nvim-pack / lsp-fastaction.nvim

--- sample for dart with flutter
require('lsp-fastaction').setup({
    hide_cursor = true,
    action_data = {
      --- action for filetype dart
        ['dart'] = {
            -- pattern is a lua regex with lower case
            { pattern = 'import library', key = 'i', order = 1 },
            { pattern = 'wrap with widget', key = 'w', order = 2 },
            { pattern = 'wrap with column', key = 'c', order = 3 },
            { pattern = 'wrap with row', key = 'r', order = 3 },
            { pattern = 'wrap with sizedbox', key = 's', order = 3 },
            { pattern = 'wrap with container', key = 'C', order = 4 },
            { pattern = 'wrap with center', key = 'E', order = 4 },
            { pattern = 'padding', key = 'P', order = 4 },
            { pattern = 'wrap with streambuilder', key = 'S', order = 5 },
            { pattern = 'remove', key = 'R', order = 5 },

            --range code action
            { pattern = "surround with %'if'", key = 'i', order = 2 },
            { pattern = 'try%-catch', key = 't', order = 2 },
            { pattern = 'for%-in', key = 'f', order = 2 },
            { pattern = 'setstate', key = 's', order = 2 },
        },
        ['typescript'] = {
            { pattern = 'to existing import declaration', key = 'a', order = 2 },
            { pattern = 'from module', key = 'i', order = 1 },
        },
    },
})

--- add this to your mapping on lsp
    vim.api.nvim_buf_set_keymap(
        bufnr,
        'n',
        '<leader>a',
        '<cmd>lua require("lsp-fastaction").code_action()<CR>'
    )
    vim.api.nvim_buf_set_keymap(
        bufnr,
        'v',
        '<leader>a',
        "<esc><cmd>lua require('lsp-fastaction').range_code_action()<CR>",
    )