show reason for incompatible update

package.json

@@ -36,7 +36,7 @@
     "inquirer": "7.3.3",
     "libnpmconfig": "1.2.1",
     "lodash": "4.17.21",
-    "npm-check-updates": "11.4.0",
+    "npm-check-updates": "11.5.3",
     "open": "7.4.2",
     "pacote": "11.2.7",
     "semver": "7.3.4",

src/commands/check.js

@@ -75,18 +75,25 @@ export const handler = catchAsyncError(async opts => {
     .filter(({name}) => opts[name])
     .map(({ncuValue}) => ncuValue)
     .join(',');
+
   const currentVersions = ncu.getCurrentDependencies(packageJson, {dep: ncuDepGroups});
   const peerDependencies = ncu.getPeerDependencies(currentVersions, {});
-  const compatibleVersions = await ncu.queryVersions(currentVersions, {versionTarget: 'latest', peerDependencies});
-  const latestVersions = await ncu.queryVersions(currentVersions, {versionTarget: 'latest', loglevel: 'silent'});
-
+  const [upgradedCompatibleVersionsFull, compatibleVersions, upgradedPeerDependencies] =
+    await ncu.upgradePackageDefinitions(
+      currentVersions,
+      {versionTarget: 'latest', peer: true, peerDependencies}
+    );
+  const [upgradedLatestVersionsFull, latestVersions] = await ncu.upgradePackageDefinitions(
+    currentVersions,
+    {versionTarget: 'latest', loglevel: 'silent'}
+  );
   // Filtering modules that have to be updated
   const upgradedLatestVersions = _.pickBy(
-    ncu.upgradeDependencies(currentVersions, latestVersions),
+    upgradedLatestVersionsFull,
     (newVersion, moduleName) => filterModuleName(moduleName)
   );
   const upgradedCompatibleVersions = _.pickBy(
-    ncu.upgradeDependencies(currentVersions, compatibleVersions),
+    upgradedCompatibleVersionsFull,
     (newVersion, moduleName) => filterModuleName(moduleName)
   );
 
@@ -135,10 +142,15 @@ export const handler = catchAsyncError(async opts => {
   if (!_.isEmpty(incompatibleVersions)) {
     const rows = _.map(Object.entries(incompatibleVersions), ([name, to]) => [
       strong(name),
-      currentVersions[name], '→', colorizeDiff(currentVersions[name], to)
+      currentVersions[name], '→', colorizeDiff(currentVersions[name], to),
+      'cause: ' + Object.entries(upgradedPeerDependencies)
+        .filter(([, peers]) => peers[name] !== undefined && !semver.satisfies(latestVersions[name], peers[name]))
+        .map(([pkg, peers]) => pkg + ' requires ' + peers[name])
+        .join(', ')
     ]);
 
-    console.log(`\n${strong('Ignored incompatible updates (peer dependencies):')}\n\n${createSimpleTable(rows)}`);
+    console.log(`\n${strong('Ignored incompatible updates (peer dependencies):')}\n`);
+    console.log(`\n${createSimpleTable(rows, {colAligns: 'lrrrl'})}`);
   }
 
   if (!_.isEmpty(ignoredModules)) {