Bump

README.md

@@ -53,7 +53,7 @@ const uint8Array3 = decodeL(l)  // Uint8Array [ 3, 192 ]
 Load this file in the browser to gain access to a `base1` global.
 
 ```html
-<script src="https://unpkg.com/base1" crossorigin></script>
+<script src="https://unpkg.com/base1@1/dist/iife/base1.js" crossorigin></script>
 <script>
   console.log(base1.decode('AAAAAAAAAAAAAAAAAAAAAAAAAA'))
 </script>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "base1",
-  "version": "1.0.1",
+  "version": "1.0.3",
   "description": "Convert binary data to Base1",
   "homepage": "https://github.com/qntm/base1",
   "repository": {
@@ -9,7 +9,6 @@
   },
   "module": "dist/es6/base1.js",
   "main": "dist/cjs/base1.js",
-  "browser": "dist/iife/base1.js",
   "keywords": [
     "base64",
     "base1",

src/index.js

@@ -23,11 +23,15 @@ export const encode = uint8Array => {
 }
 
 export const decodeL = l => {
+  if (typeof l !== 'bigint' || l < 0n) {
+    throw Error('This is not a non-negative BigInt')
+  }
+
   const bytes = []
   while (l > 0n) {
     l -= 1n
     bytes.push(Number(l % 256n))
-    l /= 256n
+    l /= 256n // rounds down
   }
 
   bytes.reverse()

test/test.js

@@ -39,6 +39,11 @@ describe('base1', () => {
     })
 
     describe('decodeL', () => {
+      it('wants a non-negative BigInt', () => {
+        expect(() => decodeL(8)).toThrowError('This is not a non-negative BigInt')
+        expect(() => decodeL(-1n)).toThrowError('This is not a non-negative BigInt')
+      })
+
       it('works', () => {
         expect(decodeL(0n)).toEqual(Uint8Array.from([]))
         expect(decodeL(1n)).toEqual(Uint8Array.from([0]))