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node_modules/node-pre-gyp/lib/build.js

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+"use strict";
+
+module.exports = exports = build;
+
+exports.usage = 'Attempts to compile the module by dispatching to node-gyp or nw-gyp';
+
+var napi = require('./util/napi.js');
+var compile = require('./util/compile.js');
+var handle_gyp_opts = require('./util/handle_gyp_opts.js');
+var configure = require('./configure.js');
+
+function do_build(gyp,argv,callback) {
+    handle_gyp_opts(gyp,argv,function(err,result) {
+        var final_args = ['build'].concat(result.gyp).concat(result.pre);
+        if (result.unparsed.length > 0) {
+            final_args = final_args.
+                          concat(['--']).
+                          concat(result.unparsed);
+        }
+        if (!err && result.opts.napi_build_version) {
+            napi.swap_build_dir_in(result.opts.napi_build_version);
+        }
+        compile.run_gyp(final_args,result.opts,function(err) {
+            if (result.opts.napi_build_version) {
+                napi.swap_build_dir_out(result.opts.napi_build_version);
+            }
+            return callback(err);
+        });
+    });
+}
+
+function build(gyp, argv, callback) {
+
+    // Form up commands to pass to node-gyp:
+    // We map `node-pre-gyp build` to `node-gyp configure build` so that we do not
+    // trigger a clean and therefore do not pay the penalty of a full recompile
+    if (argv.length && (argv.indexOf('rebuild') > -1)) {
+        argv.shift(); // remove `rebuild`
+        // here we map `node-pre-gyp rebuild` to `node-gyp rebuild` which internally means
+        // "clean + configure + build" and triggers a full recompile
+        compile.run_gyp(['clean'],{},function(err) {
+            if (err) return callback(err);
+            configure(gyp,argv,function(err) {
+                if (err) return callback(err);
+                return do_build(gyp,argv,callback);
+            });
+        });
+    } else {
+        return do_build(gyp,argv,callback);        
+    }
+}