Initial commit

sources/src/wrapper-validation/hash.ts

@@ -0,0 +1,18 @@
+import * as crypto from 'crypto'
+import * as fs from 'fs'
+
+export async function sha256File(path: string): Promise<string> {
+    return new Promise((resolve, reject) => {
+        const hash = crypto.createHash('sha256')
+        const stream = fs.createReadStream(path)
+        stream.on('data', data => hash.update(data))
+        stream.on('end', () => {
+            stream.destroy()
+            resolve(hash.digest('hex'))
+        })
+        stream.on('error', error => {
+            stream.destroy()
+            reject(error)
+        })
+    })
+}