4 files changed, 50 insertions, 0 deletions

diff --git a/shared/core-utils/index.ts b/shared/core-utils/index.ts
index 54e233522..42d7cab1d 100644
--- a/shared/core-utils/index.ts
+++ b/shared/core-utils/index.ts
@@ -1,3 +1,7 @@
+export * from './abuse'
+export * from './i18n'
 export * from './logs'
 export * from './miscs'
 export * from './plugins'
+export * from './renderer'
+export * from './users'
diff --git a/shared/core-utils/renderer/html.ts b/shared/core-utils/renderer/html.ts
new file mode 100644
index 000000000..37ae5147c
--- /dev/null
+++ b/shared/core-utils/renderer/html.ts
@@ -0,0 +1,21 @@
+export const SANITIZE_OPTIONS = {
+  allowedTags: [ 'a', 'p', 'span', 'br', 'strong', 'em', 'ul', 'ol', 'li' ],
+  allowedSchemes: [ 'http', 'https' ],
+  allowedAttributes: {
+    a: [ 'href', 'class', 'target', 'rel' ]
+  },
+  transformTags: {
+    a: (tagName, attribs) => {
+      let rel = 'noopener noreferrer'
+      if (attribs.rel === 'me') rel += ' me'
+
+      return {
+        tagName,
+        attribs: Object.assign(attribs, {
+          target: '_blank',
+          rel
+        })
+      }
+    }
+  }
+}
diff --git a/shared/core-utils/renderer/index.ts b/shared/core-utils/renderer/index.ts
new file mode 100644
index 000000000..0ad29d782
--- /dev/null
+++ b/shared/core-utils/renderer/index.ts
@@ -0,0 +1,2 @@
+export * from './markdown'
+export * from './html'
diff --git a/shared/core-utils/renderer/markdown.ts b/shared/core-utils/renderer/markdown.ts
new file mode 100644
index 000000000..dff746d87
--- /dev/null
+++ b/shared/core-utils/renderer/markdown.ts
@@ -0,0 +1,23 @@
+export const TEXT_RULES = [
+  'linkify',
+  'autolink',
+  'emphasis',
+  'link',
+  'newline',
+  'list'
+]
+
+export const TEXT_WITH_HTML_RULES = TEXT_RULES.concat([
+  'html_inline',
+  'html_block'
+])
+
+export const ENHANCED_RULES = TEXT_RULES.concat([ 'image' ])
+export const ENHANCED_WITH_HTML_RULES = TEXT_WITH_HTML_RULES.concat([ 'image' ])
+
+export const COMPLETE_RULES = ENHANCED_WITH_HTML_RULES.concat([
+  'block',
+  'inline',
+  'heading',
+  'paragraph'
+])