initial commit

lua/live-server.lua

@@ -0,0 +1,82 @@
+local M = {}
+
+local function log(message, level)
+    vim.notify_once(
+        string.format('import-cost.nvim: %s', message),
+        vim.log.levels[level]
+    )
+end
+
+M.config = {
+    -- let live-server handle the defaults
+    args = {},
+}
+
+M.setup = function(user_config)
+    M.config = vim.tbl_deep_extend('force', M.config, user_config or {})
+
+    if not vim.fn.executable 'live-server' then
+        log(
+            'live-server is not executable. Ensure the npm module is properly installed',
+            vim.log.levels.ERROR
+        )
+        return
+    end
+
+    vim.api.nvim_create_user_command('LiveServerStart', M.start, {})
+    vim.api.nvim_create_user_command('LiveServerStop', M.stop, {})
+end
+
+local job_cache = {}
+
+M.start = function()
+    local bufnr = vim.api.nvim_get_current_buf()
+
+    local cmd = { 'live-server' }
+    vim.list_extend(cmd, M.config.args)
+
+    if job_cache[bufnr] then
+        log('live-server instance already running', 'INFO')
+        return
+    end
+
+    local job_id = vim.fn.jobstart(cmd, {
+        on_stderr = function(_, data)
+            if data[1] == '' then
+                return
+            end
+
+            log(data[1]:match '.-m(.-)\27', 'ERROR')
+        end,
+        on_exit = function(_, exit_code)
+            job_cache[bufnr] = nil
+
+            if exit_code == 0 then
+                return
+            end
+
+            log(
+                string.format(
+                    'live-server stopped unexpectedly with exit code %s',
+                    exit_code
+                ),
+                'ERROR'
+            )
+        end,
+    })
+
+    job_cache[bufnr] = job_id
+end
+
+M.stop = function()
+    local bufnr = vim.api.nvim_get_current_buf()
+
+    if job_cache[bufnr] then
+        vim.fn.jobstop(job_cache[bufnr])
+        job_cache[bufnr] = nil
+    else
+        log('no live-server instance running', 'INFO')
+    end
+end
+
+return M