@@ -14,7 +14,9 @@ import { ProcessOutput, createConsoleLogger } from '@angular-devkit/core/node';
 import { UnsuccessfulWorkflowExecution } from '@angular-devkit/schematics';
 import { NodeWorkflow } from '@angular-devkit/schematics/tools';
 import * as ansiColors from 'ansi-colors';
+import { existsSync } from 'fs';
 import * as inquirer from 'inquirer';
+import * as path from 'path';
 import yargsParser, { camelCase, decamelize } from 'yargs-parser';
 
 /**
@@ -108,6 +110,45 @@ function _createPromptProvider(): schema.PromptProvider {
 };
 }
 
+function findUp(names: string | string[], from: string) {
+if (!Array.isArray(names)) {
+names = [names];
+}
+const root = path.parse(from).root;
+
+let currentDir = from;
+while (currentDir && currentDir !== root) {
+for (const name of names) {
+const p = path.join(currentDir, name);
+if (existsSync(p)) {
+return p;
+}
+}
+
+currentDir = path.dirname(currentDir);
+}
+
+return null;
+}
+
+/**
+* return package manager' name by lock file
+*/
+function getPackageManagerName() {
+// order by check priority
+const LOCKS: Record<string, string> = {
+'package-lock.json': 'npm',
+'yarn.lock': 'yarn',
+'pnpm-lock.yaml': 'pnpm',
+};
+const lockPath = findUp(Object.keys(LOCKS), process.cwd());
+if (lockPath) {
+return LOCKS[path.basename(lockPath)];
+}
+
+return 'npm';
+}
+
 // eslint-disable-next-line max-lines-per-function
 export async function main({
 args,
@@ -155,6 +196,7 @@ export async function main({
 dryRun,
 resolvePaths: [process.cwd(), __dirname],
 schemaValidation: true,
+packageManager: getPackageManagerName(),
 });
 
 /** If the user wants to list schematics, we simply show all the schematic names. */