atom: handle truncated bytes in fromCord

package.json

@@ -1,21 +1,28 @@
 {
   "name": "@urbit/nockjs",
-  "version": "1.4.0-dev1",
+  "version": "1.4.0-dev2",
   "description": "Javascript urbit runtime",
   "main": "dist/index.js",
+  "module": "dist/nockjs.esm.mjs",
   "types": "dist/index.d.ts",
-  "type": "module",
-  "module": "dist/nockjs.esm.js",
   "exports": {
-    "require": "./dist/index.js",
-    "import": "./dist/nockjs.esm.js"
+    ".": {
+      "require": {
+        "types": "./dist/index.d.ts",
+        "default": "./dist/index.js"
+      },
+      "import": {
+        "types": "./dist/index.d.mts",
+        "default": "./dist/nockjs.esm.mjs"
+      }
+    }
   },
   "files": [
     "dist/**"
   ],
   "scripts": {
     "start": "dts watch",
-    "build": "dts build",
+    "build": "dts build && cp dist/index.d.ts dist/index.d.mts && cp dist/nockjs.esm.js dist/nockjs.esm.mjs",
     "test": "dts test",
     "prepare": "npm run build"
   },
@@ -40,7 +47,7 @@
   "homepage": "https://github.com/urbit/nockjs#readme",
   "devDependencies": {
     "@types/jest": "^29.5.1",
-    "dts-cli": "^2.0.3",
+    "dts-cli": "^2.0.5",
     "jest": "^29.5.0",
     "typescript": "^5.0.4"
   },

src/index.test.ts

@@ -1,6 +1,6 @@
 import { jam, cue, cue_bytes, bigintToDataView, bi_cut } from "./serial";
 import bits from "./bits";
-import { dwim } from "./noun-helpers";
+import { dwim, enjs } from "./noun-helpers";
 import { Atom, Cell, Noun } from "./noun";
 import compiler from "./compiler";
 import { bigIntFromStringWithRadix } from "./bigint";
@@ -250,3 +250,15 @@ test("decrement", () => {
   const product = context.nock(dwim(0), formula);
   expect(product.equals(dwim(42))).toBeTruthy();
 });
+
+test('dwim <-> enjs.cord', () => {
+  const str = `=/  m  (strand ,vase)
+;<  [=ship =desk =case]  bind:m  get-beak
+;<  ~  bind:m
+(poke-our %hood %kiln-merge !>([%example ship %base case %auto]))
+(pure:m !>('success'))`;
+  const atom = dwim(str);
+  const cord = enjs.cord(atom);
+
+  expect(cord).toEqual(str);
+})

src/noun.ts

@@ -196,7 +196,8 @@ class Atom {
       j,
       octs = Array(str.length);
     for (i = 0, j = octs.length - 1; i < octs.length; ++i, --j) {
-      octs[j] = (str.charCodeAt(i) & 0xff).toString(16);
+      const charByte = (str.charCodeAt(i) & 0xff).toString(16);
+      octs[j] = charByte.length === 1 ? "0" + charByte : charByte;
     }
     if (str.length > 4)  return Atom.fromString(octs.join(''), 16);
     else                 return new Atom(BigInt(parseInt(octs.join(""), 16)));