v16.0.0

v16.0.0 (2021-10-28)

Breaking Change 💥

• #2896 Remove deprecated rule aliases (@IvanGoncharov)
• #2897 Remove 'findDeprecatedUsages' that was previously deprecated (@IvanGoncharov)
• #2898 Remove 'GraphQLSchema::isPossibleType' that was previously deprecated (@IvanGoncharov)
• #2900 Drop support for long deprecated comments as descriptions (@IvanGoncharov)
• #2902 Remove deprecated {GraphQLEnumValue, GraphQLField}::isDeprecated (@IvanGoncharov)
• #2903 Removed parser support for legacy syntax (@IvanGoncharov)
• #2904 Remove support for positional args in graphql/execute/subscribe func (@IvanGoncharov)
• #2905 resolveType: remove support for returning GraphQLObjectType (@IvanGoncharov)
• #2906 Convert GraphQLList and GraphQLNonNull into proper classes (@IvanGoncharov)
• #2907 Remove 'find' polyfill (@IvanGoncharov)
• #2911 Remove 'isFinite' & 'isInteger' polyfills (@IvanGoncharov)
• #2912 Drop 'Array.from' polyfill (@IvanGoncharov)
• #2913 Remove polyfills for Symbol (@IvanGoncharov)
• #2914 Remove Node's custom inspect function (@IvanGoncharov)
• #2915 Drop support for TS before 3.7 (@IvanGoncharov)
• #2916 refactor: replace default exports with named exports (@IvanGoncharov)
• #2917 Drop support for non-iteratable ArrayLike objects (@IvanGoncharov)
• #2918 Drop support for older browsers (@IvanGoncharov)
• #2919 Remove polyfills for 'Object.values' & 'Object.entries' (@IvanGoncharov)
• #2920 Deprecate fragments with variables and reflect that in naming (@IvanGoncharov)
• #2921 Deprecate 'getFieldDefFn' arg of 'TypeInfo' and move it last (@IvanGoncharov)
• #2923 Drop support for Node10 (@IvanGoncharov)
• #2930 visitor: remove visitorKeys argument (@IvanGoncharov)
• #2931 visit: remove template arguments for possible nodes (@IvanGoncharov)
• #2951 Forbid null & undefined as return value of 'interfaces' thunk (@IvanGoncharov)
• #2952 Restrict Thunks to support only ObjMap and Array (@IvanGoncharov)
• #2955 feat: convert Thunk to ThunkArray and ThunkObjMap (@saihaj)
• #2957 visitor: remove 4th form of visitor (@IvanGoncharov)
• #2997 print/printSchema: remove trailing new line (@IvanGoncharov)
• #3003 TS: use unknown (TS) for mixed (flow) (@saihaj)
• #3006 ts: Switch extension values to unknown to match Flow types (@IvanGoncharov)
• #3027 subscribe: drop mapping of AsyncIterable errors (@IvanGoncharov)
• #3031 Drop experimental online parser (@IvanGoncharov)
• #3032 Use specifiedBy instead of specifiedByUrl (@Code-Hex)
• #3055 Drop Node v15 (@IvanGoncharov)
• #3110 Switch entire codebase to TypeScript (@IvanGoncharov)
• #3114 Drop support for TS 3.7 (@IvanGoncharov)
• #3131 TS: Drop template argument from GraphQLFormattedError (@IvanGoncharov)
• #3132 Synchronise *.d.ts with sources converted to TS (@IvanGoncharov)
• #3182 Switch schema types to use ReadonlyArrays (@IvanGoncharov)
• #3228 Add type params to GraphQLScalar (@IvanGoncharov)
• #3231 execute: Forbid to return null from serialize function (@IvanGoncharov)
• #3239 execute: Forbid to return null from serialize function (@IvanGoncharov)
• #3250 Bring visitorKeys back (@ardatan)
• #3261 Error.toStringTag change return string from 'Object' to 'GraphQLError' (@IvanGoncharov)
• #3270 visitor: speed up visitInParallel by dropping support for unknown nodes (@IvanGoncharov)
• #3271 isNode: check exact value of node's kind (@IvanGoncharov)
• #3283 validation: restrict maximum number of errors to 100 by default (@IvanGoncharov)
• #3288 Move validation of names into GraphQL* constructors (@IvanGoncharov)
• #3311 GraphQLError: use enumerable properties (@IvanGoncharov)
• #3317 Convert const "enum-like" maps to TS enums (@IvanGoncharov)
• #3319 Add message that we only support TS >= 4.1.0 (@IvanGoncharov)
• #3326 GraphQLError: enumerate only spec prescribed properties (@IvanGoncharov)
• #3328 GraphQLField: relax default value of TArgs to any (@IvanGoncharov)

Deprecation ⚠

• #3252 Deprecate 'printError' function (@IvanGoncharov)
• #3292 Deprecate 'graphql/subscriptions' and move code to 'execution' (@yaacovCR)
• #3318 Deprecate 'ASTKindToNode' (@IvanGoncharov)

New Feature 🚀

• #2932 print: remove indentation inside of block strings (@IvanGoncharov)
• #2996 extensionASTNodes: always populate with empty array (@IvanGoncharov)
• #3059 Refine parse and AST to represent ConstValue (@leebyron)
• #3063 Refine getNamedType() for Input and Output types (@leebyron)
• #3117 RFC: Support full Unicode in lexer (@leebyron)
• #3170 Add 'Symbol.toStringTag' into every publicly exported class (@IvanGoncharov)
• #3208 Add 'UniqueArgumentDefinitionNamesRule' validation rule (@IvanGoncharov)
• #3242 parser: add specialized error for extension with descriptions (@IvanGoncharov)
• #3255 Add TResult to GraphQLFieldResolver signature (@tgriesser)
• #3259 Deprecate 'formatError' and added 'GraphQLError.toJSON' instead (@IvanGoncharov)
• #3272 collectFields/collectSubfields cleanup prototype (@IvanGoncharov)
• #3279 Make 'extensions' non-optional in schema types (@IvanGoncharov)
• #3305 Added 'GraphQLSchema.getRootType' and deprecate getOperationRootType (@IvanGoncharov)
• #3306 Deprecate SubscriptionArgs and broaden ExecutionArgs (@yaacovCR)
• #3312 language: change OperationTypeNode to enum (@lekoaf)
• #3313 GraphQLError: keep extensions always present (@IvanGoncharov)
• #3315 Change type of error extensions from anonymous Record to named interfaces (@IvanGoncharov)

Bug Fix 🐞

• #2852 introspectionFromSchema: enable 'specifiedByUrl' by default (@IvanGoncharov)
• #2855 introspection: Add missing support for deprecated input values (@IvanGoncharov)
• #2859 separateOperations: distinguish query and fragment names (@IvanGoncharov)
• #2861 RFC: Assert subscription field is not introspection. (@benjie)
• #2876 Replace 'localeCompare' with function independent from locale (@IvanGoncharov)
• #2959 ASTVisitor: use type intersection instead of type union (@IvanGoncharov)
• #2987 Synchronise TS typings for graphql.js/execute.js/subscribe.js (@IvanGoncharov)
• #2991 fix: update introspection types (@saihaj)
• #3001 fix: discrepancies between Flow and TS types (@saihaj)
• #3009 TS: use proper type for async generator (@saihaj)
• #3129 definition.d.ts: correct types (@IvanGoncharov)
• #3172 Avoid relying on constructor.name for instanceOf error check. (@IvanGoncharov)
• #3178 Export TypeKind as value (@janicduplessis)
• #3223 Disallow "true", "false", and "null" as enum values (@Yogu)
• #3248 Parser: allow classes that extend Parser to access the instance attributes (@n1ru4l)
• #3257 fix: Preserve deprecationReason on GraphQLInputFields (@trevor-scheer)
• #3273 type/introspection: add missing __Directive.args(includeDeprecated:) (@IvanGoncharov)
• #3278 lexer: fix expression to decode surrogate pairs (@Cito)
• #3308 execute: Correctly report missing root type error (@IvanGoncharov)
• #3316 Export OperationTypeNode as value (@yaacovCR)
• #3325 GraphQLError: fix empty locations if error got nodes without locations (@IvanGoncharov)
• #3339 Fix TS error caused by importing internal files directly (@IvanGoncharov)
• #3344 version: force proper typing on version literals (@IvanGoncharov)

Docs 📝

5 PRs were merged

• #2849 README: add instructions on using experimental features (@robrichard)
• #3121 *.d.ts: Switch comments to comment to TSDoc (@IvanGoncharov)
• #3146 build: add eslint-plugin-tsdoc (@saihaj)
• #3240 docs(buildASTSchema): add Subscription to list of root types (@IvanGoncharov)
• #3285 Improve documentation of validation rules (@IvanGoncharov)

Polish 💅

119 PRs were merged

• #2847 Add tests for supporting Iterable collections across the lib (@IvanGoncharov)
• #2851 tests: update 'getIntrospectionQuery' tests to use custom matchers (@IvanGoncharov)
• #2858 separateOperations-test: refactor tests to look like snapshots (@IvanGoncharov)
• #2868 Extract types for normalized configs into named types (@IvanGoncharov)
• #2878 fix: type annotation cannot appear on a constructor declaration (@saihaj)
• #2879 fix: no need to mark param optional if default value is given (@saihaj)
• #2889 Simplify isAsyncIterable (@IvanGoncharov)
• #2928 refactor: use regexp-exec (@saihaj)
• #2933 printer: remove 'addDescription' wrapper (@IvanGoncharov)
• #2934 printer: use wrap util function in more places (@IvanGoncharov)
• #2935 VariablesAreInputTypesRule: remove incorrect return type (@IvanGoncharov)
• #2936 schema-test: use chai's keys instead of undocumented key (@IvanGoncharov)
• #2937 validateSchema: inline 'getAllNodes' function (@IvanGoncharov)
• #2938 inspect: improve typings for toJSON call (@IvanGoncharov)
• #2947 valueFromAST-test: correct typings (@IvanGoncharov)
• #2948 scalars-test: improve typings of function calls (@IvanGoncharov)
• #2953 type-validate: inline getAllNodes function (@IvanGoncharov)
• #2956 buildClientSchema-test: correctly wrap test case (@IvanGoncharov)
• #2963 printer: simplify printing of query short form (@IvanGoncharov)
• #2964 Simplified memoize3 and improve type checking (@IvanGoncharov)
• #2965 parser: improve type checking of 'parseTypeReference' function (@IvanGoncharov)
• #2966 blockString-fuzz: improve lexValue typing (@IvanGoncharov)
• #2967 flow: improve typings of exported definitions (@IvanGoncharov)
• #2977 dedent-test: change test data to pass spell check (@IvanGoncharov)
• #2981 printSourceLocation: simplifying by using padStart (@IvanGoncharov)
• #2984 refactor(language/ast.d.ts): use Kind enum type (@jjangga0214)
• #2988 Replace 'Array.reduce' with 'for of' (@IvanGoncharov)
• #2989 Switch indexOf to includes whenever possible (@IvanGoncharov)
• #2990 Switch instanceOf to be named export (@IvanGoncharov)
• #2992 flow: Improve typings for exported definitions (@IvanGoncharov)
• #2995 introspection-test: fix test to correctly check for exceptions (@IvanGoncharov)
• #2998 Simplify testing AST nodes in buildSchema/extendedSchema tests (@IvanGoncharov)
• #2999 tests: replace 'invariant' with 'expect' assertion whenever possible (@IvanGoncharov)
• #3002 feat: add types for internal Parser class (@saihaj)
• #3004 GraphQLGrammarType: no need to code in d.ts can just export type (@saihaj)
• #3005 ts: switch to use ObjMap utility type (@saihaj)
• #3008 ESLint: enable 'func-names' (@IvanGoncharov)
• #3010 testUtils: refactor out dedentString from dedent (@saihaj)
• #3011 mapAsyncIterator: add default value for 'rejectCallback' (@IvanGoncharov)
• #3012 mapAsyncIterator: allow 'rejectCallback' to only be synchronous (@IvanGoncharov)
• #3013 mapAsyncIterator: simplify mapResult (@IvanGoncharov)
• #3014 mapAsyncIterator: simplify abruptClose (@IvanGoncharov)
• #3015 printer-test: switch to dedentString (@IvanGoncharov)
• #3016 printer-test: do more check on kitchen sink tests (@IvanGoncharov)
• #3022 memoize3: remove unnecessary mixed type (@IvanGoncharov)
• #3023 predicate-test: improve typecheck (@IvanGoncharov)
• #3024 subscribe: simplify by rewriting as async functions (@IvanGoncharov)
• #3025 subscribe: simplify root field extraction (@IvanGoncharov)
• #3026 Switch some of 'Object.keys' to more modern ES6 constructs (@IvanGoncharov)
• #3028 mapAsyncIterator: move promise resolution into mapResult (@IvanGoncharov)
• #3034 visitor-test: cleanup test for nodes with unknown kinds (@IvanGoncharov)
• #3035 printSchema: replace array concat with spead + update comment (@IvanGoncharov)
• #3038 TS: improve types mapAsyncIterator-test (@saihaj)
• #3039 simplify predicate-test type (@saihaj)
• #3041 Use correct terminology around iterators and iterable (@IvanGoncharov)
• #3042 Remove superficial usages of 'Array.from' (@IvanGoncharov)
• #3043 Fix Flow issues with Symbol.asyncIterator (@IvanGoncharov)
• #3050 Generalize defineArguments() (@leebyron)
• #3053 Forbid non-ASCII characters in JS files (@IvanGoncharov)
• #3058 subscribe-test: general cleanup and simplify test setups (@IvanGoncharov)
• #3061 Improve parser location API (@leebyron)
• #3062 mapAsyncIterator: refactor async iterator (@IvanGoncharov)
• #3064 mapAsyncIterator: refactor async iterator (@IvanGoncharov)
• #3066 mapAsyncIterator-test: check that return value is passed on early return (@IvanGoncharov)
• #3068 Improve grammar in execution error messages (@Cito)
• #3069 subscription-test: use separate dummy query type (@IvanGoncharov)
• #3070 subscription-test: standardize generator names (@IvanGoncharov)
• #3072 Flow: add missing names to arguments of function types (@IvanGoncharov)
• #3073 Improve naming 'err => error' and 'arr => array' (@IvanGoncharov)
• #3075 Simplify printSchema directive printing (@leebyron)
• #3079 dedent: simplify implementation (@IvanGoncharov)
• #3081 Flow: Replace force type conversion with explicit $FlowFixMe comments (@IvanGoncharov)
• #3082 collectFields: use ES6 collections instead of Object.create(null) (@IvanGoncharov)
• #3083 execute: inline collectAndExecuteSubfields function (@IvanGoncharov)
• #3084 getFieldDef: accept FieldNode instead of field name (@IvanGoncharov)
• #3085 Flow: switched to exact object by default (@IvanGoncharov)
• #3096 Flow: Remove inferrable types (@IvanGoncharov)
• #3097 Flow: use only type imports for importing types (@IvanGoncharov)
• #3098 mapAsyncIterator: simplify test case (@IvanGoncharov)
• #3099 OverlappingFieldsCanBeMergedRule: refactor 'PairSet' (@IvanGoncharov)
• #3100 Flow: add missing arg name in function type (@IvanGoncharov)
• #3101 Flow: remove unnecessary '%checks' (@IvanGoncharov)
• #3105 getLocation: use more explicit matchAll instead of RegExp.exec (@IvanGoncharov)
• #3108 OverlappingFieldsCanBeMergedRule: futher simplify 'PairSet' (@IvanGoncharov)
• #3115 Refactor Lexer (@leebyron)
• #3118 TS: switch all imports to type imports (@IvanGoncharov)
• #3120 subscription-test: add missing await (@IvanGoncharov)
• #3122 valueFromAST: drop unnecessary 'void' since mixed already includes it (@IvanGoncharov)
• #3123 visitor: convert arguments descriptions to JSDoc comments (@IvanGoncharov)
• #3124 src/type: correct order of import/exports (@IvanGoncharov)
• #3125 TypeInfo: use explicit type for getFieldDef arg (@IvanGoncharov)
• #3128 definition: Remove deprecation comment (@IvanGoncharov)
• #3130 coerceInputValue: add missing argument in function call (@IvanGoncharov)
• #3159 execute: Rename resolveField function and update comments (@yaacovCR)
• #3160 versions-test: add support for experimental pre-releases (@IvanGoncharov)
• #3166 SingleFieldSubscriptionsRule-test: extract test schema from harness (@IvanGoncharov)
• #3167 SingleFieldSubscriptionsRule: fix order of imports (@IvanGoncharov)
• #3175 TypeInfo-test: remove dependency on harness schema for validation tests (@IvanGoncharov)
• #3176 KnownDirectivesRule-test: remove dependency on harness schema (@IvanGoncharov)
• #3177 kitchenSinkQuery: add '@onVariableDefinition' directive (@IvanGoncharov)
• #3179 KnownDirectivesRule-test: add tests for missing directive locations (@IvanGoncharov)
• #3180 simplify validation harness by extracting union types into approriate… (@IvanGoncharov)
• #3181 Switch tests & internal funcs to accept ReadonlyArrays (@IvanGoncharov)
• #3187 refactor: collectFields to separate utility (@yaacovCR)
• #3189 instanceOf: add additional tests (@IvanGoncharov)
• #3194 Replace 'Idx' with 'Index' in variable names (@IvanGoncharov)
• #3264 lexer: Remove superfluous statement in readDigits (@Cito)
• #3277 ESLint: enable some of the rules previously blocked by TS conversion (@IvanGoncharov)
• #3284 VariablesAreInputTypesRule: add test for ignoring unknown types (@IvanGoncharov)
• #3287 assertValidName: share character classes with lexer (@IvanGoncharov)
• #3290 Remove unnecessary Promise.resolve and Promise.reject (@IvanGoncharov)
• #3293 Align calls of buildExecutionContext (@yaacovCR)
• #3307 Reuse groupBy in validation rules (@IvanGoncharov)
• #3309 Move deprecated SubscriptionArgs to 'src/subscription' (@IvanGoncharov)
• #3310 expectJSON: return custom object instead of expect (@IvanGoncharov)
• #3322 Lexer: use standard JS functions to handle Unicode (@IvanGoncharov)
• #3324 GraphQLError-test: merge check of source with rest of the properties (@IvanGoncharov)
• #3336 GraphQLError: Add test to check order of fields in JSON.stringify (@IvanGoncharov)
• #3345 version-test: fix validation of versionInfo.preReleaseTag (@IvanGoncharov)

Internal 🏠

59 PRs were merged

• #2478 jsutils: add test for Path functions (@Cito)
• #2831 build: add support for experimental releases (@IvanGoncharov)
• #2836 CI: test on node 15 (@IvanGoncharov)
• #2837 Flow: remove support for measuring Flow coverage (@IvanGoncharov)
• #2838 TS: exclude integration tests from root tsconfig.json (@IvanGoncharov)
• #2840 resources: use named groups in RegExp (@IvanGoncharov)
• #2881 ci: migrate master to main (@saihaj)
• #2886 Use correct flags for rmdir/mkdir functions (@IvanGoncharov)
• #2891 benchmark: fix temp dir creation (@IvanGoncharov)
• #2908 Add EasyCLA instructions, replace FB CLA (@brianwarner)
• #2924 cspell: disable progress and convert config to YAML (@IvanGoncharov)
• #2925 TS: Enable integrations tests for extending GraphQL*Extensions types (@IvanGoncharov)
• #2929 integrationTests: always build npm packages before tests (@IvanGoncharov)
• #2954 build: use node12 tsconfig (@saihaj)
• #2962 flow-typed: fix unresolved types (@IvanGoncharov)
• #2968 ESLint: Allow 'async' functions (@IvanGoncharov)
• #2969 ESLint: cleanup rule overrides (@IvanGoncharov)
• #2970 Remove override of node/global-require rule for resources dir (@IvanGoncharov)
• #2971 benchmark: refactor args parsing code (@IvanGoncharov)
• #2972 Remove deprecated rmdirSync usage from internal scripts (@IvanGoncharov)
• #2978 internal: simplify 'exec' function (@IvanGoncharov)
• #2982 benchmark: use more readable spelling of V8 flag (@IvanGoncharov)
• #3000 feat: add .d.ts for jsutils (@saihaj)
• #3007 TS integration test: add check for possibility to refine extension types (@IvanGoncharov)
• #3018 build: run prettier on generated files (@IvanGoncharov)
• #3019 inline-invariant: switch to use false instead of 0 (@IvanGoncharov)
• #3021 gen-version: prettify source code (@IvanGoncharov)
• #3036 integrationTests: test package with TS 4.2 (@IvanGoncharov)
• #3054 Test with Node v16 (@IvanGoncharov)
• #3078 babel: Stop transpiling optional chaining operator (@IvanGoncharov)
• #3080 Workaround for Flow issue with 'String.raw' (@IvanGoncharov)
• #3102 eslintrc: fix spelling mistake in comment (@IvanGoncharov)
• #3103 ESLint: fix config for '@typescript-eslint/no-throw-literal' (@IvanGoncharov)
• #3112 gen-version: fix notice comment was polluting 'version.d.ts' (@IvanGoncharov)
• #3119 Remove empty lines from '*.d.ts' files (@IvanGoncharov)
• #3126 Restrict TS to files inside src (@IvanGoncharov)
• #3127 Disable '@typescript-eslint/prefer-readonly' (@IvanGoncharov)
• #3143 TS: Enable strict mode (@leebyron)
• #3144 ESLint: fail npm run lint if any warnings are reported (@IvanGoncharov)
• #3151 CI: Add new job to check health of package-lock.json (@IvanGoncharov)
• #3153 Fix typescript-4.3 version in the integration tests (@kyarik)
• #3154 tsconfig.json: enable 'isolatedModules' (@IvanGoncharov)
• #3157 package.json: fix generating release commit (@IvanGoncharov)
• #3158 allows passing --watch to npm run testonly (@yaacovCR)
• #3161 build-npm: correctly set NPM tag on experimental pre-releases (@IvanGoncharov)
• #3173 fix: broken link to prettier rules (@saihaj)
• #3174 ci: use update 'actions/setup-node' to v2 (@IvanGoncharov)
• #3188 integrationTests: Add test for webpack (@IvanGoncharov)
• #3190 build-npm: fix assert message about not supported tag (@IvanGoncharov)
• #3207 ci: generate diff for NPM package (@IvanGoncharov)
• #3209 Fix failing CI on main (@IvanGoncharov)
• #3262 integrationTests: small refactoring (@IvanGoncharov)
• #3263 integrationTests: increase timeout to 60s (@IvanGoncharov)
• #3280 integrationTests/ts: split tests into separate files (@IvanGoncharov)
• #3289 integrationTests/ts: Simplify extensions tests (@IvanGoncharov)
• #3304 README: remove credits for *.d.ts files (@IvanGoncharov)
• #3329 Fix release instructions (@yaacovCR)
• #3330 use GITHUB_TOKEN for publishing branches (@yaacovCR)
• #3331 gitpublish.sh: Check if GITHUB_ACTOR is set + refactoring (@yaacovCR)

Dependency 📦

20 PRs were merged

• #2835 Update deps (@IvanGoncharov)
• #2844 Update deps (@IvanGoncharov)
• #2850 Update deps (@IvanGoncharov)
• #2884 Update deps (@IvanGoncharov)
• #2890 Update deps (@IvanGoncharov)
• #2922 Update deps (@IvanGoncharov)
• #2927 build: commit package-lock for drop support node10 (@saihaj)
• #2960 Update deps (@IvanGoncharov)
• #2961 flow-typed: update Mocha typings (@IvanGoncharov)
• #2993 Update deps (@IvanGoncharov)
• #3017 Update deps (@IvanGoncharov)
• #3020 Update deps (@IvanGoncharov)
• #3037 Update deps (@IvanGoncharov)
• #3057 Update deps (@IvanGoncharov)
• #3094 Update prettier to 2.3 (@IvanGoncharov)
• #3149 Update deps (@IvanGoncharov)
• #3206 Update deps (@IvanGoncharov)
• #3244 Update deps (@IvanGoncharov)
• #3276 Update deps (@IvanGoncharov)
• #3320 Update deps (@IvanGoncharov)

Committers: 18

• Arda TANRIKULU(@ardatan)
• Benjie Gillam(@benjie)
• Brian Warner(@brianwarner)
• Christoph Zwerschke(@Cito)
• Ivan Goncharov(@IvanGoncharov)
• Jan Melcher(@Yogu)
• Janic Duplessis(@janicduplessis)
• null(@jjangga0214)
• Kei Kamikawa(@Code-Hex)
• Laurin Quast(@n1ru4l)
• Lee Byron(@leebyron)
• Martin Trobäck(@lekoaf)
• Rob Richard(@robrichard)
• Saihajpreet Singh(@saihaj)
• Tim Griesser(@tgriesser)
• Trevor Scheer(@trevor-scheer)
• Yaacov Rydzinski (@yaacovCR)
• Yaroslav Kukytsyak(@kyarik)