Refactored to avoid inferring rootDir

index.js

@@ -1,9 +1,9 @@
 'use strict';
 
-var fs      = require('fs');
-var log     = require('util').debuglog(require('./package').name);
-var through = require('through2');
-var path    = require('path');
+var realpath = require('fs.realpath');
+var log      = require('util').debuglog(require('./package').name);
+var through  = require('through2');
+var path     = require('path');
 
 function tsify(b, opts) {
 	var ts = opts.typescript || require('typescript');
@@ -62,7 +62,7 @@ function tsify(b, opts) {
 					}
 				})
 				.filter(function (file) { return file; })
-				.map(function (file) { return fs.realpathSync(file); });
+				.map(function (file) { return realpath.realpathSync(file); });
 			log('Files from browserify entry points:');
 			entries.forEach(function (file) { log('  %s', file); });
 			tsifier.reset();

lib/Host.js

@@ -1,20 +1,20 @@
 'use strict';
 
-var commondir = require('commondir');
 var events    = require('events');
 var fs        = require('fs');
-var realpath  = require('fs.realpath')
+var realpath  = require('fs.realpath');
 var log       = require('util').debuglog(require('../package').name);
 var trace     = require('util').debuglog(require('../package').name + '-trace');
 var os        = require('os');
 var path      = require('path');
 var util      = require('util');
 
 module.exports = function (ts) {
-	function Host(currentDirectory, outputDirectory, languageVersion) {
+	function Host(currentDirectory, opts) {
 		this.currentDirectory = this.getCanonicalFileName(path.resolve(currentDirectory));
-		this.outputDirectory = this.getCanonicalFileName(path.resolve(outputDirectory));
-		this.languageVersion = languageVersion;
+		this.outputDirectory = this.getCanonicalFileName(path.resolve(opts.outDir));
+		this.rootDirectory = this.getCanonicalFileName(path.resolve(opts.rootDir));
+		this.languageVersion = opts.target;
 		this.files = {};
 		this.previousFiles = {};
 		this.output = {};
@@ -146,18 +146,6 @@ module.exports = function (ts) {
 		return ts.sys.readFile(filename);
 	};
 
-	Host.prototype._rootDir = function () {
-		var dirs = [];
-		for (var filename in this.files) {
-			if (!Object.hasOwnProperty.call(this.files, filename)) continue;
-			if (/\.d\.ts$/.test(filename)) continue;
-
-			dirs.push(this.getCanonicalFileName(path.dirname(filename)));
-		}
-		var result = commondir(this.currentDirectory, dirs);
-		return this.getCanonicalFileName(result);
-	};
-
 	Host.prototype._rootFilenames = function () {
 
 		var rootFilenames = [];
@@ -193,7 +181,7 @@ module.exports = function (ts) {
 
 		var sourceCanonical = this._canonical(filename);
 		var outputRelative = path.relative(
-			this._rootDir(),
+			this.rootDirectory,
 			sourceCanonical
 		);
 		var outputCanonical = this.getCanonicalFileName(path.resolve(
@@ -211,7 +199,7 @@ module.exports = function (ts) {
 			outputCanonical
 		);
 		var sourceCanonical = this.getCanonicalFileName(path.resolve(
-			this._rootDir(),
+			this.rootDirectory,
 			outputRelative
 		));
 		return sourceCanonical;

lib/Tsifier.js

@@ -4,6 +4,7 @@ var convert  = require('convert-source-map');
 var events   = require('events');
 var extend   = require('util')._extend;
 var fs       = require('fs');
+var realpath = require('fs.realpath');
 var log      = require('util').debuglog(require('../package').name);
 var trace    = require('util').debuglog(require('../package').name + '-trace');
 var path     = require('path');
@@ -15,7 +16,7 @@ var util     = require('util');
 module.exports = function (ts) {
 	var CompileError     = require('./CompileError')(ts);
 	var Host             = require('./Host')(ts);
-	var currentDirectory = fs.realpathSync(process.cwd());
+	var currentDirectory = realpath.realpathSync(process.cwd());
 
 	var parseJsonConfigFileContent = ts.parseJsonConfigFileContent || ts.parseConfigFile;
 
@@ -104,8 +105,8 @@ module.exports = function (ts) {
 		// The output directory needs to be distinct from the input directory to prevent the TS
 		// compiler from thinking that it might accidentally overwrite source files, which would
 		// prevent it from outputting e.g. the results of transpiling ES6 JS files with --allowJs.
-		delete parsed.options.rootDir;
-		parsed.options.outDir = '__tsify__';
+		parsed.options.rootDir = path.relative('.', '/');
+		parsed.options.outDir = path.resolve('/__tsify__');
 
 		log('Files from tsconfig parse:');
 		parsed.fileNames.forEach(function (filename) { log('  %s', filename); });
@@ -125,11 +126,7 @@ module.exports = function (ts) {
 		self.opts = parsedOptions.options;
 		self.files = parsedOptions.fileNames;
 		self.bopts = bopts;
-		self.host = new Host(
-			currentDirectory,
-			this.opts.outDir,
-			this.opts.target
-		);
+		self.host = new Host(currentDirectory, self.opts);
 
 		self.host.on('file', function (file, id) {
 			self.emit('file', file, id);

package.json

@@ -27,7 +27,6 @@
     "node": ">=0.12"
   },
   "dependencies": {
-    "commondir": "^1.0.1",
     "convert-source-map": "^1.1.0",
     "through2": "^2.0.0",
     "tsconfig": "^2.2.0"

test/test.js

@@ -101,6 +101,27 @@ test('non-TS main file', function (t) {
 	});
 });
 
+test('non-TS main file and nested dependencies', function (t) {
+
+	// The workaround mentioned in issue #148 - an empty TS file in the root -
+	// is no longer required.
+
+	process.chdir('./test/withJsRootAndNestedDeps');
+	run({
+		bOpts: { entries: ['./x.js'] }
+	}, function (errors, actual) {
+		expectNoErrors(t, errors);
+		expectConsoleOutputFromScript(t, actual, [
+			'hello world',
+			'222'
+		]);
+		expectMappedToken(t, 'nested/y.ts', actual, 'console.log(message)');
+		expectMappedToken(t, 'nested/twice/z.ts', actual, '111');
+		process.chdir('../..');
+		t.end();
+	});
+});
+
 test('with adjacent compiled files', function (t) {
 	run({
 		bOpts: { entries: ['./test/withAdjacentCompiledFiles/x.ts'] }

test/withJsRootAndNestedDeps/nested/twice/z.ts

@@ -0,0 +1,4 @@
+export = fn;
+function fn(n: number) {
+	return n*111;
+}

test/withJsRootAndNestedDeps/nested/y.ts

@@ -0,0 +1,4 @@
+export = fn;
+function fn(message: string) {
+	console.log(message);
+}

test/withJsRootAndNestedDeps/tsconfig.json

@@ -0,0 +1 @@
+{}

test/withJsRootAndNestedDeps/x.js

@@ -0,0 +1,4 @@
+var y = require('./nested/y');
+var z = require('./nested/twice/z');
+y('hello world');
+y(z(2).toString());