Skip to main content
Check if two objects are deeply equal. This is used internally by expect().toEqual() in Bun’s test runner.
/icons/typescript.svgindex.ts
const a = {a: 1, b: 2, c: {d: 3}};
const b = {a: 1, b: 2, c: {d: 3}};

Bun.deepEquals(a, b); // true
Pass true as a third argument to enable strict mode. This is used internally by expect().toStrictEqual() in Bun’s test runner. The following examples would return true in non-strict mode but false in strict mode.
/icons/typescript.svgindex.ts
// undefined values
Bun.deepEquals({}, {a: undefined}, true); // false

// undefined in arrays
Bun.deepEquals(['asdf'], ['asdf', undefined], true); // false

// sparse arrays
Bun.deepEquals([, 1], [undefined, 1], true); // false

// object literals vs instances w/ same properties
class Foo {
	a = 1;
}
Bun.deepEquals(new Foo(), {a: 1}, true); // false
See Docs > API > Utils for more useful utilities.
⌘I