diff --git a/packages/core/core-wasm/pkg/core_wasm.d.ts b/packages/core/core-wasm/pkg/core_wasm.d.ts
index 065801c..48c9062 100644
--- a/packages/core/core-wasm/pkg/core_wasm.d.ts
+++ b/packages/core/core-wasm/pkg/core_wasm.d.ts
@@ -254,16 +254,6 @@ export interface InitOutput {
     readonly server_on_error: (a: number, b: any) => any;
     readonly server_sign_in: (a: number, b: number, c: number, d: number, e: number, f: number, g: number, h: number, i: number) => any;
     readonly server_sign_in_anonymous: (a: number, b: number, c: number, d: number, e: number, f: number, g: number) => any;
-    readonly wasm_bindgen__convert__closures_____invoke__h329e9bd1f6ebd81c: (a: number, b: number, c: any) => [number, number];
-    readonly wasm_bindgen__convert__closures_____invoke__hc618b3d57c150041: (a: number, b: number, c: any) => [number, number];
-    readonly wasm_bindgen__convert__closures_____invoke__h40e10e1132bc43bd: (a: number, b: number, c: any, d: any) => void;
-    readonly wasm_bindgen__convert__closures_____invoke__h17c8cfd1267240e9: (a: number, b: number, c: any) => void;
-    readonly wasm_bindgen__convert__closures_____invoke__h38a7baa7ae265ab7: (a: number, b: number, c: any) => void;
-    readonly wasm_bindgen__convert__closures_____invoke__h17c8cfd1267240e9_3: (a: number, b: number, c: any) => void;
-    readonly wasm_bindgen__convert__closures_____invoke__h17c8cfd1267240e9_5: (a: number, b: number, c: any) => void;
-    readonly wasm_bindgen__convert__closures_____invoke__h54442ea4986df817: (a: number, b: number) => void;
-    readonly wasm_bindgen__convert__closures_____invoke__h825215c0288dbb8b: (a: number, b: number) => void;
-    readonly wasm_bindgen__convert__closures_____invoke__h94dacc021d8dd016: (a: number, b: number) => void;
     readonly __wbindgen_malloc: (a: number, b: number) => number;
     readonly __wbindgen_realloc: (a: number, b: number, c: number, d: number) => number;
     readonly __wbindgen_exn_store: (a: number) => void;
diff --git a/packages/core/core-wasm/postbuild.js b/packages/core/core-wasm/postbuild.js
new file mode 100644
index 0000000..d314cda
--- /dev/null
+++ b/packages/core/core-wasm/postbuild.js
@@ -0,0 +1,14 @@
+import fs from "node:fs"
+import path from "node:path"
+
+const pkg = path.join(import.meta.dirname, "pkg")
+
+fs.rmSync(path.join(pkg, ".gitignore"))
+
+// The closure shims in InitOutput are named after mangled Rust symbols, so they
+// change with the toolchain even when the API doesn't. Nothing in TS calls them,
+// and dropping them keeps the committed d.ts the same on every machine.
+const dts = path.join(pkg, "core_wasm.d.ts")
+const source = fs.readFileSync(dts, "utf8")
+
+fs.writeFileSync(dts, source.replace(/^ *readonly \w*convert__closures\w*: .*\n/gm, ""))
diff --git a/packages/core/core-wasm/rm-generated-gitignore.js b/packages/core/core-wasm/rm-generated-gitignore.js
deleted file mode 100644
index e3fa186..0000000
--- a/packages/core/core-wasm/rm-generated-gitignore.js
+++ /dev/null
@@ -1,4 +0,0 @@
-import fs from "node:fs"
-import path from "node:path"
-
-fs.rmSync(path.join(import.meta.dirname, "./pkg/.gitignore"))
diff --git a/packages/core/package.json b/packages/core/package.json
index 7543e6e..4f8535c 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -18,7 +18,7 @@
     }
   },
   "scripts": {
-    "build": "wasm-pack build core-wasm --target web && node ./core-wasm/rm-generated-gitignore.js",
-    "dev": "cargo watch -i core-wasm/pkg -s 'wasm-pack build core-wasm --target web'"
+    "build": "wasm-pack build core-wasm --target web && node ./core-wasm/postbuild.js",
+    "dev": "cargo watch -i core-wasm/pkg -s 'wasm-pack build core-wasm --target web && node ./core-wasm/postbuild.js'"
   }
 }