planning

node_modules/mdast-util-gfm/from-markdown.js

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+var autolinkLiteral = require('mdast-util-gfm-autolink-literal/from-markdown')
+var strikethrough = require('mdast-util-gfm-strikethrough/from-markdown')
+var table = require('mdast-util-gfm-table/from-markdown')
+var taskListItem = require('mdast-util-gfm-task-list-item/from-markdown')
+
+var own = {}.hasOwnProperty
+
+module.exports = configure([
+  autolinkLiteral,
+  strikethrough,
+  table,
+  taskListItem
+])
+
+function configure(extensions) {
+  var config = {transforms: [], canContainEols: []}
+  var length = extensions.length
+  var index = -1
+
+  while (++index < length) {
+    extension(config, extensions[index])
+  }
+
+  return config
+}
+
+function extension(config, extension) {
+  var key
+  var left
+  var right
+
+  for (key in extension) {
+    left = own.call(config, key) ? config[key] : (config[key] = {})
+    right = extension[key]
+
+    if (key === 'canContainEols' || key === 'transforms') {
+      config[key] = [].concat(left, right)
+    } else {
+      Object.assign(left, right)
+    }
+  }
+}