feat(browser): add browser build, tests, and sample sha256 library method

src/adapters/crypto.browser.ts

@@ -0,0 +1,8 @@
+// Must first be built by browserify.
+// https://github.com/rollup/rollup-plugin-commonjs/issues/105#issuecomment-281917166
+import hash from 'hash.js'
+
+export function createHash (algorithm: 'sha256') {
+  console.log(hash)
+  return hash.sha256()
+}

src/index.spec.ts

@@ -1,8 +0,0 @@
-import { test } from 'ava'
-import * as lib from './'
-
-test('functions can be used without es imports', (t) => {
-  t.true(typeof lib.double === 'function')
-  t.true(typeof lib.power === 'function')
-  t.true(typeof lib.asyncABC === 'function')
-})

src/index.ts

@@ -1,2 +1,3 @@
-export * from './lib/numberOps'
-export * from './lib/asyncOps'
+export * from './lib/async'
+export * from './lib/hash'
+export * from './lib/number'

src/lib/async.spec.ts

@@ -1,5 +1,5 @@
 import { test } from 'ava'
-import { asyncABC } from '../'
+import { asyncABC } from 'typescript-starter'
 
 test('getABC', async t => {
   t.deepEqual(await asyncABC(), ['a','b', 'c'])

src/lib/hash.spec.ts

@@ -0,0 +1,6 @@
+import { test } from 'ava'
+import { sha256 } from 'typescript-starter'
+
+test('sha256', t => {
+  t.deepEqual(sha256('test'), '9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08')
+})

src/lib/hash.ts

@@ -0,0 +1,17 @@
+import { createHash } from 'crypto'
+
+/**
+ * Calculate the sha256 digest of a string. On Node.js, this will use the native module, in the browser, it will fall back to a pure javascript implementation.
+ *
+ * ### Example (es imports)
+ * ```js
+ * import { sha256 } from 'typescript-starter'
+ * sha256('test')
+ * // => '9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08'
+ * ```
+ *
+ * @returns sha256 message digest
+ */
+export function sha256 (message: string) {
+  return createHash('sha256').update(message).digest('hex')
+}

src/lib/number.spec.ts

@@ -1,5 +1,5 @@
 import { test } from 'ava'
-import { double, power } from '../'
+import { double, power } from 'typescript-starter'
 
 test('double', t => {
   t.deepEqual(double(2), 4)