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LibJS: Implement correct object property ordering

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This commit introduces a way to get an object's own properties in the
correct order. The "correct order" for JS object properties is first all
array-like index properties (numeric keys) sorted by insertion order,
followed by all string properties sorted by insertion order.

Objects also now print correctly in the repl! Before this commit:

courage ~/js-tests $ js
> ({ foo: 1, bar: 2, baz: 3 })
{ bar: 2, foo: 1, baz: 3 }

After:

courage ~/js-tests $ js
> ({ foo: 1, bar: 2, baz: 3 })
{ foo: 1, bar: 2, baz: 3 }
This commit is contained in:
mattco98 2020-04-28 19:19:31 -07:00 • committed by Andreas Kling
parent 58f6f50de4
commit 95abcc3722
9 changed files with 41 additions and 9 deletions
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1
Libraries/LibJS/Runtime/Object.cpp
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@ -34,6 +34,7 @@
#include <LibJS/Runtime/NativeProperty.h>
#include <LibJS/Runtime/Object.h>
#include <LibJS/Runtime/Shape.h>
#include <LibJS/Runtime/StringObject.h>
#include <LibJS/Runtime/Value.h>
namespace JS {