switch to vuepress

1 files changed, 59 insertions, 0 deletions

diff --git a/node_modules/arch/index.js b/node_modules/arch/index.js
new file mode 100644
index 00000000..17455e02
--- /dev/null
+++ b/node_modules/arch/index.js
@@ -0,0 +1,59 @@
+var cp = require('child_process')
+var fs = require('fs')
+var path = require('path')
+
+/**
+ * Returns the operating system's CPU architecture. This is different than
+ * `process.arch` or `os.arch()` which returns the architecture the Node.js (or
+ * Electron) binary was compiled for.
+ */
+module.exports = function arch () {
+  /**
+   * The running binary is 64-bit, so the OS is clearly 64-bit.
+   */
+  if (process.arch === 'x64') {
+    return 'x64'
+  }
+
+  /**
+   * All recent versions of Mac OS are 64-bit.
+   */
+  if (process.platform === 'darwin') {
+    return 'x64'
+  }
+
+  /**
+   * On Windows, the most reliable way to detect a 64-bit OS from within a 32-bit
+   * app is based on the presence of a WOW64 file: %SystemRoot%\SysNative.
+   * See: https://twitter.com/feross/status/776949077208510464
+   */
+  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'
+
+    // If %SystemRoot%\SysNative exists, we are in a WOW64 FS Redirected application.
+    var isWOW64 = false
+    try {
+      isWOW64 = !!fs.statSync(path.join(sysRoot, 'sysnative'))
+    } catch (err) {}
+
+    return isWOW64 ? 'x64' : 'x86'
+  }
+
+  /**
+   * On Linux, use the `getconf` command to get the architecture.
+   */
+  if (process.platform === 'linux') {
+    var output = cp.execSync('getconf LONG_BIT', {encoding: 'utf8'})
+    return output === '64\n' ? 'x64' : 'x86'
+  }
+
+  /**
+   * If none of the above, assume the architecture is 32-bit.
+   */
+  return 'x86'
+}