Remove jit.literal and handle literal embedding automatically

deno.json

@@ -1,5 +1,5 @@
 {
   "name": "@luaneko/lstd",
-  "version": "0.1.6",
+  "version": "0.2.0",
   "exports": "./mod.ts"
 }

jit.ts

@@ -18,6 +18,21 @@ export class JitCompiler {
   }
 
   enclose(x: unknown) {
+    switch (typeof x) {
+      case "boolean":
+      case "number":
+        return this.write(`${x}`);
+      case "bigint":
+        return this.write(`${x}n`);
+      case "string":
+        return this.write(JSON.stringify(x));
+      case "object":
+        if (x === null) return this.write(`null`);
+        break;
+      case "undefined":
+        return this.write(`undefined`);
+    }
+
     let name = this.#args.get(x);
     if (!name) this.#args.set(x, (name = `__x${this.#args.size}`));
     this.write(name);
@@ -52,7 +67,6 @@ export function jit(
 jit.compiled = compiled;
 jit.raw = raw;
 jit.fragment = fragment;
-jit.literal = literal;
 jit.map = map;
 jit.if = condition;
 
@@ -92,10 +106,6 @@ export function fragment(
   };
 }
 
-export function literal(x: unknown) {
-  return raw(typeof x === "undefined" ? "undefined" : JSON.stringify(x));
-}
-
 export function map<T>(
   sep: string | JitFragment,
   xs: Iterable<T>,