How to move the word under the cursor to the left or right in insert mode without plugins

Question

I'm really new to vim and I was searching for moving my single word or a line to move 'up' 'down' 'left' 'right' in insert mode I was able to achieve the up a line or block in visual mode and down a line or block in visual mode but now, I want the left and right motion like the vim plugin matze/vim-move but I don't want to use any plugins and instead use builtin function (If any that do the same) for moving up a line or down. I'm using

inoremap <silent> <A-J> <ESC>:m .+1<CR>==i
inoremap <silent> <A-K> <ESC>:m .-2<CR>==i

If there is anyway to do the same for left or right....??

Answer 1

You can use the following, somewhat hacky, maps to do this (inspired by the unimpaired plugin):

" move a small word left
imap ]w <ESC>mx$ox<ESC>kJ`xdawhelphmx$"_daw`xa
" move a big WORD left
imap ]W <ESC>mx$ox<ESC>kJ`xdaWElphmx$"_daw`xa
" move a small word right
imap [w <ESC>mx$ox<ESC>kJ`xdawbPhmx$"_daw`xa
" move a big WORD right
imap [W <ESC>mx$ox<ESC>kJ`xdaWBPhmx$"_daw`xa

In the above, 'big WORD' means (:help WORD):

WORD consists of a sequence of non-blank characters, separated with white space.

Advice

Since you say you're very new to vim (welcome!), I'll point out that normal mode is the place to do most 'editing' tasks like swapping words, lines and the like, while insert mode is predominantly for inserting text (hence the built in editing shortcuts are more limited). Often, newcomers feel more comfortable with insert mode since it has a more familiar 'feel' to editing with other editors. So my general advice is to embrace normal mode as the normal mode to be in while editing.