node-webp.ts/dist/cwebp.js

Convert image to webp and compress to save space with `cwebp` system program.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.cwebp = void 0;
const child_process_1 = require("child_process");
function cwebp(options, cb) {
    let cmd = [];
    if (options.preset) {
        cmd.push('-preset', options.preset);
    }
    if (options.hint) {
        cmd.push('-hint', options.hint);
    }
    if (options.low_memory) {
        cmd.push('-low_memory');
    }
    if (options.lossless) {
        cmd.push('-lossless');
    }
    if (options.near_lossless) {
        cmd.push('-near_lossless', String(options.near_lossless));
    }
    if (options.method) {
        cmd.push('-m', String(options.method));
    }
    if (options.quality) {
        cmd.push('-q', String(options.quality));
    }
    if (options.size) {
        cmd.push('-size', String(options.size));
    }
    if (options.auto_filter) {
        cmd.push('-af');
    }
    if (options.deblocking_filter) {
        cmd.push('-f', String(options.deblocking_filter));
    }
    if (options.spatial_noise_shaping) {
        cmd.push('-sns', String(options.spatial_noise_shaping));
    }
    if (options.metadata) {
        cmd.push('-metadata', options.metadata);
    }
    if (options.crop) {
        cmd.push('-crop', String(options.crop.left), String(options.crop.top), String(options.crop.width), String(options.crop.height));
    }
    if (options.resize) {
        cmd.push('-resize', String(options.resize.width), String(options.resize.height));
    }
    cmd.push('-o', options.output);
    cmd.push('--', options.input);
    if (cb) {
        let child = (0, child_process_1.spawn)('cwebp', cmd);
        child.on('close', cb);
    }
    else {
        return new Promise((resolve, reject) => {
            let child = (0, child_process_1.spawn)('cwebp', cmd);
            let error = '';
            child.stderr?.on('data', chunk => {
                error += chunk;
            });
            child.on('close', code => {
                if (!code) {
                    resolve(code);
                }
                else {
                    reject(error);
                }
            });
        });
    }
}
exports.cwebp = cwebp;