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const glob = require('glob');
const fs = require('fs');
const SVGOptimizer = require('svgo');
// node check_svg.js [failIfUncompressedSVGFound = true | false]
const failFlag = process.argv[2];
const failIfUncompressedSVGFound = failFlag !== undefined ? JSON.parse(failFlag) : true;
const svgo = new SVGOptimizer();
const globPath = 'app/views/shared/icons/*.svg';
const globOptions = { mark: true };
function error(err) {
console.error(err);
process.exit(1);
}
function saveOptimization(options) {
const { filepath, data, originalSize, failIfUncompressed } = options;
fs.writeFile(filepath, data, (err) => {
if (err) {
return error(err);
}
const compressedSize = fs.statSync(filepath).size;
const wasUncompressed = compressedSize < originalSize;
const compression = (100 - ((compressedSize / originalSize) * 100)).toFixed(2);
if (failIfUncompressed && wasUncompressed) {
error(`${filepath} was found to be uncompressed - could be compressed by ${compression}%`);
} else {
console.log(`${filepath} was compressed by ${compression}%`);
}
});
}
function optimize(filepath) {
fs.readFile(filepath, 'utf8', (err, data) => {
if (err) {
return error(err);
}
svgo.optimize(data, (result) => {
saveOptimization({
filepath,
data: result.data,
originalSize: fs.statSync(filepath).size,
failIfUncompressed: failIfUncompressedSVGFound,
});
});
});
}
glob(globPath, globOptions, (er, files) => {
files.forEach(filepath => optimize(filepath));
});
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