@groupsosimple/nativescript-image-generator/lib/before-prepare.js

Nativescript hook that generates platforms images based on a single high resolution image.

const { getImages } = require('./explorer');
const { getPlatformCache, savePlatformCache } = require('./cache');
const { generate } = require('./generator');
module.exports = async function ($projectData, $logger, hookArgs) {
    $logger.info('[ImageGenerator] Assets generation starting...');
    const { appResourcesDirectoryPath, platformsDir } = $projectData;
    const platform = hookArgs.prepareData.platform.toLowerCase();
    if (platform !== 'ios' && platform !== 'android') {
        return Promise.resolve();
    }
    // Get input images
    const images = await getImages(appResourcesDirectoryPath);
    // Get cached images
    const { images: cachedImages } = await getPlatformCache(platformsDir, platform);
    // Generate images
    const output = await generate(images, cachedImages, appResourcesDirectoryPath, platform);
    // Save cache
    await savePlatformCache({ images, output }, platformsDir, platform);
    $logger.info('[ImageGenerator] Assets generation finished.');
};