first commit

web-app/node_modules/fflate/lib/node-worker.cjs

@@ -0,0 +1,32 @@
+"use strict";
+// Mediocre shim
+var Worker;
+var workerAdd = ";var __w=require('worker_threads');__w.parentPort.on('message',function(m){onmessage({data:m})}),postMessage=function(m,t){__w.parentPort.postMessage(m,t)},close=process.exit;self=global";
+try {
+    Worker = require('worker_threads').Worker;
+}
+catch (e) {
+}
+exports.default = Worker ? function (c, _, msg, transfer, cb) {
+    var done = false;
+    var w = new Worker(c + workerAdd, { eval: true })
+        .on('error', function (e) { return cb(e, null); })
+        .on('message', function (m) { return cb(null, m); })
+        .on('exit', function (c) {
+        if (c && !done)
+            cb(new Error('exited with code ' + c), null);
+    });
+    w.postMessage(msg, transfer);
+    w.terminate = function () {
+        done = true;
+        return Worker.prototype.terminate.call(w);
+    };
+    return w;
+} : function (_, __, ___, ____, cb) {
+    setImmediate(function () { return cb(new Error('async operations unsupported - update to Node 12+ (or Node 10-11 with the --experimental-worker CLI flag)'), null); });
+    var NOP = function () { };
+    return {
+        terminate: NOP,
+        postMessage: NOP
+    };
+};

web-app/node_modules/fflate/lib/worker.cjs

@@ -0,0 +1,20 @@
+"use strict";
+var ch2 = {};
+exports.default = (function (c, id, msg, transfer, cb) {
+    var w = new Worker(ch2[id] || (ch2[id] = URL.createObjectURL(new Blob([
+        c + ';addEventListener("error",function(e){e=e.error;postMessage({$e$:[e.message,e.code,e.stack]})})'
+    ], { type: 'text/javascript' }))));
+    w.onmessage = function (e) {
+        var d = e.data, ed = d.$e$;
+        if (ed) {
+            var err = new Error(ed[0]);
+            err['code'] = ed[1];
+            err.stack = ed[2];
+            cb(err, null);
+        }
+        else
+            cb(null, d);
+    };
+    w.postMessage(msg, transfer);
+    return w;
+});