add initial marp implementation with sample content and build configuration

node_modules/@marp-team/marpit/lib/markdown/header_and_footer.js

@@ -0,0 +1,57 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.headerAndFooter = exports.default = void 0;
+var _wrap_tokens = require("../helpers/wrap_tokens");
+var _plugin = _interopRequireDefault(require("../plugin"));
+function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
+/** @module */
+
+/**
+ * Marpit header and footer plugin.
+ *
+ * At each slide, add header and footer that are provided by directives.
+ *
+ * @function headerAndFooter
+ * @param {MarkdownIt} md markdown-it instance.
+ */
+function _headerAndFooter(md) {
+  md.core.ruler.after('marpit_directives_apply', 'marpit_header_and_footer', state => {
+    if (state.inlineMode) return;
+    const parsedInlines = new Map();
+    const getParsed = markdown => {
+      let parsed = parsedInlines.get(markdown);
+      if (!parsed) {
+        parsed = md.parseInline(markdown, state.env);
+        delete parsed.map;
+        parsedInlines.set(markdown, parsed);
+      }
+      return parsed;
+    };
+    const createMarginalTokens = (tag, markdown) => (0, _wrap_tokens.wrapTokens)(state.Token, `marpit_${tag}`, {
+      tag,
+      close: {
+        block: true
+      }
+    }, getParsed(markdown));
+    let current;
+    const newTokens = [];
+    for (const token of state.tokens) {
+      if (token.type === 'marpit_slide_open') {
+        current = token;
+        newTokens.push(token);
+        if (current.meta && current.meta.marpitHeader) newTokens.push(...createMarginalTokens('header', current.meta.marpitHeader));
+      } else if (token.type === 'marpit_slide_close') {
+        if (current.meta && current.meta.marpitFooter) newTokens.push(...createMarginalTokens('footer', current.meta.marpitFooter));
+        newTokens.push(token);
+      } else {
+        newTokens.push(token);
+      }
+    }
+    state.tokens = newTokens;
+  });
+}
+const headerAndFooter = exports.headerAndFooter = (0, _plugin.default)(_headerAndFooter);
+var _default = exports.default = headerAndFooter;