⚗️ Add instrumentConstructor utility#4714

Merged

bdibon merged 23 commits into

mainfrom

boris.dibon/ws-1-instrument-method-constructor

Jun 10, 2026

Commits on Jun 10, 2026

✨ Add constructor support to instrumentMethod

bdibon
and
cursoragent
committed
👌 Handle subclassing instrumentation
bdibon
committed
✅ Test after stop() behavior
bdibon
committed
👌 Preserve static members
bdibon
committed
👌 Preserve original new.target when instrumentation is called directly
bdibon
committed
👌 Replace WebSocket occurences with MyClass
bdibon
committed
👌 Merge duplicated code branches
bdibon
committed
👌 Separate constructor from method instrumentation logic
bdibon
committed
👌 Preserve new.target when constructing a subclass of the instrumented method after stop
bdibon
committed
👌 Outline limitation of static members preservation
bdibon
committed
👌 Preserve prototype.constructor
bdibon
committed
👌 Do not instrument calls when class constructor is called without new
bdibon
committed
👌 Preserve original.prototype descriptor on instrumentation
bdibon
committed
🎨 Improve code structure
bdibon
committed
👌 Add "instrumented constructor" type to handling stack
bdibon
committed
👌 Test parity with instrumentMethod
bdibon
committed
♻️ Simplify code to our use case
bdibon
committed
👌 Improve naming convention for instrumentConstructor
bdibon
committed
✅ Add test for constructor's prototype descriptor writable value
bdibon
committed
👌 Test after stop leaves third party prototype.constructor
bdibon
committed
👌 Improve tests fixture
bdibon
committed
👌 Improve readability
bdibon
committed
👌 Reuse replaceWithInstrumentation in preserveConstructorShape
bdibon
committed

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⚗️ Add instrumentConstructor utility#4714

⚗️ Add instrumentConstructor utility#4714
bdibon merged 23 commits into
mainfrom
boris.dibon/ws-1-instrument-method-constructor

Commits on Jun 10, 2026

✨ Add constructor support to instrumentMethod

👌 Handle subclassing instrumentation

✅ Test after stop() behavior

👌 Preserve static members

👌 Preserve original new.target when instrumentation is called directly

👌 Replace WebSocket occurences with MyClass

👌 Merge duplicated code branches

👌 Separate constructor from method instrumentation logic

👌 Preserve new.target when constructing a subclass of the instrumented method after stop

👌 Outline limitation of static members preservation

👌 Preserve prototype.constructor

👌 Do not instrument calls when class constructor is called without new

👌 Preserve original.prototype descriptor on instrumentation

🎨 Improve code structure

👌 Add "instrumented constructor" type to handling stack

👌 Test parity with instrumentMethod

♻️ Simplify code to our use case

👌 Improve naming convention for instrumentConstructor

✅ Add test for constructor's prototype descriptor writable value

👌 Test after stop leaves third party prototype.constructor

👌 Improve tests fixture

👌 Improve readability

👌 Reuse replaceWithInstrumentation in preserveConstructorShape