Use binary destination set in package.json

Fixes #31.

index.js

@@ -3,6 +3,7 @@
 var binCheck = require('bin-check');
 var binVersionCheck = require('bin-version-check');
 var Download = require('download');
+var find = require('findup-sync');
 var globby = require('globby');
 var isPathGlobal = require('is-path-global');
 var osFilterObj = require('os-filter-obj');
@@ -63,8 +64,11 @@ BinWrapper.prototype.src = function (src, os, arch) {
 
 BinWrapper.prototype.dest = function (dest) {
  if (!arguments.length && !this._dest) {
- this._dest = tempfile();
- return this._dest;
+ if (this.pkg()) {
+ this._dest = this.pkg();
+ } else {
+ this._dest = tempfile();
+ }
  }
 
  if (!arguments.length) {
@@ -291,6 +295,25 @@ BinWrapper.prototype.get = function (cb) {
  download.run(cb);
 };
 
+/**
+ * Get destination from package.json
+ *
+ * @api private
+ */
+
+BinWrapper.prototype.pkg = function () {
+ delete require.cache[__filename];
+
+ var dir = path.dirname(module.parent.filename);
+ var pkg = require(find('package.json', { cwd: dir }));
+
+ if (pkg.bin[path.basename(this.use())]) {
+ return path.resolve(path.dirname(pkg.bin[path.basename(this.use())]));
+ }
+
+ return path.resolve(path.dirname(pkg.bin));
+};
+
 /**
  * Module exports
  */

package.json

@@ -29,6 +29,7 @@
  "bin-version-check": "^2.1.0",
  "download": "^3.3.0",
  "download-status": "^2.0.0",
+ "findup-sync": "^0.2.1",
  "globby": "^1.0.0",
  "is-path-global": "^1.0.0",
  "lnfs": "^1.0.0",