[FEATURE] Recent update warning

src/cliStyles.js

@@ -1,5 +1,9 @@
-import {white, green, yellow} from 'chalk';
+import {white, green, yellow, black} from 'chalk';
 
 export const strong = white.bold;
 export const success = green.bold;
 export const attention = yellow.bold;
+
+export const upgradeCaution = black.bgRed;
+export const upgradeWarning = black.bgYellow;
+export const upgradeInfo = black.bgWhite;

src/commands/check.js

@@ -12,10 +12,10 @@ import {colorizeDiff} from 'npm-check-updates/lib/version-util';
 import catchAsyncError from '../catchAsyncError';
 import {makeFilterFunction} from '../filterUtils';
 import {DEPS_GROUPS, loadGlobalPackages, loadPackageJson, setModuleVersion,
-  getModuleInfo, getModuleHomepage} from '../packageUtils';
+  getModuleInfo, getModuleHomepage, getVersionPublicationDate} from '../packageUtils';
 import {fetchRemoteDb, findModuleChangelogUrl} from '../changelogUtils';
 import {createSimpleTable} from '../cliTable';
-import {strong, success, attention} from '../cliStyles';
+import {strong, success, attention, upgradeCaution, upgradeWarning, upgradeInfo} from '../cliStyles';
 import askUser from '../askUser';
 import {toSentence} from '../stringUtils';
 import {askIgnoreFields} from './ignore';
@@ -157,6 +157,19 @@ export const handler = catchAsyncError(async opts => {
     // Adds new line
     console.log('');
 
+    // This checks if the package was released less than 3 days ago, throws a warning if true
+    let publishedDate = await getVersionPublicationDate(name, to);
+    publishedDate = new Date(publishedDate);
+    const recommendedDatePrior = new Date(Date.now() - (1000 * 60 * 60 * 24 * 3)); // This is 3 days prior to execution time.
+    const isRecent = publishedDate.getTime() > recommendedDatePrior.getTime();
+    if (isRecent) {
+      const timeSincePublication = new Date(Date.now()).getTime() - publishedDate.getTime();
+      const warningLevel = (isRecent && timeSincePublication < (1000 * 60 * 60 * 24 * 1)) ? 'caution' : (timeSincePublication < (1000 * 60 * 60 * 24 * 2)) ? 'warning' : 'info';
+      let message = (warningLevel === 'caution') ? upgradeCaution("CAUTION") : (warningLevel === 'warning') ? upgradeWarning("WARN") : upgradeInfo("INFO");
+      message += ` ${name}@${to.replace("^", "")} was released less than ${Math.ceil(timeSincePublication / (1000*60*60*24))} days ago, be careful when upgrading.`;
+      console.log(message);
+    }
+
     const answer = await askUser({
       type: 'list',
       message: `${changelogUrl === undefined ? 'U' : 'So, u'}pdate "${name}" ${opts.global ? 'globally' :

src/packageUtils.js

@@ -5,6 +5,7 @@ import pacote from 'pacote';
 import shell from 'shelljs';
 
 import _ from 'lodash';
+import got from 'got';
 
 export const DEPS_GROUPS = [
   {name: 'global', field: 'dependencies', flag: 'g', ncuValue: 'prod'},
@@ -108,3 +109,9 @@ export const getModuleInfo = _.memoize(async moduleName =>
     fullMetadata: true
   })
 );
+
+// This function returns the publication date of a specific module version. 
+export const getVersionPublicationDate = _.memoize(async (moduleName, version) => {
+  const moduleData = await got(`https://registry.npmjs.org/${moduleName}/`).json();
+  return moduleData.time[version.replace("^", "")];
+});