Fix macro-railroad build

Author: Folyd

Makefile

@@ -12,4 +12,4 @@ manage:
 	@cd manage && cargo run
 
 # Build macro-railroad wasm module and js
-macro-railroad: extension/script/macro-railroad-wasm.js extension/wasm/macro-railroad.wasm
+macro-railroad: extension/wasm/macro-railroad.wasm extension/script/macro-railroad-wasm.js

build.mk

@@ -4,5 +4,8 @@ extension/script/macro-railroad-wasm.js: macro-railroad/pkg/macro-railroad.js
 extension/wasm/macro-railroad.wasm: macro-railroad/pkg/macro-railroad.wasm
 	cp $< $@
 
-macro-railroad/pkg/macro-railroad.wasm: macro-railroad/Cargo.lock macro-railroad/Cargo.toml macro-railroad/build.rs macro-railroad/src/lib.rs
-	cd macro-railroad && wasm-pack build -t no-modules --out-name macro-railroad && mv pkg/macro-railroad_bg.wasm pkg/macro-railroad.wasm
+macro-railroad/pkg:
+	mkdir $@
+
+macro-railroad/pkg/macro-railroad.wasm: macro-railroad/Cargo.lock macro-railroad/Cargo.toml macro-railroad/build.rs macro-railroad/src/lib.rs | macro-railroad/pkg
+	cd macro-railroad && wasm-pack build -t no-modules --no-typescript --out-name macro-railroad && cp pkg/macro-railroad_bg.wasm pkg/macro-railroad.wasm