fix: Resolve TypeScript errors

Signed-off-by: Hermes Agent <hermes@nosuchhost>
2026-06-16 09:01:21 -04:00
parent 89bc5e8c15
commit 6bc05a76b0
6687 changed files with 1541509 additions and 0 deletions
--- a/client/node_modules/level-codec/.travis.yml
+++ b/client/node_modules/level-codec/.travis.yml
@@ -0,0 +1,11 @@
+language: node_js
+
+node_js:
+  - 6
+  - 8
+  - 10
+
+after_success: npm run coverage
+
+notifications:
+  email: false
--- a/client/node_modules/level-codec/CHANGELOG.md
+++ b/client/node_modules/level-codec/CHANGELOG.md
@@ -0,0 +1,293 @@
+# Changelog
+
+_**If you are upgrading:** please see [`UPGRADING.md`](UPGRADING.md)._
+
+## [9.0.2] - 2020-06-26
+
+### Changed
+
+- Upgrade `hallmark` devDependency from `^0.1.0` to `^2.0.0` ([#53](https://github.com/Level/codec/issues/53), [#56](https://github.com/Level/codec/issues/56)) ([**@vweevers**](https://github.com/vweevers))
+- Upgrade `standard` devDependency from `^12.0.0` to `^14.0.0` ([#52](https://github.com/Level/codec/issues/52), [#55](https://github.com/Level/codec/issues/55)) ([**@vweevers**](https://github.com/vweevers))
+- Upgrade `nyc` devDependency from `^13.2.0` to `^14.0.0` ([#50](https://github.com/Level/codec/issues/50))  ([**@vweevers**](https://github.com/vweevers))
+
+### Fixed
+
+- Add `buffer` dependency for browsers ([#58](https://github.com/Level/codec/issues/58)) ([**@hugomrdias**](https://github.com/hugomrdias))
+
+## [9.0.1] - 2019-04-01
+
+### Changed
+
+- Upgrade `standard` devDependency from `^11.0.1` to `^12.0.0` ([#38](https://github.com/Level/codec/issues/38)) ([**@ralphtheninja**](https://github.com/ralphtheninja))
+- Update description in README and `package.json` ([#47](https://github.com/Level/codec/issues/47)) ([**@vweevers**](https://github.com/vweevers))
+- Apply common project tweaks ([#39](https://github.com/Level/codec/issues/39), [#40](https://github.com/Level/codec/issues/40), [#41](https://github.com/Level/codec/issues/41)) ([**@vweevers**](https://github.com/vweevers))
+- Tweak copyright year for less maintenance ([`79d2d02`](https://github.com/Level/codec/commit/79d2d02)) ([**@ralphtheninja**](https://github.com/ralphtheninja))
+
+### Added
+
+- Add `nyc` and `coveralls` ([#36](https://github.com/Level/codec/issues/36), [#44](https://github.com/Level/codec/issues/44)) ([**@ralphtheninja**](https://github.com/ralphtheninja), [**@vweevers**](https://github.com/vweevers))
+- Add `CHANGELOG.md` and `UPGRADING.md` ([#47](https://github.com/Level/codec/issues/47)) ([**@vweevers**](https://github.com/vweevers))
+
+### Removed
+
+- Remove node 9 from travis ([`ffe3f92`](https://github.com/Level/codec/commit/ffe3f92)) ([**@ralphtheninja**](https://github.com/ralphtheninja))
+- Remove experimental typings ([`1cfd23f`](https://github.com/Level/codec/commit/1cfd23f)) ([**@ralphtheninja**](https://github.com/ralphtheninja))
+
+### Fixed
+
+- Fix subtests by adding `t.plan()` ([#46](https://github.com/Level/codec/issues/46)) ([**@vweevers**](https://github.com/vweevers))
+
+## [9.0.0] - 2018-05-12
+
+### Changed
+
+- Update README ([#31](https://github.com/Level/codec/issues/31)) ([**@ralphtheninja**](https://github.com/ralphtheninja))
+
+### Added
+
+- Add `standard` ([#29](https://github.com/Level/codec/issues/29)) ([**@ralphtheninja**](https://github.com/ralphtheninja))
+- Add node 9 and 10 ([`9476e58`](https://github.com/Level/codec/commit/9476e58)) ([**@ralphtheninja**](https://github.com/ralphtheninja))
+
+### Removed
+
+- Drop node 0.12, 4, 5 and 7 ([`9476e58`](https://github.com/Level/codec/commit/9476e58), [#32](https://github.com/Level/codec/issues/32)) ([**@ralphtheninja**](https://github.com/ralphtheninja))
+
+### Fixed
+
+- Fix constructor to work without `new` ([#30](https://github.com/Level/codec/issues/30)) ([**@ralphtheninja**](https://github.com/ralphtheninja))
+
+## [8.0.0] - 2017-10-21
+
+### Changed
+
+- Revert "fix utf-8 encoding returning buffers" ([#23](https://github.com/Level/codec/issues/23)) ([**@ralphtheninja**](https://github.com/ralphtheninja))
+
+### Added
+
+- Add badges to `README` and stylize "levelup" ([#22](https://github.com/Level/codec/issues/22)) ([**@vweevers**](https://github.com/vweevers))
+- Document encodings and their format in greater detail ([#22](https://github.com/Level/codec/issues/22)) ([**@vweevers**](https://github.com/vweevers))
+
+## [7.1.0] - 2017-09-12
+
+### Changed
+
+- Update copyright year from 2015 to 2017 ([`aceb6ff`](https://github.com/Level/codec/commit/aceb6ff)) ([**@ralphtheninja**](https://github.com/ralphtheninja))
+
+### Added
+
+- Add basic typings ([#18](https://github.com/Level/codec/issues/18)) ([**@MeirionHughes**](https://github.com/MeirionHughes))
+- Add node 4, 5, 6, 7 and 8 ([`5c00a1c`](https://github.com/Level/codec/commit/5c00a1c)) ([**@ralphtheninja**](https://github.com/ralphtheninja))
+
+### Removed
+
+- Drop node 0.10 and iojs ([`5c00a1c`](https://github.com/Level/codec/commit/5c00a1c)) ([**@ralphtheninja**](https://github.com/ralphtheninja))
+
+## [7.0.1] - 2017-08-14
+
+### Added
+
+- Add Greenkeeper ([#17](https://github.com/Level/codec/issues/17)) ([**@ralphtheninja**](https://github.com/ralphtheninja))
+
+### Fixed
+
+- Use `identity` function consistently ([#14](https://github.com/Level/codec/issues/14)) ([**@dcousens**](https://github.com/dcousens))
+
+## [7.0.0] - 2017-01-26
+
+### Fixed
+
+- Fix utf-8 encoding returning buffers ([#12](https://github.com/Level/codec/issues/12)) ([**@juliangruber**](https://github.com/juliangruber))
+
+## [6.2.0] - 2016-02-24
+
+### Changed
+
+- Rename "id" encoding to "none", add "id" alias ([#10](https://github.com/Level/codec/issues/10)) ([**@juliangruber**](https://github.com/juliangruber))
+- Upgrade `tape` devDependency ([#9](https://github.com/Level/codec/issues/9)) ([**@ralphtheninja**](https://github.com/ralphtheninja))
+
+### Added
+
+- Document available encodings ([#10](https://github.com/Level/codec/issues/10)) ([**@juliangruber**](https://github.com/juliangruber))
+
+## [6.1.0] - 2015-10-21
+
+### Added
+
+- Fallback to legacy `encoding` option if `valueEncoding` is not provided ([#8](https://github.com/Level/codec/issues/8)) ([**@dominictarr**](https://github.com/dominictarr))
+
+## [6.0.0] - 2015-05-04
+
+### Changed
+
+- Replace `createDecodeStream()` with `createStreamDecoder()` ([#6](https://github.com/Level/codec/issues/6)) ([**@juliangruber**](https://github.com/juliangruber))
+
+## [5.5.0] - 2015-04-17
+
+### Added
+
+- Add `createDecodeStream()` ([#5](https://github.com/Level/codec/issues/5)) ([**@juliangruber**](https://github.com/juliangruber))
+
+## [5.4.0] - 2015-04-17
+
+### Changed
+
+- Simplify `encodeLtgt()` ([`24f3817`](https://github.com/Level/codec/commit/24f3817)) ([**@juliangruber**](https://github.com/juliangruber))
+
+## [5.3.0] - 2015-04-17
+
+### Added
+
+- Add `encodeLtgt()` ([#4](https://github.com/Level/codec/issues/4)) ([**@juliangruber**](https://github.com/juliangruber))
+
+## [5.2.0] - 2015-03-24
+
+### Changed
+
+- Make all options optional ([`4f942eb`](https://github.com/Level/codec/commit/4f942eb)) ([**@juliangruber**](https://github.com/juliangruber))
+
+## [5.1.0] - 2015-03-24
+
+### Changed
+
+- Make member options optional ([`0c98ccb`](https://github.com/Level/codec/commit/0c98ccb)) ([**@juliangruber**](https://github.com/juliangruber))
+
+## [5.0.0] - 2015-03-24
+
+**Historical Note** 4.3.0 was meant to be a major release.
+
+## [4.3.0] - 2015-03-24
+
+### Changed
+
+- Rewrite ([`37f103e`](https://github.com/Level/codec/commit/37f103e), [`054fb3f`](https://github.com/Level/codec/commit/054fb3f), [`f510a90`](https://github.com/Level/codec/commit/f510a90)) ([**@juliangruber**](https://github.com/juliangruber))
+
+### Added
+
+- Add [**@ralphtheninja**](https://github.com/ralphtheninja) to contributors ([`dd2b9a0`](https://github.com/Level/codec/commit/dd2b9a0)) ([**@juliangruber**](https://github.com/juliangruber))
+- Add travis and licensing ([#1](https://github.com/Level/codec/issues/1)) ([**@ralphtheninja**](https://github.com/ralphtheninja))
+
+## [4.2.0] - 2015-03-19
+
+### Fixed
+
+- Keep batch `.prefix` for `level-sublevel` ([`f706482`](https://github.com/Level/codec/commit/f706482)) ([**@juliangruber**](https://github.com/juliangruber))
+
+## [4.1.0] - 2015-03-19
+
+### Fixed
+
+- Set `batch` encodings to binary if `{key,value}AsBuffer` is true ([`bcf6feb`](https://github.com/Level/codec/commit/bcf6feb)) ([**@juliangruber**](https://github.com/juliangruber))
+
+## [4.0.1] - 2015-03-19
+
+### Fixed
+
+- Skip falsy objects in `walk` ([`270ea17`](https://github.com/Level/codec/commit/270ea17)) ([**@juliangruber**](https://github.com/juliangruber))
+
+## [4.0.0] - 2015-03-19
+
+### Removed
+
+- Remove default encoding ([`28a63b2`](https://github.com/Level/codec/commit/28a63b2)) ([**@juliangruber**](https://github.com/juliangruber))
+
+## [3.1.0] - 2015-03-19
+
+### Added
+
+- Add experimental `Codec` class ([`8a189f4`](https://github.com/Level/codec/commit/8a189f4)) ([**@juliangruber**](https://github.com/juliangruber))
+
+## [3.0.0] - 2015-03-18
+
+### Removed
+
+- Remove `encoding` option in favor of `keyEncoding` and `valueEncoding` ([`9fed84d`](https://github.com/Level/codec/commit/9fed84d)) ([**@juliangruber**](https://github.com/juliangruber))
+
+## [2.0.1] - 2015-03-18
+
+### Fixed
+
+- Fix `encoding` option to only be an alias for `valueEncoding` ([`b4de4d1`](https://github.com/Level/codec/commit/b4de4d1)) ([**@juliangruber**](https://github.com/juliangruber))
+
+## [2.0.0] - 2015-03-18
+
+### Changed
+
+- Remove side effects from `batch()` ([`bedaa26`](https://github.com/Level/codec/commit/bedaa26), [`6f5b373`](https://github.com/Level/codec/commit/6f5b373), [`abef01b`](https://github.com/Level/codec/commit/abef01b)) ([**@juliangruber**](https://github.com/juliangruber))
+
+## [1.2.1] - 2015-03-18
+
+### Fixed
+
+- Fix `require` statements for `{key,value}AsBuffer()` ([`71bf7a5`](https://github.com/Level/codec/commit/71bf7a5)) ([**@juliangruber**](https://github.com/juliangruber))
+
+## [1.2.0] - 2015-03-18
+
+### Added
+
+- Add `{key,value}AsBuffer()` ([`796a540`](https://github.com/Level/codec/commit/796a540)) ([**@juliangruber**](https://github.com/juliangruber))
+
+## [1.1.0] - 2015-03-18
+
+### Added
+
+- Add `decode{Key,Value}` ([`029fbd7`](https://github.com/Level/codec/commit/029fbd7)) ([**@juliangruber**](https://github.com/juliangruber))
+
+## 1.0.1 - 2015-03-18
+
+:seedling: Initial release.
+
+[9.0.2]: https://github.com/Level/codec/compare/v9.0.1...v9.0.2
+
+[9.0.1]: https://github.com/Level/codec/compare/v9.0.0...v9.0.1
+
+[9.0.0]: https://github.com/Level/codec/compare/v8.0.0...v9.0.0
+
+[8.0.0]: https://github.com/Level/codec/compare/v7.1.0...v8.0.0
+
+[7.1.0]: https://github.com/Level/codec/compare/v7.0.1...v7.1.0
+
+[7.0.1]: https://github.com/Level/codec/compare/v7.0.0...v7.0.1
+
+[7.0.0]: https://github.com/Level/codec/compare/v6.2.0...v7.0.0
+
+[6.2.0]: https://github.com/Level/codec/compare/v6.1.0...v6.2.0
+
+[6.1.0]: https://github.com/Level/codec/compare/v6.0.0...v6.1.0
+
+[6.0.0]: https://github.com/Level/codec/compare/v5.5.0...v6.0.0
+
+[5.5.0]: https://github.com/Level/codec/compare/v5.4.0...v5.5.0
+
+[5.4.0]: https://github.com/Level/codec/compare/v5.3.0...v5.4.0
+
+[5.3.0]: https://github.com/Level/codec/compare/v5.2.0...v5.3.0
+
+[5.2.0]: https://github.com/Level/codec/compare/v5.1.0...v5.2.0
+
+[5.1.0]: https://github.com/Level/codec/compare/v5.0.0...v5.1.0
+
+[5.0.0]: https://github.com/Level/codec/compare/v4.3.0...v5.0.0
+
+[4.3.0]: https://github.com/Level/codec/compare/v4.2.0...v4.3.0
+
+[4.2.0]: https://github.com/Level/codec/compare/v4.1.0...v4.2.0
+
+[4.1.0]: https://github.com/Level/codec/compare/v4.0.1...v4.1.0
+
+[4.0.1]: https://github.com/Level/codec/compare/v4.0.0...v4.0.1
+
+[4.0.0]: https://github.com/Level/codec/compare/v3.1.0...v4.0.0
+
+[3.1.0]: https://github.com/Level/codec/compare/v3.0.0...v3.1.0
+
+[3.0.0]: https://github.com/Level/codec/compare/v2.0.1...v3.0.0
+
+[2.0.1]: https://github.com/Level/codec/compare/v2.0.0...v2.0.1
+
+[2.0.0]: https://github.com/Level/codec/compare/v1.2.1...v2.0.0
+
+[1.2.1]: https://github.com/Level/codec/compare/v1.2.0...v1.2.1
+
+[1.2.0]: https://github.com/Level/codec/compare/v1.1.0...v1.2.0
+
+[1.1.0]: https://github.com/Level/codec/compare/v1.0.1...v1.1.0
--- a/client/node_modules/level-codec/CONTRIBUTORS.md
+++ b/client/node_modules/level-codec/CONTRIBUTORS.md
@@ -0,0 +1,11 @@
+# Contributors
+
+| Name                 | GitHub                                                 | Social                                                        |
+| :------------------- | :----------------------------------------------------- | :------------------------------------------------------------ |
+| **Julian Gruber**    | [**@juliangruber**](https://github.com/juliangruber)   | [**@juliangruber@twitter**](https://twitter.com/juliangruber) |
+| **Lars-Magnus Skog** | [**@ralphtheninja**](https://github.com/ralphtheninja) | [**@ralph@social.weho.st**](https://social.weho.st/@ralph)    |
+| **Vincent Weevers**  | [**@vweevers**](https://github.com/vweevers)           | [**@vweevers@twitter**](https://twitter.com/vweevers)         |
+| **Dominic Tarr**     | [**@dominictarr**](https://github.com/dominictarr)     | [**@dominictarr@twitter**](https://twitter.com/dominictarr)   |
+| **Daniel Cousens**   | [**@dcousens**](https://github.com/dcousens)           |                                                               |
+| **Hugo Dias**        |                                                        |                                                               |
+| **Meirion Hughes**   | [**@MeirionHughes**](https://github.com/MeirionHughes) |                                                               |
--- a/client/node_modules/level-codec/LICENSE.md
+++ b/client/node_modules/level-codec/LICENSE.md
@@ -0,0 +1,21 @@
+# The MIT License (MIT)
+
+**Copyright © 2012-present [Contributors](CONTRIBUTORS.md).**
+
+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.
--- a/client/node_modules/level-codec/README.md
+++ b/client/node_modules/level-codec/README.md
@@ -0,0 +1,148 @@
+# level-codec
+
+> Encode keys, values and range options, with built-in or custom encodings.
+
+[![level badge][level-badge]](https://github.com/Level/awesome)
+[![npm](https://img.shields.io/npm/v/level-codec.svg?label=&logo=npm)](https://www.npmjs.com/package/level-codec)
+[![Node version](https://img.shields.io/node/v/level-codec.svg)](https://www.npmjs.com/package/level-codec)
+[![Travis](https://img.shields.io/travis/com/Level/codec.svg?logo=travis&label=)](https://travis-ci.com/Level/codec)
+[![npm](https://img.shields.io/npm/dm/level-codec.svg?label=dl)](https://www.npmjs.com/package/level-codec)
+[![Coverage Status](https://coveralls.io/repos/github/Level/codec/badge.svg)](https://coveralls.io/github/Level/codec)
+[![JavaScript Style Guide](https://img.shields.io/badge/code_style-standard-brightgreen.svg)](https://standardjs.com)
+[![Backers on Open Collective](https://opencollective.com/level/backers/badge.svg?color=orange)](#backers)
+[![Sponsors on Open Collective](https://opencollective.com/level/sponsors/badge.svg?color=orange)](#sponsors)
+
+## Usage
+
+**If you are upgrading:** please see [`UPGRADING.md`](UPGRADING.md).
+
+```js
+const Codec = require('level-codec')
+const codec = Codec({ keyEncoding: 'json' })
+const key = codec.encodeKey({ foo: 'bar' })
+console.log(key) // -> '{"foo":"bar"}'
+console.log(codec.decodeKey(key)) // -> { foo: 'bar' }
+```
+
+## API
+
+### `codec = Codec([opts])`
+
+Create a new codec, with a global options object.
+
+### `codec.encodeKey(key[, opts])`
+
+Encode `key` with given `opts`.
+
+### `codec.encodeValue(value[, opts])`
+
+Encode `value` with given `opts`.
+
+### `codec.encodeBatch(batch[, opts])`
+
+Encode `batch` ops with given `opts`.
+
+### `codec.encodeLtgt(ltgt)`
+
+Encode the ltgt values of option object `ltgt`.
+
+### `codec.decodeKey(key[, opts])`
+
+Decode `key` with given `opts`.
+
+### `codec.decodeValue(value[, opts])`
+
+Decode `value` with given `opts`.
+
+### `codec.createStreamDecoder([opts])`
+
+Create a function with signature `(key, value)`, that for each key-value pair returned from a levelup read stream returns the decoded value to be emitted.
+
+### `codec.keyAsBuffer([opts])`
+
+Check whether `opts` and the global `opts` call for a binary key encoding.
+
+### `codec.valueAsBuffer([opts])`
+
+Check whether `opts` and the global `opts` call for a binary value encoding.
+
+### `codec.encodings`
+
+The builtin encodings as object of form
+
+```js
+{
+  [type]: encoding
+}
+```
+
+See below for a list and the format of `encoding`.
+
+## Builtin Encodings
+
+| Type                                                              | Input                        | Stored as        | Output    |
+| :---------------------------------------------------------------- | :--------------------------- | :--------------- | :-------- |
+| `utf8`                                                            | String or Buffer             | String or Buffer | String    |
+| `json`                                                            | Any JSON type                | JSON string      | Input     |
+| `binary`                                                          | Buffer, string or byte array | Buffer           | As stored |
+| `hex`<br>`ascii`<br>`base64`<br>`ucs2`<br>`utf16le`<br>`utf-16le` | String or Buffer             | Buffer           | String    |
+| `none` a.k.a. `id`                                                | Any type (bypass encoding)   | Input\*          | As stored |
+
+<sup>\*</sup> Stores may have their own type coercion. Whether type information is preserved depends on the [`abstract-leveldown`] implementation as well as the underlying storage (`LevelDB`, `IndexedDB`, etc).
+
+## Encoding Format
+
+An encoding is an object of the form:
+
+```js
+{
+  encode: function (data) {
+    return data
+  },
+  decode: function (data) {
+    return data
+  },
+  buffer: Boolean,
+  type: 'example'
+}
+```
+
+All of these properties are required.
+
+The `buffer` boolean tells consumers whether to fetch data as a Buffer, before calling your `decode()` function on that data. If `buffer` is true, it is assumed that `decode()` takes a Buffer. If false, it is assumed that `decode` takes any other type (usually a string).
+
+To explain this in the grand scheme of things, consider a store like [`leveldown`] which has the ability to return either a Buffer or string, both sourced from the same byte array. Wrap this store with [`encoding-down`] and it'll select the most optimal data type based on the `buffer` property of the active encoding. If your `decode()` function needs a string (and the data can legitimately become a UTF8 string), you should set `buffer` to `false`. This avoids the cost of having to convert a Buffer to a string.
+
+The `type` string should be a unique name.
+
+## Contributing
+
+[`Level/codec`](https://github.com/Level/codec) is an **OPEN Open Source Project**. This means that:
+
+> Individuals making significant and valuable contributions are given commit-access to the project to contribute as they see fit. This project is more like an open wiki than a standard guarded open source project.
+
+See the [Contribution Guide](https://github.com/Level/community/blob/master/CONTRIBUTING.md) for more details.
+
+## Donate
+
+To sustain [`Level`](https://github.com/Level) and its activities, become a backer or sponsor on [Open Collective](https://opencollective.com/level). Your logo or avatar will be displayed on our 28+ [GitHub repositories](https://github.com/Level) and [npm](https://www.npmjs.com/) packages. 💖
+
+### Backers
+
+[![Open Collective backers](https://opencollective.com/level/backers.svg?width=890)](https://opencollective.com/level)
+
+### Sponsors
+
+[![Open Collective sponsors](https://opencollective.com/level/sponsors.svg?width=890)](https://opencollective.com/level)
+
+## License
+
+[MIT](LICENSE.md) © 2012-present [Contributors](CONTRIBUTORS.md).
+
+[level-badge]: https://leveljs.org/img/badge.svg
+
+[`encoding-down`]: https://github.com/Level/encoding-down
+
+[`abstract-leveldown`]: https://github.com/Level/abstract-leveldown
+
+[`leveldown`]: https://github.com/Level/leveldown
--- a/client/node_modules/level-codec/UPGRADING.md
+++ b/client/node_modules/level-codec/UPGRADING.md
@@ -0,0 +1,35 @@
+# Upgrade Guide
+
+This document describes breaking changes and how to upgrade. For a complete list of changes including minor and patch releases, please refer to the [changelog](CHANGELOG.md).
+
+## v9
+
+Dropped node 0.12, 4, 5 and 7.
+
+## v8
+
+Previously the "utf8" decoder always returned a string. This was a workaround for `encoding-down` that is no longer needed. The return type now depends on the `asBuffer` option, which is more optimal.
+
+## v7
+
+Dropped node 0.10 and iojs.
+
+## v6
+
+The `createDecodeStream()` method (introduced in the last 5.x version) has been replaced with `createStreamDecoder()`.
+
+## v5
+
+This is a rewrite of both internals and the public API. Please see the README for details.
+
+## v4
+
+Removed default encoding ("utf8"). If you relied on this behavior you must now define it yourself.
+
+## v3
+
+Removed the `encoding` option in favor of `keyEncoding` and `valueEncoding`. Note: it was partially restored in v6.1.0.
+
+## v2
+
+The function signature of `batch()` has changed from `batch(ops, batchOptions, dbOptions)` to `batch(ops, optionObjects)`.
--- a/client/node_modules/level-codec/index.js
+++ b/client/node_modules/level-codec/index.js
@@ -0,0 +1,107 @@
+var encodings = require('./lib/encodings')
+
+module.exports = Codec
+
+function Codec (opts) {
+  if (!(this instanceof Codec)) {
+    return new Codec(opts)
+  }
+  this.opts = opts || {}
+  this.encodings = encodings
+}
+
+Codec.prototype._encoding = function (encoding) {
+  if (typeof encoding === 'string') encoding = encodings[encoding]
+  if (!encoding) encoding = encodings.id
+  return encoding
+}
+
+Codec.prototype._keyEncoding = function (opts, batchOpts) {
+  return this._encoding((batchOpts && batchOpts.keyEncoding) ||
+                        (opts && opts.keyEncoding) ||
+                        this.opts.keyEncoding)
+}
+
+Codec.prototype._valueEncoding = function (opts, batchOpts) {
+  return this._encoding((batchOpts && (batchOpts.valueEncoding || batchOpts.encoding)) ||
+                        (opts && (opts.valueEncoding || opts.encoding)) ||
+                        (this.opts.valueEncoding || this.opts.encoding))
+}
+
+Codec.prototype.encodeKey = function (key, opts, batchOpts) {
+  return this._keyEncoding(opts, batchOpts).encode(key)
+}
+
+Codec.prototype.encodeValue = function (value, opts, batchOpts) {
+  return this._valueEncoding(opts, batchOpts).encode(value)
+}
+
+Codec.prototype.decodeKey = function (key, opts) {
+  return this._keyEncoding(opts).decode(key)
+}
+
+Codec.prototype.decodeValue = function (value, opts) {
+  return this._valueEncoding(opts).decode(value)
+}
+
+Codec.prototype.encodeBatch = function (ops, opts) {
+  var self = this
+
+  return ops.map(function (_op) {
+    var op = {
+      type: _op.type,
+      key: self.encodeKey(_op.key, opts, _op)
+    }
+    if (self.keyAsBuffer(opts, _op)) op.keyEncoding = 'binary'
+    if (_op.prefix) op.prefix = _op.prefix
+    if ('value' in _op) {
+      op.value = self.encodeValue(_op.value, opts, _op)
+      if (self.valueAsBuffer(opts, _op)) op.valueEncoding = 'binary'
+    }
+    return op
+  })
+}
+
+var ltgtKeys = ['lt', 'gt', 'lte', 'gte', 'start', 'end']
+
+Codec.prototype.encodeLtgt = function (ltgt) {
+  var self = this
+  var ret = {}
+  Object.keys(ltgt).forEach(function (key) {
+    ret[key] = ltgtKeys.indexOf(key) > -1
+      ? self.encodeKey(ltgt[key], ltgt)
+      : ltgt[key]
+  })
+  return ret
+}
+
+Codec.prototype.createStreamDecoder = function (opts) {
+  var self = this
+
+  if (opts.keys && opts.values) {
+    return function (key, value) {
+      return {
+        key: self.decodeKey(key, opts),
+        value: self.decodeValue(value, opts)
+      }
+    }
+  } else if (opts.keys) {
+    return function (key) {
+      return self.decodeKey(key, opts)
+    }
+  } else if (opts.values) {
+    return function (_, value) {
+      return self.decodeValue(value, opts)
+    }
+  } else {
+    return function () {}
+  }
+}
+
+Codec.prototype.keyAsBuffer = function (opts) {
+  return this._keyEncoding(opts).buffer
+}
+
+Codec.prototype.valueAsBuffer = function (opts) {
+  return this._valueEncoding(opts).buffer
+}
--- a/client/node_modules/level-codec/lib/encodings.js
+++ b/client/node_modules/level-codec/lib/encodings.js
@@ -0,0 +1,66 @@
+var Buffer = require('buffer').Buffer
+
+exports.utf8 = exports['utf-8'] = {
+  encode: function (data) {
+    return isBinary(data) ? data : String(data)
+  },
+  decode: identity,
+  buffer: false,
+  type: 'utf8'
+}
+
+exports.json = {
+  encode: JSON.stringify,
+  decode: JSON.parse,
+  buffer: false,
+  type: 'json'
+}
+
+exports.binary = {
+  encode: function (data) {
+    return isBinary(data) ? data : Buffer.from(data)
+  },
+  decode: identity,
+  buffer: true,
+  type: 'binary'
+}
+
+exports.none = {
+  encode: identity,
+  decode: identity,
+  buffer: false,
+  type: 'id'
+}
+
+exports.id = exports.none
+
+var bufferEncodings = [
+  'hex',
+  'ascii',
+  'base64',
+  'ucs2',
+  'ucs-2',
+  'utf16le',
+  'utf-16le'
+]
+
+bufferEncodings.forEach(function (type) {
+  exports[type] = {
+    encode: function (data) {
+      return isBinary(data) ? data : Buffer.from(data, type)
+    },
+    decode: function (buffer) {
+      return buffer.toString(type)
+    },
+    buffer: true,
+    type: type
+  }
+})
+
+function identity (value) {
+  return value
+}
+
+function isBinary (data) {
+  return data === undefined || data === null || Buffer.isBuffer(data)
+}
--- a/client/node_modules/level-codec/package.json
+++ b/client/node_modules/level-codec/package.json
@@ -0,0 +1,37 @@
+{
+  "name": "level-codec",
+  "version": "9.0.2",
+  "description": "Encode keys, values and range options, with built-in or custom encodings",
+  "license": "MIT",
+  "main": "index.js",
+  "scripts": {
+    "test": "standard && hallmark && nyc tape test/*.js",
+    "coverage": "nyc report --reporter=text-lcov | coveralls",
+    "hallmark": "hallmark --fix",
+    "dependency-check": "dependency-check . test/*.js",
+    "prepublishOnly": "npm run dependency-check"
+  },
+  "dependencies": {
+    "buffer": "^5.6.0"
+  },
+  "devDependencies": {
+    "coveralls": "^3.0.2",
+    "dependency-check": "^3.3.0",
+    "hallmark": "^2.0.0",
+    "level-community": "^3.0.0",
+    "nyc": "^14.0.0",
+    "standard": "^14.0.0",
+    "tape": "^4.10.0"
+  },
+  "hallmark": {
+    "community": "level-community"
+  },
+  "repository": "Level/codec",
+  "homepage": "https://github.com/Level/codec",
+  "keywords": [
+    "level"
+  ],
+  "engines": {
+    "node": ">=6"
+  }
+}
--- a/client/node_modules/level-codec/test/as-buffer.js
+++ b/client/node_modules/level-codec/test/as-buffer.js
@@ -0,0 +1,18 @@
+var test = require('tape')
+var Codec = require('..')
+
+test('key as buffer', function (t) {
+  var codec = new Codec({ keyEncoding: 'hex' })
+  t.ok(codec.keyAsBuffer({}))
+  t.ok(codec.keyAsBuffer())
+  t.notOk(codec.keyAsBuffer({ keyEncoding: 'utf8' }))
+  t.end()
+})
+
+test('value as buffer', function (t) {
+  var codec = new Codec({ valueEncoding: 'hex' })
+  t.ok(codec.valueAsBuffer({}))
+  t.ok(codec.valueAsBuffer())
+  t.notOk(codec.valueAsBuffer({ valueEncoding: 'utf8' }))
+  t.end()
+})
--- a/client/node_modules/level-codec/test/batch.js
+++ b/client/node_modules/level-codec/test/batch.js
@@ -0,0 +1,54 @@
+var test = require('tape')
+var Codec = require('..')
+
+test('batch', function (t) {
+  var codec = new Codec({})
+  var ops = [
+    { type: 'put', key: 'string', value: 'string', valueEncoding: 'utf8' },
+    { type: 'put', key: 'json', value: {} }
+  ]
+  var opsSerialized = JSON.stringify(ops)
+
+  var encoded = codec.encodeBatch(ops, { valueEncoding: 'json' })
+
+  t.equal(opsSerialized, JSON.stringify(ops), 'ops not changed')
+
+  t.deepEqual(encoded, [
+    { type: 'put', key: 'string', value: 'string' },
+    { type: 'put', key: 'json', value: '{}' }
+  ])
+
+  encoded = codec.encodeBatch(ops)
+  t.deepEqual(encoded, [
+    { type: 'put', key: 'string', value: 'string' },
+    { type: 'put', key: 'json', value: {} }
+  ])
+
+  t.end()
+})
+
+test('batch - legacy', function (t) {
+  var codec = new Codec({})
+  var ops = [
+    { type: 'put', key: 'string', value: 'string', encoding: 'utf8' },
+    { type: 'put', key: 'json', value: {} }
+  ]
+  var opsSerialized = JSON.stringify(ops)
+
+  var encoded = codec.encodeBatch(ops, { encoding: 'json' })
+
+  t.equal(opsSerialized, JSON.stringify(ops), 'ops not changed')
+
+  t.deepEqual(encoded, [
+    { type: 'put', key: 'string', value: 'string' },
+    { type: 'put', key: 'json', value: '{}' }
+  ])
+
+  encoded = codec.encodeBatch(ops)
+  t.deepEqual(encoded, [
+    { type: 'put', key: 'string', value: 'string' },
+    { type: 'put', key: 'json', value: {} }
+  ])
+
+  t.end()
+})
--- a/client/node_modules/level-codec/test/codec.js
+++ b/client/node_modules/level-codec/test/codec.js
@@ -0,0 +1,18 @@
+var test = require('tape')
+var Codec = require('..')
+
+test('codec', function (t) {
+  var codec = new Codec({ keyEncoding: 'hex' })
+  t.ok(codec.keyAsBuffer())
+  codec = new Codec()
+  t.notOk(codec.keyAsBuffer())
+  t.end()
+})
+
+test('codec, new not needed', function (t) {
+  var codec = Codec({ keyEncoding: 'hex' })
+  t.ok(codec.keyAsBuffer())
+  codec = Codec()
+  t.notOk(codec.keyAsBuffer())
+  t.end()
+})
--- a/client/node_modules/level-codec/test/decoder.js
+++ b/client/node_modules/level-codec/test/decoder.js
@@ -0,0 +1,74 @@
+var test = require('tape')
+var Codec = require('..')
+
+test('createStreamDecoder', function (t) {
+  var codec = new Codec({ keyEncoding: 'hex' })
+
+  t.plan(3)
+
+  t.test('keys and values', function (t) {
+    var decoder = codec.createStreamDecoder({
+      valueEncoding: 'json',
+      keys: true,
+      values: true
+    })
+    t.deepEqual(decoder(Buffer.from('hey'), '"you"'), {
+      key: '686579',
+      value: 'you'
+    })
+    t.end()
+  })
+
+  t.test('keys', function (t) {
+    var decoder = codec.createStreamDecoder({
+      keys: true
+    })
+    t.equal(decoder(Buffer.from('hey')), '686579')
+    t.end()
+  })
+
+  t.test('values', function (t) {
+    var decoder = codec.createStreamDecoder({
+      valueEncoding: 'hex',
+      values: true
+    })
+    t.equal(decoder(null, Buffer.from('hey')), '686579')
+    t.end()
+  })
+})
+
+test('createStreamDecoder - legacy', function (t) {
+  var codec = new Codec({ keyEncoding: 'hex' })
+
+  t.plan(3)
+
+  t.test('keys and values', function (t) {
+    var decoder = codec.createStreamDecoder({
+      encoding: 'json',
+      keys: true,
+      values: true
+    })
+    t.deepEqual(decoder(Buffer.from('hey'), '"you"'), {
+      key: '686579',
+      value: 'you'
+    })
+    t.end()
+  })
+
+  t.test('keys', function (t) {
+    var decoder = codec.createStreamDecoder({
+      keys: true
+    })
+    t.equal(decoder(Buffer.from('hey')), '686579')
+    t.end()
+  })
+
+  t.test('values', function (t) {
+    var decoder = codec.createStreamDecoder({
+      encoding: 'hex',
+      values: true
+    })
+    t.equal(decoder(null, Buffer.from('hey')), '686579')
+    t.end()
+  })
+})
--- a/client/node_modules/level-codec/test/kv.js
+++ b/client/node_modules/level-codec/test/kv.js
@@ -0,0 +1,109 @@
+var test = require('tape')
+var Codec = require('..')
+
+test('encode key', function (t) {
+  var codec = new Codec({ keyEncoding: 'hex' })
+
+  var buf = codec.encodeKey('686579', {})
+  t.equal(buf.toString(), 'hey')
+
+  buf = codec.encodeKey('686579')
+  t.equal(buf.toString(), 'hey')
+
+  buf = codec.encodeKey('686579', {
+    keyEncoding: 'binary'
+  })
+  t.equal(buf.toString(), '686579')
+
+  buf = codec.encodeKey({ foo: 'bar' }, {
+    keyEncoding: 'none'
+  })
+  t.deepEqual(buf, { foo: 'bar' })
+
+  t.end()
+})
+
+test('encode value', function (t) {
+  var codec = new Codec({ valueEncoding: 'hex' })
+
+  var buf = codec.encodeValue('686579', {})
+  t.equal(buf.toString(), 'hey')
+
+  buf = codec.encodeValue('686579')
+  t.equal(buf.toString(), 'hey')
+
+  buf = codec.encodeValue('686579', {
+    valueEncoding: 'binary'
+  })
+  t.equal(buf.toString(), '686579')
+
+  t.end()
+})
+
+test('decode key', function (t) {
+  var codec = new Codec({ keyEncoding: 'hex' })
+
+  var buf = codec.decodeKey(Buffer.from('hey'), {})
+  t.equal(buf, '686579')
+
+  buf = codec.decodeKey(Buffer.from('hey'))
+  t.equal(buf, '686579')
+
+  buf = codec.decodeKey(Buffer.from('hey'), {
+    keyEncoding: 'binary'
+  })
+  t.equal(buf.toString(), 'hey')
+
+  t.end()
+})
+
+test('decode value', function (t) {
+  var codec = new Codec({ valueEncoding: 'hex' })
+
+  var buf = codec.decodeValue(Buffer.from('hey'), {})
+  t.equal(buf, '686579')
+
+  buf = codec.decodeValue(Buffer.from('hey'))
+  t.equal(buf, '686579')
+
+  buf = codec.decodeValue(Buffer.from('hey'), {
+    valueEncoding: 'binary'
+  })
+  t.equal(buf.toString(), 'hey')
+
+  t.end()
+})
+
+test('encode value - legacy', function (t) {
+  var codec = new Codec({ encoding: 'hex' })
+
+  var buf = codec.encodeValue('686579', {})
+  t.equal(buf.toString(), 'hey')
+
+  buf = codec.encodeValue('686579')
+  t.equal(buf.toString(), 'hey')
+
+  buf = codec.encodeValue('686579', {
+    encoding: 'binary'
+  })
+  t.equal(buf.toString(), '686579')
+
+  t.end()
+})
+
+test('decode value - legacy', function (t) {
+  var codec = new Codec({ encoding: 'hex' })
+
+  var buf = codec.decodeValue(Buffer.from('hey'), {})
+  t.equal(buf, '686579')
+
+  buf = codec.decodeValue(Buffer.from('hey'))
+  t.equal(buf, '686579')
+
+  buf = codec.decodeValue(Buffer.from('hey'), {
+    encoding: 'binary'
+  })
+  t.equal(buf.toString(), 'hey')
+
+  t.end()
+})
--- a/client/node_modules/level-codec/test/ltgt.js
+++ b/client/node_modules/level-codec/test/ltgt.js
@@ -0,0 +1,25 @@
+var test = require('tape')
+var Codec = require('..')
+
+test('encode ltgt', function (t) {
+  var codec = new Codec({ keyEncoding: 'hex' })
+
+  var ltgt = {
+    start: '686579',
+    lte: '686579'
+  }
+  var encoded = codec.encodeLtgt(ltgt)
+  t.equal(encoded.start.toString(), 'hey')
+  t.equal(encoded.lte.toString(), 'hey')
+
+  ltgt = {
+    start: '686579',
+    lte: '686579',
+    keyEncoding: 'json'
+  }
+  encoded = codec.encodeLtgt(ltgt)
+  t.equal(encoded.start, '"686579"')
+  t.equal(encoded.lte, '"686579"')
+
+  t.end()
+})