diff options
Diffstat (limited to 'Userland/Libraries/LibJS/Runtime/Value.cpp')
| -rw-r--r-- | Userland/Libraries/LibJS/Runtime/Value.cpp | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Userland/Libraries/LibJS/Runtime/Value.cpp b/Userland/Libraries/LibJS/Runtime/Value.cpp index 062e2ad59e..e66135e3e7 100644 --- a/Userland/Libraries/LibJS/Runtime/Value.cpp +++ b/Userland/Libraries/LibJS/Runtime/Value.cpp @@ -2181,20 +2181,33 @@ bool same_value_non_numeric(Value lhs, Value rhs) // 7.2.15 IsStrictlyEqual ( x, y ), https://tc39.es/ecma262/#sec-isstrictlyequal bool is_strictly_equal(Value lhs, Value rhs) { + // 1. If Type(x) is different from Type(y), return false. if (!same_type_for_equality(lhs, rhs)) return false; + // 2. If x is a Number, then if (lhs.is_number()) { + // a. Return Number::equal(x, y). + + // 6.1.6.1.13 Number::equal ( x, y ), https://tc39.es/ecma262/#sec-numeric-types-number-equal + // 1. If x is NaN, return false. + // 2. If y is NaN, return false. if (lhs.is_nan() || rhs.is_nan()) return false; + // 3. If x is the same Number value as y, return true. + // 4. If x is +0𝔽 and y is -0𝔽, return true. + // 5. If x is -0𝔽 and y is +0𝔽, return true. if (lhs.as_double() == rhs.as_double()) return true; + // 6. Return false. return false; } + // FIXME: This should be handled in SameValueNonNumber now (formerly SameValueNonNumeric) if (lhs.is_bigint()) return lhs.as_bigint().big_integer() == rhs.as_bigint().big_integer(); + // 3. Return SameValueNonNumber(x, y). return same_value_non_numeric(lhs, rhs); } |