The deno core exposes an op_panic in the base runtime which can force a panic in the runtime's containing thread

[rscarson]

See [rscarson/rustyscript/issues/174]

A new review of available-by-default ops has revealed Deno.core.ops.op_panic, which when called forces a panic in the thread containing the runtime, violating the sandbox and possibly triggering a DOS.

This can be fixed by stubbing out the panic op:

Deno.core.ops.op_panic = (msg) => { throw new Error(msg) };