Inital build

frontend/node_modules/tus-js-client/lib.esm/node/fileSignature.js

@@ -0,0 +1,36 @@
+import { createHash } from 'crypto';
+import * as fs from 'fs';
+import * as path from 'path';
+
+/**
+ * Generate a fingerprint for a file which will be used the store the endpoint
+ *
+ * @param {File} file
+ * @param {Object} options
+ */
+export default function fingerprint(file, options) {
+  if (Buffer.isBuffer(file)) {
+    // create MD5 hash for buffer type
+    var blockSize = 64 * 1024; // 64kb
+    var content = file.slice(0, Math.min(blockSize, file.length));
+    var hash = createHash('md5').update(content).digest('hex');
+    var ret = ['node-buffer', hash, file.length, options.endpoint].join('-');
+    return Promise.resolve(ret);
+  }
+  if (file instanceof fs.ReadStream && file.path != null) {
+    return new Promise(function (resolve, reject) {
+      var name = path.resolve(file.path);
+      fs.stat(file.path, function (err, info) {
+        if (err) {
+          reject(err);
+          return;
+        }
+        var ret = ['node-file', name, info.size, info.mtime.getTime(), options.endpoint].join('-');
+        resolve(ret);
+      });
+    });
+  }
+
+  // fingerprint cannot be computed for file input type
+  return Promise.resolve(null);
+}