ComfyUI/web/scripts/pnginfo.js

// Shim for scripts\pnginfo.ts
export const getPngMetadata = window.comfyAPI.pnginfo.getPngMetadata;
export const getFlacMetadata = window.comfyAPI.pnginfo.getFlacMetadata;
export const getWebpMetadata = window.comfyAPI.pnginfo.getWebpMetadata;
export const getLatentMetadata = window.comfyAPI.pnginfo.getLatentMetadata;
export const importA1111 = window.comfyAPI.pnginfo.importA1111;