erasmus/dist/erasmus.js

A simple tool for literate programming

"use strict";
var __extends = (this && this.__extends) || function (d, b) {
    for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
    function __() { this.constructor = d; }
    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
var stream_1 = require('stream');
/**
 * Extracts code blocks from a Markdown document.
 */
function extractCode(markdown) {
    var regex = /^`{3}\w*$/gmu;
    return markdown
        .split(regex)
        .filter(function (_, index) { return index % 2 > 0; })
        .map(function (item) { return item.trim(); });
}
exports.extractCode = extractCode;
/**
 * Transform stream extracting code blocks from a readable stream of Markdown text.
 */
var CodeExtractor = (function (_super) {
    __extends(CodeExtractor, _super);
    function CodeExtractor(options) {
        _super.call(this, options);
        this.markdown = "";
    }
    CodeExtractor.prototype._transform = function (chunk, _, callback) {
        this.markdown += chunk;
        callback();
    };
    CodeExtractor.prototype._flush = function (callback) {
        this.push(extractCode(this.markdown).join("\n") + "\n");
        callback();
    };
    return CodeExtractor;
}(stream_1.Transform));
exports.CodeExtractor = CodeExtractor;