build: add decompress script

tools/decompress.js

@@ -0,0 +1,18 @@
+#! /usr/bin/env node
+const lzString = require('lz-string');
+const { readFileSync, writeFileSync } = require('fs');
+
+const OUT = 'out.json';
+
+const file = process.argv[process.argv.length - 1];
+
+const res = readFileSync(file, { encoding: 'utf8' });
+
+const decompressed = lzString.decompressFromUTF16(res);
+
+// that should normally work...
+// const decompressed = lzString.decompress(res);
+
+console.log(decompressed);
+
+writeFileSync(OUT, decompressed);