| 123456789101112131415 | module.exports = prefixvar npm = require('./npm.js')var output = require('./utils/output.js')prefix.usage = 'npm prefix [-g]'function prefix (args, silent, cb) {  if (typeof cb !== 'function') {    cb = silent    silent = false  }  if (!silent) output(npm.prefix)  process.nextTick(cb.bind(this, null, npm.prefix))}
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