Overlay issue

Usage:

const HummusRecipe = require('hummus-recipe')
const pdfDoc = new HummusRecipe('input.pdf', 'output.pdf')
const pdfOverlay = 'overlay.pdf'
pdfDoc
    .editPage(1)
    .overlay(pdfOverlay, 0, 0)
    .endPage()
    .endPDF()

hummus-error.log:

[ 06/02/2018 16:57:15 ] UnicodeString::FromUTF16BE, fault string - high surrogat encountered without a low surrogate
[ 06/02/2018 16:57:15 ] UnicodeString::FromUTF16BE, fault string - high surrogat encountered without a low surrogate

Result:

PDF file was not changed, just copied from input to output.

Question:

Can you please help me out with this?

[chunyenHuang]

I think there is a bug in the overlay coordinate. Can you try without the x and y?

pdfDoc
    .editPage(1)
    .overlay(pdfOverlay)
    .endPage()
    .endPDF()

Besides this, the source code is from https://github.com/galkahana/HummusJS/blob/fdfe49b60b15c13c692885bdf5d9aae18d303f92/src/deps/PDFWriter/UnicodeString.cpp#L208

[chunyenHuang]

@tmwd Hello do you still have this issue?