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