Issue trying to overlay on a new page

[arthur-conde]

Hello,

import HummusRecipe from 'hummus-recipe';

const pdfToEdit = SOMEPATH;
const pdfToOverlay = ANOTHERPATH;

const recipe = new HummusRecipe(pdfToEdit, 'output.pdf');
recipe.createPage(612,792).overlay(pdfToOverlay, 0, 0, { fitWidth: true, fitHeight: true }).endPDF();

I'm getting this exception:

An error occurred trying to generate a signed PDF. TypeError: this.page.startContext is not a function
    at Recipe.resumeContext (/home/arthur/sources/doxcycle-online/node_modules/hummus-recipe/lib/page.js:200:38)
    at Recipe.overlay (/home/arthur/sources/doxcycle-online/node_modules/hummus-recipe/lib/overlay.js:43:10)

I tried to fix it in my fork but I don't know if it's the way to go about it. Works though.