Don't assume that converse is a global

.eslintrc.json

@@ -15,7 +15,6 @@
     "globals": {
         "Uint8Array": true,
         "Promise": true,
-        "converse": true,
         "define": true,
         "require": true,
         "sinon": true,

Makefile

@@ -194,7 +194,7 @@ eslint: node_modules
 	$(ESLINT) src/utils/*.js
 	$(ESLINT) src/headless/*.js
 	$(ESLINT) src/headless/utils/*.js
-	$(ESLINT) spec/
+	$(ESLINT) spec/ --global converse
 
 .PHONY: check
 check: dev eslint

src/components/emoji-picker-content.js

 import sizzle from 'sizzle';
 import { CustomElement } from './element.js';
-import { _converse, api } from "@converse/headless/converse-core";
+import { _converse, converse, api } from "@converse/headless/converse-core";
 import { html } from "lit-element";
 import { tpl_all_emojis, tpl_search_results } from "../templates/emoji_picker.js";