remark-hbs.js

const visit = require('unist-util-visit');
const escapeHBS = node => {
  if(!node.value) {
    return;
  }
  if (((/^({{|<[A-Z]|<\/[A-Z])/g)).test(node.value)) {
    node.type = 'html';
  }
}

const removeParagraphsWithHTML = (ast) => {
  return (node) => {
    if (!node.children) {
      return
    }
    if (node.children[0].type === 'html') {
      let index = ast.children.findIndex((item) => item === node)
      ast.children.splice(index, 1, ...node.children);
    }
  }
}

module.exports = function() {
  return ast => {
    visit(ast, 'text', escapeHBS)
    visit(ast, 'paragraph', removeParagraphsWithHTML(ast))
  }
};