27 lines
1.5 KiB
JavaScript
27 lines
1.5 KiB
JavaScript
"use strict";
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var __importDefault = (this && this.__importDefault) || function (mod) {
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return (mod && mod.__esModule) ? mod : { "default": mod };
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};
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const compose_1 = __importDefault(require("./compose"));
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const unescapeHtml_1 = __importDefault(require("./unescapeHtml"));
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const parseEmojis_1 = __importDefault(require("./parseEmojis"));
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// Since VuePress needs to extract the header from the markdown source
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// file and display it in the sidebar or title (#238), this file simply
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// removes some unnecessary elements to make header displays well at
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// sidebar or title.
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//
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// But header's parsing in the markdown content is done by the markdown
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// loader based on markdown-it. markdown-it parser will always keep
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// HTML in headers, so in VuePress, after being parsed by the markdown
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// loader, the raw HTML in headers will finally be parsed by Vue-loader.
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// so that we can write HTML/Vue in the header. One exception is the HTML
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// wrapped by <code>(markdown token: '`') tag.
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const removeMarkdownTokens = (str) => String(str)
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.replace(/(\[(.[^\]]+)\]\((.[^)]+)\))/g, '$2') // []()
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.replace(/(`|\*{1,3}|_)(.*?[^\\])\1/g, '$2') // `{t}` | *{t}* | **{t}** | ***{t}*** | _{t}_
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.replace(/(\\)(\*|_|`|\!|<)/g, '$2'); // remove escape char '\'
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const trim = (str) => str.trim();
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// Unescape html, parse emojis and remove some md tokens.
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const parseHeaders = compose_1.default(unescapeHtml_1.default, parseEmojis_1.default, removeMarkdownTokens, trim);
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module.exports = parseHeaders;
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