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scripts/hak/hakEnv.js

@@ -44,6 +44,10 @@ function getTarget(packageJson) {
 
 function detectArch() {
     if (process.platform === 'win32') {
+        // vcvarsall.bat (the script that sets up the environment for
+        // visual studio build tools) sets an env var to tell us what
+        // architecture the active build tools target, so we auto-detect
+        // this.
         const targetArch = process.env.VSCMD_ARG_TGT_ARCH;
         if (targetArch === 'x86') {
             return 'ia32';