Add getRandomValues()

Closes #6

index.d.ts

@@ -65,3 +65,5 @@ export function randomFillSync<B extends ArrayBuffer | ArrayBufferView>(
 ): B
 
 export { CryptoError as errors }
+
+export * as webcrypto from './web'

index.js

@@ -101,3 +101,6 @@ exports.randomFill = function randomFill(buffer, offset, size, cb) {
 exports.randomFillSync = function randomFillSync(buffer, offset, size) {
   return exports.randomFill(buffer, offset, size)
 }
+
+// For Node.js compatibility
+exports.webcrypto = require('./web')

package.json

@@ -8,12 +8,18 @@
       "default": "./index.js"
     },
     "./package": "./package.json",
+    "./web": {
+      "types": "./web.d.ts",
+      "default": "./web.js"
+    },
     "./constants": "./lib/constants.js",
     "./errors": "./lib/errors.js"
   },
   "files": [
     "index.js",
     "index.d.ts",
+    "web.js",
+    "web.d.ts",
     "binding.c",
     "binding.js",
     "CMakeLists.txt",

web.d.ts

@@ -0,0 +1,3 @@
+export function getRandomValues<B extends ArrayBuffer | ArrayBufferView>(
+  array: B
+): B

web.js

@@ -0,0 +1,6 @@
+const crypto = require('.')
+
+// https://w3c.github.io/webcrypto/#Crypto-method-getRandomValues
+exports.getRandomValues = function getRandomValues(array) {
+  return crypto.randomFillSync(array)
+}