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542 Stars 53 Forks BSD 3-Clause "New" or "Revised" License 108 Commits 8 Opened issues


Syntax highlighting for Dart in Vim

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Dart Support for Vim

dart-vim-plugin provides filetype detection, syntax highlighting, and indentation for Dart code in Vim.

Looking for auto-complete, diagnostics as you type, jump to definition and other intellisense features? Try a vim plugin for the Language Server Protocol such as vim-lsc configured to start the Dart analysis server with the


Looking for an IDE experience? See the Dart Tools page.




Install as a typical vim plugin using your favorite approach. If you don't have a preference vim-plug is a good place to start. Below are examples for common choices, be sure to read the docs for each option.


call plug#begin()
Plug 'dart-lang/dart-vim-plugin'

call plug#end()

Then invoke

to install the plugin.


Clone the repository into your pathogen directory.

mkdir -p ~/.vim/bundle && cd ~/.vim/bundle && \
git clone

Ensure your

contains the line
execute pathogen#infect()


set rtp+=~/.vim/bundle/Vundle.vim
call vundle#begin()
Plugin 'dart-lang/dart-vim-plugin'

call vundle#end()


Enable HTML syntax highlighting inside Dart strings with

(default false).

Highlighting for specific syntax groups can be disabled by defining custom highlight group links. See

:help dart-syntax

Enable Dart style guide syntax (like 2-space indentation) with

let g:dart_style_guide = 2

Enable DartFmt execution on buffer save with

let g:dart_format_on_save = 1

Configure DartFmt options with

let g:dartfmt_options
(discover formatter options with
dartfmt -h


Why doesn't the plugin indent identically to

The indentation capabilities within vim are limited and it's not easy to fully express the indentation behavior of

. The major area where this plugin differs from
is indentation of function arguments when using a trailing comma in the argument list. When using a trailing comma (as is common in flutter widget code)
uses 2 space indent for argument parameters. In all other indentation following an open parenthesis (argument lists without a trailing comma, multi-line assert statements, etc)
uses 4 space indent. This plugin uses 4 space indent to match the most cases.

How do I configure an LSP plugin to start the analysis server?

The Dart SDK comes with an analysis server that can be run in LSP mode. The server ships with the SDK. Assuming the

directory of the SDK is at
the full command to run the analysis server in LSP mode is
$DART_SDK/dart $DART_SDK/snapshots/analysis_server.dart.snapshot --lsp
. If you'll be opening files outside of the
sent by your LSP client (usually
) you may want to pass
onlyAnalyzeProjectsWithOpenFiles: true
in the
. See the documentation for your LSP client for how to configure initialization options. If you are using the vim-lsc plugin there is an additional plugin which can configure everything for you at vim-lsc-dart. A minimal config for a good default experience using vim-plug would look like:
call plug#begin()
Plug 'dart-lang/dart-vim-plugin'
Plug 'natebosch/vim-lsc'
Plug 'natebosch/vim-lsc-dart'
call plug#end()

let g:lsc_auto_map = v:true

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