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missing normalization improvement for has #1578

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merged 1 commit into from
Sep 16, 2021
Merged

missing normalization improvement for has #1578

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13 changes: 13 additions & 0 deletions boa/src/builtins/map/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -411,6 +411,19 @@ impl Map {
) -> JsResult<JsValue> {
let key = args.get_or_undefined(0);

const JS_ZERO: &JsValue = &JsValue::Rational(0f64);

let key = match key {
JsValue::Rational(r) => {
if r.is_zero() {
JS_ZERO
} else {
key
}
}
_ => key,
};

// 1. Let M be the this value.
if let JsValue::Object(ref object) = this {
// 2. Perform ? RequireInternalSlot(M, [[MapData]]).
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