1 files changed, 94 insertions, 0 deletions
diff --git a/packages/markdown-it-14.1.0/lib/rules_block/fence.mjs b/packages/markdown-it-14.1.0/lib/rules_block/fence.mjs
new file mode 100644
index 0000000..930f7b3
--- /dev/null
+++ b/packages/markdown-it-14.1.0/lib/rules_block/fence.mjs
@@ -0,0 +1,94 @@
+// fences (``` lang, ~~~ lang)
+
+export default function fence (state, startLine, endLine, silent) {
+  let pos = state.bMarks[startLine] + state.tShift[startLine]
+  let max = state.eMarks[startLine]
+
+  // if it's indented more than 3 spaces, it should be a code block
+  if (state.sCount[startLine] - state.blkIndent >= 4) { return false }
+
+  if (pos + 3 > max) { return false }
+
+  const marker = state.src.charCodeAt(pos)
+
+  if (marker !== 0x7E/* ~ */ && marker !== 0x60 /* ` */) {
+    return false
+  }
+
+  // scan marker length
+  let mem = pos
+  pos = state.skipChars(pos, marker)
+
+  let len = pos - mem
+
+  if (len < 3) { return false }
+
+  const markup = state.src.slice(mem, pos)
+  const params = state.src.slice(pos, max)
+
+  if (marker === 0x60 /* ` */) {
+    if (params.indexOf(String.fromCharCode(marker)) >= 0) {
+      return false
+    }
+  }
+
+  // Since start is found, we can report success here in validation mode
+  if (silent) { return true }
+
+  // search end of block
+  let nextLine = startLine
+  let haveEndMarker = false
+
+  for (;;) {
+    nextLine++
+    if (nextLine >= endLine) {
+      // unclosed block should be autoclosed by end of document.
+      // also block seems to be autoclosed by end of parent
+      break
+    }
+
+    pos = mem = state.bMarks[nextLine] + state.tShift[nextLine]
+    max = state.eMarks[nextLine]
+
+    if (pos < max && state.sCount[nextLine] < state.blkIndent) {
+      // non-empty line with negative indent should stop the list:
+      // - ```
+      //  test
+      break
+    }
+
+    if (state.src.charCodeAt(pos) !== marker) { continue }
+
+    if (state.sCount[nextLine] - state.blkIndent >= 4) {
+      // closing fence should be indented less than 4 spaces
+      continue
+    }
+
+    pos = state.skipChars(pos, marker)
+
+    // closing code fence must be at least as long as the opening one
+    if (pos - mem < len) { continue }
+
+    // make sure tail has spaces only
+    pos = state.skipSpaces(pos)
+
+    if (pos < max) { continue }
+
+    haveEndMarker = true
+    // found!
+    break
+  }
+
+  // If a fence has heading spaces, they should be removed from its inner block
+  len = state.sCount[startLine]
+
+  state.line = nextLine + (haveEndMarker ? 1 : 0)
+
+  const token   = state.push('fence', 'code', 0)
+  token.info    = params
+  token.content = state.getLines(startLine + 1, nextLine, len, true)
+  token.markup  = markup
+  token.map     = [startLine, state.line]
+
+  return true
+}