# All files nx-project.ts

100% Statements 20/20
85.71% Branches 12/14
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     /*! Copyright [Amazon.com](http://amazon.com/), Inc. or its affiliates. All Rights Reserved.
    SPDX-License-Identifier: Apache-2.0 */
    import * as path from "path";
    import { Component, JsonFile, Project } from "projen";
    import { NodeProject } from "projen/lib/javascript";
    import { buildDownloadExecutableCommand } from "./nx-monorepo";

    /**
     * Component which manged the project specific NX Config and is added to all NXMonorepo subprojects.
     *
     */
    export class NxProject extends Component {
      /**
       * Retrieves an instance of NXProject if one is associated to the given project.
       *
       * @param project project instance.
       */
      static of(project: Project): NxProject | undefined {
        return project.components.find((c) => c instanceof NxProject) as
          | NxProject
          | undefined;
      }

      /**
       * List of implicit dependencies.
       *
       * @internal
       * @private
       */
      private readonly _implicitDependencies: string[] = [];

      constructor(project: Project) {
        super(project);
      }

      /**
       * Adds an implicit dependency between the dependant (this project) and dependee.
       *
       * @param dependee project to add the implicit dependency on.
       */
      public addImplicitDependency(dependee: Project | string) {
        this._implicitDependencies.push(
          dependee instanceof Project ? dependee.name : dependee
        );
      }

      /**
       * Generate a nx block in the package.json if this is a NodeProject. Otherwise generate a project.json with
       * the relevant NX configuration.
       */
      synthesize() {
        if (this.project instanceof NodeProject) {
          this._implicitDependencies.length > 0 &&
            this.project
              .tryFindObjectFile("package.json")
              ?.addOverride("nx.implicitDependencies", this._implicitDependencies);
        } else {
          const projectJson =
            this.project.tryFindObjectFile("project.json") ||
            new JsonFile(this.project, "project.json", {
              readonly: true,
              marker: true,
              obj: {},
            });

          const projectPath = path.relative(
            this.project.root.outdir,
            this.project.outdir
          );
          projectJson.addOverride("name", this.project.name);
          projectJson.addOverride("root", projectPath);
          this._implicitDependencies.length > 0 &&
            projectJson.addOverride(
              "implicitDependencies",
              this._implicitDependencies
            );
          projectJson.addOverride(
            "targets",
            this.project.tasks.all.reduce(
              (p, c) => ({
                [c.name]: {
                  executor: "nx:run-commands",
                  options: {
                    command: `${buildDownloadExecutableCommand(
                      (this.project.root as NodeProject).package.packageManager,
                      `projen ${c.name}`
                    )}`,
                    cwd: projectPath,
                  },
                },
                ...p,
              }),
              {}
            )
          );
        }
        super.synthesize();
      }
    }