Add detect option for custom dependency detection

Author: igorklopov

index.js

@@ -58,6 +58,7 @@ function Deps (opts) {
     this.transforms = [].concat(opts.transform).filter(Boolean);
     this.globalTransforms = [].concat(opts.globalTransform).filter(Boolean);
     this.resolver = opts.resolve || browserResolve;
+    this.detective = opts.detect || detective;
     this.options = xtend(opts);
     if (!this.options.modules) this.options.modules = {};
 
@@ -493,6 +494,7 @@ Deps.prototype.walk = function (id, parent, cb) {
 };
 
 Deps.prototype.parseDeps = function (file, src, cb) {
+    var self = this;
     if (this.options.noParse === true) return [];
     if (/\.json$/.test(file)) return [];
 
@@ -501,7 +503,7 @@ Deps.prototype.parseDeps = function (file, src, cb) {
         return [];
     }
 
-    try { var deps = detective(src) }
+    try { var deps = self.detective(src) }
     catch (ex) {
         var message = ex && ex.message ? ex.message : ex;
         throw new Error(

readme.markdown

@@ -72,6 +72,10 @@ package.json at all.
 `opts.resolve(id, parent, cb)` signature that
 [browser-resolve](https://github.com/shtylman/node-browser-resolve) has
 
+* `opts.detect` - a custom dependency detection function. `opts.detect(source)`
+should return an array of dependency module names. By default
+[detective](https://github.com/browserify/detective) is used.
+
 * `opts.filter` - a function (id) to skip resolution of some module `id` strings.
 If defined, `opts.filter(id)` should return truthy for all the ids to include
 and falsey for all the ids to skip.

test/detect.js

@@ -0,0 +1,32 @@
+var parser = require('../');
+var test = require('tap').test;
+var JSONStream = require('JSONStream');
+var packer = require('browser-pack');
+var path = require('path');
+
+test('detect', function (t) {
+    t.plan(1);
+    var p = parser({
+        detect: function (source) {
+            var rx = /require\(["'](.*?)["']\)/g;
+            var m, deps = [];
+            while (m = rx.exec(source)) {
+                deps.push(m[1]);
+            }
+            return deps;
+        }
+    });
+    p.end(path.join(__dirname, '/files/main.js'));
+    p.on('error', t.fail.bind(t));
+    var pack = packer();
+    
+    p.pipe(JSONStream.stringify()).pipe(pack);
+    
+    var src = '';
+    pack.on('data', function (buf) { src += buf });
+    pack.on('end', function () {
+        Function('console', src)({
+            log: function (s) { t.equal(s, 'main: 1055') }
+        });
+    });
+});