Run coverage programmatically

.editorconfig

@@ -10,6 +10,3 @@ trim_trailing_whitespace = true
 insert_final_newline = true
 indent_style = space
 indent_size = 2
-
-[Makefile]
-indent_style = tab

Makefile

-BIN = ./node_modules/.bin
-REPORTER = spec
-
-clean:
-	@rm -rf lib-cov test/fixtures/*/build.css
-
-lint:
-	@$(BIN)/jshint bin lib test
-
-node_modules: package.json
-	@npm install
-	@touch node_modules
-
-test: clean lint node_modules
-	@$(BIN)/_mocha \
-	  --reporter $(REPORTER)
-
-test-cov: clean lint node_modules
-	@$(BIN)/jscoverage lib lib-cov
-	@NODESASS_COV=1 $(BIN)/_mocha \
-	  --reporter mocha-lcov-reporter | $(BIN)/coveralls
-
-.PHONY: test clean

package.json

@@ -19,7 +19,7 @@
   },
   "gypfile": true,
   "scripts": {
-    "coverage": "make test-cov",
+    "coverage": "node scripts/coverage.js",
     "install": "node lib/build.js",
     "prepublish": "node scripts/prepublish",
     "pretest": "node_modules/.bin/jshint bin lib test",
@@ -29,6 +29,7 @@
     "bin",
     "binding.gyp",
     "lib",
+    "scripts",
     "src",
     "test"
   ],

scripts/coverage.js

+var path = require('path'),
+    spawn = require('child_process').spawn,
+    bin = path.join.bind(null, __dirname, '..', 'node_modules', '.bin');
+
+/**
+ * Run test suite
+ *
+ * @api private
+ */
+
+function suite() {
+  process.env.NODESASS_COV = 1;
+
+  var coveralls = spawn(bin('coveralls'));
+  var mocha = spawn(bin('_mocha'), ['--reporter', 'mocha-lcov-reporter'], {
+    env: process.env
+  });
+
+  mocha.on('error', function(err) {
+    console.error(err);
+    process.exit(1);
+  });
+
+  mocha.stderr.setEncoding('utf8');
+  mocha.stderr.on('data', function(err) {
+    console.error(err);
+    process.exit(1);
+  });
+
+  mocha.stdout.pipe(coveralls.stdin);
+}
+
+/**
+ * Generate coverage files
+ *
+ * @api private
+ */
+
+function coverage() {
+  var jscoverage = spawn(bin('jscoverage'), ['lib', 'lib-cov']);
+
+  jscoverage.on('error', function(err) {
+    console.error(err);
+    process.exit(1);
+  });
+
+  jscoverage.stderr.setEncoding('utf8');
+  jscoverage.stderr.on('data', function(err) {
+    console.error(err);
+    process.exit(1);
+  });
+
+  jscoverage.on('close', suite);
+}
+
+/**
+ * Run
+ */
+
+coverage();