Fix crash when used with other tools

Author: wooorm

lib/index.js

@@ -19,7 +19,6 @@
  * @property {Array<SentenceInclusiveDescendant>} nodes
  */
 
-import {ok as assert} from 'devlop'
 import emojiRegex from 'emoji-regex'
 import {nameToEmoji} from 'gemoji'
 import {toString} from 'nlcst-to-string'
@@ -86,10 +85,12 @@ export function emojiModifier(node) {
       const child = nodes[index]
 
       if (child.type === 'EmoticonNode') {
+        // Always exists if we run, but other tools like
+        // `nlcst-emoticon-modifier` may not have it.
         const match = matchMap.get(child)
-        assert(match)
 
         if (
+          match &&
           previous &&
           previous.type === 'EmoticonNode' &&
           matchMap.get(previous) === match

package.json

@@ -33,7 +33,6 @@
   ],
   "dependencies": {
     "@types/nlcst": "^2.0.0",
-    "devlop": "^1.0.0",
     "emoji-regex": "^10.0.0",
     "gemoji": "^8.0.0",
     "nlcst-emoticon-modifier": "^3.0.0",