aliases.yaml YAMLException

[incorporated777]

After upgrading to newest 4.0.0 version when trying to start grunt tasks I get error:

$ grunt
Loading "gruntFile.js" tasks...ERROR
>> YAMLException: Schema.extend argument should be a Type, [ Type ], or a schema definition ({ implicit: [...], explicit: [...] })
Warning: Task "default" not found. Use --force to continue.

With one of the defined tasks:

$ grunt dev
Loading "gruntFile.js" tasks...ERROR
>> YAMLException: Schema.extend argument should be a Type, [ Type ], or a schema definition ({ implicit: [...], explicit: [...] })
Warning: Task "dev" not found. Use --force to continue.

After downgrading to version 3.0.2 everything is running smooth.

Node version: 10.16.0

aliases.yaml definition

default:
  - 'newer:less'
  - 'newer:babel'
  - 'webpack:prod'
  - 'watch'

dev:
  - 'newer:babel'
  - 'webpack:prod'
  - 'concurrent:dev'

[incorporated777]

Is anyone here? :|

[SolomoN-ua]

Hi @incorporated777,

I can't reproduce this issue,, could you please provide more details or better a test that will help to reproduce it?
also could you please check what js-yaml and js-yaml-js-types versions you have in your node_modules after installation of the dependencies?

[mbrodala]

I can confirm the issue when trying to upgrade from 3.0.0 to 4.0.0:

$ grunt -vvv
Initializing
Command-line options: --verbose, --gruntfile=/.../Gruntfile.js

Reading "Gruntfile.js" Gruntfile...OK

Registering Gruntfile tasks.
Loading "Gruntfile.js" tasks...ERROR
>> YAMLException: Schema.extend argument should be a Type, [ Type ], or a schema definition ({ implicit: [...], explicit: [...] })
>>     at Schema.extend (/.../node_modules/load-grunt-config/node_modules/js-yaml/lib/schema.js:84:11)
>>     at module.exports (/.../node_modules/load-grunt-config/lib/readfile.js:17:42)
>>     at /.../node_modules/load-grunt-config/lib/readconfigdir.js:21:18
>>     at Array.forEach (<anonymous>:null:null)
>>     at module.exports (/.../node_modules/load-grunt-config/lib/readconfigdir.js:19:9)
>>     at /.../node_modules/load-grunt-config/lib/gruntconfig.js:10:28
>>     at arrayReduce (/.../node_modules/lodash/lodash.js:697:21)
>>     at Function.reduce (/.../node_modules/lodash/lodash.js:9749:14)
>>     at LodashWrapper.object.<computed> [as reduce] (/.../node_modules/lodash/lodash.js:15806:25)
>>     at module.exports (/.../node_modules/load-grunt-config/lib/gruntconfig.js:9:6)
>>     at module.exports (/.../node_modules/load-grunt-config/index.js:33:16)
>>     at Object.module.exports (/.../Gruntfile.js:4:31)
>>     at loadTask (/.../node_modules/grunt/lib/grunt/task.js:315:10)
>>     at Task.task.init (/.../node_modules/grunt/lib/grunt/task.js:450:5)
>>     at Object.grunt.tasks (/.../node_modules/grunt/lib/grunt.js:129:8)
>>     at Liftoff.<anonymous> (/usr/lib/node_modules/grunt-cli/bin/grunt:68:15)
>>     at Liftoff.execute (/usr/lib/node_modules/grunt-cli/node_modules/liftup/index.js:202:12)
>>     at module.exports (/usr/lib/node_modules/grunt-cli/node_modules/flagged-respawn/index.js:51:3)
>>     at Liftoff.<anonymous> (/usr/lib/node_modules/grunt-cli/node_modules/liftup/index.js:192:5)
>>     at Liftoff.<anonymous> (/usr/lib/node_modules/grunt-cli/node_modules/liftup/index.js:155:7)
>>     at processTicksAndRejections (internal/process/task_queues.js:79:11)

No tasks specified, running default tasks.
Running tasks: default
Warning: Task "default" not found. Use --force to continue.

Aborted due to warnings.

The Gruntfile.js:

module.exports = function(grunt) {
  var path = require('path');

  require('load-grunt-config')(grunt, {
    configPath: [
      path.join(process.cwd(), 'config', 'grunt'),
    ],
  });
};

And config/grunt/aliases.yaml:

default:
  - clean
  - less
  - copy
  - npmcopy
  - uglify

[mbrodala]

Notice that e.g. aliases.json seems to work just fine so this could be used in the meantime.

[mbrodala]

@SolomoN-ua As for your questions:

js-yaml (4.1.0)

$ yarn info js-yaml 
yarn info v1.22.5
{
  name: 'js-yaml',
  description: 'YAML 1.2 parser and serializer',
  'dist-tags': {
    latest: '4.1.0'
  },
  versions: [
    '0.2.0',
    '0.2.1',
    '0.2.2',
    '0.3.0',
    '0.3.1',
    '0.3.2',
    '0.3.3',
    '0.3.4',
    '0.3.5',
    '0.3.6',
    '0.3.7',
    '1.0.0',
    '1.0.1',
    '1.0.2',
    '1.0.3',
    '2.0.0',
    '2.0.1',
    '2.0.2',
    '2.0.3',
    '2.0.4',
    '2.0.5',
    '2.1.0',
    '2.1.1',
    '2.1.2',
    '2.1.3',
    '3.0.0',
    '3.0.1',
    '3.0.2',
    '3.1.0',
    '3.2.1',
    '3.2.2',
    '3.2.3',
    '3.2.4',
    '3.2.5',
    '3.2.6',
    '3.2.7',
    '3.3.0',
    '3.3.1',
    '3.4.0',
    '3.4.1',
    '3.4.2',
    '3.4.3',
    '3.4.4',
    '3.4.5',
    '3.4.6',
    '3.5.0',
    '3.5.1',
    '3.5.2',
    '3.5.3',
    '3.5.4',
    '3.5.5',
    '3.6.0',
    '3.6.1',
    '3.7.0',
    '3.8.0',
    '3.8.1',
    '3.8.2',
    '3.8.3',
    '3.8.4',
    '3.9.0',
    '3.9.1',
    '3.10.0',
    '3.11.0',
    '3.12.0',
    '3.12.1',
    '3.12.2',
    '3.13.0',
    '3.13.1',
    '3.14.0',
    '3.14.1',
    '4.0.0',
    '4.1.0'
  ],
  maintainers: [
    {
      name: 'vitaly',
      email: 'vitaly@rcdesign.ru'
    }
  ],
  time: {
    modified: '2021-04-14T21:07:11.250Z',
    created: '2011-11-02T01:56:02.870Z',
    '0.2.0': '2011-11-02T01:56:04.988Z',
    '0.2.1': '2011-11-02T15:44:59.476Z',
    '0.2.2': '2011-11-06T19:36:46.376Z',
    '0.3.0': '2011-11-09T11:50:52.572Z',
    '0.3.1': '2011-11-18T04:40:26.297Z',
    '0.3.2': '2011-12-16T03:11:23.796Z',
    '0.3.3': '2011-12-20T00:33:34.021Z',
    '0.3.4': '2011-12-24T12:11:57.618Z',
    '0.3.5': '2012-01-10T12:03:28.241Z',
    '0.3.6': '2012-02-22T04:58:30.034Z',
    '0.3.7': '2012-02-28T16:06:34.722Z',
    '1.0.0': '2012-07-01T15:02:00.004Z',
    '1.0.1': '2012-07-07T09:42:56.820Z',
    '1.0.2': '2012-08-02T08:44:43.484Z',
    '1.0.3': '2012-11-05T01:57:23.010Z',
    '2.0.0': '2013-02-09T07:34:25.954Z',
    '2.0.1': '2013-02-09T15:41:35.905Z',
    '2.0.2': '2013-02-15T11:22:57.482Z',
    '2.0.3': '2013-02-26T03:14:59.871Z',
    '2.0.4': '2013-04-08T11:45:36.838Z',
    '2.0.5': '2013-04-26T14:40:59.621Z',
    '2.1.0': '2013-06-05T14:44:09.636Z',
    '2.1.1': '2013-10-01T20:08:34.063Z',
    '2.1.2': '2013-10-06T21:35:32.358Z',
    '2.1.3': '2013-10-15T21:30:17.137Z',
    '3.0.0': '2013-12-16T08:35:24.383Z',
    '3.0.1': '2013-12-22T18:44:21.114Z',
    '3.0.2': '2014-02-27T03:20:28.502Z',
    '3.1.0': '2014-07-07T09:31:00.559Z',
    '3.2.0': '2014-08-24T07:50:32.612Z',
    '3.2.1': '2014-08-24T08:05:01.740Z',
    '3.2.2': '2014-09-06T20:33:29.831Z',
    '3.2.3': '2014-11-08T05:12:03.094Z',
    '3.2.4': '2014-12-19T13:13:57.457Z',
    '3.2.5': '2014-12-27T22:20:55.637Z',
    '3.2.6': '2015-02-07T03:02:33.322Z',
    '3.2.7': '2015-02-19T10:09:14.968Z',
    '3.3.0': '2015-04-26T05:56:35.340Z',
    '3.3.1': '2015-05-13T13:37:54.734Z',
    '3.4.0': '2015-08-22T22:35:19.729Z',
    '3.4.1': '2015-09-04T23:36:30.962Z',
    '3.4.2': '2015-09-09T10:06:07.503Z',
    '3.4.3': '2015-10-10T19:41:24.397Z',
    '3.4.4': '2015-11-21T20:20:51.107Z',
    '3.4.5': '2015-11-23T04:26:14.849Z',
    '3.4.6': '2015-11-26T13:53:40.452Z',
    '3.5.0': '2016-01-10T19:09:01.309Z',
    '3.5.1': '2016-01-11T01:28:37.047Z',
    '3.5.2': '2016-01-11T11:03:18.527Z',
    '3.5.3': '2016-02-11T07:27:27.075Z',
    '3.5.4': '2016-03-09T18:25:33.192Z',
    '3.5.5': '2016-03-17T14:48:49.376Z',
    '3.6.0': '2016-04-15T21:18:53.001Z',
    '3.6.1': '2016-05-11T19:40:39.230Z',
    '3.7.0': '2016-11-12T01:32:04.258Z',
    '3.8.0': '2017-02-07T00:31:34.951Z',
    '3.8.1': '2017-02-07T00:39:35.390Z',
    '3.8.2': '2017-03-02T16:49:42.243Z',
    '3.8.3': '2017-04-05T12:47:42.580Z',
    '3.8.4': '2017-05-08T15:16:29.219Z',
    '3.9.0': '2017-07-08T08:50:56.677Z',
    '3.9.1': '2017-07-30T07:33:59.643Z',
    '3.10.0': '2017-09-11T08:19:12.765Z',
    '3.11.0': '2018-03-05T15:52:52.361Z',
    '3.12.0': '2018-06-01T22:48:26.432Z',
    '3.12.1': '2019-01-05T09:22:04.437Z',
    '3.12.2': '2019-02-26T15:03:08.027Z',
    '3.13.0': '2019-03-20T19:16:31.897Z',
    '3.13.1': '2019-04-05T16:15:22.531Z',
    '3.14.0': '2020-05-22T18:30:32.680Z',
    '3.14.1': '2020-12-07T19:45:10.828Z',
    '4.0.0': '2021-01-03T13:51:18.695Z',
    '4.1.0': '2021-04-14T21:07:09.057Z'
  },
  author: {
    name: 'Vladimir Zapparov',
    email: 'dervus.grim@gmail.com'
  },
  repository: {
    type: 'git',
    url: 'git+https://github.com/nodeca/js-yaml.git'
  },
  users: {
    pvorb: true,
    matthiasg: true,
    fgribreau: true,
    sbruchmann: true,
    adamrenny: true,
    brianloveswords: true,
    asilvas: true,
    gabeio: true,
    goliatone: true,
    lewisbrown: true,
    japh: true,
    'alxe.master': true,
    'dewang-mistry': true,
    alvint: true,
    brentonhouse: true,
    jelhaouchi: true,
    jdhartley: true,
    itonyyo: true,
    loki2302: true,
    buzuli: true,
    gerst20051: true,
    rdcl: true,
    brentlintner: true,
    denji: true,
    rdesoky: true,
    willpracht: true,
    paroczi: true,
    eviratec: true,
    lvivier: true,
    smartcoordination: true,
    fdeneux: true,
    monsterkodi: true,
    evan2x: true,
    octetstream: true,
    mfellner: true,
    bjmin: true,
    leodutra: true,
    ambdxtrch: true,
    ajmckee: true,
    coalesce: true,
    pstoev: true,
    illuminator: true,
    shanewholloway: true,
    wouter_vdb: true,
    nigel0913: true,
    fleischer: true,
    monjer: true,
    nukosuke: true,
    captison: true,
    cknowles: true,
    talltotal: true,
    leizongmin: true,
    akarem: true,
    mikestaub: true,
    jakedetels: true,
    hifaraz: true,
    bensonho: true,
    ajduke: true,
    tteogi: true,
    tmurngon: true,
    gabriellopes: true,
    penglu: true,
    troygizzi: true,
    gbas: true,
    prometheas: true,
    iori20091101: true,
    skellertor: true,
    rickyrattlesnake: true,
    program247365: true,
    leonzhao: true,
    janez89: true,
    tcrowe: true,
    bsara: true,
    kael: true,
    holmes89: true,
    quafoo: true,
    lacodda: true,
    crimeminister: true,
    stone_breaker: true,
    nikolay: true,
    kontrax: true,
    stanlous: true,
    axelrindle: true,
    bphanikumar: true,
    lvpeng101: true,
    yitzchak: true,
    tsxuehu: true,
    lholmquist: true,
    felarof99: true,
    elevenlui: true,
    kakaman: true,
    lgh06: true,
    kekdude: true,
    edwardxyt: true,
    keenwon: true,
    d7game: true,
    geofftech: true,
    hehaiyang: true,
    rogeruiz: true,
    muwum: true,
    bstevenson: true,
    'zhenguo.zhao': true,
    omar84: true,
    nickeltobias: true,
    nilz3ro: true,
    jream: true,
    chrisyipw: true,
    nuwaio: true,
    sammade: true,
    tamikot: true,
    chronosis: true,
    eterna2: true,
    maxkoryukov: true,
    astraloverflow: true,
    nraibaud: true,
    onlyutkarsh: true,
    ierhyna: true,
    xgheaven: true,
    xiaobing: true,
    arcticicestudio: true,
    daizch: true
  },
  homepage: 'https://github.com/nodeca/js-yaml#readme',
  keywords: [
    'yaml',
    'parser',
    'serializer',
    'pyyaml'
  ],
  contributors: [
    {
      name: 'Aleksey V Zapparov',
      email: 'ixti@member.fsf.org',
      url: 'http://www.ixti.net/'
    },
    {
      name: 'Vitaly Puzrin',
      email: 'vitaly@rcdesign.ru',
      url: 'https://github.com/puzrin'
    },
    {
      name: 'Martin Grenfell',
      email: 'martin.grenfell@gmail.com',
      url: 'http://got-ravings.blogspot.com'
    }
  ],
  bugs: {
    url: 'https://github.com/nodeca/js-yaml/issues'
  },
  license: 'MIT',
  readmeFilename: 'README.md',
  version: '4.1.0',
  bin: {
    'js-yaml': 'bin/js-yaml.js'
  },
  module: './dist/js-yaml.mjs',
  exports: {
    '.': {
      import: './dist/js-yaml.mjs',
      require: './index.js'
    },
    './package.json': './package.json'
  },
  scripts: {
    lint: 'eslint .',
    test: 'npm run lint && mocha',
    coverage: 'npm run lint && nyc mocha && nyc report --reporter html',
    demo: 'npm run lint && node support/build_demo.js',
    'gh-demo': 'npm run demo && gh-pages -d demo -f',
    browserify: 'rollup -c support/rollup.config.js',
    prepublishOnly: 'npm run gh-demo'
  },
  unpkg: 'dist/js-yaml.min.js',
  jsdelivr: 'dist/js-yaml.min.js',
  dependencies: {
    argparse: '^2.0.1'
  },
  devDependencies: {
    '@rollup/plugin-commonjs': '^17.0.0',
    '@rollup/plugin-node-resolve': '^11.0.0',
    ansi: '^0.3.1',
    benchmark: '^2.1.4',
    codemirror: '^5.13.4',
    eslint: '^7.0.0',
    'fast-check': '^2.8.0',
    'gh-pages': '^3.1.0',
    mocha: '^8.2.1',
    nyc: '^15.1.0',
    rollup: '^2.34.1',
    'rollup-plugin-node-polyfills': '^0.2.1',
    'rollup-plugin-terser': '^7.0.2',
    shelljs: '^0.8.4'
  },
  gitHead: '2cef47bebf60da141b78b085f3dea3b5733dcc12',
  dist: {
    integrity: 'sha512-wpxZs9NoxZaJESJGIZTyDEaYpl0FKSA+FB9aJiyemKhMwkxQg63h4T1KJgUGHpTqPDNRcmmYLugrRjJlBtWvRA==',
    shasum: 'c1fb65f8f5017901cdd2c951864ba18458a10602',
    tarball: 'https://registry.npmjs.org/js-yaml/-/js-yaml-4.1.0.tgz',
    fileCount: 33,
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}

js-yaml-js-types (1.0.0)

$ yarn info js-yaml-js-types
yarn info v1.22.5
{
  name: 'js-yaml-js-types',
  'dist-tags': {
    latest: '1.0.0'
  },
  versions: [
    '1.0.0'
  ],
  time: {
    created: '2021-01-04T10:54:51.796Z',
    '1.0.0': '2021-01-04T10:54:51.931Z',
    modified: '2021-01-04T10:54:54.287Z'
  },
  maintainers: [
    {
      name: 'vitaly',
      email: 'vitaly@rcdesign.ru'
    }
  ],
  description: 'js-yaml extra types',
  homepage: 'https://github.com/nodeca/js-yaml-js-types#readme',
  keywords: [
    'yaml',
    'parser'
  ],
  repository: {
    type: 'git',
    url: 'git+https://github.com/nodeca/js-yaml-js-types.git'
  },
  bugs: {
    url: 'https://github.com/nodeca/js-yaml-js-types/issues'
  },
  license: 'MIT',
  readmeFilename: 'README.md',
  version: '1.0.0',
  scripts: {
    lint: 'eslint .',
    test: 'npm run lint && mocha',
    coverage: 'npm run lint && nyc mocha && nyc report --reporter html'
  },
  devDependencies: {
    eslint: '^7.0.0',
    'js-yaml': '^4.0.0',
    mocha: '^7.1.2',
    nyc: '^15.1.0'
  },
  dependencies: {
    esprima: '^4.0.1'
  },
  gitHead: 'ac537e7bbdd3c2cbbd9882ca3919c520c2dc022b',
  dist: {
    integrity: 'sha512-UNjPwuoaj4mcHkJCJSF6l4MgkzoFjG+JJkBXMYNvjgO3yE9gTeRt+E6PN022vduz/daZZ7HmlEiSEE36NrGE4w==',
    shasum: 'bf17cb75c7587c698294d15bbfa5f9b8b10b874b',
    tarball: 'https://registry.npmjs.org/js-yaml-js-types/-/js-yaml-js-types-1.0.0.tgz',
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      '-----END PGP SIGNATURE-----\r\n'
  },
  directories: {}
}
Done in 0.81s.

[SolomoN-ua]

@mbrodala thx for extra information, but as far as I remember yarn info does not show what version is currently installed and if it is installed at all. Issue described by you above looks like missing or incorrect js-yaml-js-types dependency. Could you please verify that is exists in your project node_modules folder?

[mbrodala]

The filesystem agrees with Yarn:

$ grep version node_modules/js-yaml*/package.json
node_modules/js-yaml-js-types/package.json:  "version": "1.0.0",
node_modules/js-yaml/package.json:  "version": "3.14.1",

At least by existence. Indeed js-yaml is outdated on the disk. 🤔

[mbrodala]

Here are relevant entries from the yarn.lock:

js-yaml@4.1.0:
  version "4.1.0"
  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-4.1.0.tgz#c1fb65f8f5017901cdd2c951864ba18458a10602"
  integrity sha512-wpxZs9NoxZaJESJGIZTyDEaYpl0FKSA+FB9aJiyemKhMwkxQg63h4T1KJgUGHpTqPDNRcmmYLugrRjJlBtWvRA==
  dependencies:
    argparse "^2.0.1"

js-yaml@^3.1.0, js-yaml@~3.14.0:
  version "3.14.1"
  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.14.1.tgz#dae812fdb3825fa306609a8717383c50c36a0537"
  integrity sha512-okMH7OXXJ7YrN9Ok3/SXrnu4iX9yOk+25nqX4imS2npuvTYDmo/QEZoqwZkYaIDk3jVvBOTOIEgEhaLOynBS9g==
  dependencies:
    argparse "^1.0.7"
    esprima "^4.0.0"

js-yaml@~3.4.3:
  version "3.4.6"
  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.4.6.tgz#6be1b23f6249f53d293370fd4d1aaa63ce1b4eb0"
  integrity sha1-a+GyP2JJ9T0pM3D9TRqqY84bTrA=
  dependencies:
    argparse "^1.0.2"
    esprima "^2.6.0"
    inherit "^2.2.2"

I never got behind the mess of multiple versions of the same package in the Node world. 🤷‍♂️

[SolomoN-ua]

@mbrodala thx for extra info, I just released "debug" version 4.0.1, could you please give it a try and if it will fail send here console output?

[mbrodala]

Here we go:

$ grunt -vvv
Initializing
Command-line options: --verbose, --gruntfile=/.../Gruntfile.js

Reading "Gruntfile.js" Gruntfile...OK

Registering Gruntfile tasks.
Invalid js-yaml extension type type: Type {
  tag: 'tag:yaml.org,2002:js/regexp',
  kind: 'scalar',
  resolve: [Function: resolveJavascriptRegExp],
  construct: [Function: constructJavascriptRegExp],
  instanceOf: null,
  predicate: [Function: isRegExp],
  represent: [Function: representJavascriptRegExp],
  defaultStyle: null,
  styleAliases: {}
}
Loading "Gruntfile.js" tasks...ERROR
>> YAMLException: Schema.extend argument should be a Type, [ Type ], or a schema definition ({ implicit: [...], explicit: [...] })
>>     at Schema.extend (/.../node_modules/load-grunt-config/node_modules/js-yaml/lib/schema.js:84:11)
>>     at module.exports (/.../node_modules/load-grunt-config/lib/readfile.js:21:42)
>>     at /.../node_modules/load-grunt-config/lib/readconfigdir.js:21:18
>>     at Array.forEach (<anonymous>:null:null)
>>     at module.exports (/.../node_modules/load-grunt-config/lib/readconfigdir.js:19:9)
>>     at /.../node_modules/load-grunt-config/lib/gruntconfig.js:10:28
>>     at arrayReduce (/.../node_modules/lodash/lodash.js:697:21)
>>     at Function.reduce (/.../node_modules/lodash/lodash.js:9749:14)
>>     at LodashWrapper.object.<computed> [as reduce] (/.../node_modules/lodash/lodash.js:15806:25)
>>     at module.exports (/.../node_modules/load-grunt-config/lib/gruntconfig.js:9:6)
>>     at module.exports (/.../node_modules/load-grunt-config/index.js:33:16)
>>     at Object.module.exports (/.../Gruntfile.js:4:31)
>>     at loadTask (/.../node_modules/grunt/lib/grunt/task.js:315:10)
>>     at Task.task.init (/.../node_modules/grunt/lib/grunt/task.js:450:5)
>>     at Object.grunt.tasks (/.../node_modules/grunt/lib/grunt.js:129:8)
>>     at Liftoff.<anonymous> (/usr/lib/node_modules/grunt-cli/bin/grunt:68:15)
>>     at Liftoff.execute (/usr/lib/node_modules/grunt-cli/node_modules/liftup/index.js:202:12)
>>     at module.exports (/usr/lib/node_modules/grunt-cli/node_modules/flagged-respawn/index.js:51:3)
>>     at Liftoff.<anonymous> (/usr/lib/node_modules/grunt-cli/node_modules/liftup/index.js:192:5)
>>     at Liftoff.<anonymous> (/usr/lib/node_modules/grunt-cli/node_modules/liftup/index.js:155:7)
>>     at processTicksAndRejections (internal/process/task_queues.js:79:11)

No tasks specified, running default tasks.
Running tasks: default
Warning: Task "default" not found. Use --force to continue.

Aborted due to warnings.

[SolomoN-ua]

@mbrodala thanks, so looks like this is an issue with js-yaml will try to create a bug there because I think there is nothing that we can do on our side.

Btw, could you please provide some other details just in case if it will be needed for js-yaml project to investigate the issue?
Like: node --version and OS win/mac/linux?

[mbrodala]

No problem:

$ node --version
v12.22.1
$ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 20.04.2 LTS
Release:	20.04
Codename:	focal

OS is Linux in a Docker container, the host OS is also Linux though.

[SolomoN-ua]

@mbrodala thank you. I just created an issue for js-yaml. Lets wait for the answer there.

nodeca/js-yaml#637