@trumbitta/nx-plugin-unused-deps/src/generators/check/generator.js

[](https://www.npmjs.com/@trumbitta/nx-plugin-unused-deps) []()

"use strict";
// Based on code by Philip Fulcher @PhilipJFulcher
Object.defineProperty(exports, "__esModule", { value: true });
const tslib_1 = require("tslib");
const devkit_1 = require("@nrwl/devkit");
const project_graph_1 = require("@nrwl/workspace/src/core/project-graph");
function default_1(tree, options) {
    return tslib_1.__awaiter(this, void 0, void 0, function* () {
        const nxGraphDependencies = yield checkDeps();
        const packageJson = devkit_1.readJson(tree, 'package.json');
        const jsonFile = `.nx-plugin-unused-deps.json`;
        const packageIsNotDependedOn = (depName) => {
            if (depName.startsWith('@types/')) {
                // for @types/ packages, we actually want to check if the underlying package is depended on
                // ie: "@types/express" is depended on if "express" is depended on
                depName = depName.replace('@types/', '');
            }
            const isDependedOn = nxGraphDependencies[`npm:${depName}`] != null;
            return !isDependedOn;
        };
        const dependencies = {
            dependencies: Object.keys(packageJson.dependencies).filter(packageIsNotDependedOn),
            devDependencies: Object.keys(packageJson.devDependencies).filter(packageIsNotDependedOn),
        };
        logDependencies(dependencies, options.json, jsonFile);
        if (options.fix) {
            updatePackageJson(tree, dependencies);
        }
    });
}
exports.default = default_1;
function updatePackageJson(tree, packageJsonDeps) {
    const { dependencies, devDependencies } = packageJsonDeps;
    devkit_1.removeDependenciesFromPackageJson(tree, dependencies, devDependencies);
    devkit_1.logger.info(`nx-plugin-unused-deps - updated package.json`);
}
function logDependencies(dependencies, toJson, jsonFile) {
    devkit_1.logger.log(dependencies);
    if (toJson) {
        devkit_1.writeJsonFile(jsonFile, dependencies);
        devkit_1.logger.info(`nx-plugin-unused-deps - unused dependencies written to:\n${jsonFile}`);
    }
}
function checkDeps(packageRecord = {}) {
    return tslib_1.__awaiter(this, void 0, void 0, function* () {
        const graph = yield project_graph_1.createProjectGraphAsync();
        Object.keys(graph.dependencies).forEach((projectName) => {
            const deps = graph.dependencies[projectName];
            const libNames = deps.filter((dep) => dep.target.startsWith('npm')).map((dep) => dep.target);
            libNames.forEach((libName) => {
                if (packageRecord[libName] === undefined) {
                    packageRecord[libName] = 1;
                }
                else {
                    packageRecord[libName]++;
                }
            });
        });
        return packageRecord;
    });
}
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