refactor: Use named exports instead of default exports (#2238)

* use named exports instead of default exports

* fix tests

Co-authored-by: Philipp Kühn <philippkuehn@MacBook-Pro-von-Philipp.local>

packages/core/src/inputRules/nodeInputRule.ts

@@ -1,13 +1,13 @@
 import { NodeType } from 'prosemirror-model'
 import { InputRule, InputRuleFinder } from '../InputRule'
 import { ExtendedRegExpMatchArray } from '../types'
-import callOrReturn from '../utilities/callOrReturn'
+import { callOrReturn } from '../utilities/callOrReturn'
 
 /**
  * Build an input rule that adds a node when the
  * matched text is typed into it.
  */
-export default function nodeInputRule(config: {
+export function nodeInputRule(config: {
   find: InputRuleFinder,
   type: NodeType,
   getAttributes?: