How to Change Key Bindings of vim-mode-plus

vim-mode-plus, which is a plugin for Atom editor doesn't have a feature to load vimrc files that are common in Vim editor. Therefore, we need to prepare keymap.cson, which is the keymap configuration file of Atom and init.coffee, which is an initial configuration file of Atom, to assign multiple commands to one command.

I will introduce an example that converts a vimrc file to init.coffee and keymap.cson.

Before Conversion

vimrc

noremap j gj
noremap k gk

noremap <S-j> 10j
noremap <S-k> 10k
noremap <S-h> 10h
noremap <S-l> 10l

After Conversion

init.coffee

atom.commands.add 'atom-text-editor.vim-mode-plus', 'custom:move-left-10', ->
  view = atom.views.getView atom.workspace.getActiveTextEditor()
  atom.commands.dispatch view, 'vim-mode-plus:set-count-1'
  atom.commands.dispatch view, 'vim-mode-plus:set-count-0'
  atom.commands.dispatch view, 'vim-mode-plus:move-left'

atom.commands.add 'atom-text-editor.vim-mode-plus', 'custom:move-down-screen-10', ->
  view = atom.views.getView atom.workspace.getActiveTextEditor()
  atom.commands.dispatch view, 'vim-mode-plus:set-count-1'
  atom.commands.dispatch view, 'vim-mode-plus:set-count-0'
  atom.commands.dispatch view, 'vim-mode-plus:move-down-screen'

atom.commands.add 'atom-text-editor.vim-mode-plus', 'custom:move-up-screen-10', ->
  view = atom.views.getView atom.workspace.getActiveTextEditor()
  atom.commands.dispatch view, 'vim-mode-plus:set-count-1'
  atom.commands.dispatch view, 'vim-mode-plus:set-count-0'
  atom.commands.dispatch view, 'vim-mode-plus:move-up-screen'

atom.commands.add 'atom-text-editor.vim-mode-plus', 'custom:move-right-10', ->
  view = atom.views.getView atom.workspace.getActiveTextEditor()
  atom.commands.dispatch view, 'vim-mode-plus:set-count-1'
  atom.commands.dispatch view, 'vim-mode-plus:set-count-0'
  atom.commands.dispatch view, 'vim-mode-plus:move-right'

keymap.cson

'atom-text-editor.vim-mode-plus:not(.insert-mode)':
  'shift-h': 'custom:move-left-10'
  'shift-j': 'custom:move-down-screen-10'
  'shift-k': 'custom:move-up-screen-10'
  'shift-l': 'custom:move-right-10'
  'h': 'vim-mode-plus:move-left'
  'j': 'vim-mode-plus:move-down-screen'
  'k': 'vim-mode-plus:move-up-screen'
  'l': 'vim-mode-plus:move-right'