in scripts/build.js [140:157]
function minifyWithTerser(seriesPath, dirName) {
const terserPath = path.join(__dirname, '../node_modules/.bin/terser');
try {
execSync(
`${terserPath} ${seriesPath}/dist/index.js \
--compress \
--mangle \
--ecma 3 \
--comments all \
--source-map \
--output ${seriesPath}/dist/index.min.js`
);
console.log(`Minified custom series ${dirName} using Terser`);
} catch (e) {
console.error(`Error minifying custom series ${dirName}:`);
console.error(e.message);
}
}