feat(binary): add byte conversions

packages/binary/src/bytes.ts

@@ -0,0 +1,20 @@
+export const bytes16 = (x: number, le = false) => {
+    const b0 = x & 0xff;
+    const b1 = (x >> 8) & 0xff;
+    return le ? [b0, b1] : [b1, b0];
+};
+
+export const bytes24 = (x: number, le = false) => {
+    const b0 = x & 0xff;
+    const b1 = (x >> 8) & 0xff;
+    const b2 = (x >> 16) & 0xff;
+    return le ? [b0, b1, b2] : [b2, b1, b0];
+};
+
+export const bytes32 = (x: number, le = false) => {
+    const b0 = x & 0xff;
+    const b1 = (x >> 8) & 0xff;
+    const b2 = (x >> 16) & 0xff;
+    const b3 = (x >> 24) & 0xff;
+    return le ? [b0, b1, b2, b3] : [b3, b2, b1, b0];
+};

packages/binary/src/index.ts

@@ -1,5 +1,6 @@
 export * from "./api";
 export * from "./align";
+export * from "./bytes";
 export * from "./count";
 export * from "./edit";
 export * from "./float";