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117 lines
3.8 KiB
Markdown
117 lines
3.8 KiB
Markdown
## Set up your environment
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To productively get going with Deno you should set up your environment. This
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means setting up shell autocomplete, environmental variables and your editor or
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IDE of choice.
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### Environmental variables
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There are several env vars that control how Deno behaves:
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`DENO_DIR` defaults to `$HOME/.cache/deno` but can be set to any path to control
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where generated and cached source code is written and read to.
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`NO_COLOR` will turn off color output if set. See https://no-color.org/. User
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code can test if `NO_COLOR` was set without having `--allow-env` by using the
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boolean constant `Deno.noColor`.
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### Shell autocomplete
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You can generate completion script for your shell using the
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`deno completions <shell>` command. The command outputs to stdout so you should
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redirect it to an appropriate file.
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The supported shells are:
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- zsh
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- bash
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- fish
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- powershell
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- elvish
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Example (bash):
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```shell
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deno completions bash > /usr/local/etc/bash_completion.d/deno.bash
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source /usr/local/etc/bash_completion.d/deno.bash
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```
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Example (zsh):
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```shell
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mkdir ~/.oh-my-zsh/custom/plugins/deno
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deno completions zsh > ~/.oh-my-zsh/custom/plugins/deno/_deno
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```
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After this add `deno` plugin under plugins tag in `~/.zshrc` file.
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### Editors and IDEs
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Because Deno requires the use of file extensions for module imports and allows
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http imports, and most editors and language servers do not natively support this
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at the moment, many editors will throw errors about being unable to find files
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or imports having unnecessary file extensions.
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The community has developed extensions for some editors to solve these issues:
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#### VS Code
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The beta version of [vscode_deno](https://github.com/denoland/vscode_deno) is
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published on the
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[Visual Studio Marketplace](https://marketplace.visualstudio.com/items?itemName=denoland.vscode-deno).
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Please report any issues.
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#### JetBrains IDEs
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Support for JetBrains IDEs is available through
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[the Deno plugin](https://plugins.jetbrains.com/plugin/14382-deno).
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For more information on how to set-up your JetBrains IDE for Deno, read
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[this comment](https://youtrack.jetbrains.com/issue/WEB-41607#focus=streamItem-27-4160152.0-0)
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on YouTrack.
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#### Vim and NeoVim
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Vim works fairly well for Deno/TypeScript if you install
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[CoC](https://github.com/neoclide/coc.nvim) (intellisense engine and language
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server protocol).
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After CoC is installed, from inside Vim, run`:CocInstall coc-tsserver` and
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`:CocInstall coc-deno`. To get autocompletion working for Deno type definitions
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run `:CocCommand deno.types`. Optionally restart the CoC server `:CocRestart`.
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From now on, things like `gd` (go to definition) and `gr` (goto/find references)
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should work.
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#### Emacs
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Emacs works pretty well for a TypeScript project targeted to Deno by using a
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combination of [tide](https://github.com/ananthakumaran/tide) which is the
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canonical way of using TypeScript within Emacs and
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[typescript-deno-plugin](https://github.com/justjavac/typescript-deno-plugin)
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which is what is used by the
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[official VSCode extension for Deno](https://github.com/denoland/vscode_deno).
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To use it, first make sure that `tide` is setup for your instance of Emacs.
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Next, as instructed on the
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[typescript-deno-plugin](https://github.com/justjavac/typescript-deno-plugin)
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page, first `npm install --save-dev typescript-deno-plugin typescript` in your
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project (`npm init -y` as necessary), then add the following block to your
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`tsconfig.json` and you are off to the races!
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```json
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{
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"compilerOptions": {
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"plugins": [
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{
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"name": "typescript-deno-plugin",
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"enable": true, // default is `true`
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"importmap": "import_map.json"
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}
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]
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}
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}
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```
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If you don't see your favorite IDE on this list, maybe you can develop an
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extension. Our [community Discord group](https://discord.gg/deno) can give you
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some pointers on where to get started.
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