✨ (twitter) implement tweets in notes

src/utils/markdown/markdown-it-regexp.ts

@@ -0,0 +1,51 @@
+import MarkdownIt, { PluginSimple } from 'markdown-it'
+
+let counter = 0
+
+export const markdownItPlugin = (
+  regex: RegExp,
+  replacer: (matches: RegExpExecArray[]) => string
+): PluginSimple => {
+  const id = 'regexp-' + counter
+  counter++
+  const flags =
+    (regex.global ? 'g' : '') +
+    (regex.multiline ? 'm' : '') +
+    (regex.ignoreCase ? 'i' : '')
+
+  const regexp = RegExp('^' + regex.source, flags)
+
+  const parse = (state: any, silent: boolean) => {
+    const match = regexp.exec(state.src.slice(state.pos))
+
+    if (!match) {
+      return false
+    }
+
+    // valid match found, now we need to advance cursor
+    state.pos += match[0].length
+
+    // don't insert any tokens in silent mode
+    if (silent) {
+      return true
+    }
+
+    const token = state.push(id, '', 0)
+    token.meta = { match }
+
+    return true
+  }
+
+  const render = (
+    tokens: { meta: { match: RegExpExecArray[] } }[],
+    id: number
+  ) => {
+    return replacer(tokens[id].meta.match)
+  }
+
+  return (md: MarkdownIt) => {
+    md.inline.ruler.push(id, parse)
+
+    md.renderer.rules[id] = render
+  }
+}