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LibJS: Implement Temporal.Instant.prototype.epochMilliseconds
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4 changed files with 55 additions and 0 deletions
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@ -24,6 +24,7 @@ void InstantPrototype::initialize(GlobalObject& global_object)
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auto& vm = this->vm();
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define_native_accessor(vm.names.epochSeconds, epoch_seconds_getter, {}, Attribute::Configurable);
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define_native_accessor(vm.names.epochMilliseconds, epoch_milliseconds_getter, {}, Attribute::Configurable);
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// 8.3.2 Temporal.Instant.prototype[ @@toStringTag ], https://tc39.es/proposal-temporal/#sec-temporal.instant.prototype-@@tostringtag
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define_direct_property(*vm.well_known_symbol_to_string_tag(), js_string(vm.heap(), "Temporal.Instant"), Attribute::Configurable);
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@ -61,4 +62,23 @@ JS_DEFINE_NATIVE_FUNCTION(InstantPrototype::epoch_seconds_getter)
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return Value((double)s.to_base(10).to_int<i64>().value());
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}
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// 8.3.4 get Temporal.Instant.prototype.epochMilliseconds, https://tc39.es/proposal-temporal/#sec-get-temporal.instant.prototype.epochmilliseconds
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JS_DEFINE_NATIVE_FUNCTION(InstantPrototype::epoch_milliseconds_getter)
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{
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// 1. Let instant be the this value.
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// 2. Perform ? RequireInternalSlot(instant, [[InitializedTemporalInstant]]).
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auto* instant = typed_this(global_object);
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if (vm.exception())
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return {};
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// 3. Let ns be instant.[[Nanoseconds]].
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auto& ns = instant->nanoseconds();
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// 4. Let ms be RoundTowardsZero(ℝ(ns) / 10^6).
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auto [ms, _] = ns.big_integer().divided_by(Crypto::SignedBigInteger::create_from(1'000'000));
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// 5. Return 𝔽(ms).
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return Value((double)ms.to_base(10).to_int<i64>().value());
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}
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}
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@ -20,6 +20,7 @@ public:
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private:
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JS_DECLARE_NATIVE_FUNCTION(epoch_seconds_getter);
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JS_DECLARE_NATIVE_FUNCTION(epoch_milliseconds_getter);
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};
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}
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