tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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testDirectProxyGetOwnPropertyNames4.js (301B)

      1 load(libdir + "asserts.js");
      2 
      3 // Throw TypeError if trap returns a property key multiple times.
      4 
      5 var handler = { ownKeys : () => [ 'foo', 'foo' ] };
      6 for (let p of [new Proxy({}, handler), Proxy.revocable({}, handler).proxy])
      7    assertThrowsInstanceOf(() => Object.getOwnPropertyNames(p), TypeError);