64 lines
1.7 KiB
JavaScript
Executable File
64 lines
1.7 KiB
JavaScript
Executable File
"use strict";
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var fs = require('fs');
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var path = require('path');
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var NPM_SHRINKWRAP_FILE = 'npm-shrinkwrap.json';
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var NPM_SHRINKWRAP_CACHED_FILE = 'node_modules/.npm-shrinkwrap.cached.json';
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var FS_OPTS = {encoding: 'utf-8'};
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var PROJECT_ROOT = path.join(__dirname, '../../');
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function checkNodeModules(logOutput, purgeIfStale) {
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var nodeModulesOK = _checkCache(NPM_SHRINKWRAP_FILE, NPM_SHRINKWRAP_CACHED_FILE);
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if (nodeModulesOK) {
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if (logOutput) console.log(':-) npm dependencies are looking good!');
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} else {
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if (logOutput) console.error(':-( npm dependencies are stale or in an in unknown state!');
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if (purgeIfStale) {
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if (logOutput) console.log(' purging...');
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_deleteDir(path.join(PROJECT_ROOT, 'node_modules'));
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}
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}
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return nodeModulesOK;
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}
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function _checkCache(markerFile, cacheMarkerFile) {
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var absoluteMarkerFilePath = path.join(PROJECT_ROOT, markerFile);
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var absoluteCacheMarkerFilePath = path.join(PROJECT_ROOT, cacheMarkerFile);
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if (!fs.existsSync(absoluteCacheMarkerFilePath)) return false;
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var markerContent = fs.readFileSync(absoluteMarkerFilePath, FS_OPTS);
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var cacheMarkerContent = fs.readFileSync(absoluteCacheMarkerFilePath, FS_OPTS);
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return markerContent == cacheMarkerContent;
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}
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/**
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* Custom implementation of recursive `rm` because we can't rely on the state of node_modules to
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* pull in existing module.
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*/
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function _deleteDir(path) {
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if( fs.existsSync(path) ) {
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var subpaths = fs.readdirSync(path);
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subpaths.forEach(function(subpath) {
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var curPath = path + "/" + subpath;
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if(fs.lstatSync(curPath).isDirectory()) {
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_deleteDir(curPath);
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} else {
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fs.unlinkSync(curPath);
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}
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});
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fs.rmdirSync(path);
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}
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}
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module.exports = checkNodeModules;
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