Oleksandr Tarasiuk

⚡ Open to new opportunities

Open-source contributor focused on compilers, programming languages, and developer tooling.

Currently contributing to TypeScript and Clang/LLVM.

              

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TypeScript

2018 – present | Commits | Pull requests

Contributions span language features, type-system enhancements, control-flow analysis, code generation, and language services.

Highlights

Latest		a8ad787	Declaration emit for expando functions
		b47180a	Const enum erasure after inlining
		ae49b35	erasableSyntaxOnly compiler option
		e186b22	Preserve @__PURE__ annotations in emit
		36a415a	Quick fix for implementing interfaces
		9b13170	Completion snippets
5.6	📝 Release Notes	#57146	Correct override checks on computed properties
5.5	📝 Release Notes	#57207	JSDoc @import tag
5.4	📝 Release Notes	#56034	Checked import attributes & assertions
	📝 Release Notes	#56411	Quick fix for adding missing parameters
5.3	📝 Release Notes	#54242	Import attributes
5.2	📝 Release Notes	#54657	Decorator metadata
5.1	📝 Release Notes	#53799	Namespaced JSX attributes
5.0	📝 Release Notes	#51753	@satisfies support in JSDoc
4.9	📝 Release Notes	#46827	The satisfies operator
	📝 Release Notes	#50626	Checks for equality on NaN
	📝 Release Notes	#51227	Go-to-definition on return keywords
4.7	📝 Release Notes	#45974	Control-flow analysis for bracketed element access
4.6	📝 Release Notes	#47467	Remove unnecessary void 0 argument in react-jsx emit
	📝 Release Notes	#47257	Check @param names in JSDoc method documentation
4.2	📝 Release Notes	#40260	Uncalled function checks in && / || expressions
	📝 Release Notes	#41378	Destructured variables explicitly marked as unused (_)
	📝 Release Notes	#41215	Quick fix: declare missing helper function
3.9	📝 Release Notes	#36402	Uncalled function checks in ternary conditionals
	📝 Release Notes	#37436	Bulk quick fix for invalid } and > in JSX text positions
3.2	📝 Release Notes	#28313	More specific error messages for assignments to const/read-only properties

Clang / LLVM

2024 – present | Commits | Pull requests

Contributions span language features, language semantics, standards conformance, frontend infrastructure, and compile-time performance.

Highlights

Latest	#216555	Support friend declarations with a dependent nested-name-specifier
23.1.0	#199991	C23 wN and wfN length modifiers
	#201098	C23 H, D, DD length modifiers
	#177865	C23: prevent incorrect rejection of auto with reordered declaration specifiers
	#185322	Allow GNU attributes before bit-field width in member declarators
	#187859	Parser recovery for invalid static_assert string messages
	#182770	C23: constexpr struct member access in constant expressions
	#176560	Speed up -Wassign-enum via enumerator caching
	#135573	Enhance loop analysis for variable changes inside lambdas
22.1.0	#163469	C23: disallow constexpr with auto and explicit type
	#172211	C23: treat fixed-underlying enum constants as the enumerated type
	#165919	Fix false-positive lambda shadow diagnostics in explicit object member functions
	#148988	Static analyzer: support parenthesized list initialization (CXXParenListInitExpr)
21.1.0	#138519	Show attribute namespace in diagnostics
	#140629	Add typo correction for unknown attribute names
	#141305	Add fix-it hints for unknown attributes
	#136328	Disallow attributes before extern template declarations
	#127061	Emit -Wunused-variable for unused structured bindings without [[maybe_unused]]
	#127336	New -Wshift-bool: warn on shifting of bool values
	#124920	Disallow attributes on void parameters
20.1.0	#106036	Restrict use of attribute names reserved by the C++ standard
	#113575	Enhance handling of [[deprecated]] diagnostics for local variables
	#114813	Eliminate shadow warnings for parameters using deducing this
	#115786	Attach source location to deduced type in trailing return without auto
	#121419	Emit -Wignored-qualifiers for cv-qualified base class types
	#104677	Warn on discarded [[nodiscard]] results after C-style cast
	#101853	Strengthen checks for main per [basic.start.main] p3
19.1.0	#94123	C++23: update constexpr diagnostics for missing return per P2448

typescript-eslint

2019 – 2022 | Commits | Pull requests

Contributions span lint rules, type-aware analysis, rule configuration, and developer tooling.

Highlights

✨	#762	New quotes extension rule
✨	#1183	New no-extra-non-null-assertion rule
✨	#1237	New no-extra-semi extension rule
✨	#1331	New no-throw-literal extension rule
✨	#1375	New no-implied-eval rule
✨	#1418	New default-param-last rule
⚙️	#654	[array-type] — default and readonly options
⚙️	#1242	[no-use-before-define] — option to ignore enums
⚙️	#3515	[prefer-literal-enum-member] — allowBitwiseExpressions option
⚙️	#3709	[restrict-template-expressions] — allowRegExp option