2.1.55 [ECMA-262/9:2018] Section 24.4 The Atomics Object

V0219: The Atomics object is not supported

The specification states:

 18.4.1 Atomics
     See 24.4.
 24.4 The Atomics Object
     The Atomics object:
         • is the intrinsic object %Atomics%.
     ... When used with discipline, the Atomics functions allow multi-agent programs that 
     communicate through shared memory to execute in a well-understood order even on 
     parallel CPUs. ...

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The Atomics object is not supported.