convert yasnippet to vsnip

yasnippet-to-vsnip

" Roughly converts yasnippet format snippets to vsnip (vs code like) snippets
" performs in-place substitutions. make sure not to use autopairs plugin.
"
" example: 
"
" # -*- mode: snippet -*-
" # name: equals
" # key: eq
" # --
" public boolean equals(${1:Class} other) {
"        $0
" }
"
" will translate to:
"
" "equals": {
"     "prefix": "eq",
"     "description": "eq",
"     "body": [
"         "public boolean equals(${1:Class} other) {",
"                "$0",
"         "}"
"     ]
" },

function Convert() abort
    g/^$/d
    2norm 0df:r"A": {
    3norm 0df:xi"prefix": "
    3norm 0A",
    3norm yyp
    4s/prefix/description
    5s/.*/"body": [
    6,$norm I"
    6,$norm A",
    1d
    2,$>
    1,$>
    5,$>
    $norm $xo]
    $norm <o},
    $norm <
endfunction