Fix js-yaml tags for v4.0.0+ (#4869) (#4876)

Repair backwards compatibility https://github.com/nodeca/js-yaml/blob/master/migrate_v3_to_v4.md
with a bunch of plugins that use these yaml tags.

e.g.: https://github.com/lavas-project/hexo-pwa#options uses these yaml tags in the routes `!!js/regexp`

Co-authored-by: Marco Franssen <[email protected]>

Author: yoshinorin

lib/plugins/renderer/yaml.js

@@ -2,9 +2,10 @@
 
 const yaml = require('js-yaml');
 const { escape } = require('hexo-front-matter');
+const schema = yaml.DEFAULT_SCHEMA.extend(require('js-yaml-js-types').all);
 
 function yamlHelper(data) {
-  return yaml.load(escape(data.text));
+  return yaml.load(escape(data.text), { schema });
 }
 
 module.exports = yamlHelper;

package.json

@@ -50,6 +50,7 @@
     "hexo-log": "^2.0.0",
     "hexo-util": "^2.4.0",
     "js-yaml": "^4.0.0",
+    "js-yaml-js-types": "^1.0.0",
     "micromatch": "^4.0.2",
     "moment": "^2.22.2",
     "moment-timezone": "^0.5.21",