diff --git a/ext/wasm/GNUmakefile b/ext/wasm/GNUmakefile
index 3c6b3c9a15..eb23dc28bb 100644
--- a/ext/wasm/GNUmakefile
+++ b/ext/wasm/GNUmakefile
@@ -287,10 +287,10 @@ sqlite3-api.jses += $(dir.common)/whwasmutil.js
 sqlite3-api.jses += $(dir.jacc)/jaccwabyt.js
 sqlite3-api.jses += $(dir.api)/sqlite3-api-glue.js
 sqlite3-api.jses += $(sqlite3-api-build-version.js)
-sqlite3-api.jses += $(dir.api)/sqlite3-vfs-helper.js
 sqlite3-api.jses += $(dir.api)/sqlite3-api-oo1.js
 sqlite3-api.jses += $(dir.api)/sqlite3-api-worker1.js
-sqlite3-api.jses += $(dir.api)/sqlite3-api-opfs.js
+sqlite3-api.jses += $(dir.api)/sqlite3-vfs-helper.js
+sqlite3-api.jses += $(dir.api)/sqlite3-vfs-opfs.js
 sqlite3-api.jses += $(dir.api)/sqlite3-api-cleanup.js
 
 # "External" API files which are part of our distribution
diff --git a/ext/wasm/api/README.md b/ext/wasm/api/README.md
index 37d986584e..3a14229679 100644
--- a/ext/wasm/api/README.md
+++ b/ext/wasm/api/README.md
@@ -52,11 +52,6 @@ browser client:
   Gets created by the build process and populates the
   `sqlite3.version` object. This part is not critical, but records the
   version of the library against which this module was built.
-- **`sqlite3-vfs-helper.js`**\  
-  This internal-use-only file installs `sqlite3.VfsHelper` for use by
-  `sqlite3-api-*.js` files which create `sqlite3_vfs` implemenations.
-  `sqlite3.VfsHelper` gets removed from the the `sqlite3` object after
-  the library is finished initializing.
 - **`sqlite3-api-oo1.js`**\  
   Provides a high-level object-oriented wrapper to the lower-level C
   API, colloquially known as OO API #1. Its API is similar to other
@@ -79,7 +74,12 @@ browser client:
       a Promise-based interface into the Worker #1 API. This is
       a far user-friendlier way to interface with databases running
       in a Worker thread.
-- **`sqlite3-api-opfs.js`**\  
+- **`sqlite3-vfs-helper.js`**\  
+  This internal-use-only file installs `sqlite3.VfsHelper` for use by
+  `sqlite3-*.js` files which create `sqlite3_vfs` implemenations.
+  `sqlite3.VfsHelper` gets removed from the the `sqlite3` object after
+  the library is finished initializing.
+- **`sqlite3-vfs-opfs.js`**\  
   is an sqlite3 VFS implementation which supports Google Chrome's
   Origin-Private FileSystem (OPFS) as a storage layer to provide
   persistent storage for database files in a browser. It requires...
diff --git a/ext/wasm/api/sqlite3-api-glue.js b/ext/wasm/api/sqlite3-api-glue.js
index 86aa1d1813..6c1fcae820 100644
--- a/ext/wasm/api/sqlite3-api-glue.js
+++ b/ext/wasm/api/sqlite3-api-glue.js
@@ -69,6 +69,7 @@ self.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
     */
     const aPtr = wasm.xWrap.argAdapter('*');
     wasm.xWrap.argAdapter('sqlite3*', aPtr)
+    ('sqlite3_filename', aPtr)
     ('sqlite3_stmt*', aPtr)
     ('sqlite3_context*', aPtr)
     ('sqlite3_value*', aPtr)
diff --git a/ext/wasm/api/sqlite3-api-prologue.js b/ext/wasm/api/sqlite3-api-prologue.js
index 6d39581965..59cdab9295 100644
--- a/ext/wasm/api/sqlite3-api-prologue.js
+++ b/ext/wasm/api/sqlite3-api-prologue.js
@@ -913,9 +913,12 @@ self.sqlite3ApiBootstrap = function sqlite3ApiBootstrap(
     ["sqlite3_strlike", "int", "string","string","int"],
     ["sqlite3_trace_v2", "int", "sqlite3*", "int", "*", "*"],
     ["sqlite3_total_changes", "int", "sqlite3*"],
-    ["sqlite3_uri_boolean", "int", "string", "string", "int"],
-    ["sqlite3_uri_key", "string", "string", "int"],
-    ["sqlite3_uri_parameter", "string", "string", "string"],
+    /* Note sqlite3_uri_...() has very specific requirements
+       for their first C-string arguments, so we cannot perform
+       any type conversion on those. */
+    ["sqlite3_uri_boolean", "int", "sqlite3_filename", "string", "int"],
+    ["sqlite3_uri_key", "string", "sqlite3_filename", "int"],
+    ["sqlite3_uri_parameter", "string", "sqlite3_filename", "string"],
     ["sqlite3_user_data","void*", "sqlite3_context*"],
     ["sqlite3_value_blob", "*", "sqlite3_value*"],
     ["sqlite3_value_bytes","int", "sqlite3_value*"],
@@ -949,7 +952,7 @@ self.sqlite3ApiBootstrap = function sqlite3ApiBootstrap(
     ["sqlite3_realloc64", "*","*", "i64"],
     ["sqlite3_result_int64",undefined, "*", "i64"],
     ["sqlite3_total_changes64", "i64", ["sqlite3*"]],
-    ["sqlite3_uri_int64", "i64", ["string", "string", "i64"]],
+    ["sqlite3_uri_int64", "i64", ["sqlite3_filename", "string", "i64"]],
     ["sqlite3_value_int64","i64", "sqlite3_value*"],
   ];
 
@@ -1450,9 +1453,6 @@ self.sqlite3ApiBootstrap = function sqlite3ApiBootstrap(
       let lip = sqlite3ApiBootstrap.initializersAsync;
       delete sqlite3ApiBootstrap.initializersAsync;
       if(!lip || !lip.length) return Promise.resolve(sqlite3);
-      // Is it okay to resolve these in parallel or do we need them
-      // to resolve in order? We currently only have 1, so it
-      // makes no difference.
       lip = lip.map((f)=>{
         const p = (f instanceof Promise) ? f : f(sqlite3);
         return p.catch((e)=>{
@@ -1460,10 +1460,7 @@ self.sqlite3ApiBootstrap = function sqlite3ApiBootstrap(
           throw e;
         });
       });
-      //let p = lip.shift();
-      //while(lip.length) p = p.then(lip.shift());
-      //return p.then(()=>sqlite3);
-      return Promise.all(lip).then(()=>{
+      const postInit = ()=>{
         if(!sqlite3.__isUnderTest){
           /* Delete references to internal-only APIs which are used by
              some initializers. Retain them when running in test mode
@@ -1473,7 +1470,19 @@ self.sqlite3ApiBootstrap = function sqlite3ApiBootstrap(
           delete sqlite3.StructBinder;
         }
         return sqlite3;
-      });
+      };
+      if(1){
+        /* Run all initializers in sequence. The advantage is that it
+           allows us to have post-init cleanup defined outside of this
+           routine at the end of the list and have it run at a
+           well-defined time. */
+        let p = lip.shift();
+        while(lip.length) p = p.then(lip.shift());
+        return p.then(postInit);
+      }else{
+        /* Run them in an arbitrary order. */
+        return Promise.all(lip).then(postInit);
+      }
     },
     /**
        scriptInfo ideally gets injected into this object by the
diff --git a/ext/wasm/api/sqlite3-opfs-async-proxy.js b/ext/wasm/api/sqlite3-opfs-async-proxy.js
index da75f139c9..8bf34cc784 100644
--- a/ext/wasm/api/sqlite3-opfs-async-proxy.js
+++ b/ext/wasm/api/sqlite3-opfs-async-proxy.js
@@ -592,13 +592,12 @@ const installAsyncProxy = function(self){
           (opfsFlags & state.opfsFlags.OPFS_UNLOCK_ASAP)
           || state.opfsFlags.defaultUnlockAsap;
         if(0 /* this block is modelled after something wa-sqlite
-                does but it leads to immediate contention on journal files. */
+                does but it leads to immediate contention on journal files.
+                Update: this approach reportedly only works for DELETE journal
+                mode. */
            && (0===(flags & state.sq3Codes.SQLITE_OPEN_MAIN_DB))){
           /* sqlite does not lock these files, so go ahead and grab an OPFS
-             lock.
-
-             https://www.sqlite.org/uri.html
-          */
+             lock. */
           fh.xLock = "xOpen"/* Truthy value to keep entry from getting
                                flagged as auto-locked. String value so
                                that we can easily distinguish is later
diff --git a/ext/wasm/api/sqlite3-vfs-helper.js b/ext/wasm/api/sqlite3-vfs-helper.js
index 9a15dd85fd..f9d3c18c7b 100644
--- a/ext/wasm/api/sqlite3-vfs-helper.js
+++ b/ext/wasm/api/sqlite3-vfs-helper.js
@@ -183,25 +183,37 @@ self.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
      `methods`, (optional) `applyArgcCheck`) properties to
      this.installMethods().
 
-     If the `vfs` entry is set, its `struct` property is passed
-     to this.registerVfs(). The `vfs` entry may optionally have
-     an `asDefault` property, which gets passed as the 2nd
-     argument to registerVfs().
+     If the `vfs` entry is set then:
+
+     - Its `struct` property is passed to this.registerVfs(). The
+       `vfs` entry may optionally have an `asDefault` property, which
+       gets passed as the 2nd argument to registerVfs().
+
+     - If `struct.$zName` is falsy and the entry has a string-type
+       `name` property, `struct.$zName` is set to the C-string form of
+       that `name` value before registerVfs() is called.
 
      On success returns this object. Throws on error.
   */
   vh.installVfs = function(opt){
     let count = 0;
-    for(const key of ['io','vfs']){
+    const propList = ['io','vfs'];
+    for(const key of propList){
       const o = opt[key];
       if(o){
         ++count;
         this.installMethods(o.struct, o.methods, !!o.applyArgcCheck);
-        if('vfs'===key) this.registerVfs(o.struct, !!o.asDefault);
+        if('vfs'===key){
+          if(!o.struct.$zName && 'string'===typeof o.name){
+            o.struct.$zName = wasm.allocCString(o.name);
+            /* Note that we leak that C-string. */
+          }
+          this.registerVfs(o.struct, !!o.asDefault);
+        }
       }
     }
-    if(!count) toss("Misue: installVfs() options object requires at least",
-                    "one of 'io' or 'vfs' properties.");
+    if(!count) toss("Misuse: installVfs() options object requires at least",
+                    "one of:", propList);
     return this;
   };
   
diff --git a/ext/wasm/api/sqlite3-api-opfs.js b/ext/wasm/api/sqlite3-vfs-opfs.js
similarity index 99%
rename from ext/wasm/api/sqlite3-api-opfs.js
rename to ext/wasm/api/sqlite3-vfs-opfs.js
index 5eb3b22b37..7c7eed7efa 100644
--- a/ext/wasm/api/sqlite3-api-opfs.js
+++ b/ext/wasm/api/sqlite3-vfs-opfs.js
@@ -1266,7 +1266,7 @@ const installOpfsVfs = function callee(options){
                   opfsUtil.rootDirectory = d;
                   log("End of OPFS sqlite3_vfs setup.", opfsVfs);
                   promiseResolve(sqlite3);
-                });
+                }).catch(promiseReject);
               }else{
                 promiseResolve(sqlite3);
               }                
diff --git a/manifest b/manifest
index a615450fff..6bce7f15cc 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Refactor\sa\ssignificant\schunk\sof\sthe\sOPFS\ssqlite3_vfs\sinit\scode\sinto\ssqlite3.VfsHelper,\sand\sinternal-use-only\sAPI\sencapsulating\scode\srelevant\sto\screating\snew\sVFSes\sin\sJS.\sIntended\sto\sassist\sin\spending\sexperimentation\swith\san\salternative\sOPFS\sVFS.
-D 2022-11-30T05:27:36.071
+C Rename\ssome\sOPFS\sJS\sfiles.\sPrevent\sJS\sbindings\sof\ssqlite3_uri_...()\sfrom\sperforming\sJS-to-C-string\sargument\sconversion\son\stheir\sfirst\sargument,\sas\sdoing\sso\sis\sspecifically\sillegal.
+D 2022-11-30T07:17:29.596
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -491,26 +491,26 @@ F ext/userauth/sqlite3userauth.h 7f3ea8c4686db8e40b0a0e7a8e0b00fac13aa7a3
 F ext/userauth/user-auth.txt e6641021a9210364665fe625d067617d03f27b04
 F ext/userauth/userauth.c 7f00cded7dcaa5d47f54539b290a43d2e59f4b1eb5f447545fa865f002fc80cb
 F ext/wasm/EXPORTED_FUNCTIONS.fiddle.in 27450c8b8c70875a260aca55435ec927068b34cef801a96205adb81bdcefc65c
-F ext/wasm/GNUmakefile a1a94ff422be90c06263055aec4c569fe3e4ffb3e8cc7f954fd2739aefa52292
+F ext/wasm/GNUmakefile c6b88ce5f735e29bef2b5da2e095848a7919100521a45e645cbf2456d759d5dd
 F ext/wasm/README-dist.txt 2d670b426fc7c613b90a7d2f2b05b433088fe65181abead970980f0a4a75ea20
 F ext/wasm/README.md ef39861aa21632fdbca0bdd469f78f0096f6449a720f3f39642594af503030e9
 F ext/wasm/api/EXPORTED_FUNCTIONS.sqlite3-api b4d68c97d14944b48d55e06aa44f544a6f56a7fa2bcb6f9e030936a5b2a9479a
 F ext/wasm/api/EXPORTED_RUNTIME_METHODS.sqlite3-api 1ec3c73e7d66e95529c3c64ac3de2470b0e9e7fbf7a5b41261c367cf4f1b7287
-F ext/wasm/api/README.md 44d1ea63a990678e373f17ff4b08c2f8599e5a5754b7394e76f7e52164f307c0
+F ext/wasm/api/README.md 44a05899d607a792370260a7c9193c9c111a7df06bc3ad1823c92a159526dbf3
 F ext/wasm/api/extern-post-js.js 8923f76c3d2213159e12d641dc750523ead5c848185dc4996fae5cc12397f88d
 F ext/wasm/api/extern-pre-js.js cc61c09c7a24a07dbecb4c352453c3985170cec12b4e7e7e7a4d11d43c5c8f41
 F ext/wasm/api/post-js-footer.js cd0a8ec768501d9bd45d325ab0442037fb0e33d1f3b4f08902f15c34720ee4a1
 F ext/wasm/api/post-js-header.js d6ab3dfef4a06960d28a7eaa338d4e2a1a5981e9b38718168bbde8fdb2a439b8
 F ext/wasm/api/pre-js.js b88499dc303c21fc3f55f2c364a0f814f587b60a95784303881169f9e91c1d5f
 F ext/wasm/api/sqlite3-api-cleanup.js 6a22a3287b34a2b4b0f8127614242e8307cce31ac060eb705a89a6d04dcb1028
-F ext/wasm/api/sqlite3-api-glue.js 056f44b82c126358a0175e08a892d56fadfce177b0d7a0012502a6acf67ea6d5
+F ext/wasm/api/sqlite3-api-glue.js 03c40b65530d67bb2748b7380aea5fd1534500f812b76a6b401066dcd7fc4116
 F ext/wasm/api/sqlite3-api-oo1.js 06ad2079368e16cb9f182c18cd37bdc3932536856dff4f60582d0ca5f6c491a8
-F ext/wasm/api/sqlite3-api-opfs.js e36eec4535dab2da186c1fc743b8fb3a37b21a7c61425546d748a3038c25efab
-F ext/wasm/api/sqlite3-api-prologue.js 09fa4bf1e29596e599ead649003e01691419ffcb12d0f617152d577741973227
+F ext/wasm/api/sqlite3-api-prologue.js e1db3935e1deb1340c1dc0c0e4730b2b88254d616841ebd5bc6bb1b90b32657f
 F ext/wasm/api/sqlite3-api-worker1.js e94ba98e44afccfa482874cd9acb325883ade50ed1f9f9526beb9de1711f182f
 F ext/wasm/api/sqlite3-license-version-header.js a661182fc93fc2cf212dfd0b987f8e138a3ac98f850b1112e29b5fbdaecc87c3
-F ext/wasm/api/sqlite3-opfs-async-proxy.js 315582a4fe3b87ceaff69ad4a67d68a350b8014ac94d6a584d09ea922453c983
-F ext/wasm/api/sqlite3-vfs-helper.js 0b1de47e4407a414db1ee0ca3f9916ae74a9655fe1b1145d4a08e2b52f1ee25f
+F ext/wasm/api/sqlite3-opfs-async-proxy.js efb0a7142c64c6a0f4cfbb588e6ea5baac9941364dfb0d40de2a21af1815bed3
+F ext/wasm/api/sqlite3-vfs-helper.js 4ad4faf02e1524bf0296be8452c00b5708dce6faf649468d0377e26a0b299263
+F ext/wasm/api/sqlite3-vfs-opfs.js cb38965f0f0a52d22bddd3a40312dbdb7826bc90f1a5ce9692b7986cd05bdf43 w ext/wasm/api/sqlite3-api-opfs.js
 F ext/wasm/api/sqlite3-wasi.h 25356084cfe0d40458a902afb465df8c21fc4152c1d0a59b563a3fba59a068f9
 F ext/wasm/api/sqlite3-wasm.c 8b32787a3b6bb2990cbaba2304bd5b75a9652acbc8d29909b3279019b6cbaef5
 F ext/wasm/api/sqlite3-worker1-promiser.js 0c7a9826dbf82a5ed4e4f7bf7816e825a52aff253afbf3350431f5773faf0e4b
@@ -2065,8 +2065,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 7ce8608e221924d2c7067687eb6eef0f3cab181d5b4132e55a67d8514b6ce94b
-R 51f96a0acaea8419465c60238f6c368c
+P e25d7b080a807e35b32cb885ea75b384130e5c6e936dfef783c5b45d9bfe77d8
+R e53006d34fb1afaea0f4ce19d105453b
 U stephan
-Z aa663f409b5ddaba03a8fcd513053db4
+Z 3ad9d27606a854f1ad4ff4e5ecee27f6
 # Remove this line to create a well-formed Fossil manifest.
diff --git a/manifest.uuid b/manifest.uuid
index 4b90be6d7e..d65c6da223 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-e25d7b080a807e35b32cb885ea75b384130e5c6e936dfef783c5b45d9bfe77d8
\ No newline at end of file
+79832808de2cbdba140ed9e0558f1502b51d131ab4315265315922cda7b748cb
\ No newline at end of file