39 lines
1,002 B
JavaScript
39 lines
1,002 B
JavaScript
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const YAML = require('js-yaml');
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/**
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* Converts a string with front-matter
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* @param {String} str - String with front-matter
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* @param {Object} options - Object with Options
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* @returns {Object}
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*/
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const matter = (str = '', options) => {
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const { delimiters, parser: parse } = Object.assign(
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{
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delimiters: ['---', '---'],
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parser: YAML.load,
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},
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options,
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);
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const [open, close] = delimiters;
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const r1 = new RegExp(`^${open}[\r\n]`);
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const r2 = new RegExp(`[\r\n]${close}[\r\n]`);
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if (!(r1.test(str) && r2.test(str))) return { content: str };
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const x = r1.exec(str);
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const i = x[0].length;
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const y = r2.exec(str.substr(i));
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const j = i + y.index;
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const k = j + y[0].length;
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const front = str.substring(i, j);
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const data = parse(front);
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let content = str.slice(k);
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if (content[0] === '\r') {
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content = content.slice(1);
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}
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if (content[0] === '\n') {
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content = content.slice(1);
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}
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return { data, content };
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};
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module.exports = matter;
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