修复在线IDE

hydro/lib/misc.js

@@ -4,6 +4,7 @@ exports.gravatar_url = function gravatarUrl(email, size) {
     return `//gravatar.loli.net/avatar/${md5((email || '').toString().trim().toLowerCase())}?d=mm&s=${size}`;
 };
 exports.datetime_span = function datetimeSpan(dt, relative = true, format = '%Y-%m-%d %H:%M:%S') {
+    if (!dt) return 'DATETIME_SPAN_ERROR';
     if (dt.generationTime) dt = new Date(dt.generationTime * 1000);
     else if (typeof dt === 'number' || typeof dt === 'string') dt = new Date(dt);
     return '<span class="time{0}" data-timestamp="{1}">{2}</span>'.format(

hydro/lib/template.js

@@ -16,6 +16,7 @@ class Nunjucks extends nunjucks.Environment {
         this.addFilter('json', (self) => JSON.stringify(self), false);
         this.addFilter('assign', (self, data) => Object.assign(self, data));
         this.addFilter('markdown', (self) => markdown.render(self));
+        this.addFilter('base64_encode', (s) => Buffer.from(s).toString('base64'));
         this.addFilter('gravatar_url', misc.gravatar_url);
         this.addFilter('format_size', misc.format_size);
         this.addGlobal('typeof', (o) => typeof o);