From 291803c31f829fe0d32bb3207bc11def95a7408c Mon Sep 17 00:00:00 2001
From: Nevena Bojovic <nenabojov@gmail.com>
Date: Tue, 1 Mar 2022 20:05:50 +0100
Subject: Urađena test aplikacija. Povezan front i back.
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Front/node_modules/ssri/CHANGELOG.md           | 355 ++++++++++++++
 .../Front/node_modules/ssri/LICENSE.md             |  16 +
 .../Front/node_modules/ssri/README.md              | 528 +++++++++++++++++++++
 .../testAppNevena/Front/node_modules/ssri/index.js | 470 ++++++++++++++++++
 .../Front/node_modules/ssri/package.json           |  52 ++
 5 files changed, 1421 insertions(+)
 create mode 100644 sandbox/testAppNevena/Front/node_modules/ssri/CHANGELOG.md
 create mode 100644 sandbox/testAppNevena/Front/node_modules/ssri/LICENSE.md
 create mode 100644 sandbox/testAppNevena/Front/node_modules/ssri/README.md
 create mode 100644 sandbox/testAppNevena/Front/node_modules/ssri/index.js
 create mode 100644 sandbox/testAppNevena/Front/node_modules/ssri/package.json

(limited to 'sandbox/testAppNevena/Front/node_modules/ssri')

diff --git a/sandbox/testAppNevena/Front/node_modules/ssri/CHANGELOG.md b/sandbox/testAppNevena/Front/node_modules/ssri/CHANGELOG.md
new file mode 100644
index 00000000..3fea458e
--- /dev/null
+++ b/sandbox/testAppNevena/Front/node_modules/ssri/CHANGELOG.md
@@ -0,0 +1,355 @@
+# Changelog
+
+All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
+
+### [8.0.1](https://github.com/npm/ssri/compare/v8.0.0...v8.0.1) (2021-01-27)
+
+
+### Bug Fixes
+
+* simplify regex for strict mode, add tests ([76e2233](https://github.com/npm/ssri/commit/76e223317d971f19e4db8191865bdad5edee40d2))
+
+## [8.0.0](https://github.com/npm/ssri/compare/v7.1.0...v8.0.0) (2020-02-18)
+
+
+### ⚠ BREAKING CHANGES
+
+* SRI values with `../` in the algorithm name now throw
+as invalid (which they always probably should have!)
+* adds a new error that will be thrown.  Empty SRIs are
+no longer considered valid for checking, only when using integrityStream
+to calculate the SRI value.
+
+PR-URL: https://github.com/npm/ssri/pull/12
+Credit: @claudiahdz
+
+### Features
+
+* remove figgy-pudding ([0e78fd7](https://github.com/npm/ssri/commit/0e78fd7b754e2d098875eb4c57238709d96d7c27))
+
+
+### Bug Fixes
+
+* harden SRI parsing against ../ funny business ([4062735](https://github.com/npm/ssri/commit/4062735d1281941fd32ac4320b9f9965fcec278b))
+* IntegrityStream responds to mutating opts object mid-stream ([4a963e5](https://github.com/npm/ssri/commit/4a963e5982478c6b07f86848cdb72d142c765195))
+* throw null when sri is empty or bad ([a6811cb](https://github.com/npm/ssri/commit/a6811cba71e20ea1fdefa6e50c9ea3c67efc2500)), closes [#12](https://github.com/npm/ssri/issues/12)
+
+## [7.1.0](https://github.com/npm/ssri/compare/v7.0.1...v7.1.0) (2019-10-24)
+
+
+### Bug Fixes
+
+* Do not blow up if the opts object is mutated ([806e8c8](https://github.com/npm/ssri/commit/806e8c8))
+
+
+### Features
+
+* Add Integrity#merge method ([0572c1d](https://github.com/npm/ssri/commit/0572c1d)), closes [#4](https://github.com/npm/ssri/issues/4)
+
+### [7.0.1](https://github.com/npm/ssri/compare/v7.0.0...v7.0.1) (2019-09-30)
+
+## [7.0.0](https://github.com/npm/ssri/compare/v6.0.1...v7.0.0) (2019-09-18)
+
+
+### ⚠ BREAKING CHANGES
+
+* ssri no longer accepts a Promise option, and does not
+use, return, or rely on Bluebird promises.
+* drop support for Node.js v6.
+
+We knew this was coming, and the Stream changes are breaking anyway.
+May as well do this now.
+* **streams:** this replaces the Node.js stream with a Minipass
+stream.  See http://npm.im/minipass for documentation.
+
+### Bug Fixes
+
+* return super.write() return value ([55b055d](https://github.com/npm/ssri/commit/55b055d))
+
+
+* Use native promises only ([6d13165](https://github.com/npm/ssri/commit/6d13165))
+* update tap, standard, standard-version, travis ([2e54956](https://github.com/npm/ssri/commit/2e54956))
+* **streams:** replace transform streams with minipass ([363995e](https://github.com/npm/ssri/commit/363995e))
+
+<a name="6.0.1"></a>
+## [6.0.1](https://github.com/npm/ssri/compare/v6.0.0...v6.0.1) (2018-08-27)
+
+
+### Bug Fixes
+
+* **opts:** use figgy-pudding to specify consumed opts ([cf86553](https://github.com/npm/ssri/commit/cf86553))
+
+
+
+<a name="6.0.0"></a>
+# [6.0.0](https://github.com/npm/ssri/compare/v5.3.0...v6.0.0) (2018-04-09)
+
+
+### Bug Fixes
+
+* **docs:** minor typo ([b71ef17](https://github.com/npm/ssri/commit/b71ef17))
+
+
+### meta
+
+* drop support for node@4 ([d9bf359](https://github.com/npm/ssri/commit/d9bf359))
+
+
+### BREAKING CHANGES
+
+* node@4 is no longer supported
+
+
+
+<a name="5.3.0"></a>
+# [5.3.0](https://github.com/npm/ssri/compare/v5.2.4...v5.3.0) (2018-03-13)
+
+
+### Features
+
+* **checkData:** optionally throw when checkData fails ([bf26b84](https://github.com/npm/ssri/commit/bf26b84))
+
+
+
+<a name="5.2.4"></a>
+## [5.2.4](https://github.com/npm/ssri/compare/v5.2.3...v5.2.4) (2018-02-16)
+
+
+
+<a name="5.2.3"></a>
+## [5.2.3](https://github.com/npm/ssri/compare/v5.2.2...v5.2.3) (2018-02-16)
+
+
+### Bug Fixes
+
+* **hashes:** filter hash priority list by available hashes ([2fa30b8](https://github.com/npm/ssri/commit/2fa30b8))
+* **integrityStream:** dedupe algorithms to generate ([d56c654](https://github.com/npm/ssri/commit/d56c654))
+
+
+
+<a name="5.2.2"></a>
+## [5.2.2](https://github.com/npm/ssri/compare/v5.2.1...v5.2.2) (2018-02-14)
+
+
+### Bug Fixes
+
+* **security:** tweak strict SRI regex ([#10](https://github.com/npm/ssri/issues/10)) ([d0ebcdc](https://github.com/npm/ssri/commit/d0ebcdc))
+
+
+
+<a name="5.2.1"></a>
+## [5.2.1](https://github.com/npm/ssri/compare/v5.2.0...v5.2.1) (2018-02-06)
+
+
+
+<a name="5.2.0"></a>
+# [5.2.0](https://github.com/npm/ssri/compare/v5.1.0...v5.2.0) (2018-02-06)
+
+
+### Features
+
+* **match:** add integrity.match() ([3c49cc4](https://github.com/npm/ssri/commit/3c49cc4))
+
+
+
+<a name="5.1.0"></a>
+# [5.1.0](https://github.com/npm/ssri/compare/v5.0.0...v5.1.0) (2018-01-18)
+
+
+### Bug Fixes
+
+* **checkStream:** integrityStream now takes opts.integrity algos into account ([d262910](https://github.com/npm/ssri/commit/d262910))
+
+
+### Features
+
+* **sha3:** do some guesswork about upcoming sha3 ([7fdd9df](https://github.com/npm/ssri/commit/7fdd9df))
+
+
+
+<a name="5.0.0"></a>
+# [5.0.0](https://github.com/npm/ssri/compare/v4.1.6...v5.0.0) (2017-10-23)
+
+
+### Features
+
+* **license:** relicense to ISC (#9) ([c82983a](https://github.com/npm/ssri/commit/c82983a))
+
+
+### BREAKING CHANGES
+
+* **license:** the license has been changed from CC0-1.0 to ISC.
+
+
+
+<a name="4.1.6"></a>
+## [4.1.6](https://github.com/npm/ssri/compare/v4.1.5...v4.1.6) (2017-06-07)
+
+
+### Bug Fixes
+
+* **checkStream:** make sure to pass all opts through ([0b1bcbe](https://github.com/npm/ssri/commit/0b1bcbe))
+
+
+
+<a name="4.1.5"></a>
+## [4.1.5](https://github.com/npm/ssri/compare/v4.1.4...v4.1.5) (2017-06-05)
+
+
+### Bug Fixes
+
+* **integrityStream:** stop crashing if opts.algorithms and opts.integrity have an algo mismatch ([fb1293e](https://github.com/npm/ssri/commit/fb1293e))
+
+
+
+<a name="4.1.4"></a>
+## [4.1.4](https://github.com/npm/ssri/compare/v4.1.3...v4.1.4) (2017-05-31)
+
+
+### Bug Fixes
+
+* **node:** older versions of node[@4](https://github.com/4) do not support base64buffer string parsing ([513df4e](https://github.com/npm/ssri/commit/513df4e))
+
+
+
+<a name="4.1.3"></a>
+## [4.1.3](https://github.com/npm/ssri/compare/v4.1.2...v4.1.3) (2017-05-24)
+
+
+### Bug Fixes
+
+* **check:** handle various bad hash corner cases better ([c2c262b](https://github.com/npm/ssri/commit/c2c262b))
+
+
+
+<a name="4.1.2"></a>
+## [4.1.2](https://github.com/npm/ssri/compare/v4.1.1...v4.1.2) (2017-04-18)
+
+
+### Bug Fixes
+
+* **stream:** _flush can be called multiple times. use on("end") ([b1c4805](https://github.com/npm/ssri/commit/b1c4805))
+
+
+
+<a name="4.1.1"></a>
+## [4.1.1](https://github.com/npm/ssri/compare/v4.1.0...v4.1.1) (2017-04-12)
+
+
+### Bug Fixes
+
+* **pickAlgorithm:** error if pickAlgorithm() is used in an empty Integrity ([fab470e](https://github.com/npm/ssri/commit/fab470e))
+
+
+
+<a name="4.1.0"></a>
+# [4.1.0](https://github.com/npm/ssri/compare/v4.0.0...v4.1.0) (2017-04-07)
+
+
+### Features
+
+* adding ssri.create for a crypto style interface (#2) ([96f52ad](https://github.com/npm/ssri/commit/96f52ad))
+
+
+
+<a name="4.0.0"></a>
+# [4.0.0](https://github.com/npm/ssri/compare/v3.0.2...v4.0.0) (2017-04-03)
+
+
+### Bug Fixes
+
+* **integrity:** should have changed the error code before. oops ([8381afa](https://github.com/npm/ssri/commit/8381afa))
+
+
+### BREAKING CHANGES
+
+* **integrity:** EBADCHECKSUM -> EINTEGRITY for verification errors
+
+
+
+<a name="3.0.2"></a>
+## [3.0.2](https://github.com/npm/ssri/compare/v3.0.1...v3.0.2) (2017-04-03)
+
+
+
+<a name="3.0.1"></a>
+## [3.0.1](https://github.com/npm/ssri/compare/v3.0.0...v3.0.1) (2017-04-03)
+
+
+### Bug Fixes
+
+* **package.json:** really should have these in the keywords because search ([a6ac6d0](https://github.com/npm/ssri/commit/a6ac6d0))
+
+
+
+<a name="3.0.0"></a>
+# [3.0.0](https://github.com/npm/ssri/compare/v2.0.0...v3.0.0) (2017-04-03)
+
+
+### Bug Fixes
+
+* **hashes:** IntegrityMetadata -> Hash ([d04aa1f](https://github.com/npm/ssri/commit/d04aa1f))
+
+
+### Features
+
+* **check:** return IntegrityMetadata on check success ([2301e74](https://github.com/npm/ssri/commit/2301e74))
+* **fromHex:** ssri.fromHex to make it easier to generate them from hex valus ([049b89e](https://github.com/npm/ssri/commit/049b89e))
+* **hex:** utility function for getting hex version of digest ([a9f021c](https://github.com/npm/ssri/commit/a9f021c))
+* **hexDigest:** added hexDigest method to Integrity objects too ([85208ba](https://github.com/npm/ssri/commit/85208ba))
+* **integrity:** add .isIntegrity and .isIntegrityMetadata ([1b29e6f](https://github.com/npm/ssri/commit/1b29e6f))
+* **integrityStream:** new stream that can both generate and check streamed data ([fd23e1b](https://github.com/npm/ssri/commit/fd23e1b))
+* **parse:** allow parsing straight into a single IntegrityMetadata object ([c8ddf48](https://github.com/npm/ssri/commit/c8ddf48))
+* **pickAlgorithm:** Intergrity#pickAlgorithm() added ([b97a796](https://github.com/npm/ssri/commit/b97a796))
+* **size:** calculate and update stream sizes ([02ed1ad](https://github.com/npm/ssri/commit/02ed1ad))
+
+
+### BREAKING CHANGES
+
+* **hashes:** `.isIntegrityMetadata` is now `.isHash`. Also, any references to `IntegrityMetadata` now refer to `Hash`.
+* **integrityStream:** createCheckerStream has been removed and replaced with a general-purpose integrityStream.
+
+To convert existing createCheckerStream code, move the `sri` argument into `opts.integrity` in integrityStream. All other options should be the same.
+* **check:** `checkData`, `checkStream`, and `createCheckerStream` now yield a whole IntegrityMetadata instance representing the first successful hash match.
+
+
+
+<a name="2.0.0"></a>
+# [2.0.0](https://github.com/npm/ssri/compare/v1.0.0...v2.0.0) (2017-03-24)
+
+
+### Bug Fixes
+
+* **strict-mode:** make regexes more rigid ([122a32c](https://github.com/npm/ssri/commit/122a32c))
+
+
+### Features
+
+* **api:** added serialize alias for unparse ([999b421](https://github.com/npm/ssri/commit/999b421))
+* **concat:** add Integrity#concat() ([cae12c7](https://github.com/npm/ssri/commit/cae12c7))
+* **pickAlgo:** pick the strongest algorithm provided, by default ([58c18f7](https://github.com/npm/ssri/commit/58c18f7))
+* **strict-mode:** strict SRI support ([3f0b64c](https://github.com/npm/ssri/commit/3f0b64c))
+* **stringify:** replaced unparse/serialize with stringify ([4acad30](https://github.com/npm/ssri/commit/4acad30))
+* **verification:** add opts.pickAlgorithm ([f72e658](https://github.com/npm/ssri/commit/f72e658))
+
+
+### BREAKING CHANGES
+
+* **pickAlgo:** ssri will prioritize specific hashes now
+* **stringify:** serialize and unparse have been removed. Use ssri.stringify instead.
+* **strict-mode:** functions that accepted an optional `sep` argument now expect `opts.sep`.
+
+
+
+<a name="1.0.0"></a>
+# 1.0.0 (2017-03-23)
+
+
+### Features
+
+* **api:** implemented initial api ([4fbb16b](https://github.com/npm/ssri/commit/4fbb16b))
+
+
+### BREAKING CHANGES
+
+* **api:** Initial API established.
diff --git a/sandbox/testAppNevena/Front/node_modules/ssri/LICENSE.md b/sandbox/testAppNevena/Front/node_modules/ssri/LICENSE.md
new file mode 100644
index 00000000..8d28acf8
--- /dev/null
+++ b/sandbox/testAppNevena/Front/node_modules/ssri/LICENSE.md
@@ -0,0 +1,16 @@
+ISC License
+
+Copyright (c) npm, Inc.
+
+Permission to use, copy, modify, and/or distribute this software for
+any purpose with or without fee is hereby granted, provided that the
+above copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE COPYRIGHT HOLDER DISCLAIMS
+ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
+COPYRIGHT HOLDER BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
+CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE
+USE OR PERFORMANCE OF THIS SOFTWARE.
diff --git a/sandbox/testAppNevena/Front/node_modules/ssri/README.md b/sandbox/testAppNevena/Front/node_modules/ssri/README.md
new file mode 100644
index 00000000..0cd41be8
--- /dev/null
+++ b/sandbox/testAppNevena/Front/node_modules/ssri/README.md
@@ -0,0 +1,528 @@
+# ssri [![npm version](https://img.shields.io/npm/v/ssri.svg)](https://npm.im/ssri) [![license](https://img.shields.io/npm/l/ssri.svg)](https://npm.im/ssri) [![Travis](https://img.shields.io/travis/npm/ssri.svg)](https://travis-ci.org/npm/ssri) [![AppVeyor](https://ci.appveyor.com/api/projects/status/github/npm/ssri?svg=true)](https://ci.appveyor.com/project/npm/ssri) [![Coverage Status](https://coveralls.io/repos/github/npm/ssri/badge.svg?branch=latest)](https://coveralls.io/github/npm/ssri?branch=latest)
+
+[`ssri`](https://github.com/npm/ssri), short for Standard Subresource
+Integrity, is a Node.js utility for parsing, manipulating, serializing,
+generating, and verifying [Subresource
+Integrity](https://w3c.github.io/webappsec/specs/subresourceintegrity/) hashes.
+
+## Install
+
+`$ npm install --save ssri`
+
+## Table of Contents
+
+* [Example](#example)
+* [Features](#features)
+* [Contributing](#contributing)
+* [API](#api)
+  * Parsing & Serializing
+    * [`parse`](#parse)
+    * [`stringify`](#stringify)
+    * [`Integrity#concat`](#integrity-concat)
+    * [`Integrity#merge`](#integrity-merge)
+    * [`Integrity#toString`](#integrity-to-string)
+    * [`Integrity#toJSON`](#integrity-to-json)
+    * [`Integrity#match`](#integrity-match)
+    * [`Integrity#pickAlgorithm`](#integrity-pick-algorithm)
+    * [`Integrity#hexDigest`](#integrity-hex-digest)
+  * Integrity Generation
+    * [`fromHex`](#from-hex)
+    * [`fromData`](#from-data)
+    * [`fromStream`](#from-stream)
+    * [`create`](#create)
+  * Integrity Verification
+    * [`checkData`](#check-data)
+    * [`checkStream`](#check-stream)
+    * [`integrityStream`](#integrity-stream)
+
+### Example
+
+```javascript
+const ssri = require('ssri')
+
+const integrity = 'sha512-9KhgCRIx/AmzC8xqYJTZRrnO8OW2Pxyl2DIMZSBOr0oDvtEFyht3xpp71j/r/pAe1DM+JI/A+line3jUBgzQ7A==?foo'
+
+// Parsing and serializing
+const parsed = ssri.parse(integrity)
+ssri.stringify(parsed) // === integrity (works on non-Integrity objects)
+parsed.toString() // === integrity
+
+// Async stream functions
+ssri.checkStream(fs.createReadStream('./my-file'), integrity).then(...)
+ssri.fromStream(fs.createReadStream('./my-file')).then(sri => {
+  sri.toString() === integrity
+})
+fs.createReadStream('./my-file').pipe(ssri.createCheckerStream(sri))
+
+// Sync data functions
+ssri.fromData(fs.readFileSync('./my-file')) // === parsed
+ssri.checkData(fs.readFileSync('./my-file'), integrity) // => 'sha512'
+```
+
+### Features
+
+* Parses and stringifies SRI strings.
+* Generates SRI strings from raw data or Streams.
+* Strict standard compliance.
+* `?foo` metadata option support.
+* Multiple entries for the same algorithm.
+* Object-based integrity hash manipulation.
+* Small footprint: no dependencies, concise implementation.
+* Full test coverage.
+* Customizable algorithm picker.
+
+### Contributing
+
+The ssri team enthusiastically welcomes contributions and project participation!
+There's a bunch of things you can do if you want to contribute! The [Contributor
+Guide](CONTRIBUTING.md) has all the information you need for everything from
+reporting bugs to contributing entire new features. Please don't hesitate to
+jump in if you'd like to, or even ask us questions if something isn't clear.
+
+### API
+
+#### <a name="parse"></a> `> ssri.parse(sri, [opts]) -> Integrity`
+
+Parses `sri` into an `Integrity` data structure. `sri` can be an integrity
+string, an `Hash`-like with `digest` and `algorithm` fields and an optional
+`options` field, or an `Integrity`-like object. The resulting object will be an
+`Integrity` instance that has this shape:
+
+```javascript
+{
+  'sha1': [{algorithm: 'sha1', digest: 'deadbeef', options: []}],
+  'sha512': [
+    {algorithm: 'sha512', digest: 'c0ffee', options: []},
+    {algorithm: 'sha512', digest: 'bad1dea', options: ['foo']}
+  ],
+}
+```
+
+If `opts.single` is truthy, a single `Hash` object will be returned. That is, a
+single object that looks like `{algorithm, digest, options}`, as opposed to a
+larger object with multiple of these.
+
+If `opts.strict` is truthy, the resulting object will be filtered such that
+it strictly follows the Subresource Integrity spec, throwing away any entries
+with any invalid components. This also means a restricted set of algorithms
+will be used -- the spec limits them to `sha256`, `sha384`, and `sha512`.
+
+Strict mode is recommended if the integrity strings are intended for use in
+browsers, or in other situations where strict adherence to the spec is needed.
+
+##### Example
+
+```javascript
+ssri.parse('sha512-9KhgCRIx/AmzC8xqYJTZRrnO8OW2Pxyl2DIMZSBOr0oDvtEFyht3xpp71j/r/pAe1DM+JI/A+line3jUBgzQ7A==?foo') // -> Integrity object
+```
+
+#### <a name="stringify"></a> `> ssri.stringify(sri, [opts]) -> String`
+
+This function is identical to [`Integrity#toString()`](#integrity-to-string),
+except it can be used on _any_ object that [`parse`](#parse) can handle -- that
+is, a string, an `Hash`-like, or an `Integrity`-like.
+
+The `opts.sep` option defines the string to use when joining multiple entries
+together. To be spec-compliant, this _must_ be whitespace. The default is a
+single space (`' '`).
+
+If `opts.strict` is true, the integrity string will be created using strict
+parsing rules. See [`ssri.parse`](#parse).
+
+##### Example
+
+```javascript
+// Useful for cleaning up input SRI strings:
+ssri.stringify('\n\rsha512-foo\n\t\tsha384-bar')
+// -> 'sha512-foo sha384-bar'
+
+// Hash-like: only a single entry.
+ssri.stringify({
+  algorithm: 'sha512',
+  digest:'9KhgCRIx/AmzC8xqYJTZRrnO8OW2Pxyl2DIMZSBOr0oDvtEFyht3xpp71j/r/pAe1DM+JI/A+line3jUBgzQ7A==',
+  options: ['foo']
+})
+// ->
+// 'sha512-9KhgCRIx/AmzC8xqYJTZRrnO8OW2Pxyl2DIMZSBOr0oDvtEFyht3xpp71j/r/pAe1DM+JI/A+line3jUBgzQ7A==?foo'
+
+// Integrity-like: full multi-entry syntax. Similar to output of `ssri.parse`
+ssri.stringify({
+  'sha512': [
+    {
+      algorithm: 'sha512',
+      digest:'9KhgCRIx/AmzC8xqYJTZRrnO8OW2Pxyl2DIMZSBOr0oDvtEFyht3xpp71j/r/pAe1DM+JI/A+line3jUBgzQ7A==',
+      options: ['foo']
+    }
+  ]
+})
+// ->
+// 'sha512-9KhgCRIx/AmzC8xqYJTZRrnO8OW2Pxyl2DIMZSBOr0oDvtEFyht3xpp71j/r/pAe1DM+JI/A+line3jUBgzQ7A==?foo'
+```
+
+#### <a name="integrity-concat"></a> `> Integrity#concat(otherIntegrity, [opts]) -> Integrity`
+
+Concatenates an `Integrity` object with another IntegrityLike, or an integrity
+string.
+
+This is functionally equivalent to concatenating the string format of both
+integrity arguments, and calling [`ssri.parse`](#ssri-parse) on the new string.
+
+If `opts.strict` is true, the new `Integrity` will be created using strict
+parsing rules. See [`ssri.parse`](#parse).
+
+##### Example
+
+```javascript
+// This will combine the integrity checks for two different versions of
+// your index.js file so you can use a single integrity string and serve
+// either of these to clients, from a single `<script>` tag.
+const desktopIntegrity = ssri.fromData(fs.readFileSync('./index.desktop.js'))
+const mobileIntegrity = ssri.fromData(fs.readFileSync('./index.mobile.js'))
+
+// Note that browsers (and ssri) will succeed as long as ONE of the entries
+// for the *prioritized* algorithm succeeds. That is, in order for this fallback
+// to work, both desktop and mobile *must* use the same `algorithm` values.
+desktopIntegrity.concat(mobileIntegrity)
+```
+
+#### <a name="integrity-merge"></a> `> Integrity#merge(otherIntegrity, [opts])`
+
+Safely merges another IntegrityLike or integrity string into an `Integrity`
+object.
+
+If the other integrity value has any algorithms in common with the current
+object, then the hash digests must match, or an error is thrown.
+
+Any new hashes will be added to the current object's set.
+
+This is useful when an integrity value may be upgraded with a stronger
+algorithm, you wish to prevent accidentally supressing integrity errors by
+overwriting the expected integrity value.
+
+##### Example
+
+```javascript
+const data = fs.readFileSync('data.txt')
+
+// integrity.txt contains 'sha1-X1UT+IIv2+UUWvM7ZNjZcNz5XG4='
+// because we were young, and didn't realize sha1 would not last
+const expectedIntegrity = ssri.parse(fs.readFileSync('integrity.txt', 'utf8'))
+const match = ssri.checkData(data, expectedIntegrity, {
+  algorithms: ['sha512', 'sha1']
+})
+if (!match) {
+  throw new Error('data corrupted or something!')
+}
+
+// get a stronger algo!
+if (match && match.algorithm !== 'sha512') {
+  const updatedIntegrity = ssri.fromData(data, { algorithms: ['sha512'] })
+  expectedIntegrity.merge(updatedIntegrity)
+  fs.writeFileSync('integrity.txt', expectedIntegrity.toString())
+  // file now contains
+  // 'sha1-X1UT+IIv2+UUWvM7ZNjZcNz5XG4= sha512-yzd8ELD1piyANiWnmdnpCL5F52f10UfUdEkHywVZeqTt0ymgrxR63Qz0GB7TKPoeeZQmWCaz7T1+9vBnypkYWg=='
+}
+```
+
+#### <a name="integrity-to-string"></a> `> Integrity#toString([opts]) -> String`
+
+Returns the string representation of an `Integrity` object. All hash entries
+will be concatenated in the string by `opts.sep`, which defaults to `' '`.
+
+If you want to serialize an object that didn't come from an `ssri` function,
+use [`ssri.stringify()`](#stringify).
+
+If `opts.strict` is true, the integrity string will be created using strict
+parsing rules. See [`ssri.parse`](#parse).
+
+##### Example
+
+```javascript
+const integrity = 'sha512-9KhgCRIx/AmzC8xqYJTZRrnO8OW2Pxyl2DIMZSBOr0oDvtEFyht3xpp71j/r/pAe1DM+JI/A+line3jUBgzQ7A==?foo'
+
+ssri.parse(integrity).toString() === integrity
+```
+
+#### <a name="integrity-to-json"></a> `> Integrity#toJSON() -> String`
+
+Returns the string representation of an `Integrity` object. All hash entries
+will be concatenated in the string by `' '`.
+
+This is a convenience method so you can pass an `Integrity` object directly to `JSON.stringify`.
+For more info check out [toJSON() behavior on mdn](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify#toJSON%28%29_behavior).
+
+##### Example
+
+```javascript
+const integrity = '"sha512-9KhgCRIx/AmzC8xqYJTZRrnO8OW2Pxyl2DIMZSBOr0oDvtEFyht3xpp71j/r/pAe1DM+JI/A+line3jUBgzQ7A==?foo"'
+
+JSON.stringify(ssri.parse(integrity)) === integrity
+```
+
+#### <a name="integrity-match"></a> `> Integrity#match(sri, [opts]) -> Hash | false`
+
+Returns the matching (truthy) hash if `Integrity` matches the argument passed as
+`sri`, which can be anything that [`parse`](#parse) will accept. `opts` will be
+passed through to `parse` and [`pickAlgorithm()`](#integrity-pick-algorithm).
+
+##### Example
+
+```javascript
+const integrity = 'sha512-9KhgCRIx/AmzC8xqYJTZRrnO8OW2Pxyl2DIMZSBOr0oDvtEFyht3xpp71j/r/pAe1DM+JI/A+line3jUBgzQ7A=='
+
+ssri.parse(integrity).match(integrity)
+// Hash {
+//   digest: '9KhgCRIx/AmzC8xqYJTZRrnO8OW2Pxyl2DIMZSBOr0oDvtEFyht3xpp71j/r/pAe1DM+JI/A+line3jUBgzQ7A=='
+//   algorithm: 'sha512'
+// }
+
+ssri.parse(integrity).match('sha1-deadbeef')
+// false
+```
+
+#### <a name="integrity-pick-algorithm"></a> `> Integrity#pickAlgorithm([opts]) -> String`
+
+Returns the "best" algorithm from those available in the integrity object.
+
+If `opts.pickAlgorithm` is provided, it will be passed two algorithms as
+arguments. ssri will prioritize whichever of the two algorithms is returned by
+this function. Note that the function may be called multiple times, and it
+**must** return one of the two algorithms provided. By default, ssri will make
+a best-effort to pick the strongest/most reliable of the given algorithms. It
+may intentionally deprioritize algorithms with known vulnerabilities.
+
+##### Example
+
+```javascript
+ssri.parse('sha1-WEakDigEST sha512-yzd8ELD1piyANiWnmdnpCL5F52f10UfUdEkHywVZeqTt0ymgrxR63Qz0GB7TKPoeeZQmWCaz7T1').pickAlgorithm() // sha512
+```
+
+#### <a name="integrity-hex-digest"></a> `> Integrity#hexDigest() -> String`
+
+`Integrity` is assumed to be either a single-hash `Integrity` instance, or a
+`Hash` instance. Returns its `digest`, converted to a hex representation of the
+base64 data.
+
+##### Example
+
+```javascript
+ssri.parse('sha1-deadbeef').hexDigest() // '75e69d6de79f'
+```
+
+#### <a name="from-hex"></a> `> ssri.fromHex(hexDigest, algorithm, [opts]) -> Integrity`
+
+Creates an `Integrity` object with a single entry, based on a hex-formatted
+hash. This is a utility function to help convert existing shasums to the
+Integrity format, and is roughly equivalent to something like:
+
+```javascript
+algorithm + '-' + Buffer.from(hexDigest, 'hex').toString('base64')
+```
+
+`opts.options` may optionally be passed in: it must be an array of option
+strings that will be added to all generated integrity hashes generated by
+`fromData`. This is a loosely-specified feature of SRIs, and currently has no
+specified semantics besides being `?`-separated. Use at your own risk, and
+probably avoid if your integrity strings are meant to be used with browsers.
+
+If `opts.strict` is true, the integrity object will be created using strict
+parsing rules. See [`ssri.parse`](#parse).
+
+If `opts.single` is true, a single `Hash` object will be returned.
+
+##### Example
+
+```javascript
+ssri.fromHex('75e69d6de79f', 'sha1').toString() // 'sha1-deadbeef'
+```
+
+#### <a name="from-data"></a> `> ssri.fromData(data, [opts]) -> Integrity`
+
+Creates an `Integrity` object from either string or `Buffer` data, calculating
+all the requested hashes and adding any specified options to the object.
+
+`opts.algorithms` determines which algorithms to generate hashes for. All
+results will be included in a single `Integrity` object. The default value for
+`opts.algorithms` is `['sha512']`. All algorithm strings must be hashes listed
+in `crypto.getHashes()` for the host Node.js platform.
+
+`opts.options` may optionally be passed in: it must be an array of option
+strings that will be added to all generated integrity hashes generated by
+`fromData`. This is a loosely-specified feature of SRIs, and currently has no
+specified semantics besides being `?`-separated. Use at your own risk, and
+probably avoid if your integrity strings are meant to be used with browsers.
+
+If `opts.strict` is true, the integrity object will be created using strict
+parsing rules. See [`ssri.parse`](#parse).
+
+##### Example
+
+```javascript
+const integrityObj = ssri.fromData('foobarbaz', {
+  algorithms: ['sha256', 'sha384', 'sha512']
+})
+integrity.toString('\n')
+// ->
+// sha256-l981iLWj8kurw4UbNy8Lpxqdzd7UOxS50Glhv8FwfZ0=
+// sha384-irnCxQ0CfQhYGlVAUdwTPC9bF3+YWLxlaDGM4xbYminxpbXEq+D+2GCEBTxcjES9
+// sha512-yzd8ELD1piyANiWnmdnpCL5F52f10UfUdEkHywVZeqTt0ymgrxR63Qz0GB7TKPoeeZQmWCaz7T1+9vBnypkYWg==
+```
+
+#### <a name="from-stream"></a> `> ssri.fromStream(stream, [opts]) -> Promise<Integrity>`
+
+Returns a Promise of an Integrity object calculated by reading data from
+a given `stream`.
+
+It accepts both `opts.algorithms` and `opts.options`, which are documented as
+part of [`ssri.fromData`](#from-data).
+
+Additionally, `opts.Promise` may be passed in to inject a Promise library of
+choice. By default, ssri will use Node's built-in Promises.
+
+If `opts.strict` is true, the integrity object will be created using strict
+parsing rules. See [`ssri.parse`](#parse).
+
+##### Example
+
+```javascript
+ssri.fromStream(fs.createReadStream('index.js'), {
+  algorithms: ['sha1', 'sha512']
+}).then(integrity => {
+  return ssri.checkStream(fs.createReadStream('index.js'), integrity)
+}) // succeeds
+```
+
+#### <a name="create"></a> `> ssri.create([opts]) -> <Hash>`
+
+Returns a Hash object with `update(<Buffer or string>[,enc])` and `digest()` methods.
+
+
+The Hash object provides the same methods as [crypto class Hash](https://nodejs.org/dist/latest-v6.x/docs/api/crypto.html#crypto_class_hash).
+`digest()` accepts no arguments and returns an Integrity object calculated by reading data from
+calls to update.
+
+It accepts both `opts.algorithms` and `opts.options`, which are documented as
+part of [`ssri.fromData`](#from-data).
+
+If `opts.strict` is true, the integrity object will be created using strict
+parsing rules. See [`ssri.parse`](#parse).
+
+##### Example
+
+```javascript
+const integrity = ssri.create().update('foobarbaz').digest()
+integrity.toString()
+// ->
+// sha512-yzd8ELD1piyANiWnmdnpCL5F52f10UfUdEkHywVZeqTt0ymgrxR63Qz0GB7TKPoeeZQmWCaz7T1+9vBnypkYWg==
+```
+
+#### <a name="check-data"></a> `> ssri.checkData(data, sri, [opts]) -> Hash|false`
+
+Verifies `data` integrity against an `sri` argument. `data` may be either a
+`String` or a `Buffer`, and `sri` can be any subresource integrity
+representation that [`ssri.parse`](#parse) can handle.
+
+If verification succeeds, `checkData` will return the name of the algorithm that
+was used for verification (a truthy value). Otherwise, it will return `false`.
+
+If `opts.pickAlgorithm` is provided, it will be used by
+[`Integrity#pickAlgorithm`](#integrity-pick-algorithm) when deciding which of
+the available digests to match against.
+
+If `opts.error` is true, and verification fails, `checkData` will throw either
+an `EBADSIZE` or an `EINTEGRITY` error, instead of just returning false.
+
+##### Example
+
+```javascript
+const data = fs.readFileSync('index.js')
+ssri.checkData(data, ssri.fromData(data)) // -> 'sha512'
+ssri.checkData(data, 'sha256-l981iLWj8kurw4UbNy8Lpxqdzd7UOxS50Glhv8FwfZ0')
+ssri.checkData(data, 'sha1-BaDDigEST') // -> false
+ssri.checkData(data, 'sha1-BaDDigEST', {error: true}) // -> Error! EINTEGRITY
+```
+
+#### <a name="check-stream"></a> `> ssri.checkStream(stream, sri, [opts]) -> Promise<Hash>`
+
+Verifies the contents of `stream` against an `sri` argument. `stream` will be
+consumed in its entirety by this process. `sri` can be any subresource integrity
+representation that [`ssri.parse`](#parse) can handle.
+
+`checkStream` will return a Promise that either resolves to the
+`Hash` that succeeded verification, or, if the verification fails
+or an error happens with `stream`, the Promise will be rejected.
+
+If the Promise is rejected because verification failed, the returned error will
+have `err.code` as `EINTEGRITY`.
+
+If `opts.size` is given, it will be matched against the stream size. An error
+with `err.code` `EBADSIZE` will be returned by a rejection if the expected size
+and actual size fail to match.
+
+If `opts.pickAlgorithm` is provided, it will be used by
+[`Integrity#pickAlgorithm`](#integrity-pick-algorithm) when deciding which of
+the available digests to match against.
+
+##### Example
+
+```javascript
+const integrity = ssri.fromData(fs.readFileSync('index.js'))
+
+ssri.checkStream(
+  fs.createReadStream('index.js'),
+  integrity
+)
+// ->
+// Promise<{
+//   algorithm: 'sha512',
+//   digest: 'sha512-yzd8ELD1piyANiWnmdnpCL5F52f10UfUdEkHywVZeqTt0ymgrxR63Qz0GB7TKPoeeZQmWCaz7T1'
+// }>
+
+ssri.checkStream(
+  fs.createReadStream('index.js'),
+  'sha256-l981iLWj8kurw4UbNy8Lpxqdzd7UOxS50Glhv8FwfZ0'
+) // -> Promise<Hash>
+
+ssri.checkStream(
+  fs.createReadStream('index.js'),
+  'sha1-BaDDigEST'
+) // -> Promise<Error<{code: 'EINTEGRITY'}>>
+```
+
+#### <a name="integrity-stream"></a> `> integrityStream([opts]) -> IntegrityStream`
+
+Returns a `Transform` stream that data can be piped through in order to generate
+and optionally check data integrity for piped data. When the stream completes
+successfully, it emits `size` and `integrity` events, containing the total
+number of bytes processed and a calculated `Integrity` instance based on stream
+data, respectively.
+
+If `opts.algorithms` is passed in, the listed algorithms will be calculated when
+generating the final `Integrity` instance. The default is `['sha512']`.
+
+If `opts.single` is passed in, a single `Hash` instance will be returned.
+
+If `opts.integrity` is passed in, it should be an `integrity` value understood
+by [`parse`](#parse) that the stream will check the data against. If
+verification succeeds, the integrity stream will emit a `verified` event whose
+value is a single `Hash` object that is the one that succeeded verification. If
+verification fails, the stream will error with an `EINTEGRITY` error code.
+
+If `opts.size` is given, it will be matched against the stream size. An error
+with `err.code` `EBADSIZE` will be emitted by the stream if the expected size
+and actual size fail to match.
+
+If `opts.pickAlgorithm` is provided, it will be passed two algorithms as
+arguments. ssri will prioritize whichever of the two algorithms is returned by
+this function. Note that the function may be called multiple times, and it
+**must** return one of the two algorithms provided. By default, ssri will make
+a best-effort to pick the strongest/most reliable of the given algorithms. It
+may intentionally deprioritize algorithms with known vulnerabilities.
+
+##### Example
+
+```javascript
+const integrity = ssri.fromData(fs.readFileSync('index.js'))
+fs.createReadStream('index.js')
+.pipe(ssri.integrityStream({integrity}))
+```
diff --git a/sandbox/testAppNevena/Front/node_modules/ssri/index.js b/sandbox/testAppNevena/Front/node_modules/ssri/index.js
new file mode 100644
index 00000000..2b309849
--- /dev/null
+++ b/sandbox/testAppNevena/Front/node_modules/ssri/index.js
@@ -0,0 +1,470 @@
+'use strict'
+
+const crypto = require('crypto')
+const MiniPass = require('minipass')
+
+const SPEC_ALGORITHMS = ['sha256', 'sha384', 'sha512']
+
+// TODO: this should really be a hardcoded list of algorithms we support,
+// rather than [a-z0-9].
+const BASE64_REGEX = /^[a-z0-9+/]+(?:=?=?)$/i
+const SRI_REGEX = /^([a-z0-9]+)-([^?]+)([?\S*]*)$/
+const STRICT_SRI_REGEX = /^([a-z0-9]+)-([A-Za-z0-9+/=]{44,88})(\?[\x21-\x7E]*)?$/
+const VCHAR_REGEX = /^[\x21-\x7E]+$/
+
+const defaultOpts = {
+  algorithms: ['sha512'],
+  error: false,
+  options: [],
+  pickAlgorithm: getPrioritizedHash,
+  sep: ' ',
+  single: false,
+  strict: false
+}
+
+const ssriOpts = (opts = {}) => ({ ...defaultOpts, ...opts })
+
+const getOptString = options => !options || !options.length
+  ? ''
+  : `?${options.join('?')}`
+
+const _onEnd = Symbol('_onEnd')
+const _getOptions = Symbol('_getOptions')
+class IntegrityStream extends MiniPass {
+  constructor (opts) {
+    super()
+    this.size = 0
+    this.opts = opts
+
+    // may be overridden later, but set now for class consistency
+    this[_getOptions]()
+
+    // options used for calculating stream.  can't be changed.
+    const { algorithms = defaultOpts.algorithms } = opts
+    this.algorithms = Array.from(
+      new Set(algorithms.concat(this.algorithm ? [this.algorithm] : []))
+    )
+    this.hashes = this.algorithms.map(crypto.createHash)
+  }
+
+  [_getOptions] () {
+    const {
+      integrity,
+      size,
+      options
+    } = { ...defaultOpts, ...this.opts }
+
+    // For verification
+    this.sri = integrity ? parse(integrity, this.opts) : null
+    this.expectedSize = size
+    this.goodSri = this.sri ? !!Object.keys(this.sri).length : false
+    this.algorithm = this.goodSri ? this.sri.pickAlgorithm(this.opts) : null
+    this.digests = this.goodSri ? this.sri[this.algorithm] : null
+    this.optString = getOptString(options)
+  }
+
+  emit (ev, data) {
+    if (ev === 'end') this[_onEnd]()
+    return super.emit(ev, data)
+  }
+
+  write (data) {
+    this.size += data.length
+    this.hashes.forEach(h => h.update(data))
+    return super.write(data)
+  }
+
+  [_onEnd] () {
+    if (!this.goodSri) {
+      this[_getOptions]()
+    }
+    const newSri = parse(this.hashes.map((h, i) => {
+      return `${this.algorithms[i]}-${h.digest('base64')}${this.optString}`
+    }).join(' '), this.opts)
+    // Integrity verification mode
+    const match = this.goodSri && newSri.match(this.sri, this.opts)
+    if (typeof this.expectedSize === 'number' && this.size !== this.expectedSize) {
+      const err = new Error(`stream size mismatch when checking ${this.sri}.\n  Wanted: ${this.expectedSize}\n  Found: ${this.size}`)
+      err.code = 'EBADSIZE'
+      err.found = this.size
+      err.expected = this.expectedSize
+      err.sri = this.sri
+      this.emit('error', err)
+    } else if (this.sri && !match) {
+      const err = new Error(`${this.sri} integrity checksum failed when using ${this.algorithm}: wanted ${this.digests} but got ${newSri}. (${this.size} bytes)`)
+      err.code = 'EINTEGRITY'
+      err.found = newSri
+      err.expected = this.digests
+      err.algorithm = this.algorithm
+      err.sri = this.sri
+      this.emit('error', err)
+    } else {
+      this.emit('size', this.size)
+      this.emit('integrity', newSri)
+      match && this.emit('verified', match)
+    }
+  }
+}
+
+class Hash {
+  get isHash () { return true }
+  constructor (hash, opts) {
+    opts = ssriOpts(opts)
+    const strict = !!opts.strict
+    this.source = hash.trim()
+
+    // set default values so that we make V8 happy to
+    // always see a familiar object template.
+    this.digest = ''
+    this.algorithm = ''
+    this.options = []
+
+    // 3.1. Integrity metadata (called "Hash" by ssri)
+    // https://w3c.github.io/webappsec-subresource-integrity/#integrity-metadata-description
+    const match = this.source.match(
+      strict
+        ? STRICT_SRI_REGEX
+        : SRI_REGEX
+    )
+    if (!match) { return }
+    if (strict && !SPEC_ALGORITHMS.some(a => a === match[1])) { return }
+    this.algorithm = match[1]
+    this.digest = match[2]
+
+    const rawOpts = match[3]
+    if (rawOpts) {
+      this.options = rawOpts.slice(1).split('?')
+    }
+  }
+
+  hexDigest () {
+    return this.digest && Buffer.from(this.digest, 'base64').toString('hex')
+  }
+
+  toJSON () {
+    return this.toString()
+  }
+
+  toString (opts) {
+    opts = ssriOpts(opts)
+    if (opts.strict) {
+      // Strict mode enforces the standard as close to the foot of the
+      // letter as it can.
+      if (!(
+        // The spec has very restricted productions for algorithms.
+        // https://www.w3.org/TR/CSP2/#source-list-syntax
+        SPEC_ALGORITHMS.some(x => x === this.algorithm) &&
+        // Usually, if someone insists on using a "different" base64, we
+        // leave it as-is, since there's multiple standards, and the
+        // specified is not a URL-safe variant.
+        // https://www.w3.org/TR/CSP2/#base64_value
+        this.digest.match(BASE64_REGEX) &&
+        // Option syntax is strictly visual chars.
+        // https://w3c.github.io/webappsec-subresource-integrity/#grammardef-option-expression
+        // https://tools.ietf.org/html/rfc5234#appendix-B.1
+        this.options.every(opt => opt.match(VCHAR_REGEX))
+      )) {
+        return ''
+      }
+    }
+    const options = this.options && this.options.length
+      ? `?${this.options.join('?')}`
+      : ''
+    return `${this.algorithm}-${this.digest}${options}`
+  }
+}
+
+class Integrity {
+  get isIntegrity () { return true }
+  toJSON () {
+    return this.toString()
+  }
+
+  isEmpty () {
+    return Object.keys(this).length === 0
+  }
+
+  toString (opts) {
+    opts = ssriOpts(opts)
+    let sep = opts.sep || ' '
+    if (opts.strict) {
+      // Entries must be separated by whitespace, according to spec.
+      sep = sep.replace(/\S+/g, ' ')
+    }
+    return Object.keys(this).map(k => {
+      return this[k].map(hash => {
+        return Hash.prototype.toString.call(hash, opts)
+      }).filter(x => x.length).join(sep)
+    }).filter(x => x.length).join(sep)
+  }
+
+  concat (integrity, opts) {
+    opts = ssriOpts(opts)
+    const other = typeof integrity === 'string'
+      ? integrity
+      : stringify(integrity, opts)
+    return parse(`${this.toString(opts)} ${other}`, opts)
+  }
+
+  hexDigest () {
+    return parse(this, { single: true }).hexDigest()
+  }
+
+  // add additional hashes to an integrity value, but prevent
+  // *changing* an existing integrity hash.
+  merge (integrity, opts) {
+    opts = ssriOpts(opts)
+    const other = parse(integrity, opts)
+    for (const algo in other) {
+      if (this[algo]) {
+        if (!this[algo].find(hash =>
+          other[algo].find(otherhash =>
+            hash.digest === otherhash.digest))) {
+          throw new Error('hashes do not match, cannot update integrity')
+        }
+      } else {
+        this[algo] = other[algo]
+      }
+    }
+  }
+
+  match (integrity, opts) {
+    opts = ssriOpts(opts)
+    const other = parse(integrity, opts)
+    const algo = other.pickAlgorithm(opts)
+    return (
+      this[algo] &&
+      other[algo] &&
+      this[algo].find(hash =>
+        other[algo].find(otherhash =>
+          hash.digest === otherhash.digest
+        )
+      )
+    ) || false
+  }
+
+  pickAlgorithm (opts) {
+    opts = ssriOpts(opts)
+    const pickAlgorithm = opts.pickAlgorithm
+    const keys = Object.keys(this)
+    return keys.reduce((acc, algo) => {
+      return pickAlgorithm(acc, algo) || acc
+    })
+  }
+}
+
+module.exports.parse = parse
+function parse (sri, opts) {
+  if (!sri) return null
+  opts = ssriOpts(opts)
+  if (typeof sri === 'string') {
+    return _parse(sri, opts)
+  } else if (sri.algorithm && sri.digest) {
+    const fullSri = new Integrity()
+    fullSri[sri.algorithm] = [sri]
+    return _parse(stringify(fullSri, opts), opts)
+  } else {
+    return _parse(stringify(sri, opts), opts)
+  }
+}
+
+function _parse (integrity, opts) {
+  // 3.4.3. Parse metadata
+  // https://w3c.github.io/webappsec-subresource-integrity/#parse-metadata
+  if (opts.single) {
+    return new Hash(integrity, opts)
+  }
+  const hashes = integrity.trim().split(/\s+/).reduce((acc, string) => {
+    const hash = new Hash(string, opts)
+    if (hash.algorithm && hash.digest) {
+      const algo = hash.algorithm
+      if (!acc[algo]) { acc[algo] = [] }
+      acc[algo].push(hash)
+    }
+    return acc
+  }, new Integrity())
+  return hashes.isEmpty() ? null : hashes
+}
+
+module.exports.stringify = stringify
+function stringify (obj, opts) {
+  opts = ssriOpts(opts)
+  if (obj.algorithm && obj.digest) {
+    return Hash.prototype.toString.call(obj, opts)
+  } else if (typeof obj === 'string') {
+    return stringify(parse(obj, opts), opts)
+  } else {
+    return Integrity.prototype.toString.call(obj, opts)
+  }
+}
+
+module.exports.fromHex = fromHex
+function fromHex (hexDigest, algorithm, opts) {
+  opts = ssriOpts(opts)
+  const optString = getOptString(opts.options)
+  return parse(
+    `${algorithm}-${
+      Buffer.from(hexDigest, 'hex').toString('base64')
+    }${optString}`, opts
+  )
+}
+
+module.exports.fromData = fromData
+function fromData (data, opts) {
+  opts = ssriOpts(opts)
+  const algorithms = opts.algorithms
+  const optString = getOptString(opts.options)
+  return algorithms.reduce((acc, algo) => {
+    const digest = crypto.createHash(algo).update(data).digest('base64')
+    const hash = new Hash(
+      `${algo}-${digest}${optString}`,
+      opts
+    )
+    /* istanbul ignore else - it would be VERY strange if the string we
+     * just calculated with an algo did not have an algo or digest.
+     */
+    if (hash.algorithm && hash.digest) {
+      const algo = hash.algorithm
+      if (!acc[algo]) { acc[algo] = [] }
+      acc[algo].push(hash)
+    }
+    return acc
+  }, new Integrity())
+}
+
+module.exports.fromStream = fromStream
+function fromStream (stream, opts) {
+  opts = ssriOpts(opts)
+  const istream = integrityStream(opts)
+  return new Promise((resolve, reject) => {
+    stream.pipe(istream)
+    stream.on('error', reject)
+    istream.on('error', reject)
+    let sri
+    istream.on('integrity', s => { sri = s })
+    istream.on('end', () => resolve(sri))
+    istream.on('data', () => {})
+  })
+}
+
+module.exports.checkData = checkData
+function checkData (data, sri, opts) {
+  opts = ssriOpts(opts)
+  sri = parse(sri, opts)
+  if (!sri || !Object.keys(sri).length) {
+    if (opts.error) {
+      throw Object.assign(
+        new Error('No valid integrity hashes to check against'), {
+          code: 'EINTEGRITY'
+        }
+      )
+    } else {
+      return false
+    }
+  }
+  const algorithm = sri.pickAlgorithm(opts)
+  const digest = crypto.createHash(algorithm).update(data).digest('base64')
+  const newSri = parse({ algorithm, digest })
+  const match = newSri.match(sri, opts)
+  if (match || !opts.error) {
+    return match
+  } else if (typeof opts.size === 'number' && (data.length !== opts.size)) {
+    const err = new Error(`data size mismatch when checking ${sri}.\n  Wanted: ${opts.size}\n  Found: ${data.length}`)
+    err.code = 'EBADSIZE'
+    err.found = data.length
+    err.expected = opts.size
+    err.sri = sri
+    throw err
+  } else {
+    const err = new Error(`Integrity checksum failed when using ${algorithm}: Wanted ${sri}, but got ${newSri}. (${data.length} bytes)`)
+    err.code = 'EINTEGRITY'
+    err.found = newSri
+    err.expected = sri
+    err.algorithm = algorithm
+    err.sri = sri
+    throw err
+  }
+}
+
+module.exports.checkStream = checkStream
+function checkStream (stream, sri, opts) {
+  opts = ssriOpts(opts)
+  opts.integrity = sri
+  sri = parse(sri, opts)
+  if (!sri || !Object.keys(sri).length) {
+    return Promise.reject(Object.assign(
+      new Error('No valid integrity hashes to check against'), {
+        code: 'EINTEGRITY'
+      }
+    ))
+  }
+  const checker = integrityStream(opts)
+  return new Promise((resolve, reject) => {
+    stream.pipe(checker)
+    stream.on('error', reject)
+    checker.on('error', reject)
+    let sri
+    checker.on('verified', s => { sri = s })
+    checker.on('end', () => resolve(sri))
+    checker.on('data', () => {})
+  })
+}
+
+module.exports.integrityStream = integrityStream
+function integrityStream (opts = {}) {
+  return new IntegrityStream(opts)
+}
+
+module.exports.create = createIntegrity
+function createIntegrity (opts) {
+  opts = ssriOpts(opts)
+  const algorithms = opts.algorithms
+  const optString = getOptString(opts.options)
+
+  const hashes = algorithms.map(crypto.createHash)
+
+  return {
+    update: function (chunk, enc) {
+      hashes.forEach(h => h.update(chunk, enc))
+      return this
+    },
+    digest: function (enc) {
+      const integrity = algorithms.reduce((acc, algo) => {
+        const digest = hashes.shift().digest('base64')
+        const hash = new Hash(
+          `${algo}-${digest}${optString}`,
+          opts
+        )
+        /* istanbul ignore else - it would be VERY strange if the hash we
+         * just calculated with an algo did not have an algo or digest.
+         */
+        if (hash.algorithm && hash.digest) {
+          const algo = hash.algorithm
+          if (!acc[algo]) { acc[algo] = [] }
+          acc[algo].push(hash)
+        }
+        return acc
+      }, new Integrity())
+
+      return integrity
+    }
+  }
+}
+
+const NODE_HASHES = new Set(crypto.getHashes())
+
+// This is a Best Effort™ at a reasonable priority for hash algos
+const DEFAULT_PRIORITY = [
+  'md5', 'whirlpool', 'sha1', 'sha224', 'sha256', 'sha384', 'sha512',
+  // TODO - it's unclear _which_ of these Node will actually use as its name
+  //        for the algorithm, so we guesswork it based on the OpenSSL names.
+  'sha3',
+  'sha3-256', 'sha3-384', 'sha3-512',
+  'sha3_256', 'sha3_384', 'sha3_512'
+].filter(algo => NODE_HASHES.has(algo))
+
+function getPrioritizedHash (algo1, algo2) {
+  return DEFAULT_PRIORITY.indexOf(algo1.toLowerCase()) >= DEFAULT_PRIORITY.indexOf(algo2.toLowerCase())
+    ? algo1
+    : algo2
+}
diff --git a/sandbox/testAppNevena/Front/node_modules/ssri/package.json b/sandbox/testAppNevena/Front/node_modules/ssri/package.json
new file mode 100644
index 00000000..4af1a3c4
--- /dev/null
+++ b/sandbox/testAppNevena/Front/node_modules/ssri/package.json
@@ -0,0 +1,52 @@
+{
+  "name": "ssri",
+  "version": "8.0.1",
+  "description": "Standard Subresource Integrity library -- parses, serializes, generates, and verifies integrity metadata according to the SRI spec.",
+  "main": "index.js",
+  "files": [],
+  "scripts": {
+    "prerelease": "npm t",
+    "postrelease": "npm publish",
+    "prepublishOnly": "git push --follow-tags",
+    "posttest": "npm run lint",
+    "release": "standard-version -s",
+    "test": "tap",
+    "coverage": "tap",
+    "lint": "standard"
+  },
+  "tap": {
+    "check-coverage": true
+  },
+  "repository": "https://github.com/npm/ssri",
+  "keywords": [
+    "w3c",
+    "web",
+    "security",
+    "integrity",
+    "checksum",
+    "hashing",
+    "subresource integrity",
+    "sri",
+    "sri hash",
+    "sri string",
+    "sri generator",
+    "html"
+  ],
+  "author": {
+    "name": "Kat Marchán",
+    "email": "kzm@sykosomatic.org",
+    "twitter": "maybekatz"
+  },
+  "license": "ISC",
+  "dependencies": {
+    "minipass": "^3.1.1"
+  },
+  "devDependencies": {
+    "standard": "^16.0.3",
+    "standard-version": "^9.1.0",
+    "tap": "^14.10.6"
+  },
+  "engines": {
+    "node": ">= 8"
+  }
+}
-- 
cgit v1.2.3