89 lines
3.1 KiB
JavaScript
89 lines
3.1 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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}
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module.exports = checkEnvironment;
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