♻️ inline WASM binary into generated TypeScript module

Replace runtime filesystem read of clayterm.wasm with a build step
that base64-encodes the binary into wasm.ts. This removes the
node:fs/promises dependency and --allow-read requirement for the
WASM file.

Author: cowboyd

.gitignore

@@ -1,4 +1,5 @@
 /.agent-shell/
 /clayterm.wasm
+/wasm.ts
 /build/
 /node_modules/

Makefile

@@ -13,15 +13,18 @@ LDFLAGS = -Wl,--no-entry \
           -Wl,--undefined=Clay__MeasureText \
           -Wl,--undefined=Clay__QueryScrollOffset
 
-all: $(TARGET)
+all: $(TARGET) wasm.ts
 	@echo "Built $(TARGET) ($$(wc -c < $(TARGET)) bytes)"
 
 DEPS = $(wildcard src/*.c src/*.h)
 
 $(TARGET): $(DEPS)
 	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(SRC)
 
+wasm.ts: $(TARGET)
+	deno run --allow-read --allow-write tasks/bundle-wasm.ts
+
 clean:
-	rm -f $(TARGET)
+	rm -f $(TARGET) wasm.ts
 
 .PHONY: all clean

deno.json

@@ -2,26 +2,28 @@
   "name": "@clayterm/clayterm",
   "license": "MIT",
   "tasks": {
-    "test": "deno test --allow-read",
+    "test": "deno test",
     "fmt": "deno fmt && clang-format -i src/*.c src/*.h",
     "fmt:check": "deno fmt --check && clang-format --dry-run --Werror src/*.c src/*.h",
     "build:npm": "deno run -A tasks/build-npm.ts",
     "build:jsr": "deno run -A tasks/build-jsr.ts",
-    "demo": "deno run -A demo/keyboard.ts"
+    "demo": "deno run demo/keyboard.ts"
   },
   "imports": {
     "@std/testing": "jsr:@std/testing@1",
     "@std/expect": "jsr:@std/expect@1",
     "@sinclair/typebox": "npm:@sinclair/typebox@^0.34",
     "dnt": "jsr:@deno/dnt@0.42.3",
-    "effection": "npm:effection@^4.0.2"
+    "effection": "npm:effection@^4.0.2",
+    "@std/encoding": "jsr:@std/encoding@1"
   },
   "exports": {
     ".": "./mod.ts",
     "./validate": "./validate.ts"
   },
   "publish": {
-    "include": ["*.ts", "clayterm.wasm"]
+    "include": ["*.ts"],
+    "exclude": ["!wasm.ts"]
   },
   "fmt": {
     "exclude": ["clay", "build"]

deno.lock

@@ -44,4 +44,3 @@ await build({
 });
 
 await Deno.copyFile("README.md", `${outDir}/README.md`);
-await Deno.copyFile("clayterm.wasm", `${outDir}/esm/clayterm.wasm`);

tasks/build-npm.ts

@@ -0,0 +1,13 @@
+import { encodeBase64 } from "@std/encoding/base64";
+
+const wasm = await Deno.readFile("clayterm.wasm");
+const base64 = encodeBase64(wasm);
+
+const source = `const bin = atob("${base64}");
+const bytes = new Uint8Array(bin.length);
+for (let i = 0; i < bin.length; i++) bytes[i] = bin.charCodeAt(i);
+export const compiled = await WebAssembly.compile(bytes);
+`;
+
+await Deno.writeTextFile("wasm.ts", source);
+console.log(`wrote wasm.ts (${wasm.length} bytes encoded)`);