@toolsycc/image-convert/dist/convert-sharp.js

A utility package for converting image formats.

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.convertToIco = convertToIco;
const sharp_1 = __importDefault(require("sharp"));
const to_ico_1 = __importDefault(require("to-ico"));
/**
 * Converts an image buffer to an ICO buffer.
 * Only usable in Node.js (uses sharp).
 */
async function convertToIco(inputBuffer, options) {
    if (!Buffer.isBuffer(inputBuffer)) {
        throw new Error('Input must be a Buffer');
    }
    const { autoOrient = true, stripMetadata = true, sizes = [16, 24, 32, 48, 64, 96, 128, 192, 256], } = options ?? {};
    const MIN_SIZE = 16;
    const MAX_SIZE = 256;
    for (const size of sizes) {
        if (size < MIN_SIZE || size > MAX_SIZE) {
            throw new Error(`Size ${size} is out of range. Must be between ${MIN_SIZE} and ${MAX_SIZE} pixels.`);
        }
    }
    const pngBuffers = await Promise.all(sizes.map(async (size) => {
        let sharpInstance = (0, sharp_1.default)(inputBuffer);
        if (autoOrient) {
            sharpInstance = sharpInstance.rotate();
        }
        return sharpInstance
            .resize(size, size, {
            fit: 'cover',
            kernel: sharp_1.default.kernel.cubic,
        })
            .ensureAlpha()
            .png({
            compressionLevel: 9,
        })
            .toBuffer();
    }));
    return await (0, to_ico_1.default)(pngBuffers);
}