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- var cp = require('child_process')
- var fs = require('fs')
- var path = require('path')
- module.exports = function arch () {
-
- if (process.arch === 'x64') {
- return 'x64'
- }
-
- if (process.platform === 'darwin') {
- return 'x64'
- }
-
- if (process.platform === 'win32') {
- var useEnv = false
- try {
- useEnv = !!(process.env.SYSTEMROOT && fs.statSync(process.env.SYSTEMROOT))
- } catch (err) {}
- var sysRoot = useEnv ? process.env.SYSTEMROOT : 'C:\\Windows'
-
- var isWOW64 = false
- try {
- isWOW64 = !!fs.statSync(path.join(sysRoot, 'sysnative'))
- } catch (err) {}
- return isWOW64 ? 'x64' : 'x86'
- }
-
- if (process.platform === 'linux') {
- var output = cp.execSync('getconf LONG_BIT', { encoding: 'utf8' })
- return output === '64\n' ? 'x64' : 'x86'
- }
-
- return 'x86'
- }
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