assert_subprinter_registered('SpiderMonkey', 'JS::Value')
run_fragment('jsval.simple')
assert_pretty('fortytwo', '$JS::Int32Value(42)')
assert_pretty('fortytwoD', '$JS::DoubleValue(42)')
assert_pretty('negone', '$JS::Int32Value(-1)')
assert_pretty('undefined', '$JS::UndefinedValue()')
assert_pretty('null', '$JS::NullValue()')
assert_pretty('js_true', '$JS::BooleanValue(true)')
assert_pretty('js_false', '$JS::BooleanValue(false)')
assert_pretty('elements_hole', '$JS::MagicValue(JS_ELEMENTS_HOLE)')
assert_pretty('empty_string', '$JS::Value("")')
assert_pretty('friendly_string', '$JS::Value("Hello!")')
assert_pretty('symbol', '$JS::Value(Symbol.for("Hello!"))')
assert_pretty('bi', '$JS::BigIntValue()')
assert_pretty('global', '$JS::Value((JSObject *) [object global] delegate)')
assert_pretty('onehundredthirtysevenonehundredtwentyeighths', '$JS::DoubleValue(1.0703125)')