planning

node_modules/remark-stringify/lib/visitors/code.js

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+'use strict'
+
+var streak = require('longest-streak')
+var repeat = require('repeat-string')
+var pad = require('../util/pad')
+
+module.exports = code
+
+var lineFeed = '\n'
+var space = ' '
+
+// Stringify code.
+// Creates indented code when:
+//
+// - No language tag exists
+// - Not in `fences: true` mode
+// - A non-empty value exists
+//
+// Otherwise, GFM fenced code is created:
+//
+// ````markdown
+// ```js
+// foo();
+// ```
+// ````
+//
+// When in ``fence: `~` `` mode, uses tildes as fences:
+//
+// ```markdown
+// ~~~js
+// foo();
+// ~~~
+// ```
+//
+// Knows about internal fences:
+//
+// `````markdown
+// ````markdown
+// ```javascript
+// foo();
+// ```
+// ````
+// `````
+function code(node, parent) {
+  var self = this
+  var value = node.value
+  var options = self.options
+  var marker = options.fence
+  var info = node.lang || ''
+  var fence
+
+  if (info && node.meta) {
+    info += space + node.meta
+  }
+
+  info = self.encode(self.escape(info, node))
+
+  // Without (needed) fences.
+  if (!info && !options.fences && value) {
+    // Throw when pedantic, in a list item which isn’t compiled using a tab.
+    if (
+      parent &&
+      parent.type === 'listItem' &&
+      options.listItemIndent !== 'tab' &&
+      options.pedantic
+    ) {
+      self.file.fail(
+        'Cannot indent code properly. See https://git.io/fxKR8',
+        node.position
+      )
+    }
+
+    return pad(value, 1)
+  }
+
+  fence = repeat(marker, Math.max(streak(value, marker) + 1, 3))
+
+  return fence + info + lineFeed + value + lineFeed + fence
+}