tval

#!/usr/bin/env node

// Copyright 2016 Traceur Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

'use strict';

function usage() {
  console.log(process.mainModule.filename + ' <filename> [args]');
  console.log('Compile <filename> as an ES6 module and execute it with "args"');
}

// The System object require()s traceur. The module sets global.System
// as a side-effect.
require('./src/node/System.js');
var path = require('path');

var helps = ['-?', '--help', '-h'];

// The first argument is node, second is this file;
// the third one is our 'program' name.
var filename = process.argv[2];

if (!filename || helps.indexOf(filename) !== -1) {
  usage();
  process.exit(0);
}

var moduleName = path.resolve(filename).replace(/\\/g, '/');

// Simulate a future where it looks like node is executing our program
process.argv = [process.mainModule.filename].concat(process.argv.slice(2));

var metadata = {
  traceurOptions: {require: true, sourceMaps: 'memory'}
};

// The module will evaluate and have process.argv ['node', filename, ...]
System.import(moduleName, {metadata: metadata}).catch(function(err) {
  console.error('tval fails:',  err.stack || err + '');
  process.exit(1);
});