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fix: add rest.length > 0 guard to deepStrictAssert #41

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Merged
kakasoo merged 1 commit into from
Feb 20, 2026
Merged

fix: add rest.length > 0 guard to deepStrictAssert #41

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4 changes: 2 additions & 2 deletions src/functions/DeepStrictAssert.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -33,7 +33,7 @@ export const deepStrictAssert =
if (input instanceof Array) {
const elements = input.map((element) => {
if (first in element) {
if (typeof element[first] === 'object' && element[first] !== null) {
if (typeof element[first] === 'object' && element[first] !== null && rest.length > 0) {
return { [first]: traverse(element[first], rest) };
}

Expand All @@ -46,7 +46,7 @@ export const deepStrictAssert =
return elements;
} else {
if (first in input) {
if (typeof input[first] === 'object' && input[first] !== null) {
if (typeof input[first] === 'object' && input[first] !== null && rest.length > 0) {
return { [first]: traverse(input[first], rest) };
}
return { [first]: input[first] };
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8 changes: 8 additions & 0 deletions test/features/DeepStrictAssert.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -105,6 +105,14 @@ export function test_functions_deepStrictAssert_accesses_nested_object_property(
typia.assertEquals(deepStrictAssert(original)('user.name'));
}

/**
* Tests that deepStrictAssert can access a top-level key whose value is a plain object.
*/
export function test_functions_deepStrictAssert_accesses_top_level_object_property() {
const original = typia.random<SimpleNested>();
typia.assertEquals(deepStrictAssert(original)('user'));
}

/**
* Tests that deepStrictAssert throws when accessing a non-existent key.
*/
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