93 lines
		
	
	
		
			3.2 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			93 lines
		
	
	
		
			3.2 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
/* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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   !!!                                                                                   !!!
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   !!!  This file is special in that it must be able to execute with wrong Node version  !!!
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   !!!  or even when node_modules are missing.                                           !!!
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   !!!                                                                                   !!!
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   !!!  Do not depend on Node4+ features or presence of npm packages here.               !!!
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   !!!                                                                                   !!!
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   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! */
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'use strict';
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var exec = require('child_process').exec;
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var checkNodeModules;
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var semver;
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var issues = [];
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// coarse Node version check
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if (Number.parseInt(process.version[1], 10) < 5) {
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  issues.push("Angular 2 build currently requires Node 5. Use nvm to update your node version.");
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}
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try {
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  semver = require('semver');
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} catch(e) {
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  issues.push("Looks like you are missing some npm dependencies. Run: npm install");
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}
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if (issues.length) {
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  printWarning(issues);
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  console.error("Your environment doesn't provide the prerequisite dependencies.\n" +
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                "Please fix the issues listed above and then rerun the gulp command.\n" +
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                "Check out https://github.com/angular/angular/blob/master/DEVELOPER.md for more info.");
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  process.exit(1);
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}
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// wrap in try/catch in case someone requires from within that file
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try {
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  checkNodeModules = require('./npm/check-node-modules.js');
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} catch(e) {
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  issues.push("Looks like you are missing some npm dependencies. Run: npm install");
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  throw e;
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} finally {
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  // print warnings and move on, the next steps will likely fail, but hey, we warned them.
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  printWarning(issues);
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}
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function checkEnvironment(reqs) {
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  exec('npm --version', function(e, stdout) {
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    var foundNpmVersion = semver.clean(stdout);
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    var foundNodeVersion = process.version;
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    var issues = [];
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    if (!semver.satisfies(foundNodeVersion, reqs.requiredNodeVersion)) {
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      issues.push('You are running unsupported node version. Found: ' + foundNodeVersion +
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        ' Expected: ' + reqs.requiredNodeVersion + '. Use nvm to update your node version.');
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    }
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    if (!semver.satisfies(foundNpmVersion, reqs.requiredNpmVersion)) {
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      issues.push('You are running unsupported npm version. Found: ' + foundNpmVersion +
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        ' Expected: ' + reqs.requiredNpmVersion + '. Run: npm update -g npm');
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    }
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    if (!checkNodeModules()) {
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      issues.push('Your node_modules directory is stale or out of sync with npm-shrinkwrap.json. Run: npm install');
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    }
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    printWarning(issues);
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  });
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}
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function printWarning(issues) {
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  if (!issues.length) return;
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  console.warn('');
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  console.warn(Array(110).join('!'));
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  console.warn('!!!  Your environment is not in a good shape. Following issues were found:');
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  issues.forEach(function(issue) {console.warn('!!!   - ' + issue);});
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  console.warn(Array(110).join('!'));
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  console.warn('');
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  if (process.env.CI) {
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    process.exit(1);
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  }
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}
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module.exports = checkEnvironment;
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