planning

node_modules/remark-parse/lib/tokenize/thematic-break.js

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+'use strict'
+
+module.exports = thematicBreak
+
+var tab = '\t'
+var lineFeed = '\n'
+var space = ' '
+var asterisk = '*'
+var dash = '-'
+var underscore = '_'
+
+var maxCount = 3
+
+function thematicBreak(eat, value, silent) {
+  var index = -1
+  var length = value.length + 1
+  var subvalue = ''
+  var character
+  var marker
+  var markerCount
+  var queue
+
+  while (++index < length) {
+    character = value.charAt(index)
+
+    if (character !== tab && character !== space) {
+      break
+    }
+
+    subvalue += character
+  }
+
+  if (
+    character !== asterisk &&
+    character !== dash &&
+    character !== underscore
+  ) {
+    return
+  }
+
+  marker = character
+  subvalue += character
+  markerCount = 1
+  queue = ''
+
+  while (++index < length) {
+    character = value.charAt(index)
+
+    if (character === marker) {
+      markerCount++
+      subvalue += queue + marker
+      queue = ''
+    } else if (character === space) {
+      queue += character
+    } else if (
+      markerCount >= maxCount &&
+      (!character || character === lineFeed)
+    ) {
+      subvalue += queue
+
+      if (silent) {
+        return true
+      }
+
+      return eat(subvalue)({type: 'thematicBreak'})
+    } else {
+      return
+    }
+  }
+}