refactoring

packages/core/src/commands/replace.ts

@@ -0,0 +1,29 @@
+import { NodeType } from 'prosemirror-model'
+import getNodeType from '../helpers/getNodeType'
+import { Command } from '../types'
+
+export type Range = {
+  from: number,
+  to: number,
+}
+
+/**
+ * Replaces text with a node within a range.
+ */
+export const replace = (range: Range | null = null, typeOrName: string | NodeType, attrs = {}): Command => ({ tr, state, dispatch }) => {
+  const type = getNodeType(typeOrName, state.schema)
+  const { $from, $to } = state.selection
+  const index = $from.index()
+  const from = range ? range.from : $from.pos
+  const to = range ? range.to : $to.pos
+
+  if (!$from.parent.canReplaceWith(index, index, type)) {
+    return false
+  }
+
+  if (dispatch) {
+    tr.replaceWith(from, to, type.create(attrs))
+  }
+
+  return true
+}