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PONodeJS vm.runInThisContext() and lack of __filename
 

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    <p>Whenever I run <a href="http://nodejs.org/docs/v0.4.8/api/vm.html#vm.runInThisContext" rel="nofollow"><code>vm.runInThisContext(code, filename)</code></a>, the code I ran reports <a href="http://nodejs.org/docs/v0.4.8/api/globals.html#__filename" rel="nofollow"><code>__filename</code></a> and <a href="http://nodejs.org/docs/v0.4.8/api/globals.html#__dirname" rel="nofollow"><code>__dirname</code></a> as <code>undefined</code>.</p> <p>This also leads to the situation that any <code>fs.readFile</code> and such calls will not work with relative paths. Actually to be exact, file system functions do not work at all even if I feed them a hard-coded absolute path to an existing file.</p> <p>For example, this will do nothing:</p> <pre><code>var fs = require('fs'); fs.readFile('/home/test/file.txt', function(e, data) { if (e) {throw e;} console.log('here i am'); }); </code></pre> <p>What happens is that nothing happens. If I run the code in normal NodeJS code then it outputs "here i am", but if I run that code through the <code>vm</code> module, then nothing happens. The callback is simply never called, because for some reason it can't locate the file and there does not seem to be any timeouts either.</p> <p>How can I make Node to understand that the executed code is some "file" and also make the <code>fs</code> module functions to work? I tried specifying the second parameter to <a href="http://nodejs.org/docs/v0.4.8/api/vm.html#vm.runInThisContext" rel="nofollow"><code>vm.runInThisContext(code, filename)</code></a>, but I see no difference. It almost looks that Node doesn't care about the second parameter.</p>
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    1. CODo you mean require.paths.unshift => http://stackoverflow.com/questions/5390886/nodejs-require-paths-resolve-problem
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    2. COI'm not touching anything related to requires.
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    3. COyou mean that vm.runInThisContext(code, '/home/full/path/to/file.js') does not work??
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