scripts: add wasm_exec.js generator

Makefile

@@ -1,5 +1,8 @@
 SHELL := /bin/bash
 
+GO_VERSION ?= 1.26.2
+TINYGO_VERSION ?= 0.41.1
+
 .PHONY: test
 test:
 	@PATH=$(CURDIR)/misc/wasm:$$PATH GOOS=js GOARCH=wasm go test ./...
@@ -12,3 +15,7 @@ build-examples:
 		cd $$dir && GOOS=js GOARCH=wasm go build -o ./build/app.wasm; \
 		cd ../../; \
 	done
+
+.PHONY: gen-wasm-exec
+gen-wasm-exec:
+	cd scripts/gen-wasm-exec && pnpm run gen --go $(GO_VERSION) --tinygo $(TINYGO_VERSION)

cmd/workers-assets-gen/assets/wasm_exec_go.js

@@ -580,4 +580,4 @@
 			};
 		}
 	}
-})();
+})();

cmd/workers-assets-gen/assets/wasm_exec_tinygo.js

@@ -488,7 +488,7 @@
 					if (prop === 'context') {
 						return context;
 					}
-					return Reflect.get(...arguments);
+					return Reflect.get(target, prop, target);
 				}
 			})
 			this._values = [ // JS values that Go currently has references to, indexed by reference id
@@ -550,6 +550,7 @@
 			};
 		}
 	}
+
 	/*
 	if (
 		global.require &&

scripts/gen-wasm-exec/.gitignore

@@ -0,0 +1 @@
+node_modules/

scripts/gen-wasm-exec/package.json

@@ -0,0 +1,20 @@
+{
+  "name": "gen-wasm-exec",
+  "version": "0.0.0",
+  "private": true,
+  "type": "module",
+  "engines": {
+    "node": ">=24.0.0"
+  },
+  "scripts": {
+    "gen": "node src/index.ts",
+    "typecheck": "tsc --noEmit"
+  },
+  "packageManager": "pnpm@11.0.4",
+  "devDependencies": {
+    "@types/jscodeshift": "^17.3.0",
+    "@types/node": "^25.6.0",
+    "jscodeshift": "^17.3.0",
+    "typescript": "^6.0.3"
+  }
+}