@nestjs/cli/lib/utils/is-collection-installed.js

Nest - modern, fast, powerful node.js web framework (@cli)

import { NodeWorkflow } from '@angular-devkit/schematics/tools/index.js';
/**
 * Whether the schematics `collection` resolves from the current project.
 */
export function isCollectionInstalled(collection) {
    // Without `resolvePaths`, the workflow resolves collections relative to the
    // CLI's own install rather than the project.
    const workflow = new NodeWorkflow(process.cwd(), {
        resolvePaths: [process.cwd()],
    });
    try {
        workflow.engine.createCollection(collection);
        return true;
    }
    catch {
        return false;
    }
}