Use apply_text_edits to avoid making the unexpected indentation by '<CR>'

lua/cmp/utils/async_spec.lua

@@ -40,4 +40,30 @@ describe('utils.async', function()
     end)
     assert.is.truthy(math.abs(vim.loop.now() - now) < 10)
   end)
+  it('step', function()
+    local done = false
+    local step = {}
+    async.step(function(next)
+      vim.defer_fn(function()
+        table.insert(step, 1)
+        next()
+      end, 10)
+    end, function(next)
+      vim.defer_fn(function()
+        table.insert(step, 2)
+        next()
+      end, 10)
+    end, function(next)
+      vim.defer_fn(function()
+        table.insert(step, 3)
+        next()
+      end, 10)
+    end, function()
+      done = true
+    end)
+    vim.wait(1000, function()
+      return done
+    end)
+    assert.are.same(step, { 1, 2, 3 })
+  end)
 end)