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Export and Import IndexedDB Database

Export / Import IndexedDB <---> Blob

This module extends 'dexie' module with new methods for importing / exporting databases to / from blobs.

Install

npm install dexie
npm install dexie-export-import

Usage

Here's the basic usage. There's a lot you can do by supplying optional [options] arguments. The available options are described later on in this README (See Typescript interfaces below).

NOTE: Typescript users using dexie@2.x will get compilation errors if using the static import method Dexie.import().

import Dexie from "dexie";
import "dexie-export-import";

//
// Import from Blob or File to Dexie instance:
//
const db = await Dexie.import(blob, [options]);

//
// Export to Blob
//
const blob = await db.export([options]);

//
// Import from Blob or File to existing Dexie instance
//
await db.import(blob, [options]);

Sample

Here's a working sample on CodePen. It uses downloadjs to deliver the blob as a "file download" to the user. For receiving an import file, it uses a drop area where you can drop your JSON file. Click the Console tab in the bottom to see what progressCallbacks receive.

Even though this sample doesn't show it, blobs can also be sent or retrieved to/from a server, using the fetch API.

Features

Export of IndexedDB Database to JSON Blob.
Import from Blob back to IndexedDB Database.
An import Blob can be retrieved from an URL (using fetch()) or from a user-input file (dropped or browsed to).
An export Blob can be either given end-user to be stored in Downloaded Files, or be send to a server over HTTP(S) using fetch().
Chunk-wise / Streaming - does not read the entire DB into RAM
Progress callback (typically for showing progress bar)
Optional filter allows to import/export subset of data
Support for all structured clonable exotic types (Date, ArrayBuffer, Blob, etc) except CryptoKeys (which by design cannot be exported)
Atomic - import / export within one database transaction (optional)
Export speed: Using getAll() in chunks rather than openCursor().
Import speed: Using bulkPut() in chunks rather than put().
Can well be run from a Web Worker (better speed + doesn't lock GUI).
Can also export IndexedDB databases that was not created with Dexie.

Compatibility

Product	Supported versions
dexie	^2.0.4 or ^3.0.0-alpha.5
Safari	^10.1
IE	11
Edge	any version
Chrome	any version
FF	any version

Similar Libraries

indexeddb-export-import

Much smaller in size, but also much lighter than dexie-export-import.

Indexeddb-export-import can be better choice if:

your data contains no Dates, ArrayBuffers, TypedArrays or Blobs (only objects, strings, numbers, booleans and arrays).
your database is small enough to fit in RAM on your target devices.

Dexie-export-import was build to scale when exporting large databases without consuming much RAM. It does also support importing/exporting exotic types.

Interface

Importing this module will extend Dexie and Dexie.prototype as follows.

Even though this is conceptually a Dexie.js addon, there is no addon instance.

Extended interface is done into Dexie and Dexie.prototype as a side effect when

importing the module.

//
// Extend Dexie interface (typescript-wise)
//
declare module 'dexie' {
  // Extend methods on db
  interface Dexie {
    export(options?: ExportOptions): Promise<Blob>;
    import(blob: Blob, options?: ImportOptions): Promise<void>;
  }
  interface DexieConstructor {
    import(blob: Blob, options?: StaticImportOptions): Promise<Dexie>;
  }
}

StaticImportOptions and ImportOptions

These are the interfaces of the options optional arguments to Dexie.import() and Dexie.prototype.import(). All options are optional and defaults to undefined (falsy).

export interface StaticImportOptions {
  noTransaction?: boolean;
  chunkSizeBytes?: number; // Default: DEFAULT_KILOBYTES_PER_CHUNK ( 1MB )
  filter?: (table: string, value: any, key?: any) => boolean;
  progressCallback?: (progress: ImportProgress) => boolean;
}

export interface ImportOptions extends StaticImportOptions {
  acceptMissingTables?: boolean;
  acceptVersionDiff?: boolean;
  acceptNameDiff?: boolean;
  acceptChangedPrimaryKey?: boolean;
  overwriteValues?: boolean;
  clearTablesBeforeImport?: boolean;
  noTransaction?: boolean;
  chunkSizeBytes?: number; // Default: DEFAULT_KILOBYTES_PER_CHUNK ( 1MB )
  filter?: (table: string, value: any, key?: any) => boolean;
  progressCallback?: (progress: ImportProgress) => boolean;
}

ImportProgress

This is the interface sent to the progressCallback.

export interface ImportProgress {
  totalTables: number;
  completedTables: number;
  totalRows: number;
  completedRows: number;
  done: boolean;
}

ExportOptions

This is the interface of the options optional arguments to Dexie.prototype.export(). All options are optional and defaults to undefined (falsy).

export interface ExportOptions {
  noTransaction?: boolean;
  numRowsPerChunk?: number;
  prettyJson?: boolean;
  filter?: (table: string, value: any, key?: any) => boolean;
  progressCallback?: (progress: ExportProgress) => boolean;
}

ExportProgress

This is the interface sent to the ExportOptions.progressCallback.

export interface ExportProgress {
  totalTables: number;
  completedTables: number;
  totalRows: number;
  completedRows: number;
  done: boolean;
}

Defaults

These are the default chunk sizes used when not specified in the options object. We allow quite large chunks, but still not that large (1MB RAM is not much even for a small device).

const DEFAULT_KILOBYTES_PER_CHUNK = 1024; // When importing blob
const DEFAULT_ROWS_PER_CHUNK = 2000; // When exporting db

JSON Format

The JSON format is described in the Typescript interface below. This JSON format is streamable as it is generated

in a streaming fashion, and imported also using a streaming fashion. Therefore, it is important that the data come

last in the file.

export interface DexieExportJsonStructure {
  formatName: 'dexie';
  formatVersion: 1;
  data: {
    databaseName: string;
    databaseVersion: number;
    tables: Array<{
      name: string;
      schema: string; // '++id,name,age'
      rowCount: number;
    }>;
    data: Array<{ // This property must be last (for streaming purpose)
      tableName: string;
      inbound: boolean;
      rows: any[]; // This property must be last (for streaming purpose)
    }>;
  }
}

Example JSON File

{
  "formatName": "dexie",
  "formatVersion": 1,
  "data": {
    "databaseName": "dexie-export-import-basic-tests",
    "databaseVersion": 1,
    "tables": [
      {
        "name": "outbound",
        "schema": "",
        "rowCount": 2
      },
      {
        "name": "inbound",
        "schema": "++id",
        "rowCount": 3
      }
    ],
    "data": [{
      "tableName": "outbound",
      "inbound": false,
      "rows": [
        [
          1,
          {
            "foo": "bar"
          }
        ],
        [
          2,
          {
            "bar": "foo"
          }
        ]
      ]
    },{
      "tableName": "inbound",
      "inbound": true,
      "rows": [
        {
          "id": 1,
          "date": 1,
          "fullBlob": {
            "type": "",
            "data": "AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8gISIjJCUmJygpKissLS4vMDEyMzQ1Njc4OTo7PD0+P0BBQkNERUZHSElKS0xNTk9QUVJTVFVWV1hZWltcXV5fYGFiY2RlZmdoaWprbG1ub3BxcnN0dXZ3eHl6e3x9fn+AgYKDhIWGh4iJiouMjY6PkJGSk5SVlpeYmZqbnJ2en6ChoqOkpaanqKmqq6ytrq+wsbKztLW2t7i5uru8vb6/wMHCw8TFxsfIycrLzM3Oz9DR0tPU1dbX2Nna29zd3t/g4eLj5OXm5+jp6uvs7e7v8PHy8/T19vf4+fr7/P3+/w=="
          },
          "binary": {
            "buffer": "AQID",
            "byteOffset": 0,
            "length": 3
          },
          "text": "foo",
          "bool": false,
          "$types": {
            "date": "date",
            "fullBlob": "blob2",
            "binary": "uint8array2",
            "binary.buffer": "arraybuffer"
          }
        },
        {
          "id": 2,
          "foo": "bar"
        },
        {
          "id": 3,
          "bar": "foo"
        }
      ]
    }]
  }

Exporting IndexedDB Databases that wasn't generated with Dexie

As Dexie can dynamically open non-Dexie IndexedDB databases, this is not an issue.

Sample provided here:

import Dexie from 'dexie';
import 'dexie-export-import';

async function exportDatabase(databaseName) {
  const db = await new Dexie(databaseName).open();
  const blob = await db.export();
  return blob;
}

async function importDatabase(file) {
  const db = await Dexie.import(file);
  return db.backendDB();
}

Background / Why

This feature has been asked for a lot:

My simple answer initially was this:

function export(db) {
    return db.transaction('r', db.tables, ()=>{
        return Promise.all(
            db.tables.map(table => table.toArray()
                .then(rows => ({table: table.name, rows: rows})));
    });
}

function import(data, db) {
    return db.transaction('rw', db.tables, () => {
        return Promise.all(data.map (t =>
            db.table(t.table).clear()
              .then(()=>db.table(t.table).bulkAdd(t.rows)));
    });
}

Looks simple!

But:

The whole database has to fit in RAM. Can be issue on small devices.
If using JSON.stringify() / JSON.parse() on the data, we won't support exotic types (Dates, Blobs, ArrayBuffers, etc)
Not possible to show a progress while importing.

This addon solves these issues, and some more, with the help of some libraries.

Libraries Used

To accomplish a streamable export/import, and allow exotic types, I use the libraries listed below. Note that these libraries are listed as devDependencies because they are bundles using rollupjs - so there's no real dependency from the library user persective.

typeson and typeson-registry

These modules enables something similar as JSON.stringify() / JSON.parse() for exotic or custom types.

clarinet

This module allow to read JSON in a streaming fashion

Streaming JSON

I must admit that I had to do some research before I understood how to accomplish streaming JSON from client-side Javascript (both reading / writing). It is really not obvious that this would even be possible. Looking at the Blob interface, it does not provide any way of either reading or writing in a streamable fashion.

What I found though (after some googling) was that it is indeed possible to do that based on the current DOM platform (including IE11 !).

Reading JSON in Chunks

A File or Blob represents something that can lie on a disk file and not yet be in RAM. So how do we read the first 100 bytes from a Blob without reading it all?

const firstPart = blob.slice(0,100);

Ok, and in the next step we use a FileReader to really read this sliced Blob into memory.

const first100Chars = await readBlob(firstPart);

function readBlob(blob: Blob): Promise<string> {
  return new Promise((resolve, reject) => {
    const reader = new FileReader();
    reader.onabort = ev => reject(new Error("file read aborted"));
    reader.onerror = ev => reject((ev.target as any).error);
    reader.onload = ev => resolve((ev.target as any).result);
    reader.readAsText(blob);
  });
}

Voila!

But! How can we keep transactions alive when calling this non-indexedDB async call?

I use two different solutions for this:

If we are in a Worker, I use new FileReaderSync() instead of new FileReader().
If in the main thread, I use Dexie.waitFor() to while reading this short elapsed chunk, keeping the transaction alive still.

Ok, fine, but how do we parse the chunk then? Cannot use JSON.parse(firstPart) because it will most defenitely be incomplete.

Clarinet to the rescue. This library can read JSON and callback whenever JSON tokens come in.

Writing JSON in Chunks

Writing JSON is solved more easily. As the BlobBuilder interface was deprecated from the DOM, I firstly found this task impossible. But after digging around, I found that also this SHOULD be possible if browers implement the Blob interface correctly.

Blobs can be constructeed from an array of other Blobs. This is the key.

Let's say we generate 1000 Blobs of 1MB each on a device with 512 MB RAM. If the browser does its job well, it will allow the first 200 blobs or so to reside in RAM. But then, it should start putting the remanding blobs onto temporary files.
We put all these 1000 blobs into an array and generate a final Blob from that array.

And that's pretty much it.

The following NPM package may be included in this product:

dexie@3.0.3

This package contains the following license and notice below:

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distributed under the License is distributed on an "AS IS" BASIS,

WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

See the License for the specific language governing permissions and

limitations under the License.

The following NPM package may be included in this product:

dompurify@2.2.6

This package contains the following license and notice below:

DOMPurify

DOMPurify is free software; you can redistribute it and/or modify it under the

terms of either:

a) the Apache License Version 2.0, or

b) the Mozilla Public License Version 2.0

Licensed under the Apache License, Version 2.0 (the "License");

you may not use this file except in compliance with the License.

You may obtain a copy of the License at

<http://www.apache.org/licenses/LICENSE-2.0>

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

Mozilla Public License, version 2.0

Definitions

1.1. “Contributor”

 means each individual or legal entity that creates, contributes to the
 creation of, or owns Covered Software.

1.2. “Contributor Version”

 means the combination of the Contributions of others (if any) used by a
 Contributor and that particular Contributor’s Contribution.

1.3. “Contribution”

 means Covered Software of a particular Contributor.

1.4. “Covered Software”

 means Source Code Form to which the initial Contributor has attached the
 notice in Exhibit A, the Executable Form of such Source Code Form, and
 Modifications of such Source Code Form, in each case including portions
 thereof.

1.5. “Incompatible With Secondary Licenses”

 means

 a. that the initial Contributor has attached the notice described in
    Exhibit B to the Covered Software; or

 b. that the Covered Software was made available under the terms of version
    1.1 or earlier of the License, but not also under the terms of a
    Secondary License.

1.6. “Executable Form”

 means any form of the work other than Source Code Form.

1.7. “Larger Work”

 means a work that combines Covered Software with other material, in a separate
 file or files, that is not Covered Software.

1.8. “License”

 means this document.

1.9. “Licensable”

 means having the right to grant, to the maximum extent possible, whether at the
 time of the initial grant or subsequently, any and all of the rights conveyed by
 this License.

1.10. “Modifications”

 means any of the following:

 a. any file in Source Code Form that results from an addition to, deletion
    from, or modification of the contents of Covered Software; or

 b. any new file in Source Code Form that contains any Covered Software.

1.11. “Patent Claims” of a Contributor

  means any patent claim(s), including without limitation, method, process,
  and apparatus claims, in any patent Licensable by such Contributor that
  would be infringed, but for the grant of the License, by the making,
  using, selling, offering for sale, having made, import, or transfer of
  either its Contributions or its Contributor Version.

1.12. “Secondary License”

  means either the GNU General Public License, Version 2.0, the GNU Lesser
  General Public License, Version 2.1, the GNU Affero General Public
  License, Version 3.0, or any later versions of those licenses.

1.13. “Source Code Form”

  means the form of the work preferred for making modifications.

1.14. “You” (or “Your”)

  means an individual or a legal entity exercising rights under this
  License. For legal entities, “You” includes any entity that controls, is
  controlled by, or is under common control with You. For purposes of this
  definition, “control” means (a) the power, direct or indirect, to cause
  the direction or management of such entity, whether by contract or
  otherwise, or (b) ownership of more than fifty percent (50%) of the
  outstanding shares or beneficial ownership of such entity.

License Grants and Conditions

2.1. Grants

 Each Contributor hereby grants You a world-wide, royalty-free,
 non-exclusive license:

 a. under intellectual property rights (other than patent or trademark)
    Licensable by such Contributor to use, reproduce, make available,
    modify, display, perform, distribute, and otherwise exploit its
    Contributions, either on an unmodified basis, with Modifications, or as
    part of a Larger Work; and

 b. under Patent Claims of such Contributor to make, use, sell, offer for
    sale, have made, import, and otherwise transfer either its Contributions
    or its Contributor Version.

2.2. Effective Date

 The licenses granted in Section 2.1 with respect to any Contribution become
 effective for each Contribution on the date the Contributor first distributes
 such Contribution.

2.3. Limitations on Grant Scope

 The licenses granted in this Section 2 are the only rights granted under this
 License. No additional rights or licenses will be implied from the distribution
 or licensing of Covered Software under this License. Notwithstanding Section
 2.1(b) above, no patent license is granted by a Contributor:

 a. for any code that a Contributor has removed from Covered Software; or

 b. for infringements caused by: (i) Your and any other third party’s
    modifications of Covered Software, or (ii) the combination of its
    Contributions with other software (except as part of its Contributor
    Version); or

 c. under Patent Claims infringed by Covered Software in the absence of its
    Contributions.

 This License does not grant any rights in the trademarks, service marks, or
 logos of any Contributor (except as may be necessary to comply with the
 notice requirements in Section 3.4).

2.4. Subsequent Licenses

 No Contributor makes additional grants as a result of Your choice to
 distribute the Covered Software under a subsequent version of this License
 (see Section 10.2) or under the terms of a Secondary License (if permitted
 under the terms of Section 3.3).

2.5. Representation

 Each Contributor represents that the Contributor believes its Contributions
 are its original creation(s) or it has sufficient rights to grant the
 rights to its Contributions conveyed by this License.

2.6. Fair Use

 This License is not intended to limit any rights You have under applicable
 copyright doctrines of fair use, fair dealing, or other equivalents.

2.7. Conditions

 Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
 Section 2.1.

Responsibilities

3.1. Distribution of Source Form

 All distribution of Covered Software in Source Code Form, including any
 Modifications that You create or to which You contribute, must be under the
 terms of this License. You must inform recipients that the Source Code Form
 of the Covered Software is governed by the terms of this License, and how
 they can obtain a copy of this License. You may not attempt to alter or
 restrict the recipients’ rights in the Source Code Form.

3.2. Distribution of Executable Form

 If You distribute Covered Software in Executable Form then:

 a. such Covered Software must also be made available in Source Code Form,
    as described in Section 3.1, and You must inform recipients of the
    Executable Form how they can obtain a copy of such Source Code Form by
    reasonable means in a timely manner, at a charge no more than the cost
    of distribution to the recipient; and

 b. You may distribute such Executable Form under the terms of this License,
    or sublicense it under different terms, provided that the license for
    the Executable Form does not attempt to limit or alter the recipients’
    rights in the Source Code Form under this License.

3.3. Distribution of a Larger Work

 You may create and distribute a Larger Work under terms of Your choice,
 provided that You also comply with the requirements of this License for the
 Covered Software. If the Larger Work is a combination of Covered Software
 with a work governed by one or more Secondary Licenses, and the Covered
 Software is not Incompatible With Secondary Licenses, this License permits
 You to additionally distribute such Covered Software under the terms of
 such Secondary License(s), so that the recipient of the Larger Work may, at
 their option, further distribute the Covered Software under the terms of
 either this License or such Secondary License(s).

3.4. Notices

 You may not remove or alter the substance of any license notices (including
 copyright notices, patent notices, disclaimers of warranty, or limitations
 of liability) contained within the Source Code Form of the Covered
 Software, except that You may alter any license notices to the extent
 required to remedy known factual inaccuracies.

3.5. Application of Additional Terms

 You may choose to offer, and to charge a fee for, warranty, support,
 indemnity or liability obligations to one or more recipients of Covered
 Software. However, You may do so only on Your own behalf, and not on behalf
 of any Contributor. You must make it absolutely clear that any such
 warranty, support, indemnity, or liability obligation is offered by You
 alone, and You hereby agree to indemnify every Contributor for any
 liability incurred by such Contributor as a result of warranty, support,
 indemnity or liability terms You offer. You may include additional
 disclaimers of warranty and limitations of liability specific to any
 jurisdiction.

Inability to Comply Due to Statute or Regulation
If it is impossible for You to comply with any of the terms of this License
with respect to some or all of the Covered Software due to statute, judicial
order, or regulation then You must: (a) comply with the terms of this License
to the maximum extent possible; and (b) describe the limitations and the code
they affect. Such description must be placed in a text file included with all
distributions of the Covered Software under this License. Except to the
extent prohibited by statute or regulation, such description must be
sufficiently detailed for a recipient of ordinary skill to be able to
understand it.
Termination

5.1. The rights granted under this License will terminate automatically if You

 fail to comply with any of its terms. However, if You become compliant,
 then the rights granted under this License from a particular Contributor
 are reinstated (a) provisionally, unless and until such Contributor
 explicitly and finally terminates Your grants, and (b) on an ongoing basis,
 if such Contributor fails to notify You of the non-compliance by some
 reasonable means prior to 60 days after You have come back into compliance.
 Moreover, Your grants from a particular Contributor are reinstated on an
 ongoing basis if such Contributor notifies You of the non-compliance by
 some reasonable means, this is the first time You have received notice of
 non-compliance with this License from such Contributor, and You become
 compliant prior to 30 days after Your receipt of the notice.

5.2. If You initiate litigation against any entity by asserting a patent

 infringement claim (excluding declaratory judgment actions, counter-claims,
 and cross-claims) alleging that a Contributor Version directly or
 indirectly infringes any patent, then the rights granted to You by any and
 all Contributors for the Covered Software under Section 2.1 of this License
 shall terminate.

5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user

 license agreements (excluding distributors and resellers) which have been
 validly granted by You or Your distributors under this License prior to
 termination shall survive termination.

Disclaimer of Warranty
Covered Software is provided under this License on an “as is” basis, without
warranty of any kind, either expressed, implied, or statutory, including,
without limitation, warranties that the Covered Software is free of defects,
merchantable, fit for a particular purpose or non-infringing. The entire
risk as to the quality and performance of the Covered Software is with You.
Should any Covered Software prove defective in any respect, You (not any
Contributor) assume the cost of any necessary servicing, repair, or
correction. This disclaimer of warranty constitutes an essential part of this
License. No use of any Covered Software is authorized under this License
except under this disclaimer.
Limitation of Liability
Under no circumstances and under no legal theory, whether tort (including
negligence), contract, or otherwise, shall any Contributor, or anyone who
distributes Covered Software as permitted above, be liable to You for any
direct, indirect, special, incidental, or consequential damages of any
character including, without limitation, damages for lost profits, loss of
goodwill, work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses, even if such party shall have been
informed of the possibility of such damages. This limitation of liability
shall not apply to liability for death or personal injury resulting from such
party’s negligence to the extent applicable law prohibits such limitation.
Some jurisdictions do not allow the exclusion or limitation of incidental or
consequential damages, so this exclusion and limitation may not apply to You.
Litigation
Any litigation relating to this License may be brought only in the courts of
a jurisdiction where the defendant maintains its principal place of business
and such litigation shall be governed by laws of that jurisdiction, without
reference to its conflict-of-law provisions. Nothing in this Section shall
prevent a party’s ability to bring cross-claims or counter-claims.
Miscellaneous
This License represents the complete agreement concerning the subject matter
hereof. If any provision of this License is held to be unenforceable, such
provision shall be reformed only to the extent necessary to make it
enforceable. Any law or regulation which provides that the language of a
contract shall be construed against the drafter shall not be used to construe
this License against a Contributor.

Versions of the License

10.1. New Versions

  Mozilla Foundation is the license steward. Except as provided in Section
  10.3, no one other than the license steward has the right to modify or
  publish new versions of this License. Each version will be given a
  distinguishing version number.

10.2. Effect of New Versions

  You may distribute the Covered Software under the terms of the version of
  the License under which You originally received the Covered Software, or
  under the terms of any subsequent version published by the license
  steward.

10.3. Modified Versions

  If you create software not governed by this License, and you want to
  create a new license for such software, you may create and use a modified
  version of this License if you rename the license and remove any
  references to the name of the license steward (except to note that such
  modified license differs from this License).

10.4. Distributing Source Code Form that is Incompatible With Secondary Licenses

  If You choose to distribute Source Code Form that is Incompatible With
  Secondary Licenses under the terms of this version of the License, the
  notice described in Exhibit B of this License must be attached.

Exhibit A - Source Code Form License Notice

  This Source Code Form is subject to the
  terms of the Mozilla Public License, v.
  2.0. If a copy of the MPL was not
  distributed with this file, You can
  obtain one at
  <http://mozilla.org/MPL/2.0/.>

If it is not possible or desirable to put the notice in a particular file, then

You may include the notice in a location (such as a LICENSE file in a relevant

directory) where a recipient would be likely to look for such a notice.

You may add additional accurate notices of copyright ownership.

Exhibit B - “Incompatible With Secondary Licenses” Notice

  This Source Code Form is “Incompatible
  With Secondary Licenses”, as defined by
  the Mozilla Public License, v. 2.0.

The following NPM package may be included in this product:

eventemitter3@2.0.3

This package contains the following license and notice below:

The MIT License (MIT)

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.

The following NPM package may be included in this product:

expr-eval@2.0.2

This package contains the following license and notice below:

The MIT License (MIT)

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.

The following NPM package may be included in this product:

extend@3.0.2

This package contains the following license and notice below:

The MIT License (MIT)

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.

The following NPM package may be included in this product:

fast-diff@1.1.2

This package contains the following license and notice below:

Fast Diff [

](https://travis-ci.org/jhchen/fast-diff)

This is a simplified import of the excellent diff-match-patch library by Neil Fraser into the Node.js environment. The match and patch parts are removed, as well as all the extra diff options. What remains is incredibly fast diffing between two strings.

The diff function is an implementation of "An O(ND) Difference Algorithm and its Variations" (Myers, 1986) with the suggested divide and conquer strategy along with several optimizations Neil added.

var diff = require('fast-diff');

var good = 'Good dog';
var bad = 'Bad dog';

var result = diff(good, bad);
// [[-1, "Goo"], [1, "Ba"], [0, "d dog"]]

// Respect suggested edit location (cursor position), added in v1.1
diff('aaa', 'aaaa', 1)
// [[0, "a"], [1, "a"], [0, "aa"]]

// For convenience
diff.INSERT === 1;
diff.EQUAL === 0;
diff.DELETE === -1;

The following NPM package may be included in this product:

function-bind@1.1.1

This package contains the following license and notice below:

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.

The following NPM package may be included in this product:

glur@1.1.2

This package contains the following license and notice below:

The MIT License (MIT)

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.

The following NPM package may be included in this product:

has-symbols@1.0.1

This package contains the following license and notice below:

MIT License

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.

The following NPM package may be included in this product:

has@1.0.3

This package contains the following license and notice below:

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.

The following NPM package may be included in this product:

idb@4.0.5

This package contains the following license and notice below:

ISC License (ISC)

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 AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR 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.

The following NPM package may be included in this product:

inherits@2.0.4

This package contains the following license and notice below:

The ISC License

Copyright (c) Isaac Z. Schlueter

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 AUTHOR DISCLAIMS ALL WARRANTIES WITH

REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND

FITNESS. IN NO EVENT SHALL THE AUTHOR 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.

The following NPM packages may be included in this product:

is-arguments@1.1.0
is-regex@1.1.2
object-is@1.1.5

These packages each contain the following license and notice below:

The MIT License (MIT)

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.

The following NPM package may be included in this product:

is-date-object@1.0.2

This package contains the following license and notice below:

The MIT License (MIT)

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.

The following NPM package may be included in this product:

mobile-device-detect@0.4.3

This package contains the following license and notice below:

MIT License

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.

The following NPM package may be included in this product:

moment-timezone@0.5.33

This package contains the following license and notice below:

The MIT License (MIT)

Copyright (c) JS Foundation and other contributors

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.

The following NPM package may be included in this product:

moment@2.29.1

This package contains the following license and notice below:

Copyright (c) JS Foundation and other contributors

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.

The following NPM package may be included in this product:

multimath@1.0.3

This package contains the following license and notice below:

(The MIT License)

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

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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.

The following NPM package may be included in this product:

object-assign@4.1.1

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Copyright (c) Sindre Sorhus sindresorhus@gmail.com (http://sindresorhus.com )

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

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furnished to do so, subject to the following conditions:

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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.

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object-keys@1.1.1

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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,

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THE SOFTWARE.

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The following NPM package may be included in this product:

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This package contains the following license and notice below:

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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

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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,

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THE SOFTWARE.

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This package contains the following license and notice below:

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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,

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THE SOFTWARE.

The following NPM package may be included in this product:

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This package contains the following license and notice below:

Redistribution and use in source and binary forms, with or without

modification, are permitted provided that the following conditions

are met:

Redistributions of source code must retain the above copyright

notice, this list of conditions and the following disclaimer.

Redistributions in binary form must reproduce the above copyright

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documentation and/or other materials provided with the distribution.

Neither the name of the copyright holder nor the names of its