Support native runtime values used by OpenTUI

- Add shared ArrayBuffer storage and native Unicode grapheme segmentation.
- Preserve builtin modules, globals, and byte views across JavaScript bindings.
- Compile package initialization expressions and optional native callables.

tests/diagnostics/dataview.ts

@@ -1,14 +1,6 @@
-// The DataView fences: `.buffer` escaping the one composed position that
-// consumes it and a constructor
-// over something that isn't a typed array's `.buffer`.
-
-const buf = new Uint8Array(8);
-const view = new DataView(buf.buffer);
-
-// '.buffer' only compiles inside new DataView(x.buffer, ...).
-const escaped = buf.buffer;
-
-// The constructor wants a typed array's own '.buffer'.
-const ab = new ArrayBuffer(8);
-const direct = new DataView(ab);
-void view;
+// Stored ArrayBuffers and DataViews lower; Float16 accessors remain unsupported.
+const buffer = new ArrayBuffer(16);
+const view = new DataView(buffer);
+view.setFloat16(0, 1.5);
+console.log(view.getFloat16(0));
+// End of the diagnostic fixture.

tests/diagnostics/expressions.ts

@@ -1,9 +0,0 @@
-const n: number = 3;
-const t = n > 0 ? "pos" : "neg";
-const o = { ...{ a: 1 } };
-const b = "a" in { a: 1 };
-const m = typeof "ab".indexOf("b"); // a CALL operand — pure computations fold now
-const u = n === 3 ? 1 : 2;
-const s: string = "abc";
-const mixed = n === 3 && s;
-console.log(t, m, u, b, mixed);

tests/diagnostics/intl-segmenter.ts

@@ -0,0 +1,5 @@
+// The native implementation covers default Unicode grapheme segmentation.
+new Intl.Segmenter("en-US");
+new Intl.Segmenter(undefined, { granularity: "word" });
+new Intl.Segmenter(undefined, { granularity: "sentence" });
+// End of the diagnostic fixture.