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Implement array.flat and array.flatMap

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Self-hosted implementation that adds both functions and adds them to
@@unscopables as specced in ES2019.
Resolves #1095
This commit is contained in:
wolfbeast 2019-05-19 23:11:17 +02:00 • committed by Roy Tam
commit 3538814b92
5 changed files with 120 additions and 1 deletions
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7
js/src/jsarray.cpp
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@ -3169,6 +3169,11 @@ static const JSFunctionSpec array_methods[] = {
/* ES7 additions */
JS_SELF_HOSTED_FN("includes", "ArrayIncludes", 2,0),
/* ES2019 additions */
JS_SELF_HOSTED_FN("flat", "ArrayFlat", 0,0),
JS_SELF_HOSTED_FN("flatMap", "ArrayFlatMap", 1,0),
JS_FS_END
};
@ -3333,6 +3338,8 @@ array_proto_finish(JSContext* cx, JS::HandleObject ctor, JS::HandleObject proto)
!DefineProperty(cx, unscopables, cx->names().fill, value) ||
!DefineProperty(cx, unscopables, cx->names().find, value) ||
!DefineProperty(cx, unscopables, cx->names().findIndex, value) ||
!DefineProperty(cx, unscopables, cx->names().flat, value) ||
!DefineProperty(cx, unscopables, cx->names().flatMap, value) ||
!DefineProperty(cx, unscopables, cx->names().includes, value) ||
!DefineProperty(cx, unscopables, cx->names().keys, value) ||
!DefineProperty(cx, unscopables, cx->names().values, value))