Lisensi Sumber Terbuka

MIT License

Copyright (c) 2021 Apideck

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 ISC License

Copyright (c) Isaac Z. Schlueter and Contributors

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.

# 👷 `workerd` for Windows 64-bit, Cloudflare's JavaScript/Wasm Runtime

`workerd` is a JavaScript / Wasm server runtime based on the same code that powers
[Cloudflare Workers](https://workers.dev).

See https://github.com/cloudflare/workerd for details.

Copyright (c) Felix Böhm
All rights reserved.

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 notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

THIS IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS,
EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Several modules are vendored under `./src`, which are used and
distributed according to their respective licenses, each provided
in the same directory as the code.

Everything else is released under the following license.

----

# Blue Oak Model License

Version 1.0.0

## Purpose

This license gives everyone as much permission to work with
this software as possible, while protecting contributors
from liability.

## Acceptance

In order to receive this license, you must agree to its
rules. The rules of this license are both obligations
under that agreement and conditions to your license.
You must not do anything with this software that triggers
a rule that you cannot or will not follow.

## Copyright

Each contributor licenses you to do everything with this
software that would otherwise infringe that contributor's
copyright in it.

## Notices

You must ensure that everyone who gets a copy of
any part of this software from you, with or without
changes, also gets the text of this license or a link to
<https://blueoakcouncil.org/license/1.0.0>.

## Excuse

If anyone notifies you in writing that you have not
complied with [Notices](#notices), you can keep your
license by taking all practical steps to comply within 30
days after the notice. If you do not do so, your license
ends immediately.

## Patent

Each contributor licenses you to do everything with this
software that would otherwise infringe any patent claims
they can license or become able to license.

## Reliability

No contributor can revoke this license.

## No Liability

**_As far as the law allows, this software comes as is,
without any warranty or condition, and no contributor
will be liable to anyone for any damages related to this
software or this license, under any kind of legal claim._**

Copyright (c) 2014, GMO GlobalSign
Copyright (c) 2015-2022, Peculiar Ventures
All rights reserved.

Author 2014-2019, Yury Strozhevsky

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 notice, this
  list of conditions and the following disclaimer in the documentation and/or
  other materials provided with the distribution.

* Neither the name of the copyright holder nor the names of its
  contributors may be used to endorse or promote products derived from
  this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Copyright 2014-2021 Adobe (http://www.adobe.com/), with Reserved Font Name 'Noto Sans'.
Copyright 2014-2021 Google Inc (http://www.google.com/), with Reserved Font Name 'Noto Sans'.

This Font Software is licensed under the SIL Open Font License, Version 1.1.
This license is copied below, and is also available with a FAQ at:
http://scripts.sil.org/OFL


-----------------------------------------------------------
SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
-----------------------------------------------------------

PREAMBLE
The goals of the Open Font License (OFL) are to stimulate worldwide
development of collaborative font projects, to support the font creation
efforts of academic and linguistic communities, and to provide a free and
open framework in which fonts may be shared and improved in partnership
with others.

The OFL allows the licensed fonts to be used, studied, modified and
redistributed freely as long as they are not sold by themselves. The
fonts, including any derivative works, can be bundled, embedded,
redistributed and/or sold with any software provided that any reserved
names are not used by derivative works. The fonts and derivatives,
however, cannot be released under any other type of license. The
requirement for fonts to remain under this license does not apply
to any document created using the fonts or their derivatives.

DEFINITIONS
"Font Software" refers to the set of files released by the Copyright
Holder(s) under this license and clearly marked as such. This may
include source files, build scripts and documentation.

"Reserved Font Name" refers to any names specified as such after the
copyright statement(s).

"Original Version" refers to the collection of Font Software components as
distributed by the Copyright Holder(s).

"Modified Version" refers to any derivative made by adding to, deleting,
or substituting -- in part or in whole -- any of the components of the
Original Version, by changing formats or by porting the Font Software to a
new environment.

"Author" refers to any designer, engineer, programmer, technical
writer or other person who contributed to the Font Software.

PERMISSION & CONDITIONS
Permission is hereby granted, free of charge, to any person obtaining
a copy of the Font Software, to use, study, copy, merge, embed, modify,
redistribute, and sell modified and unmodified copies of the Font
Software, subject to the following conditions:

1) Neither the Font Software nor any of its individual components,
in Original or Modified Versions, may be sold by itself.

2) Original or Modified Versions of the Font Software may be bundled,
redistributed and/or sold with any software, provided that each copy
contains the above copyright notice and this license. These can be
included either as stand-alone text files, human-readable headers or
in the appropriate machine-readable metadata fields within text or
binary files as long as those fields can be easily viewed by the user.

3) No Modified Version of the Font Software may use the Reserved Font
Name(s) unless explicit written permission is granted by the corresponding
Copyright Holder. This restriction only applies to the primary font name as
presented to the users.

4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
Software shall not be used to promote, endorse or advertise any
Modified Version, except to acknowledge the contribution(s) of the
Copyright Holder(s) and the Author(s) or with their explicit written
permission.

5) The Font Software, modified or unmodified, in part or in whole,
must be distributed entirely under this license, and must not be
distributed under any other license. The requirement for fonts to
remain under this license does not apply to any document created
using the Font Software.

TERMINATION
This license becomes null and void if any of the above conditions are
not met.

DISCLAIMER
THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
OTHER DEALINGS IN THE FONT SOFTWARE.

Mozilla Public License Version 2.0
==================================

1. 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.

2. 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.

3. 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.

4. 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.

5. 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.

************************************************************************
* *
* 6. 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. *
* *
************************************************************************

************************************************************************
* *
* 7. 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. *
* *
************************************************************************

8. 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.

9. 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.

10. 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 https://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.

# @cloudflare/kv-asset-handler

[![npm](https://img.shields.io/npm/v/@cloudflare/kv-asset-handler.svg)](https://www.npmjs.com/package/@cloudflare/kv-asset-handler)  
[![Run npm tests](https://github.com/cloudflare/kv-asset-handler/actions/workflows/test.yml/badge.svg)](https://github.com/cloudflare/kv-asset-handler/actions/workflows/test.yml)  
[![Lint Markdown](https://github.com/cloudflare/kv-asset-handler/actions/workflows/lint.yml/badge.svg)](https://github.com/cloudflare/kv-asset-handler/actions/workflows/lint.yml)  

`kv-asset-handler` is an open-source library for managing the retrieval of static assets from [Workers KV](https://developers.cloudflare.com/workers/runtime-apis/kv) inside of a [Cloudflare Workers](https://workers.dev) function. `kv-asset-handler` is designed for use with [Workers Sites](https://developers.cloudflare.com/workers/platform/sites), a feature included in [Wrangler](https://github.com/cloudflare/wrangler), our command-line tool for deploying Workers projects.

`kv-asset-handler` runs as part of a Cloudflare Workers function, so it allows you to customize _how_ and _when_ your static assets are loaded, as well as customize how those assets behave before they're sent to the client.

Most users and sites will not need these customizations, and just want to serve their statically built applications. For that simple use-case, you can check out [Cloudflare Pages](https://pages.cloudflare.com), our batteries-included approach to deploying static sites on Cloudflare's edge network. Workers Sites was designed as a precursor to Cloudflare Pages, so check out Pages if you just want to deploy your static site without any special customizations!

For users who _do_ want to customize their assets, and want to build complex experiences on top of their static assets, `kv-asset-handler` (and the default [Workers Sites template](https://github.com/cloudflare/worker-sites-template), which is provided for use with Wrangler + Workers Sites) allows you to customize caching behavior, headers, and anything else about how your Workers function loads the static assets for your site stored in Workers KV.

The Cloudflare Workers Discord server is an active place where Workers users get help, share feedback, and collaborate on making our platform better. The `#workers` channel in particular is a great place to chat about `kv-asset-handler`, and building cool experiences for your users using these tools! If you have questions, want to share what you're working on, or give feedback, [join us in Discord and say hello](https://discord.cloudflare.com)!

- [Installation](#installation)
- [Usage](#usage)
- [`getAssetFromKV`](#getassetfromkv)
  - [Example](#example)
  * [Return](#return)
  * [Optional Arguments](#optional-arguments)
    - [`mapRequestToAsset`](#maprequesttoasset)
    - [Example](#example-1)
    - [`cacheControl`](#cachecontrol)
      - [`browserTTL`](#browserttl)
      - [`edgeTTL`](#edgettl)
      - [`bypassCache`](#bypasscache)
    - [`ASSET_NAMESPACE` (required for ES Modules)](#asset_namespace-required-for-es-modules)
    - [`ASSET_MANIFEST` (required for ES Modules)](#asset_manifest-required-for-es-modules)
    - [`defaultETag`](#defaultetag-optional)

* [Helper functions](#helper-functions)
  - [`mapRequestToAsset`](#maprequesttoasset-1)
  - [`serveSinglePageApp`](#servesinglepageapp)
* [Cache revalidation and etags](#cache-revalidation-and-etags)

## Installation

Add this package to your `package.json` by running this in the root of your
project's directory:

```
npm i @cloudflare/kv-asset-handler
```

## Usage

This package was designed to work with [Worker Sites](https://workers.cloudflare.com/sites).

## `getAssetFromKV`

getAssetFromKV(Evt) => Promise<Response>

`getAssetFromKV` is an async function that takes an `Evt` object (containing a `Request` and a [`waitUntil`](https://developers.cloudflare.com/workers/runtime-apis/fetch-event#waituntil)) and returns a `Response` object if the request matches an asset in KV, otherwise it will throw a `KVError`.

#### Example

This example checks for the existence of a value in KV, and returns it if it's there, and returns a 404 if it is not. It also serves index.html from `/`.

### Return

`getAssetFromKV` returns a `Promise<Response>` with `Response` being the body of the asset requested.

Known errors to be thrown are:

- MethodNotAllowedError
- NotFoundError
- InternalError

#### ES Modules

```js
import manifestJSON from "__STATIC_CONTENT_MANIFEST";
import {
	getAssetFromKV,
	MethodNotAllowedError,
	NotFoundError,
} from "@cloudflare/kv-asset-handler";

const assetManifest = JSON.parse(manifestJSON);

export default {
	async fetch(request, env, ctx) {
		if (request.url.includes("/docs")) {
			try {
				return await getAssetFromKV(
					{
						request,
						waitUntil(promise) {
							return ctx.waitUntil(promise);
						},
					},
					{
						ASSET_NAMESPACE: env.__STATIC_CONTENT,
						ASSET_MANIFEST: assetManifest,
					}
				);
			} catch (e) {
				if (e instanceof NotFoundError) {
					// ...
				} else if (e instanceof MethodNotAllowedError) {
					// ...
				} else {
					return new Response("An unexpected error occurred", { status: 500 });
				}
			}
		} else return fetch(request);
	},
};
```

#### Service Worker

```js
import {
	getAssetFromKV,
	MethodNotAllowedError,
	NotFoundError,
} from "@cloudflare/kv-asset-handler";

addEventListener("fetch", (event) => {
	event.respondWith(handleEvent(event));
});

async function handleEvent(event) {
	if (event.request.url.includes("/docs")) {
		try {
			return await getAssetFromKV(event);
		} catch (e) {
			if (e instanceof NotFoundError) {
				// ...
			} else if (e instanceof MethodNotAllowedError) {
				// ...
			} else {
				return new Response("An unexpected error occurred", { status: 500 });
			}
		}
	} else return fetch(event.request);
}
```

### Optional Arguments

You can customize the behavior of `getAssetFromKV` by passing the following properties as an object into the second argument.

```
getAssetFromKV(event, { mapRequestToAsset: ... })
```

#### `mapRequestToAsset`

mapRequestToAsset(Request) => Request

Maps the incoming request to the value that will be looked up in Cloudflare's KV

By default, mapRequestToAsset is set to the exported function [`mapRequestToAsset`](#maprequesttoasset-1). This works for most static site generators, but you can customize this behavior by passing your own function as `mapRequestToAsset`. The function should take a `Request` object as its only argument, and return a new `Request` object with an updated path to be looked up in the asset manifest/KV.

For SPA mapping pass in the [`serveSinglePageApp`](#servesinglepageapp) function

#### Example

Strip `/docs` from any incoming request before looking up an asset in Cloudflare's KV.

```js
import { getAssetFromKV, mapRequestToAsset } from '@cloudflare/kv-asset-handler'
...
const customKeyModifier = request => {
  let url = request.url
  //custom key mapping optional
  url = url.replace('/docs', '').replace(/^\/+/, '')
  return mapRequestToAsset(new Request(url, request))
}
let asset = await getAssetFromKV(event, { mapRequestToAsset: customKeyModifier })
```

#### `cacheControl`

type: object

`cacheControl` allows you to configure options for both the Cloudflare Cache accessed by your Worker, and the browser cache headers sent along with your Workers' responses. The default values are as follows:

```javascript
let cacheControl = {
	browserTTL: null, // do not set cache control ttl on responses
	edgeTTL: 2 * 60 * 60 * 24, // 2 days
	bypassCache: false, // do not bypass Cloudflare's cache
};
```

##### `browserTTL`

type: number | null
nullable: true

Sets the `Cache-Control: max-age` header on the response returned from the Worker. By default set to `null` which will not add the header at all.

##### `edgeTTL`

type: number | null
nullable: true

Sets the `Cache-Control: max-age` header on the response used as the edge cache key. By default set to 2 days (`2 * 60 * 60 * 24`). When null will not cache on the edge at all.

##### `bypassCache`

type: boolean

Determines whether to cache requests on Cloudflare's edge cache. By default set to `false` (recommended for production builds). Useful for development when you need to eliminate the cache's effect on testing.

#### `ASSET_NAMESPACE` (required for ES Modules)

type: KV Namespace Binding

The binding name to the KV Namespace populated with key/value entries of files for the Worker to serve. By default, Workers Sites uses a [binding to a Workers KV Namespace](https://developers.cloudflare.com/workers/reference/storage/api/#namespaces) named `__STATIC_CONTENT`.

It is further assumed that this namespace consists of static assets such as HTML, CSS, JavaScript, or image files, keyed off of a relative path that roughly matches the assumed URL pathname of the incoming request.

In ES Modules format, this argument is required, and can be gotten from `env`.

##### ES Module

```js
return getAssetFromKV(
	{
		request,
		waitUntil(promise) {
			return ctx.waitUntil(promise);
		},
	},
	{
		ASSET_NAMESPACE: env.__STATIC_CONTENT,
	}
);
```

##### Service Worker

```
return getAssetFromKV(event, { ASSET_NAMESPACE: MY_NAMESPACE })
```

#### `ASSET_MANIFEST` (required for ES Modules)

type: text blob (JSON formatted) or object

The mapping of requested file path to the key stored on Cloudflare.

Workers Sites with Wrangler bundles up a text blob that maps request paths to content-hashed keys that are generated by Wrangler as a cache-busting measure. If this option/binding is not present, the function will fallback to using the raw pathname to look up your asset in KV. If, for whatever reason, you have rolled your own implementation of this, you can include your own by passing a stringified JSON object where the keys are expected paths, and the values are the expected keys in your KV namespace.

In ES Modules format, this argument is required, and can be imported.

##### ES Module

```js
import manifestJSON from "__STATIC_CONTENT_MANIFEST";
let manifest = JSON.parse(manifestJSON);
manifest["index.html"] = "index.special.html";

return getAssetFromKV(
	{
		request,
		waitUntil(promise) {
			return ctx.waitUntil(promise);
		},
	},
	{
		ASSET_MANIFEST: manifest,
		// ...
	}
);
```

##### Service Worker

```
let assetManifest = { "index.html": "index.special.html" }
return getAssetFromKV(event, { ASSET_MANIFEST: assetManifest })
```

#### `defaultMimeType` (optional)

type: string

This is the mime type that will be used for files with unrecognized or missing extensions. The default value is `'text/plain'`.

If you are serving a static site and would like to use extensionless HTML files instead of index.html files, set this to `'text/html'`.

#### `defaultDocument` (optional)

type: string

This is the default document that will be concatenated for requests ends in `'/'` or without a valid mime type like `'/about'` or `'/about.me'`. The default value is `'index.html'`.

#### `defaultETag` (optional)

type: `'strong' | 'weak'`

This determines the format of the response [ETag header](https://developer.mozilla.org/docs/Web/HTTP/Headers/ETag). If the resource is in the cache, the ETag will always be weakened before being returned.
The default value is `'strong'`.

# Helper functions

## `mapRequestToAsset`

mapRequestToAsset(Request) => Request

The default function for mapping incoming requests to keys in Cloudflare's KV.

Takes any path that ends in `/` or evaluates to an HTML file and appends `index.html` or `/index.html` for lookup in your Workers KV namespace.

## `serveSinglePageApp`

serveSinglePageApp(Request) => Request

A custom handler for mapping requests to a single root: `index.html`. The most common use case is single-page applications - frameworks with in-app routing - such as React Router, VueJS, etc. It takes zero arguments.

```js
import { getAssetFromKV, serveSinglePageApp } from '@cloudflare/kv-asset-handler'
...
let asset = await getAssetFromKV(event, { mapRequestToAsset: serveSinglePageApp })
```

# Cache revalidation and etags

All responses served from cache (including those with `cf-cache-status: MISS`) include an `etag` response header that identifies the version of the resource. The `etag` value is identical to the path key used in the `ASSET_MANIFEST`. It is updated each time an asset changes and looks like this: `etag: <filename>.<hash of file contents>.<extension>` (ex. `etag: index.54321.html`).

Resources served with an `etag` allow browsers to use the `if-none-match` request header to make conditional requests for that resource in the future. This has two major benefits:

- When a request's `if-none-match` value matches the `etag` of the resource in Cloudflare cache, Cloudflare will send a `304 Not Modified` response without a body, saving bandwidth.
- Changes to a file on the server are immediately reflected in the browser - even when the cache control directive `max-age` is unexpired.

#### Disable the `etag`

To turn `etags` **off**, you must bypass cache:

```js
/* Turn etags off */
let cacheControl = {
	bypassCache: true,
};
```

#### Syntax and comparison context

`kv-asset-handler` sets and evaluates etags as [strong validators](https://developer.mozilla.org/en-US/docs/Web/HTTP/Conditional_requests#Strong_validation). To preserve `etag` integrity, the format of the value deviates from the [RFC2616 recommendation to enclose the `etag` with quotation marks](https://tools.ietf.org/html/rfc2616#section-3.11). This is intentional. Cloudflare cache applies the `W/` prefix to all `etags` that use quoted-strings -- a process that converts the `etag` to a "weak validator" when served to a client.

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===============

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GPL version 3
=============

                    GNU GENERAL PUBLIC LICENSE
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 Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
 Everyone is permitted to copy and distribute verbatim copies
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  The "Corresponding Source" for a work in object code form means all
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  2. Basic Permissions.

  All rights granted under this License are granted for the term of
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  You may make, run and propagate covered works that you do not
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  You may convey verbatim copies of the Program's source code as you
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  A separable portion of the object code, whose source code is excluded
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  A "User Product" is either (1) a "consumer product", which means any
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  If you convey an object code work under this section in, or with, or
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  The requirement to provide Installation Information does not include a
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  Corresponding Source conveyed, and Installation Information provided,
in accord with this section must be in a format that is publicly
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  7. Additional Terms.

  "Additional permissions" are terms that supplement the terms of this
License by making exceptions from one or more of its conditions.
Additional permissions that are applicable to the entire Program shall
be treated as though they were included in this License, to the extent
that they are valid under applicable law.  If additional permissions
apply only to part of the Program, that part may be used separately
under those permissions, but the entire Program remains governed by
this License without regard to the additional permissions.

  When you convey a copy of a covered work, you may at your option
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  Notwithstanding any other provision of this License, for material you
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    b) Requiring preservation of specified reasonable legal notices or
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  All other non-permissive additional terms are considered "further
restrictions" within the meaning of section 10.  If the Program as you
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  If you add terms to a covered work in accord with this section, you
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  Additional terms, permissive or non-permissive, may be stated in the
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  8. Termination.

  You may not propagate or modify a covered work except as expressly
provided under this License.  Any attempt otherwise to propagate or
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this License (including any patent licenses granted under the third
paragraph of section 11).

  However, if you cease all violation of this License, then your
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provisionally, unless and until the copyright holder explicitly and
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  Moreover, your license from a particular copyright holder is
reinstated permanently if the copyright holder notifies you of the
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your receipt of the notice.

  Termination of your rights under this section does not terminate the
licenses of parties who have received copies or rights from you under
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reinstated, you do not qualify to receive new licenses for the same
material under section 10.

  9. Acceptance Not Required for Having Copies.

  You are not required to accept this License in order to receive or
run a copy of the Program.  Ancillary propagation of a covered work
occurring solely as a consequence of using peer-to-peer transmission
to receive a copy likewise does not require acceptance.  However,
nothing other than this License grants you permission to propagate or
modify any covered work.  These actions infringe copyright if you do
not accept this License.  Therefore, by modifying or propagating a
covered work, you indicate your acceptance of this License to do so.

  10. Automatic Licensing of Downstream Recipients.

  Each time you convey a covered work, the recipient automatically
receives a license from the original licensors, to run, modify and
propagate that work, subject to this License.  You are not responsible
for enforcing compliance by third parties with this License.

  An "entity transaction" is a transaction transferring control of an
organization, or substantially all assets of one, or subdividing an
organization, or merging organizations.  If propagation of a covered
work results from an entity transaction, each party to that
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the predecessor has it or can get it with reasonable efforts.

  You may not impose any further restrictions on the exercise of the
rights granted or affirmed under this License.  For example, you may
not impose a license fee, royalty, or other charge for exercise of
rights granted under this License, and you may not initiate litigation
(including a cross-claim or counterclaim in a lawsuit) alleging that
any patent claim is infringed by making, using, selling, offering for
sale, or importing the Program or any portion of it.

  11. Patents.

  A "contributor" is a copyright holder who authorizes use under this
License of the Program or a work on which the Program is based.  The
work thus licensed is called the contributor's "contributor version".

  A contributor's "essential patent claims" are all patent claims
owned or controlled by the contributor, whether already acquired or
hereafter acquired, that would be infringed by some manner, permitted
by this License, of making, using, or selling its contributor version,
but do not include claims that would be infringed only as a
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purposes of this definition, "control" includes the right to grant
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this License.

  Each contributor grants you a non-exclusive, worldwide, royalty-free
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  In the following three paragraphs, a "patent license" is any express
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sue for patent infringement).  To "grant" such a patent license to a
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  If you convey a covered work, knowingly relying on a patent license,
and the Corresponding Source of the work is not available for anyone
to copy, free of charge and under the terms of this License, through a
publicly available network server or other readily accessible means,
then you must either (1) cause the Corresponding Source to be so
available, or (2) arrange to deprive yourself of the benefit of the
patent license for this particular work, or (3) arrange, in a manner
consistent with the requirements of this License, to extend the patent
license to downstream recipients.  "Knowingly relying" means you have
actual knowledge that, but for the patent license, your conveying the
covered work in a country, or your recipient's use of the covered work
in a country, would infringe one or more identifiable patents in that
country that you have reason to believe are valid.

  If, pursuant to or in connection with a single transaction or
arrangement, you convey, or propagate by procuring conveyance of, a
covered work, and grant a patent license to some of the parties
receiving the covered work authorizing them to use, propagate, modify
or convey a specific copy of the covered work, then the patent license
you grant is automatically extended to all recipients of the covered
work and works based on it.

  A patent license is "discriminatory" if it does not include within
the scope of its coverage, prohibits the exercise of, or is
conditioned on the non-exercise of one or more of the rights that are
specifically granted under this License.  You may not convey a covered
work if you are a party to an arrangement with a third party that is
in the business of distributing software, under which you make payment
to the third party based on the extent of your activity of conveying
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or that patent license was granted, prior to 28 March 2007.

  Nothing in this License shall be construed as excluding or limiting
any implied license or other defenses to infringement that may
otherwise be available to you under applicable patent law.

  12. No Surrender of Others' Freedom.

  If conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License.  If you cannot convey a
covered work so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you may
not convey it at all.  For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.

  13. Use with the GNU Affero General Public License.

  Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
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section 13, concerning interaction through a network will apply to the
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  14. Revised Versions of this License.

  The Free Software Foundation may publish revised and/or new versions of
the GNU General Public License from time to time.  Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.

  Each version is given a distinguishing version number.  If the
Program specifies that a certain numbered version of the GNU General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation.  If the Program does not specify a version number of the
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by the Free Software Foundation.

  If the Program specifies that a proxy can decide which future
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  Later license versions may give you additional or different
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  15. Disclaimer of Warranty.

  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
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IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
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  16. Limitation of Liability.

  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
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DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.

  17. Interpretation of Sections 15 and 16.

  If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.

                     END OF TERMS AND CONDITIONS

GNU LESSER GENERAL PUBLIC LICENSE
                       Version 3, 29 June 2007

 Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.


  This version of the GNU Lesser General Public License incorporates
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License, supplemented by the additional permissions listed below.

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  As used herein, "this License" refers to version 3 of the GNU Lesser
General Public License, and the "GNU GPL" refers to version 3 of the GNU
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  "The Library" refers to a covered work governed by this License,
other than an Application or a Combined Work as defined below.

  An "Application" is any work that makes use of an interface provided
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  1. Exception to Section 3 of the GNU GPL.

  You may convey a covered work under sections 3 and 4 of this License
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  2. Conveying Modified Versions.

  If you modify a copy of the Library, and, in your modifications, a
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   a) under this License, provided that you make a good faith effort to
   ensure that, in the event an Application does not supply the
   function or data, the facility still operates, and performs
   whatever part of its purpose remains meaningful, or

   b) under the GNU GPL, with none of the additional permissions of
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  3. Object Code Incorporating Material from Library Header Files.

  The object code form of an Application may incorporate material from
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   b) Accompany the object code with a copy of the GNU GPL and this license
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  4. Combined Works.

  You may convey a Combined Work under terms of your choice that,
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   b) Accompany the Combined Work with a copy of the GNU GPL and this license
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   c) For a Combined Work that displays copyright notices during
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   these notices, as well as a reference directing the user to the
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   d) Do one of the following:

       0) Convey the Minimal Corresponding Source under the terms of this
       License, and the Corresponding Application Code in a form
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   e) Provide Installation Information, but only if you would otherwise
   be required to provide such information under section 6 of the
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   Combined Work produced by recombining or relinking the
   Application with a modified version of the Linked Version. (If
   you use option 4d0, the Installation Information must accompany
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   Information in the manner specified by section 6 of the GNU GPL
   for conveying Corresponding Source.)

  5. Combined Libraries.

  You may place library facilities that are a work based on the
Library side by side in a single library together with other library
facilities that are not Applications and are not covered by this
License, and convey such a combined library under terms of your
choice, if you do both of the following:

   a) Accompany the combined library with a copy of the same work based
   on the Library, uncombined with any other library facilities,
   conveyed under the terms of this License.

   b) Give prominent notice with the combined library that part of it
   is a work based on the Library, and explaining where to find the
   accompanying uncombined form of the same work.

  6. Revised Versions of the GNU Lesser General Public License.

  The Free Software Foundation may publish revised and/or new versions
of the GNU Lesser General Public License from time to time. Such new
versions will be similar in spirit to the present version, but may
differ in detail to address new problems or concerns.

  Each version is given a distinguishing version number. If the
Library as you received it specifies that a certain numbered version
of the GNU Lesser General Public License "or any later version"
applies to it, you have the option of following the terms and
conditions either of that published version or of any later version
published by the Free Software Foundation. If the Library as you
received it does not specify a version number of the GNU Lesser
General Public License, you may choose any version of the GNU Lesser
General Public License ever published by the Free Software Foundation.

  If the Library as you received it specifies that a proxy can decide
whether future versions of the GNU Lesser General Public License shall
apply, that proxy's public statement of acceptance of any version is
permanent authorization for you to choose that version for the
Library.

Apache License, Version 2.0

Copyright (c) 2011 Dominic Tarr

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.

The package exports an array of strings. Each string is an identifier
for a license exception under the [Software Package Data Exchange
(SPDX)][SPDX] software license metadata standard.

[SPDX]: https://spdx.org

## Copyright and Licensing

### SPDX

"SPDX" is a federally registered United States trademark of The Linux
Foundation Corporation.

From version 2.0 of the [SPDX] specification:

> Copyright © 2010-2015 Linux Foundation and its Contributors. Licensed
> under the Creative Commons Attribution License 3.0 Unported. All other
> rights are expressly reserved.

The Linux Foundation and the SPDX working groups are good people. Only
they decide what "SPDX" means, as a standard and otherwise. I respect
their work and their rights. You should, too.

### This Package

> I created this package by copying exception identifiers out of the
> SPDX specification. That work was mechanical, routine, and required no
> creativity whatsoever. - Kyle Mitchell, package author

United States users concerned about intellectual property may wish to
discuss the following Supreme Court decisions with their attorneys:

- _Baker v. Selden_, 101 U.S. 99 (1879)

- _Feist Publications, Inc., v. Rural Telephone Service Co._,
  499 U.S. 340 (1991)

The MIT License

Copyright (c) 2015 Kyle E. Mitchell

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.

MIT License

Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (https:/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 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.