更新前端静态网页获取方式，放弃使用后端获取api

frontend/node_modules/js-yaml/CHANGELOG.md

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+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+
+## [3.14.1] - 2020-12-07
+### Security
+- Fix possible code execution in (already unsafe) `.load()` (in &anchor).
+
+
+## [3.14.0] - 2020-05-22
+### Changed
+- Support `safe/loadAll(input, options)` variant of call.
+- CI: drop outdated nodejs versions.
+- Dev deps bump.
+
+### Fixed
+- Quote `=` in plain scalars #519.
+- Check the node type for `!<?>` tag in case user manually specifies it.
+- Verify that there are no null-bytes in input.
+- Fix wrong quote position when writing condensed flow, #526.
+
+
+## [3.13.1] - 2019-04-05
+### Security
+- Fix possible code execution in (already unsafe) `.load()`, #480.
+
+
+## [3.13.0] - 2019-03-20
+### Security
+- Security fix: `safeLoad()` can hang when arrays with nested refs
+  used as key. Now throws exception for nested arrays. #475.
+
+
+## [3.12.2] - 2019-02-26
+### Fixed
+- Fix `noArrayIndent` option for root level, #468.
+
+
+## [3.12.1] - 2019-01-05
+### Added
+- Added `noArrayIndent` option, #432.
+
+
+## [3.12.0] - 2018-06-02
+### Changed
+- Support arrow functions without a block statement, #421.
+
+
+## [3.11.0] - 2018-03-05
+### Added
+- Add arrow functions suport for `!!js/function`.
+
+### Fixed
+- Fix dump in bin/octal/hex formats for negative integers, #399.
+
+
+## [3.10.0] - 2017-09-10
+### Fixed
+- Fix `condenseFlow` output (quote keys for sure, instead of spaces), #371, #370.
+- Dump astrals as codepoints instead of surrogate pair, #368.
+
+
+## [3.9.1] - 2017-07-08
+### Fixed
+- Ensure stack is present for custom errors in node 7.+, #351.
+
+
+## [3.9.0] - 2017-07-08
+### Added
+- Add `condenseFlow` option (to create pretty URL query params), #346.
+
+### Fixed
+- Support array return from safeLoadAll/loadAll, #350.
+
+
+## [3.8.4] - 2017-05-08
+### Fixed
+- Dumper: prevent space after dash for arrays that wrap, #343.
+
+
+## [3.8.3] - 2017-04-05
+### Fixed
+- Should not allow numbers to begin and end with underscore, #335.
+
+
+## [3.8.2] - 2017-03-02
+### Fixed
+- Fix `!!float 123` (integers) parse, #333.
+- Don't allow leading zeros in floats (except 0, 0.xxx).
+- Allow positive exponent without sign in floats.
+
+
+## [3.8.1] - 2017-02-07
+### Changed
+- Maintenance: update browserified build.
+
+
+## [3.8.0] - 2017-02-07
+### Fixed
+- Fix reported position for `duplicated mapping key` errors.
+  Now points to block start instead of block end.
+  (#243, thanks to @shockey).
+
+
+## [3.7.0] - 2016-11-12
+### Added
+- Support polymorphism for tags (#300, thanks to @monken).
+
+### Fixed
+- Fix parsing of quotes followed by newlines (#304, thanks to @dplepage).
+
+
+## [3.6.1] - 2016-05-11
+### Fixed
+- Fix output cut on a pipe, #286.
+
+
+## [3.6.0] - 2016-04-16
+### Fixed
+- Dumper rewrite, fix multiple bugs with trailing `\n`.
+  Big thanks to @aepsilon!
+- Loader: fix leading/trailing newlines in block scalars, @aepsilon.
+
+
+## [3.5.5] - 2016-03-17
+### Fixed
+- Date parse fix: don't allow dates with on digit in month and day, #268.
+
+
+## [3.5.4] - 2016-03-09
+### Added
+- `noCompatMode` for dumper, to disable quoting YAML 1.1 values.
+
+
+## [3.5.3] - 2016-02-11
+### Changed
+- Maintenance release.
+
+
+## [3.5.2] - 2016-01-11
+### Changed
+- Maintenance: missed comma in bower config.
+
+
+## [3.5.1] - 2016-01-11
+### Changed
+- Removed `inherit` dependency, #239.
+- Better browserify workaround for esprima load.
+- Demo rewrite.
+
+
+## [3.5.0] - 2016-01-10
+### Fixed
+- Dumper. Fold strings only, #217.
+- Dumper. `norefs` option, to clone linked objects, #229.
+- Loader. Throw a warning for duplicate keys, #166.
+- Improved browserify support (mark `esprima` & `Buffer` excluded).
+
+
+## [3.4.6] - 2015-11-26
+### Changed
+- Use standalone `inherit` to keep browserified files clear.
+
+
+## [3.4.5] - 2015-11-23
+### Added
+- Added `lineWidth` option to dumper.
+
+
+## [3.4.4] - 2015-11-21
+### Fixed
+- Fixed floats dump (missed dot for scientific format), #220.
+- Allow non-printable characters inside quoted scalars, #192.
+
+
+## [3.4.3] - 2015-10-10
+### Changed
+- Maintenance release - deps bump (esprima, argparse).
+
+
+## [3.4.2] - 2015-09-09
+### Fixed
+- Fixed serialization of duplicated entries in sequences, #205.
+  Thanks to @vogelsgesang.
+
+
+## [3.4.1] - 2015-09-05
+### Fixed
+- Fixed stacktrace handling in generated errors, for browsers (FF/IE).
+
+
+## [3.4.0] - 2015-08-23
+### Changed
+- Don't throw on warnings anymore. Use `onWarning` option to catch.
+- Throw error on unknown tags (was warning before).
+- Reworked internals of error class.
+
+### Fixed
+- Fixed multiline keys dump, #197. Thanks to @tcr.
+- Fixed heading line breaks in some scalars (regression).
+
+
+## [3.3.1] - 2015-05-13
+### Added
+- Added `.sortKeys` dumper option, thanks to @rjmunro.
+
+### Fixed
+- Fixed astral characters support, #191.
+
+
+## [3.3.0] - 2015-04-26
+### Changed
+- Significantly improved long strings formatting in dumper, thanks to @isaacs.
+- Strip BOM if exists.
+
+
+## [3.2.7] - 2015-02-19
+### Changed
+- Maintenance release.
+- Updated dependencies.
+- HISTORY.md -> CHANGELOG.md
+
+
+## [3.2.6] - 2015-02-07
+### Fixed
+- Fixed encoding of UTF-16 surrogate pairs. (e.g. "\U0001F431" CAT FACE).
+- Fixed demo dates dump (#113, thanks to @Hypercubed).
+
+
+## [3.2.5] - 2014-12-28
+### Fixed
+- Fixed resolving of all built-in types on empty nodes.
+- Fixed invalid warning on empty lines within quoted scalars and flow collections.
+- Fixed bug: Tag on an empty node didn't resolve in some cases.
+
+
+## [3.2.4] - 2014-12-19
+### Fixed
+- Fixed resolving of !!null tag on an empty node.
+
+
+## [3.2.3] - 2014-11-08
+### Fixed
+- Implemented dumping of objects with circular and cross references.
+- Partially fixed aliasing of constructed objects. (see issue #141 for details)
+
+
+## [3.2.2] - 2014-09-07
+### Fixed
+- Fixed infinite loop on unindented block scalars.
+- Rewritten base64 encode/decode in binary type, to keep code licence clear.
+
+
+## [3.2.1] - 2014-08-24
+### Fixed
+- Nothig new. Just fix npm publish error.
+
+
+## [3.2.0] - 2014-08-24
+### Added
+- Added input piping support to CLI.
+
+### Fixed
+- Fixed typo, that could cause hand on initial indent (#139).
+
+
+## [3.1.0] - 2014-07-07
+### Changed
+- 1.5x-2x speed boost.
+- Removed deprecated `require('xxx.yml')` support.
+- Significant code cleanup and refactoring.
+- Internal API changed. If you used custom types - see updated examples.
+  Others are not affected.
+- Even if the input string has no trailing line break character,
+  it will be parsed as if it has one.
+- Added benchmark scripts.
+- Moved bower files to /dist folder
+- Bugfixes.
+
+
+## [3.0.2] - 2014-02-27
+### Fixed
+- Fixed bug: "constructor" string parsed as `null`.
+
+
+## [3.0.1] - 2013-12-22
+### Fixed
+- Fixed parsing of literal scalars. (issue #108)
+- Prevented adding unnecessary spaces in object dumps. (issue #68)
+- Fixed dumping of objects with very long (> 1024 in length) keys.
+
+
+## [3.0.0] - 2013-12-16
+### Changed
+- Refactored code. Changed API for custom types.
+- Removed output colors in CLI, dump json by default.
+- Removed big dependencies from browser version (esprima, buffer). Load `esprima` manually, if `!!js/function` needed. `!!bin` now returns Array in browser
+- AMD support.
+- Don't quote dumped strings because of `-` & `?` (if not first char).
+- __Deprecated__ loading yaml files via `require()`, as not recommended
+  behaviour for node.
+
+
+## [2.1.3] - 2013-10-16
+### Fixed
+- Fix wrong loading of empty block scalars.
+
+
+## [2.1.2] - 2013-10-07
+### Fixed
+- Fix unwanted line breaks in folded scalars.
+
+
+## [2.1.1] - 2013-10-02
+### Fixed
+- Dumper now respects deprecated booleans syntax from YAML 1.0/1.1
+- Fixed reader bug in JSON-like sequences/mappings.
+
+
+## [2.1.0] - 2013-06-05
+### Added
+- Add standard YAML schemas: Failsafe (`FAILSAFE_SCHEMA`),
+  JSON (`JSON_SCHEMA`) and Core (`CORE_SCHEMA`).
+- Add `skipInvalid` dumper option.
+
+### Changed
+- Rename `DEFAULT_SCHEMA` to `DEFAULT_FULL_SCHEMA`
+  and `SAFE_SCHEMA` to `DEFAULT_SAFE_SCHEMA`.
+- Use `safeLoad` for `require` extension.
+
+### Fixed
+- Bug fix: export `NIL` constant from the public interface.
+
+
+## [2.0.5] - 2013-04-26
+### Security
+- Close security issue in !!js/function constructor.
+  Big thanks to @nealpoole for security audit.
+
+
+## [2.0.4] - 2013-04-08
+### Changed
+- Updated .npmignore to reduce package size
+
+
+## [2.0.3] - 2013-02-26
+### Fixed
+- Fixed dumping of empty arrays ans objects. ([] and {} instead of null)
+
+
+## [2.0.2] - 2013-02-15
+### Fixed
+- Fixed input validation: tabs are printable characters.
+
+
+## [2.0.1] - 2013-02-09
+### Fixed
+- Fixed error, when options not passed to function cass
+
+
+## [2.0.0] - 2013-02-09
+### Changed
+- Full rewrite. New architecture. Fast one-stage parsing.
+- Changed custom types API.
+- Added YAML dumper.
+
+
+## [1.0.3] - 2012-11-05
+### Fixed
+- Fixed utf-8 files loading.
+
+
+## [1.0.2] - 2012-08-02
+### Fixed
+- Pull out hand-written shims. Use ES5-Shims for old browsers support. See #44.
+- Fix timstamps incorectly parsed in local time when no time part specified.
+
+
+## [1.0.1] - 2012-07-07
+### Fixed
+- Fixes `TypeError: 'undefined' is not an object` under Safari. Thanks Phuong.
+- Fix timestamps incorrectly parsed in local time. Thanks @caolan. Closes #46.
+
+
+## [1.0.0] - 2012-07-01
+### Changed
+- `y`, `yes`, `n`, `no`, `on`, `off` are not converted to Booleans anymore.
+  Fixes #42.
+- `require(filename)` now returns a single document and throws an Error if
+  file contains more than one document.
+- CLI was merged back from js-yaml.bin
+
+
+## [0.3.7] - 2012-02-28
+### Fixed
+- Fix export of `addConstructor()`. Closes #39.
+
+
+## [0.3.6] - 2012-02-22
+### Changed
+- Removed AMD parts - too buggy to use. Need help to rewrite from scratch
+
+### Fixed
+- Removed YUI compressor warning (renamed `double` variable). Closes #40.
+
+
+## [0.3.5] - 2012-01-10
+### Fixed
+- Workagound for .npmignore fuckup under windows. Thanks to airportyh.
+
+
+## [0.3.4] - 2011-12-24
+### Fixed
+- Fixes str[] for oldIEs support.
+- Adds better has change support for browserified demo.
+- improves compact output of Error. Closes #33.
+
+
+## [0.3.3] - 2011-12-20
+### Added
+- adds `compact` stringification of Errors.
+
+### Changed
+- jsyaml executable moved to separate module.
+
+
+## [0.3.2] - 2011-12-16
+### Added
+- Added jsyaml executable.
+- Added !!js/function support. Closes #12.
+
+### Fixed
+- Fixes ug with block style scalars. Closes #26.
+- All sources are passing JSLint now.
+- Fixes bug in Safari. Closes #28.
+- Fixes bug in Opers. Closes #29.
+- Improves browser support. Closes #20.
+
+
+## [0.3.1] - 2011-11-18
+### Added
+- Added AMD support for browserified version.
+- Added permalinks for online demo YAML snippets. Now we have YPaste service, lol.
+- Added !!js/regexp and !!js/undefined types. Partially solves #12.
+
+### Changed
+- Wrapped browserified js-yaml into closure.
+
+### Fixed
+- Fixed the resolvement of non-specific tags. Closes #17.
+- Fixed !!set mapping.
+- Fixed month parse in dates. Closes #19.
+
+
+## [0.3.0] - 2011-11-09
+### Added
+- Added browserified version. Closes #13.
+- Added live demo of browserified version.
+- Ported some of the PyYAML tests. See #14.
+
+### Fixed
+- Removed JS.Class dependency. Closes #3.
+- Fixed timestamp bug when fraction was given.
+
+
+## [0.2.2] - 2011-11-06
+### Fixed
+- Fixed crash on docs without ---. Closes #8.
+- Fixed multiline string parse
+- Fixed tests/comments for using array as key
+
+
+## [0.2.1] - 2011-11-02
+### Fixed
+- Fixed short file read (<4k). Closes #9.
+
+
+## [0.2.0] - 2011-11-02
+### Changed
+- First public release
+
+
+[3.14.1]: https://github.com/nodeca/js-yaml/compare/3.14.0...3.14.1
+[3.14.0]: https://github.com/nodeca/js-yaml/compare/3.13.1...3.14.0
+[3.13.1]: https://github.com/nodeca/js-yaml/compare/3.13.0...3.13.1
+[3.13.0]: https://github.com/nodeca/js-yaml/compare/3.12.2...3.13.0
+[3.12.2]: https://github.com/nodeca/js-yaml/compare/3.12.1...3.12.2
+[3.12.1]: https://github.com/nodeca/js-yaml/compare/3.12.0...3.12.1
+[3.12.0]: https://github.com/nodeca/js-yaml/compare/3.11.0...3.12.0
+[3.11.0]: https://github.com/nodeca/js-yaml/compare/3.10.0...3.11.0
+[3.10.0]: https://github.com/nodeca/js-yaml/compare/3.9.1...3.10.0
+[3.9.1]: https://github.com/nodeca/js-yaml/compare/3.9.0...3.9.1
+[3.9.0]: https://github.com/nodeca/js-yaml/compare/3.8.4...3.9.0
+[3.8.4]: https://github.com/nodeca/js-yaml/compare/3.8.3...3.8.4
+[3.8.3]: https://github.com/nodeca/js-yaml/compare/3.8.2...3.8.3
+[3.8.2]: https://github.com/nodeca/js-yaml/compare/3.8.1...3.8.2
+[3.8.1]: https://github.com/nodeca/js-yaml/compare/3.8.0...3.8.1
+[3.8.0]: https://github.com/nodeca/js-yaml/compare/3.7.0...3.8.0
+[3.7.0]: https://github.com/nodeca/js-yaml/compare/3.6.1...3.7.0
+[3.6.1]: https://github.com/nodeca/js-yaml/compare/3.6.0...3.6.1
+[3.6.0]: https://github.com/nodeca/js-yaml/compare/3.5.5...3.6.0
+[3.5.5]: https://github.com/nodeca/js-yaml/compare/3.5.4...3.5.5
+[3.5.4]: https://github.com/nodeca/js-yaml/compare/3.5.3...3.5.4
+[3.5.3]: https://github.com/nodeca/js-yaml/compare/3.5.2...3.5.3
+[3.5.2]: https://github.com/nodeca/js-yaml/compare/3.5.1...3.5.2
+[3.5.1]: https://github.com/nodeca/js-yaml/compare/3.5.0...3.5.1
+[3.5.0]: https://github.com/nodeca/js-yaml/compare/3.4.6...3.5.0
+[3.4.6]: https://github.com/nodeca/js-yaml/compare/3.4.5...3.4.6
+[3.4.5]: https://github.com/nodeca/js-yaml/compare/3.4.4...3.4.5
+[3.4.4]: https://github.com/nodeca/js-yaml/compare/3.4.3...3.4.4
+[3.4.3]: https://github.com/nodeca/js-yaml/compare/3.4.2...3.4.3
+[3.4.2]: https://github.com/nodeca/js-yaml/compare/3.4.1...3.4.2
+[3.4.1]: https://github.com/nodeca/js-yaml/compare/3.4.0...3.4.1
+[3.4.0]: https://github.com/nodeca/js-yaml/compare/3.3.1...3.4.0
+[3.3.1]: https://github.com/nodeca/js-yaml/compare/3.3.0...3.3.1
+[3.3.0]: https://github.com/nodeca/js-yaml/compare/3.2.7...3.3.0
+[3.2.7]: https://github.com/nodeca/js-yaml/compare/3.2.6...3.2.7
+[3.2.6]: https://github.com/nodeca/js-yaml/compare/3.2.5...3.2.6
+[3.2.5]: https://github.com/nodeca/js-yaml/compare/3.2.4...3.2.5
+[3.2.4]: https://github.com/nodeca/js-yaml/compare/3.2.3...3.2.4
+[3.2.3]: https://github.com/nodeca/js-yaml/compare/3.2.2...3.2.3
+[3.2.2]: https://github.com/nodeca/js-yaml/compare/3.2.1...3.2.2
+[3.2.1]: https://github.com/nodeca/js-yaml/compare/3.2.0...3.2.1
+[3.2.0]: https://github.com/nodeca/js-yaml/compare/3.1.0...3.2.0
+[3.1.0]: https://github.com/nodeca/js-yaml/compare/3.0.2...3.1.0
+[3.0.2]: https://github.com/nodeca/js-yaml/compare/3.0.1...3.0.2
+[3.0.1]: https://github.com/nodeca/js-yaml/compare/3.0.0...3.0.1
+[3.0.0]: https://github.com/nodeca/js-yaml/compare/2.1.3...3.0.0
+[2.1.3]: https://github.com/nodeca/js-yaml/compare/2.1.2...2.1.3
+[2.1.2]: https://github.com/nodeca/js-yaml/compare/2.1.1...2.1.2
+[2.1.1]: https://github.com/nodeca/js-yaml/compare/2.1.0...2.1.1
+[2.1.0]: https://github.com/nodeca/js-yaml/compare/2.0.5...2.1.0
+[2.0.5]: https://github.com/nodeca/js-yaml/compare/2.0.4...2.0.5
+[2.0.4]: https://github.com/nodeca/js-yaml/compare/2.0.3...2.0.4
+[2.0.3]: https://github.com/nodeca/js-yaml/compare/2.0.2...2.0.3
+[2.0.2]: https://github.com/nodeca/js-yaml/compare/2.0.1...2.0.2
+[2.0.1]: https://github.com/nodeca/js-yaml/compare/2.0.0...2.0.1
+[2.0.0]: https://github.com/nodeca/js-yaml/compare/1.0.3...2.0.0
+[1.0.3]: https://github.com/nodeca/js-yaml/compare/1.0.2...1.0.3
+[1.0.2]: https://github.com/nodeca/js-yaml/compare/1.0.1...1.0.2
+[1.0.1]: https://github.com/nodeca/js-yaml/compare/1.0.0...1.0.1
+[1.0.0]: https://github.com/nodeca/js-yaml/compare/0.3.7...1.0.0
+[0.3.7]: https://github.com/nodeca/js-yaml/compare/0.3.6...0.3.7
+[0.3.6]: https://github.com/nodeca/js-yaml/compare/0.3.5...0.3.6
+[0.3.5]: https://github.com/nodeca/js-yaml/compare/0.3.4...0.3.5
+[0.3.4]: https://github.com/nodeca/js-yaml/compare/0.3.3...0.3.4
+[0.3.3]: https://github.com/nodeca/js-yaml/compare/0.3.2...0.3.3
+[0.3.2]: https://github.com/nodeca/js-yaml/compare/0.3.1...0.3.2
+[0.3.1]: https://github.com/nodeca/js-yaml/compare/0.3.0...0.3.1
+[0.3.0]: https://github.com/nodeca/js-yaml/compare/0.2.2...0.3.0
+[0.2.2]: https://github.com/nodeca/js-yaml/compare/0.2.1...0.2.2
+[0.2.1]: https://github.com/nodeca/js-yaml/compare/0.2.0...0.2.1
+[0.2.0]: https://github.com/nodeca/js-yaml/releases/tag/0.2.0

frontend/node_modules/js-yaml/LICENSE

@@ -0,0 +1,21 @@
+(The MIT License)
+
+Copyright (C) 2011-2015 by Vitaly Puzrin
+
+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.

frontend/node_modules/js-yaml/README.md

@@ -0,0 +1,299 @@
+JS-YAML - YAML 1.2 parser / writer for JavaScript
+=================================================
+
+[![Build Status](https://travis-ci.org/nodeca/js-yaml.svg?branch=master)](https://travis-ci.org/nodeca/js-yaml)
+[![NPM version](https://img.shields.io/npm/v/js-yaml.svg)](https://www.npmjs.org/package/js-yaml)
+
+__[Online Demo](http://nodeca.github.com/js-yaml/)__
+
+
+This is an implementation of [YAML](http://yaml.org/), a human-friendly data
+serialization language. Started as [PyYAML](http://pyyaml.org/) port, it was
+completely rewritten from scratch. Now it's very fast, and supports 1.2 spec.
+
+
+Installation
+------------
+
+### YAML module for node.js
+
+```
+npm install js-yaml
+```
+
+
+### CLI executable
+
+If you want to inspect your YAML files from CLI, install js-yaml globally:
+
+```
+npm install -g js-yaml
+```
+
+#### Usage
+
+```
+usage: js-yaml [-h] [-v] [-c] [-t] file
+
+Positional arguments:
+  file           File with YAML document(s)
+
+Optional arguments:
+  -h, --help     Show this help message and exit.
+  -v, --version  Show program's version number and exit.
+  -c, --compact  Display errors in compact mode
+  -t, --trace    Show stack trace on error
+```
+
+
+### Bundled YAML library for browsers
+
+``` html
+<!-- esprima required only for !!js/function -->
+<script src="esprima.js"></script>
+<script src="js-yaml.min.js"></script>
+<script type="text/javascript">
+var doc = jsyaml.load('greeting: hello\nname: world');
+</script>
+```
+
+Browser support was done mostly for the online demo. If you find any errors - feel
+free to send pull requests with fixes. Also note, that IE and other old browsers
+needs [es5-shims](https://github.com/kriskowal/es5-shim) to operate.
+
+Notes:
+
+1. We have no resources to support browserified version. Don't expect it to be
+   well tested. Don't expect fast fixes if something goes wrong there.
+2. `!!js/function` in browser bundle will not work by default. If you really need
+   it - load `esprima` parser first (via amd or directly).
+3. `!!bin` in browser will return `Array`, because browsers do not support
+   node.js `Buffer` and adding Buffer shims is completely useless on practice.
+
+
+API
+---
+
+Here we cover the most 'useful' methods. If you need advanced details (creating
+your own tags), see [wiki](https://github.com/nodeca/js-yaml/wiki) and
+[examples](https://github.com/nodeca/js-yaml/tree/master/examples) for more
+info.
+
+``` javascript
+const yaml = require('js-yaml');
+const fs   = require('fs');
+
+// Get document, or throw exception on error
+try {
+  const doc = yaml.safeLoad(fs.readFileSync('/home/ixti/example.yml', 'utf8'));
+  console.log(doc);
+} catch (e) {
+  console.log(e);
+}
+```
+
+
+### safeLoad (string [ , options ])
+
+**Recommended loading way.** Parses `string` as single YAML document. Returns either a
+plain object, a string or `undefined`, or throws `YAMLException` on error. By default, does
+not support regexps, functions and undefined. This method is safe for untrusted data.
+
+options:
+
+- `filename` _(default: null)_ - string to be used as a file path in
+  error/warning messages.
+- `onWarning` _(default: null)_ - function to call on warning messages.
+  Loader will call this function with an instance of `YAMLException` for each warning.
+- `schema` _(default: `DEFAULT_SAFE_SCHEMA`)_ - specifies a schema to use.
+  - `FAILSAFE_SCHEMA` - only strings, arrays and plain objects:
+    http://www.yaml.org/spec/1.2/spec.html#id2802346
+  - `JSON_SCHEMA` - all JSON-supported types:
+    http://www.yaml.org/spec/1.2/spec.html#id2803231
+  - `CORE_SCHEMA` - same as `JSON_SCHEMA`:
+    http://www.yaml.org/spec/1.2/spec.html#id2804923
+  - `DEFAULT_SAFE_SCHEMA` - all supported YAML types, without unsafe ones
+    (`!!js/undefined`, `!!js/regexp` and `!!js/function`):
+    http://yaml.org/type/
+  - `DEFAULT_FULL_SCHEMA` - all supported YAML types.
+- `json` _(default: false)_ - compatibility with JSON.parse behaviour. If true, then duplicate keys in a mapping will override values rather than throwing an error.
+
+NOTE: This function **does not** understand multi-document sources, it throws
+exception on those.
+
+NOTE: JS-YAML **does not** support schema-specific tag resolution restrictions.
+So, the JSON schema is not as strictly defined in the YAML specification.
+It allows numbers in any notation, use `Null` and `NULL` as `null`, etc.
+The core schema also has no such restrictions. It allows binary notation for integers.
+
+
+### load (string [ , options ])
+
+**Use with care with untrusted sources**. The same as `safeLoad()` but uses
+`DEFAULT_FULL_SCHEMA` by default - adds some JavaScript-specific types:
+`!!js/function`, `!!js/regexp` and `!!js/undefined`. For untrusted sources, you
+must additionally validate object structure to avoid injections:
+
+``` javascript
+const untrusted_code = '"toString": !<tag:yaml.org,2002:js/function> "function (){very_evil_thing();}"';
+
+// I'm just converting that string, what could possibly go wrong?
+require('js-yaml').load(untrusted_code) + ''
+```
+
+
+### safeLoadAll (string [, iterator] [, options ])
+
+Same as `safeLoad()`, but understands multi-document sources. Applies
+`iterator` to each document if specified, or returns array of documents.
+
+``` javascript
+const yaml = require('js-yaml');
+
+yaml.safeLoadAll(data, function (doc) {
+  console.log(doc);
+});
+```
+
+
+### loadAll (string [, iterator] [ , options ])
+
+Same as `safeLoadAll()` but uses `DEFAULT_FULL_SCHEMA` by default.
+
+
+### safeDump (object [ , options ])
+
+Serializes `object` as a YAML document. Uses `DEFAULT_SAFE_SCHEMA`, so it will
+throw an exception if you try to dump regexps or functions. However, you can
+disable exceptions by setting the `skipInvalid` option to `true`.
+
+options:
+
+- `indent` _(default: 2)_ - indentation width to use (in spaces).
+- `noArrayIndent` _(default: false)_ - when true, will not add an indentation level to array elements
+- `skipInvalid` _(default: false)_ - do not throw on invalid types (like function
+  in the safe schema) and skip pairs and single values with such types.
+- `flowLevel` (default: -1) - specifies level of nesting, when to switch from
+  block to flow style for collections. -1 means block style everwhere
+- `styles` - "tag" => "style" map. Each tag may have own set of styles.
+- `schema` _(default: `DEFAULT_SAFE_SCHEMA`)_ specifies a schema to use.
+- `sortKeys` _(default: `false`)_ - if `true`, sort keys when dumping YAML. If a
+  function, use the function to sort the keys.
+- `lineWidth` _(default: `80`)_ - set max line width.
+- `noRefs` _(default: `false`)_ - if `true`, don't convert duplicate objects into references
+- `noCompatMode` _(default: `false`)_ - if `true` don't try to be compatible with older
+  yaml versions. Currently: don't quote "yes", "no" and so on, as required for YAML 1.1
+- `condenseFlow` _(default: `false`)_ - if `true` flow sequences will be condensed, omitting the space between `a, b`. Eg. `'[a,b]'`, and omitting the space between `key: value` and quoting the key. Eg. `'{"a":b}'` Can be useful when using yaml for pretty URL query params as spaces are %-encoded.
+
+The following table show availlable styles (e.g. "canonical",
+"binary"...) available for each tag (.e.g. !!null, !!int ...). Yaml
+output is shown on the right side after `=>` (default setting) or `->`:
+
+``` none
+!!null
+  "canonical"   -> "~"
+  "lowercase"   => "null"
+  "uppercase"   -> "NULL"
+  "camelcase"   -> "Null"
+
+!!int
+  "binary"      -> "0b1", "0b101010", "0b1110001111010"
+  "octal"       -> "01", "052", "016172"
+  "decimal"     => "1", "42", "7290"
+  "hexadecimal" -> "0x1", "0x2A", "0x1C7A"
+
+!!bool
+  "lowercase"   => "true", "false"
+  "uppercase"   -> "TRUE", "FALSE"
+  "camelcase"   -> "True", "False"
+
+!!float
+  "lowercase"   => ".nan", '.inf'
+  "uppercase"   -> ".NAN", '.INF'
+  "camelcase"   -> ".NaN", '.Inf'
+```
+
+Example:
+
+``` javascript
+safeDump (object, {
+  'styles': {
+    '!!null': 'canonical' // dump null as ~
+  },
+  'sortKeys': true        // sort object keys
+});
+```
+
+### dump (object [ , options ])
+
+Same as `safeDump()` but without limits (uses `DEFAULT_FULL_SCHEMA` by default).
+
+
+Supported YAML types
+--------------------
+
+The list of standard YAML tags and corresponding JavaScipt types. See also
+[YAML tag discussion](http://pyyaml.org/wiki/YAMLTagDiscussion) and
+[YAML types repository](http://yaml.org/type/).
+
+```
+!!null ''                   # null
+!!bool 'yes'                # bool
+!!int '3...'                # number
+!!float '3.14...'           # number
+!!binary '...base64...'     # buffer
+!!timestamp 'YYYY-...'      # date
+!!omap [ ... ]              # array of key-value pairs
+!!pairs [ ... ]             # array or array pairs
+!!set { ... }               # array of objects with given keys and null values
+!!str '...'                 # string
+!!seq [ ... ]               # array
+!!map { ... }               # object
+```
+
+**JavaScript-specific tags**
+
+```
+!!js/regexp /pattern/gim            # RegExp
+!!js/undefined ''                   # Undefined
+!!js/function 'function () {...}'   # Function
+```
+
+Caveats
+-------
+
+Note, that you use arrays or objects as key in JS-YAML. JS does not allow objects
+or arrays as keys, and stringifies (by calling `toString()` method) them at the
+moment of adding them.
+
+``` yaml
+---
+? [ foo, bar ]
+: - baz
+? { foo: bar }
+: - baz
+  - baz
+```
+
+``` javascript
+{ "foo,bar": ["baz"], "[object Object]": ["baz", "baz"] }
+```
+
+Also, reading of properties on implicit block mapping keys is not supported yet.
+So, the following YAML document cannot be loaded.
+
+``` yaml
+&anchor foo:
+  foo: bar
+  *anchor: duplicate key
+  baz: bat
+  *anchor: duplicate key
+```
+
+
+js-yaml for enterprise
+----------------------
+
+Available as part of the Tidelift Subscription
+
+The maintainers of js-yaml and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. [Learn more.](https://tidelift.com/subscription/pkg/npm-js-yaml?utm_source=npm-js-yaml&utm_medium=referral&utm_campaign=enterprise&utm_term=repo)

frontend/node_modules/js-yaml/bin/js-yaml.js

@@ -0,0 +1,132 @@
+#!/usr/bin/env node
+
+
+'use strict';
+
+/*eslint-disable no-console*/
+
+
+// stdlib
+var fs    = require('fs');
+
+
+// 3rd-party
+var argparse = require('argparse');
+
+
+// internal
+var yaml = require('..');
+
+
+////////////////////////////////////////////////////////////////////////////////
+
+
+var cli = new argparse.ArgumentParser({
+  prog:     'js-yaml',
+  version:  require('../package.json').version,
+  addHelp:  true
+});
+
+
+cli.addArgument([ '-c', '--compact' ], {
+  help:   'Display errors in compact mode',
+  action: 'storeTrue'
+});
+
+
+// deprecated (not needed after we removed output colors)
+// option suppressed, but not completely removed for compatibility
+cli.addArgument([ '-j', '--to-json' ], {
+  help:   argparse.Const.SUPPRESS,
+  dest:   'json',
+  action: 'storeTrue'
+});
+
+
+cli.addArgument([ '-t', '--trace' ], {
+  help:   'Show stack trace on error',
+  action: 'storeTrue'
+});
+
+cli.addArgument([ 'file' ], {
+  help:   'File to read, utf-8 encoded without BOM',
+  nargs:  '?',
+  defaultValue: '-'
+});
+
+
+////////////////////////////////////////////////////////////////////////////////
+
+
+var options = cli.parseArgs();
+
+
+////////////////////////////////////////////////////////////////////////////////
+
+function readFile(filename, encoding, callback) {
+  if (options.file === '-') {
+    // read from stdin
+
+    var chunks = [];
+
+    process.stdin.on('data', function (chunk) {
+      chunks.push(chunk);
+    });
+
+    process.stdin.on('end', function () {
+      return callback(null, Buffer.concat(chunks).toString(encoding));
+    });
+  } else {
+    fs.readFile(filename, encoding, callback);
+  }
+}
+
+readFile(options.file, 'utf8', function (error, input) {
+  var output, isYaml;
+
+  if (error) {
+    if (error.code === 'ENOENT') {
+      console.error('File not found: ' + options.file);
+      process.exit(2);
+    }
+
+    console.error(
+      options.trace && error.stack ||
+      error.message ||
+      String(error));
+
+    process.exit(1);
+  }
+
+  try {
+    output = JSON.parse(input);
+    isYaml = false;
+  } catch (err) {
+    if (err instanceof SyntaxError) {
+      try {
+        output = [];
+        yaml.loadAll(input, function (doc) { output.push(doc); }, {});
+        isYaml = true;
+
+        if (output.length === 0) output = null;
+        else if (output.length === 1) output = output[0];
+
+      } catch (e) {
+        if (options.trace && err.stack) console.error(e.stack);
+        else console.error(e.toString(options.compact));
+
+        process.exit(1);
+      }
+    } else {
+      console.error(
+        options.trace && err.stack ||
+        err.message ||
+        String(err));
+
+      process.exit(1);
+    }
+  }
+
+  if (isYaml) console.log(JSON.stringify(output, null, '  '));
+  else console.log(yaml.dump(output));
+});

frontend/node_modules/js-yaml/index.js

@@ -0,0 +1,7 @@
+'use strict';
+
+
+var yaml = require('./lib/js-yaml.js');
+
+
+module.exports = yaml;

frontend/node_modules/js-yaml/package.json

@@ -0,0 +1,49 @@
+{
+  "name": "js-yaml",
+  "version": "3.14.1",
+  "description": "YAML 1.2 parser and serializer",
+  "keywords": [
+    "yaml",
+    "parser",
+    "serializer",
+    "pyyaml"
+  ],
+  "homepage": "https://github.com/nodeca/js-yaml",
+  "author": "Vladimir Zapparov <dervus.grim@gmail.com>",
+  "contributors": [
+    "Aleksey V Zapparov <ixti@member.fsf.org> (http://www.ixti.net/)",
+    "Vitaly Puzrin <vitaly@rcdesign.ru> (https://github.com/puzrin)",
+    "Martin Grenfell <martin.grenfell@gmail.com> (http://got-ravings.blogspot.com)"
+  ],
+  "license": "MIT",
+  "repository": "nodeca/js-yaml",
+  "files": [
+    "index.js",
+    "lib/",
+    "bin/",
+    "dist/"
+  ],
+  "bin": {
+    "js-yaml": "bin/js-yaml.js"
+  },
+  "unpkg": "dist/js-yaml.min.js",
+  "jsdelivr": "dist/js-yaml.min.js",
+  "dependencies": {
+    "argparse": "^1.0.7",
+    "esprima": "^4.0.0"
+  },
+  "devDependencies": {
+    "ansi": "^0.3.1",
+    "benchmark": "^2.1.4",
+    "browserify": "^16.2.2",
+    "codemirror": "^5.13.4",
+    "eslint": "^7.0.0",
+    "fast-check": "^1.24.2",
+    "istanbul": "^0.4.5",
+    "mocha": "^7.1.2",
+    "uglify-js": "^3.0.1"
+  },
+  "scripts": {
+    "test": "make test"
+  }
+}