refactor(ui): finding 2 — delete packages/ui use-controlled-state (zero importers)

apps/web has its own copy with 3 importers; the packages/ui copy had none.
Deletes the hook and its 78-line test.

Claude-Session: https://claude.ai/code/session_012Bnvt1MghwHj4qQRxuQUGa
This commit is contained in:
Amruth Pillai
2026-07-04 21:57:20 +02:00
parent eab7534ea4
commit a149e614a7
2 changed files with 0 additions and 108 deletions
@@ -1,78 +0,0 @@
import { act, renderHook } from "@testing-library/react";
import { describe, expect, it, vi } from "vitest";
import { useControlledState } from "./use-controlled-state";
describe("useControlledState", () => {
it("returns the defaultValue when uncontrolled", () => {
const { result } = renderHook(() => useControlledState({ defaultValue: 0 }));
expect(result.current[0]).toBe(0);
});
it("returns the value when controlled", () => {
const { result } = renderHook(() => useControlledState({ value: 42, defaultValue: 0 }));
expect(result.current[0]).toBe(42);
});
it("updates internal state when value prop changes (controlled)", () => {
const { result, rerender } = renderHook(({ value }: { value: number }) => useControlledState({ value }), {
initialProps: { value: 1 },
});
expect(result.current[0]).toBe(1);
rerender({ value: 2 });
expect(result.current[0]).toBe(2);
});
it("updates state via setter when uncontrolled", () => {
const { result } = renderHook(() => useControlledState<number>({ defaultValue: 0 }));
act(() => {
result.current[1](10);
});
expect(result.current[0]).toBe(10);
});
it("calls onChange when state is updated", () => {
const onChange = vi.fn();
const { result } = renderHook(() => useControlledState<string>({ defaultValue: "a", onChange }));
act(() => {
result.current[1]("b");
});
expect(onChange).toHaveBeenCalledWith("b");
});
it("forwards extra args to onChange", () => {
const onChange = vi.fn();
const { result } = renderHook(() => useControlledState<string, [number, boolean]>({ defaultValue: "a", onChange }));
act(() => {
result.current[1]("b", 42, true);
});
expect(onChange).toHaveBeenCalledWith("b", 42, true);
});
it("does not call onChange when value prop changes from outside", () => {
const onChange = vi.fn();
const { rerender } = renderHook(({ value }: { value: number }) => useControlledState<number>({ value, onChange }), {
initialProps: { value: 1 },
});
rerender({ value: 2 });
// onChange is only called via setState, not the controlled-value sync effect.
expect(onChange).not.toHaveBeenCalled();
});
it("returns the same setter reference when onChange is stable", () => {
const onChange = vi.fn();
const { result, rerender } = renderHook(
({ value }: { value: number }) => useControlledState<number>({ value, onChange }),
{ initialProps: { value: 1 } },
);
const initialSetter = result.current[1];
rerender({ value: 2 });
expect(result.current[1]).toBe(initialSetter);
});
});
@@ -1,30 +0,0 @@
import { useCallback, useState } from "react";
interface CommonControlledStateProps<T> {
value?: T;
defaultValue?: T;
}
type UseControlledStateProps<T, Rest extends unknown[] = []> = CommonControlledStateProps<T> & {
onChange?: (value: T, ...args: Rest) => void;
};
export function useControlledState<T, Rest extends unknown[] = []>(
props: UseControlledStateProps<T, Rest>,
): readonly [T, (next: T, ...args: Rest) => void] {
const { value, defaultValue, onChange } = props;
const isControlled = value !== undefined;
const [internalState, setInternalState] = useState<T>(value !== undefined ? value : (defaultValue as T));
const state = isControlled ? (value as T) : internalState;
const setState = useCallback(
(next: T, ...args: Rest) => {
if (!isControlled) setInternalState(next);
onChange?.(next, ...args);
},
[isControlled, onChange],
);
return [state, setState] as const;
}