planning

node_modules/remark-parse/lib/tokenize/delete.js

@@ -0,0 +1,60 @@
+'use strict'
+
+var whitespace = require('is-whitespace-character')
+var locate = require('../locate/delete')
+
+module.exports = strikethrough
+strikethrough.locator = locate
+
+var tilde = '~'
+var fence = '~~'
+
+function strikethrough(eat, value, silent) {
+  var self = this
+  var character = ''
+  var previous = ''
+  var preceding = ''
+  var subvalue = ''
+  var index
+  var length
+  var now
+
+  if (
+    !self.options.gfm ||
+    value.charAt(0) !== tilde ||
+    value.charAt(1) !== tilde ||
+    whitespace(value.charAt(2))
+  ) {
+    return
+  }
+
+  index = 1
+  length = value.length
+  now = eat.now()
+  now.column += 2
+  now.offset += 2
+
+  while (++index < length) {
+    character = value.charAt(index)
+
+    if (
+      character === tilde &&
+      previous === tilde &&
+      (!preceding || !whitespace(preceding))
+    ) {
+      /* istanbul ignore if - never used (yet) */
+      if (silent) {
+        return true
+      }
+
+      return eat(fence + subvalue + fence)({
+        type: 'delete',
+        children: self.tokenizeInline(subvalue, now)
+      })
+    }
+
+    subvalue += previous
+    preceding = previous
+    previous = character
+  }
+}