front-matter-markdown/lib/markdown/ast-builder.js

get the config and toc object from the markdown string.

(function() {
  var AstBuilder, isArray, renderHandlerArgs;

  renderHandlerArgs = {
    code: ['code', 'lang', 'escaped', 'fenced'],
    blockquote: ['quote'],
    html: ['html'],
    heading: ['text', 'level', 'raw'],
    hr: [],
    list: ['body', 'ordered'],
    listitem: ['text'],
    paragraph: ['text'],
    table: ['header', 'body'],
    tablerow: ['content'],
    tablecell: ['content', 'flags'],
    strong: ['text'],
    em: ['text'],
    codespan: ['text'],
    br: [],
    del: ['text'],
    link: ['href', 'title', 'text'],
    image: ['href', 'title', 'text'],
    footnote: ['refname', 'text'],
    math: ['content', 'language', 'visible']
  };

  isArray = require('util-ex/lib/is/type/array');

  module.exports = AstBuilder = (function() {
    var k, makeHandler, v;

    function AstBuilder() {}

    makeHandler = function(type, args) {
      return function() {
        var i, result, v;
        result = {
          type: type
        };
        i = -1;
        while (++i < args.length) {
          v = arguments[i];
          if (v == null) {
            continue;
          }
          if (isArray(v) && v.length === 1) {
            v = v[0];
          }
          result[args[i]] = v;
        }
        return result;
      };
    };

    for (k in renderHandlerArgs) {
      v = renderHandlerArgs[k];
      AstBuilder.prototype[k] = makeHandler(k, v);
    }

    return AstBuilder;

  })();

}).call(this);

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