@athenox/talos/dist/images.js

Talos: a backend you describe instead of write. Declare a schema, write the rules in plain language, map URLs to sentences; a small built-in model turns them into query plans.

import { createRequire } from 'node:module';
import { join } from 'node:path';
let lib;
/**
 * sharp, from the app's own dependencies — Talos does not ship an image
 * library, the app that stores images does. `useImages(sharp)` sets it
 * explicitly; otherwise it is imported by name (a literal import, so a
 * bundler's file tracing copies it into a production build — `.output` run on
 * its own had no sharp), then looked up from the working directory.
 */
export function useImages(sharp) { lib = sharp; }
async function sharp() {
    if (lib)
        return lib;
    try {
        // @ts-ignore — optional peer dependency, not installed with Talos itself
        const m = await import('sharp');
        lib = m.default ?? m;
    }
    catch {
        try {
            lib = createRequire(join(process.cwd(), 'package.json'))('sharp');
        }
        catch {
            throw new Error('image processing needs sharp: npm install sharp (or call useImages(sharp))');
        }
    }
    return lib;
}
export const extOf = (o) => o.format ? `.${o.format === 'jpeg' ? 'jpg' : o.format}` : undefined;
export async function imageSize(data) {
    const m = await (await sharp())(data).metadata();
    return { width: m.width, height: m.height };
}
export async function processImage(data, o) {
    let img = (await sharp())(data, { failOn: 'error' }).rotate();
    if (o.width || o.height)
        img = img.resize({ width: o.width, height: o.height, fit: o.fit ?? 'inside', withoutEnlargement: !(o.enlarge ?? o.fit === 'cover') });
    if (o.keepMetadata)
        img = img.keepMetadata();
    if (o.format)
        img = img.toFormat(o.format, o.quality ? { quality: o.quality } : {});
    else if (o.quality)
        img = img.jpeg({ quality: o.quality });
    return img.toBuffer();
}