Current File : /home/vacivi36/vittasync.vacivitta.com.br/vittasync/node/test/parallel/test-v8-flags.js
'use strict';
require('../common');
const assert = require('assert');
const v8 = require('v8');
const vm = require('vm');
// Note: changing V8 flags after an isolate started is not guaranteed to work.
// Specifically here, V8 may cache compiled scripts between the flip of the
// flag. We use a different script each time to work around this problem.
v8.setFlagsFromString('--allow_natives_syntax');
assert(eval('%IsSmi(42)'));
assert(vm.runInThisContext('%IsSmi(43)'));
v8.setFlagsFromString('--noallow_natives_syntax');
assert.throws(function() { eval('%IsSmi(44)'); },
/^SyntaxError: Unexpected token '%'$/);
assert.throws(function() { vm.runInThisContext('%IsSmi(45)'); },
/^SyntaxError: Unexpected token '%'$/);
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