Updated the files.

my-app/node_modules/memfs/lib/process.js

@@ -0,0 +1,42 @@
+"use strict";
+// Here we mock the global `process` variable in case we are not in Node's environment.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.createProcess = void 0;
+/**
+ * Looks to return a `process` object, if one is available.
+ *
+ * The global `process` is returned if defined;
+ * otherwise `require('process')` is attempted.
+ *
+ * If that fails, `undefined` is returned.
+ *
+ * @return {IProcess | undefined}
+ */
+var maybeReturnProcess = function () {
+    if (typeof process !== 'undefined') {
+        return process;
+    }
+    try {
+        return require('process');
+    }
+    catch (_a) {
+        return undefined;
+    }
+};
+function createProcess() {
+    var p = maybeReturnProcess() || {};
+    if (!p.cwd)
+        p.cwd = function () { return '/'; };
+    if (!p.nextTick)
+        p.nextTick = require('./setImmediate').default;
+    if (!p.emitWarning)
+        p.emitWarning = function (message, type) {
+            // tslint:disable-next-line:no-console
+            console.warn("".concat(type).concat(type ? ': ' : '').concat(message));
+        };
+    if (!p.env)
+        p.env = {};
+    return p;
+}
+exports.createProcess = createProcess;
+exports.default = createProcess();