework
  • debugger
  • std library
  • node compat library (still in early works)
  • built using rust
• ES module system built in (no require or module.exports)
• Web compat when appropriate

On the fence

• No package manager
  • I like not having to rely on one central repo
  • Having a deps.ts file mitigates most of the problems
• No script runner

Cons

• most npm packages are not compatible <- this is a big one