Bring back old libraries

packages/js/bin/build-icons-json.js

@@ -0,0 +1,19 @@
+import fs from 'fs';
+import path from 'path';
+
+import buildIconsObject from './build-icons-object';
+
+const IN_DIR = path.resolve(__dirname, '../icons');
+const OUT_FILE = path.resolve(__dirname, '../dist/icons.json');
+
+console.log(`Building ${OUT_FILE}...`);
+
+const svgFiles = fs
+  .readdirSync(IN_DIR)
+  .filter(file => path.extname(file) === '.svg');
+
+const getSvg = svgFile => fs.readFileSync(path.join(IN_DIR, svgFile));
+
+const icons = buildIconsObject(svgFiles, getSvg);
+
+fs.writeFileSync(OUT_FILE, JSON.stringify(icons));