add initial marp implementation with sample content and build configuration

node_modules/@marp-team/marpit/lib/helpers/wrap_tokens.js

@@ -0,0 +1,47 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+exports.wrapTokens = wrapTokens;
+/** @module */
+
+/**
+ * Wrap array of tokens by specified container object.
+ *
+ * @param {Token} Token markdown-it's Token class.
+ * @param {String} type Token type. It will be suffixed by `_open` / `_close`.
+ * @param {Object} container A container object to wrap tokens, includes tag
+ *     name and attributes.
+ * @param {String} container.tag The name of container element.
+ * @param {Object} [container.open] The object assigning to an opening token.
+ * @param {Object} [container.close] The object assigning to a closing token.
+ * @param {Token[]} [tokens=[]] Wrapping tokens.
+ * @returns {Token[]} Wrapped tokens.
+ */
+function wrapTokens(Token, type, container, tokens = []) {
+  const {
+    tag
+  } = container;
+
+  // Update nesting level of wrapping tokens
+  for (const t of tokens) t.level += 1;
+
+  // Create markdown-it tokens
+  const open = new Token(`${type}_open`, tag, 1);
+  const close = new Token(`${type}_close`, tag, -1);
+  Object.assign(open, {
+    ...(container.open || {})
+  });
+  Object.assign(close, {
+    ...(container.close || {})
+  });
+
+  // Assign attributes
+  for (const attr of Object.keys(container)) {
+    if (!['open', 'close', 'tag'].includes(attr) && container[attr] != null) open.attrSet(attr, container[attr]);
+  }
+  return [open, ...tokens, close];
+}
+var _default = exports.default = wrapTokens;