windows10 node-canvas cannot register existing type 'PangoCairoFontMap

[DannyWin]

Possible bug

Are you using the latest version of sharp?

yes, sharp 0.32.3

What is the output of running npx envinfo --binaries --system --npmPackages=sharp --npmGlobalPackages=sharp?

System:
OS: Windows 10 10.0.19045
CPU: (16) x64 AMD Ryzen 7 5800H with Radeon Graphics
Memory: 6.62 GB / 15.36 GB
Binaries:
Node: 14.21.3 - C:\Program Files\nodejs\node.EXE
npm: 6.14.18 - C:\Program Files\nodejs\npm.CMD
pnpm: 7.17.0 - ~\AppData\Roaming\npm\pnpm.CMD
npmPackages:
sharp: ^0.32.1 => 0.32.3

What are the steps to reproduce?

install sharp 0.32.3
install canvas 2.11.2

What is the expected behaviour?

Overlay text and canvas images on a basemap

Please provide a minimal, standalone code sample, without other dependencies, that demonstrates this problem

import { createCanvas} from 'canvas';
import sharp from 'sharp';

const basePicture='./test.png'
const textArray = [
    {
      input: {
        text: {
          font: 'OPPOSans',
          fontfile: './assets/font/OPPOSans-R.ttf',
          align: 'right',
          text: `<span foreground='#333999' size='150'>text words</span>`,
          rgba: true,
          width: 600,
          height: 60,
        },
      },
      top: 462,
      left: 220,
    },
  ],
const textBuffer=sharp(basePicture).composite(textArray).withMetadata().toBuffer();

const canvas = createCanvas(100, 100);
const context = canvas.getContext('2d');
const width = canvas.width / 2;
const height = canvas.height / 2;
const borderWidth = 3;
context.lineWidth = borderWidth;
context.strokeStyle = SEAL_COLOR;
context.beginPath();
context.arc(width, height, width - borderWidth, 0, Math.PI * 2);
context.shadowColor = SEAL_COLOR;
context.shadowBlur = 1.3;
context.stroke();
context.rotate(0);
context.globalCompositeOperation = 'destination-out';
const canvasBuffer=canvas.toBuffer()

const  imageArray = [
    {
      input:textBuffer,
      top: 200,
      left: 72,
    },
   {
      input:canvasBuffer,
      top: 300,
      left: 72,
    },
  ],

sharp(basePicture).composite(imageArray).withMetadata().toBuffer()

Please provide sample image(s) that help explain this problem

verion 0.32.3 0.32.2 0.32.1 0.32.0 have this problem
If I only overlay text on the basemap, there is no problem.

const  imageArray = [
    {
      input:textBuffer,
      top: 200,
      left: 72,
    },
  ],

If I only overlay canvas on the basemap, there is no problem.

const  imageArray = [
   {
      input:canvasBuffer,
      top: 300,
      left: 72,
    },
  ],

If I overlay both text and canvas on the basemap, it shows error below.

const  imageArray = [
    {
      input:textBuffer,
      top: 200,
      left: 72,
    },
   {
      input:canvasBuffer,
      top: 300,
      left: 72,
    },
  ],

Looks like text overlay and image overlay repeated register PangoFontMap

(process:19072): GLib-GObject-CRITICAL **: 14:41:14.016: **cannot register existing type 'PangoFontMap'**

(process:19072): GLib-GObject-CRITICAL **: 14:41:14.017: cannot add private field to invalid (non-instant

(process:19072): GLib-GObject-CRITICAL **: 14:41:14.017: cannot register existing type 'GListModel'

(process:19072): GLib-GObject-CRITICAL **: 14:41:14.017: g_type_interface_add_prerequisite: assertion 'G_

(process:19072): GLib-CRITICAL **: 14:41:14.017: g_once_init_leave: assertion 'result != 0' failed

(process:19072): GLib-GObject-CRITICAL **: 14:41:14.018: g_type_add_interface_static: assertion 'G_TYPE_I

(process:19072): GLib-CRITICAL **: 14:41:14.018: g_once_init_leave: assertion 'result != 0' failed

(process:19072): GLib-GObject-CRITICAL **: 14:41:14.018: g_type_register_static: assertion 'parent_type >

(process:19072): GLib-CRITICAL **: 14:41:14.018: g_once_init_leave: assertion 'result != 0' failed

(process:19072): GLib-GObject-CRITICAL **: 14:41:14.019: g_type_register_static: assertion 'parent_type >

(process:19072): GLib-GObject-CRITICAL **: 14:41:14.019: cannot register existing type 'PangoCairoFontMap

[lovell]

This has come up before, please see #2531

I'm unsure there's any solution for Windows users based on the way canvas currently provides prebuilt DLLs. It's possible Automattic/node-canvas#813 might help solve this.

[lovell]

See my comment on a similar issue - #3766 (comment) - not a lot we can do here, good luck.

[mrchoke]

I have come across a recurring issue on a Docker container using Debian image.

[lovell]

@mrchoke If you're still having problems, please open a new question and provide a complete, minimal (i.e. as few other dependencies as possible) code sample and list of dependencies (must all be the latest available) that allows someone else to reproduce, ideally as a standalone repo.