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node_modules/base64-arraybuffer/LICENSE-MIT

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+Copyright (c) 2012 Niklas von Hertzen
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation
+files (the "Software"), to deal in the Software without
+restriction, including without limitation the rights to use,
+copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.

node_modules/base64-arraybuffer/index.d.ts

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+declare module 'base64-arraybuffer' {
+    export function encode(buffer: ArrayBuffer): string;
+    export function decode(str: string): ArrayBuffer;
+}

node_modules/base64-arraybuffer/lib/base64-arraybuffer.js

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+/*
+ * base64-arraybuffer
+ * https://github.com/niklasvh/base64-arraybuffer
+ *
+ * Copyright (c) 2012 Niklas von Hertzen
+ * Licensed under the MIT license.
+ */
+(function(){
+  "use strict";
+
+  var chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+  // Use a lookup table to find the index.
+  var lookup = new Uint8Array(256);
+  for (var i = 0; i < chars.length; i++) {
+    lookup[chars.charCodeAt(i)] = i;
+  }
+
+  exports.encode = function(arraybuffer) {
+    var bytes = new Uint8Array(arraybuffer),
+    i, len = bytes.length, base64 = "";
+
+    for (i = 0; i < len; i+=3) {
+      base64 += chars[bytes[i] >> 2];
+      base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)];
+      base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)];
+      base64 += chars[bytes[i + 2] & 63];
+    }
+
+    if ((len % 3) === 2) {
+      base64 = base64.substring(0, base64.length - 1) + "=";
+    } else if (len % 3 === 1) {
+      base64 = base64.substring(0, base64.length - 2) + "==";
+    }
+
+    return base64;
+  };
+
+  exports.decode =  function(base64) {
+    var bufferLength = base64.length * 0.75,
+    len = base64.length, i, p = 0,
+    encoded1, encoded2, encoded3, encoded4;
+
+    if (base64[base64.length - 1] === "=") {
+      bufferLength--;
+      if (base64[base64.length - 2] === "=") {
+        bufferLength--;
+      }
+    }
+
+    var arraybuffer = new ArrayBuffer(bufferLength),
+    bytes = new Uint8Array(arraybuffer);
+
+    for (i = 0; i < len; i+=4) {
+      encoded1 = lookup[base64.charCodeAt(i)];
+      encoded2 = lookup[base64.charCodeAt(i+1)];
+      encoded3 = lookup[base64.charCodeAt(i+2)];
+      encoded4 = lookup[base64.charCodeAt(i+3)];
+
+      bytes[p++] = (encoded1 << 2) | (encoded2 >> 4);
+      bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2);
+      bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63);
+    }
+
+    return arraybuffer;
+  };
+})();

node_modules/base64-arraybuffer/package.json

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+{
+  "name": "base64-arraybuffer",
+  "description": "Encode/decode base64 data into ArrayBuffers",
+  "version": "0.2.0",
+  "homepage": "https://github.com/niklasvh/base64-arraybuffer",
+  "author": {
+    "name": "Niklas von Hertzen",
+    "email": "niklasvh@gmail.com",
+    "url": "https://hertzen.com"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/niklasvh/base64-arraybuffer"
+  },
+  "bugs": {
+    "url": "https://github.com/niklasvh/base64-arraybuffer/issues"
+  },
+  "licenses": [
+    {
+      "type": "MIT",
+      "url": "https://github.com/niklasvh/base64-arraybuffer/blob/master/LICENSE-MIT"
+    }
+  ],
+  "main": "lib/base64-arraybuffer",
+  "engines": {
+    "node": ">= 0.6.0"
+  },
+  "scripts": {
+    "test": "mocha test"
+  },
+  "devDependencies": {
+    "mocha": "^6.1.4"
+  },
+  "keywords": []
+}