feat: upgrade to node 12

.travis.yml

@@ -4,7 +4,7 @@ notifications:
   email: false
 
 node_js:
-  - 8
+  - 12
 
 before_install:
   - sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test

lib/render.js

@@ -5,7 +5,7 @@ var emoji = require('markdown-it-emoji')
 var expandTabs = require('markdown-it-expand-tabs')
 var githubTaskList = require('markdown-it-task-lists')
 
-var cleanup = require('./cleanup')
+// var cleanup = require('./cleanup')
 var githubLinkify = require('./linkify')
 
 var codeWrap = require('./plugin/code-wrap')
@@ -48,7 +48,11 @@ if (typeof process.browser === 'undefined') {
 
   // cleanup generated rules in the highlighter registry if they are idle for 2000ms
   // they take a tremendous amount of memory if you process many languages in a server type environment.
-  cleanup(highlighter.registry.grammars)
+
+  // this doesn't work with new highlights version,
+  // so we need to evaluate mem consumption due to this change
+  // before rolling this change out
+  // cleanup(highlighter.registry.grammars)
 }
 
 var render = module.exports = function (markdown, options) {

marky.json

@@ -1 +1 @@
-{"version":"12.0.3","repositoryUrl":"https://github.com/npm/marky-markdown","issuesUrl":"https://github.com/npm/marky-markdown/issues"}
+{"version":"13.0.0","repositoryUrl":"https://github.com/npm/marky-markdown","issuesUrl":"https://github.com/npm/marky-markdown/issues"}