const fs = require('fs');
const MetaParser = require('markdown-yaml-meta');

const target = path.resolve(__dirname. './blog.md');

const data = MetaParser(target);
console.log(data);
/*
    {
        "layout": "post",
        "title": "Hello World",
        "date": "2018-04-26 00:00:00",
        "author": "linrunze"
        "tags": "['Node.js']"
    }
*/

const dataWithPreview = MetaParser(target, { preview: { length: 10 } });
console.log(dataWithPreview);
/*
    {
        ...
        "preview": "#Hello\n He"
    }
*/

const dataWithRawPreview = MetaParser(target, { preview: { length: 10, raw: true } });
console.log(dataWithRawPreview);
/*
    {
        ...
        "preview": "Hello Wrol"
    }
*/