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dependency-checker.js
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dependency-checker.js
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'use strict';
var path = require('path');
var fs = require('fs');
var readFile = fs.readFileSync;
var readDir = fs.readdirSync;
var fileExists = fs.existsSync;
var Package = require('./package');
var alreadyChecked = false;
function isUnsatisfied(pkg) {
return !!pkg.needsUpdate;
}
function EmberCLIDependencyChecker(project) {
this.name = 'ember-cli-dependency-checker';
this.project = project;
this.checkDependencies();
}
EmberCLIDependencyChecker.prototype.checkDependencies = function() {
if(alreadyChecked || process.env.SKIP_DEPENDENCY_CHECKER) {
return;
}
var bowerDeps = this.readBowerDependencies();
var unsatisfiedBowerDeps = bowerDeps.filter(isUnsatisfied);
var npmDeps = this.readNPMDependencies();
var unsatisfiedNPMDeps = npmDeps.filter(isUnsatisfied);
var message = '';
message += this.reportUnsatisfiedPackages('npm', unsatisfiedNPMDeps);
message += this.reportUnsatisfiedPackages('bower', unsatisfiedBowerDeps);
EmberCLIDependencyChecker.setAlreadyChecked(true);
if (message !== '') {
var DependencyError = require('./dependency-error');
throw new DependencyError(message);
}
};
EmberCLIDependencyChecker.prototype.lookupNodeModuleVersion = function(name) {
var nodePackage = path.join(this.project.root, 'node_modules', name, 'package.json');
return this.lookupPackageVersion(nodePackage);
};
EmberCLIDependencyChecker.prototype.lookupBowerPackageVersion = function(name) {
var packageDirectory = path.join(this.project.root, this.project.bowerDirectory, name);
var version = null;
if (fileExists(packageDirectory) && readDir(packageDirectory).length > 0) {
var dotBowerFile = path.join(packageDirectory, '.bower.json');
version = this.lookupPackageVersion(dotBowerFile);
if (!version) {
var bowerFile = path.join(packageDirectory, 'bower.json');
version = this.lookupPackageVersion(bowerFile) || '*';
}
}
return version;
};
EmberCLIDependencyChecker.prototype.lookupPackageVersion = function(path) {
if (fileExists(path)) {
var pkg = readFile(path);
var version = null;
try {
version = JSON.parse(pkg).version || null;
} catch(e) {
// JSON parse error
}
return version;
} else {
return null;
}
};
EmberCLIDependencyChecker.prototype.readBowerDependencies = function() {
var dependencies = this.project.bowerDependencies();
return Object.keys(dependencies).map(function(name) {
var versionSpecified = dependencies[name];
var versionInstalled = this.lookupBowerPackageVersion(name);
return new Package(name, versionSpecified, versionInstalled);
}, this);
};
EmberCLIDependencyChecker.prototype.readNPMDependencies = function() {
var dependencies = this.project.dependencies();
return Object.keys(dependencies).map(function(name) {
var versionSpecified = dependencies[name];
var versionInstalled = this.lookupNodeModuleVersion(name);
return new Package(name, versionSpecified, versionInstalled);
}, this);
};
EmberCLIDependencyChecker.prototype.reportUnsatisfiedPackages = function(type, packages) {
this.chalk = this.chalk || require('chalk');
this.EOL = this.EOL || require('os').EOL;
var chalk = this.chalk;
var EOL = this.EOL;
var message = '';
if (packages.length > 0) {
message += EOL + chalk.red('Missing ' + type + ' packages: ') + EOL;
packages.map(function(pkg) {
message += chalk.reset('Package: ') + chalk.cyan(pkg.name) + EOL;
message += chalk.grey(' * Specified: ') + chalk.reset(pkg.versionSpecified) + EOL;
message += chalk.grey(' * Installed: ') + chalk.reset(pkg.versionInstalled || '(not installed)') + EOL + EOL;
});
message += chalk.red('Run `'+ type +' install` to install missing dependencies.') + EOL;
}
return message;
};
EmberCLIDependencyChecker.setAlreadyChecked = function(value) {
alreadyChecked = value;
};
module.exports = EmberCLIDependencyChecker;