chore(PackageManager): allow legacy peer deps for DV components

Author: jackofdiamond5

packages/core/packages/PackageManager.ts

@@ -95,7 +95,8 @@ export class PackageManager {
 				case "npm":
 				/* passes through */
 				default:
-					command = `${managerCommand} install --quiet`;
+					// TODO: remove --legacy-peer-deps flag igniteui-cli#1338 once new DV package is available
+					command = `${managerCommand} install --quiet --legacy-peer-deps`;
 					break;
 			}
 			await this.flushQueue(false);
@@ -165,7 +166,8 @@ export class PackageManager {
 	}
 
 	public static async queuePackage(packageName: string, verbose = false) {
-		const command = this.getInstallCommand(this.getManager(), packageName).replace("--save", "--no-save");
+		// TODO: remove --legacy-peer-deps flag igniteui-cli#1338 once new DV package is available
+		const command = this.getInstallCommand(this.getManager(), packageName).replace("--save", "--no-save").concat(" --legacy-peer-deps");
 		const [packName, version] = packageName.split(/@(?=[^\/]+$)/);
 		const packageJSON = this.getPackageJSON();
 		if (!packageJSON.dependencies) {

spec/unit/packageManager-spec.ts

@@ -296,7 +296,8 @@ describe("Unit - Package Manager", () => {
 		expect(Util.log).toHaveBeenCalledWith(`Installing npm packages`);
 		expect(Util.log).toHaveBeenCalledWith(`Error installing npm packages.`);
 		expect(Util.log).toHaveBeenCalledWith(`Example`);
-		expect(Util.execSync).toHaveBeenCalledWith(`npm install --quiet`,
+		// TODO: remove --legacy-peer-deps flag igniteui-cli#1338 once new DV package is available
+		expect(Util.execSync).toHaveBeenCalledWith(`npm install --quiet --legacy-peer-deps`,
 			{ stdio: ["inherit"], killSignal: "SIGINT" });
 		mockProjectConfig.packagesInstalled = true;
 		expect(ProjectConfig.setConfig).toHaveBeenCalledWith(mockProjectConfig);
@@ -312,7 +313,8 @@ describe("Unit - Package Manager", () => {
 		expect(Util.log).toHaveBeenCalledTimes(2);
 		expect(Util.log).toHaveBeenCalledWith(`Installing npm packages`);
 		expect(Util.log).toHaveBeenCalledWith(`Packages installed successfully`);
-		expect(Util.execSync).toHaveBeenCalledWith(`npm install --quiet`,
+		// TODO: remove --legacy-peer-deps flag igniteui-cli#1338 once new DV package is available
+		expect(Util.execSync).toHaveBeenCalledWith(`npm install --quiet --legacy-peer-deps`,
 			{ stdio: ["inherit"], killSignal: "SIGINT" });
 		mockProjectConfig.packagesInstalled = true;
 		expect(ProjectConfig.setConfig).toHaveBeenCalledWith(mockProjectConfig);
@@ -331,7 +333,8 @@ describe("Unit - Package Manager", () => {
 		await PackageManager.installPackages(true);
 		expect(Util.log).toHaveBeenCalledTimes(1);
 		expect(Util.log).toHaveBeenCalledWith(`Installing npm packages`);
-		expect(Util.execSync).toHaveBeenCalledWith(`npm install --quiet`,
+		// TODO: remove --legacy-peer-deps flag igniteui-cli#1338 once new DV package is available
+		expect(Util.execSync).toHaveBeenCalledWith(`npm install --quiet --legacy-peer-deps`,
 			{ stdio: ["inherit"], killSignal: "SIGINT" });
 		expect(process.exit).toHaveBeenCalled();
 		expect(ProjectConfig.setConfig).toHaveBeenCalledTimes(0);
@@ -417,7 +420,7 @@ describe("Unit - Package Manager", () => {
 		expect(Util.log).toHaveBeenCalledTimes(0);
 		expect(child_process.exec).toHaveBeenCalledTimes(1);
 		expect(child_process.exec).toHaveBeenCalledWith(
-			`npm install test-pack --quiet --no-save`, {}, jasmine.any(Function));
+			`npm install test-pack --quiet --no-save --legacy-peer-deps`, {}, jasmine.any(Function));
 	});
 
 	it("queuePackage should ignore existing package installs", async () => {