@nx/workspace/src/generators/move/lib/check-destination.js

The Workspace plugin contains executors and generators that are useful for any Nx workspace. It should be present in every Nx workspace and other plugins build on it.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.checkDestination = checkDestination;
/**
 * Checks whether the destination folder is valid
 *
 * - must not be outside the workspace
 * - must be a new folder
 *
 * @param schema The options provided to the schematic
 */
function checkDestination(tree, schema, providedDestination) {
    const INVALID_DESTINATION = `Invalid destination: [${providedDestination}]`;
    if (providedDestination.includes('..')) {
        throw new Error(`${INVALID_DESTINATION} - Please specify explicit path.`);
    }
    if (tree.children(schema.relativeToRootDestination).length > 0) {
        throw new Error(`${INVALID_DESTINATION} - Path is not empty.`);
    }
}