feat: reads versions from lock files

Reading from the appropriate lock files instead of the
package.json means having a better idea of what packages
are installed. With the package.json, there's a chance to
miss the actual installed version due to using a range
like ^7.0.0 whereas with the lock file, the version is
printed to what the package manager resolved.

To make this more easily achievable, I refactored the
info.action.ts file to be more class based so I could
reuse the package manager instead of having to re-find it
each time.

re: #896

actions/info.action.ts

@@ -10,8 +10,14 @@ import {
 import { BANNER, MESSAGES } from '../lib/ui';
 import { AbstractAction } from './abstract.action';
 
+interface LockfileDependency {
+  version: string;
+  resolved: string;
+  integrity: string;
+}
+
 interface PackageJsonDependencies {
-  [key: string]: string;
+  [key: string]: LockfileDependency;
 }
 
 interface NestDependency {
@@ -20,42 +26,24 @@ interface NestDependency {
 }
 
 export class InfoAction extends AbstractAction {
+  private manager!: AbstractPackageManager;
+
   public async handle() {
-    displayBanner();
-    await displaySystemInformation();
-    await displayNestInformation();
+    this.manager = await PackageManagerFactory.find();
+    this.displayBanner();
+    await this.displaySystemInformation();
+    await this.displayNestInformation();
   }
-}
-
-const displayBanner = () => {
-  console.info(chalk.red(BANNER));
-};
-
-const displaySystemInformation = async () => {
-  console.info(chalk.green('[System Information]'));
-  console.info('OS Version     :', chalk.blue(osName(platform(), release())));
-  console.info('NodeJS Version :', chalk.blue(process.version));
-  await displayPackageManagerVersion();
-};
 
-const displayPackageManagerVersion = async () => {
-  const manager: AbstractPackageManager = await PackageManagerFactory.find();
-  try {
-    const version: string = await manager.version();
-    console.info(`${manager.name} Version    :`, chalk.blue(version), '\n');
-  } catch {
-    console.error(`${manager.name} Version    :`, chalk.red('Unknown'), '\n');
+  private displayBanner() {
+    console.info(chalk.red(BANNER));
   }
-};
 
-const displayNestInformation = async () => {
-  displayCliVersion();
-  console.info(chalk.green('[Nest Platform Information]'));
-  try {
-    const dependencies: PackageJsonDependencies = await readProjectPackageJsonDependencies();
-    displayNestVersions(dependencies);
-  } catch {
-    console.error(chalk.red(MESSAGES.NEST_INFORMATION_PACKAGE_MANAGER_FAILED));
+  private async displaySystemInformation(): Promise<void> {
+    console.info(chalk.green('[System Information]'));
+    console.info('OS Version     :', chalk.blue(osName(platform(), release())));
+    console.info('NodeJS Version :', chalk.blue(process.version));
+    await this.displayPackageManagerVersion();
   }
 };
 
@@ -123,15 +111,6 @@ const format = (dependencies: NestDependency[]): NestDependency[] => {
     if (dependency.name.length < length) {
       dependency.name = rightPad(dependency.name, length);
     }
-    dependency.name = dependency.name.concat(' :');
-    dependency.value = dependency.value.replace(/(\^|\~)/, '');
-  });
-  return sorted;
-};
-
-const rightPad = (name: string, length: number): string => {
-  while (name.length < length) {
-    name = name.concat(' ');
+    return name;
   }
-  return name;
-};
+}

lib/package-managers/abstract.package-manager.ts

@@ -5,6 +5,7 @@ import * as ora from 'ora';
 import { join } from 'path';
 import { AbstractRunner } from '../runners/abstract.runner';
 import { MESSAGES } from '../ui';
+import { LockParser } from './lock-parser';
 import { PackageManagerCommands } from './package-manager-commands';
 import { ProjectDependency } from './project.dependency';
 
@@ -177,4 +178,6 @@ export abstract class AbstractPackageManager {
   public abstract get name(): string;
 
   public abstract get cli(): PackageManagerCommands;
+
+  public abstract get lockParser(): LockParser;
 }

lib/package-managers/lock-parser.ts

@@ -0,0 +1,4 @@
+export interface LockParser {
+  stringify: (record: Record<string, any>) => string;
+  parse: (file: string) => Record<string, any>
+}

lib/package-managers/npm.package-manager.ts

@@ -1,6 +1,7 @@
 import { Runner, RunnerFactory } from '../runners';
 import { NpmRunner } from '../runners/npm.runner';
 import { AbstractPackageManager } from './abstract.package-manager';
+import { LockParser } from './lock-parser';
 import { PackageManager } from './package-manager';
 import { PackageManagerCommands } from './package-manager-commands';
 
@@ -23,4 +24,8 @@ export class NpmPackageManager extends AbstractPackageManager {
       saveDevFlag: '--save-dev',
     };
   }
+
+  get lockParser(): LockParser {
+    return JSON;
+  } 
 }

lib/package-managers/yarn.package-manager.ts

@@ -1,6 +1,8 @@
+import * as yarnLockParser from '@yarnpkg/lockfile';
 import { Runner, RunnerFactory } from '../runners';
 import { YarnRunner } from '../runners/yarn.runner';
 import { AbstractPackageManager } from './abstract.package-manager';
+import { LockParser } from './lock-parser';
 import { PackageManager } from './package-manager';
 import { PackageManagerCommands } from './package-manager-commands';
 
@@ -23,4 +25,8 @@ export class YarnPackageManager extends AbstractPackageManager {
       saveDevFlag: '-D',
     };
   }
+
+  get lockParser(): LockParser {
+    return yarnLockParser;
+  }
 }

package.json

@@ -47,7 +47,12 @@
     "@angular-devkit/schematics": "11.0.1",
     "@angular-devkit/schematics-cli": "0.1100.1",
     "@nestjs/schematics": "^7.1.0",
+<<<<<<< HEAD
     "@types/webpack": "4.41.25",
+=======
+    "@types/webpack": "4.41.21",
+    "@yarnpkg/lockfile": "^1.1.0",
+>>>>>>> feat: reads versions from lock files
     "chalk": "3.0.0",
     "chokidar": "3.4.3",
     "cli-table3": "0.5.1",
@@ -79,6 +84,7 @@
     "@types/rimraf": "3.0.0",
     "@types/shelljs": "0.8.8",
     "@types/webpack-node-externals": "2.5.0",
+    "@types/yarnpkg__lockfile": "^1.1.4",
     "@typescript-eslint/eslint-plugin": "^2.19.0",
     "@typescript-eslint/parser": "^2.19.0",
     "delete-empty": "3.0.0",