@enkidevs/curriculum-compiler-string/index.js

Compiles Enki Curriculum AST into a markdown string

const unified = require('unified');
const { contentTypes } = require('@enkidevs/curriculum-helpers');
const plugins = require('./plugins');

function getPlugins(type) {
  switch (type) {
    case contentTypes.MARKDOWN:
      return [...plugins.markdown];
    case contentTypes.EXERCISE:
    case contentTypes.INSIGHT:
      return [...plugins.markdown, ...plugins.insight, ...plugins.question];
    case contentTypes.QUESTION:
      return [...plugins.markdown, ...plugins.question];
    default:
      throw new Error(`Invalid content type type: ${type}`);
  }
}

function getCompiler(type) {
  function compile(ast) {
    return new Promise((resolve, reject) => {
      const processor = unified().use(getPlugins(type));
      processor.run(ast, (err, res) =>
        err ? reject(err) : resolve(processor.stringify(res))
      );
    });
  }

  function compileSync(ast) {
    return unified().use(getPlugins(type)).stringify(ast);
  }

  return {
    compile,
    compileSync,
  };
}

module.exports = {
  getCompiler,
};