stuff

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

@@ -0,0 +1,48 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.headingDivider = exports.default = void 0;
+var _split = require("../helpers/split");
+var _plugin = _interopRequireDefault(require("../plugin"));
+function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
+/** @module */
+
+/**
+ * Marpit heading divider plugin.
+ *
+ * Start a new slide page at before of headings by prepending hidden `<hr>`
+ * elements.
+ *
+ * @function headingDivider
+ * @param {MarkdownIt} md markdown-it instance.
+ */
+function _headingDivider(md) {
+  const {
+    marpit
+  } = md;
+  md.core.ruler.before('marpit_slide', 'marpit_heading_divider', state => {
+    let target = marpit.options.headingDivider;
+    if (marpit.lastGlobalDirectives && Object.prototype.hasOwnProperty.call(marpit.lastGlobalDirectives, 'headingDivider')) target = marpit.lastGlobalDirectives.headingDivider;
+    if (state.inlineMode || target === false) return;
+    if (Number.isInteger(target) && target >= 1 && target <= 6) target = [...Array(target).keys()].map(i => i + 1);
+    if (!Array.isArray(target)) return;
+    const splitTag = target.map(i => `h${i}`);
+    const splitFunc = t => t.type === 'heading_open' && splitTag.includes(t.tag);
+    const newTokens = [];
+    for (const slideTokens of (0, _split.split)(state.tokens, splitFunc, true)) {
+      const [token] = slideTokens;
+      if (token && splitFunc(token) && newTokens.some(t => !t.hidden)) {
+        const hr = new state.Token('hr', '', 0);
+        hr.hidden = true;
+        hr.map = token.map;
+        newTokens.push(hr);
+      }
+      newTokens.push(...slideTokens);
+    }
+    state.tokens = newTokens;
+  });
+}
+const headingDivider = exports.headingDivider = (0, _plugin.default)(_headingDivider);
+var _default = exports.default = headingDivider;