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Setup your environment
To productively get going with Deno you should set up your environment. This means setting up shell autocomplete, environmental variables and your editor or IDE of choice.
Environmental variables
There are several env vars that control how Deno behaves:
DENO_DIR defaults to $HOME/.deno but can be set to any path to control where
generated and cached source code is written and read to.
NO_COLOR will turn off color output if set. See https://no-color.org/. User
code can test if NO_COLOR was set without having --allow-env by using the
boolean constant Deno.noColor.
Shell autocomplete
You can generate completion script for your shell using the
deno completions <shell> command. The command outputs to stdout so you should
redirect it to an appropriate file.
The supported shells are:
- zsh
- bash
- fish
- powershell
- elvish
Example:
deno completions bash > /usr/local/etc/bash_completion.d/deno.bash
source /usr/local/etc/bash_completion.d/deno.bash
Editors and IDEs
Because Deno requires the use of file extensions for module imports and allows http imports, and most editors and language servers do not natively support this at the moment, many editors will throw errors about being unable to find files or imports having unnecessary file extensions.
The community has developed extensions for some editors to solve these issues:
Support for JetBrains IDEs is not yet available, but you can follow and upvote these issues to stay up to date:
- https://youtrack.jetbrains.com/issue/WEB-41607
- https://youtrack.jetbrains.com/issue/WEB-42983
- https://youtrack.jetbrains.com/issue/WEB-31667
If you don't see your favorite IDE on this list, maybe you can develop an extension. Our community Discord group can give you some pointers on where to get started.