How to use @lerna/run-lifecycle - 3 common examples

// inject --dist-tag into opts, if present
    const distTag = this.getDistTag();

    if (distTag) {
      this.conf.set("tag", distTag.trim(), "cli");
    }

    // a "rooted leaf" is the regrettable pattern of adding "." to the "packages" config in lerna.json
    this.hasRootedLeaf = this.packageGraph.has(this.project.manifest.name);

    if (this.hasRootedLeaf) {
      this.logger.info("publish", "rooted leaf detected, skipping synthetic root lifecycles");
    }

    this.runPackageLifecycle = createRunner(this.options);

    // don't execute recursively if run from a poorly-named script
    this.runRootLifecycle = /^(pre|post)?publish$/.test(process.env.npm_lifecycle_event)
      ? stage => {
          this.logger.warn("lifecycle", "Skipping root %j because it has already been called", stage);
        }
      : stage => this.runPackageLifecycle(this.project.manifest, stage);

    let chain = Promise.resolve();

    if (this.options.bump === "from-git") {
      chain = chain.then(() => this.detectFromGit());
    } else if (this.options.bump === "from-package") {
      chain = chain.then(() => this.detectFromPackage());
    } else if (this.options.canary) {
      chain = chain.then(() => this.detectCanaryVersions());

if (!this.updates.length) {
      this.logger.success(`No changed packages to ${this.composed ? "publish" : "version"}`);

      // still exits zero, aka "ok"
      return false;
    }

    // a "rooted leaf" is the regrettable pattern of adding "." to the "packages" config in lerna.json
    this.hasRootedLeaf = this.packageGraph.has(this.project.manifest.name);

    if (this.hasRootedLeaf && !this.composed) {
      this.logger.info("version", "rooted leaf detected, skipping synthetic root lifecycles");
    }

    this.runPackageLifecycle = createRunner(this.options);

    // don't execute recursively if run from a poorly-named script
    this.runRootLifecycle = /^(pre|post)?version$/.test(process.env.npm_lifecycle_event)
      ? stage => {
          this.logger.warn("lifecycle", "Skipping root %j because it has already been called", stage);
        }
      : stage => this.runPackageLifecycle(this.project.manifest, stage);

    const tasks = [
      () => this.getVersionsForUpdates(),
      versions => this.setUpdatesForVersions(versions),
      () => this.confirmVersions(),
    ];

    // amending a commit probably means the working tree is dirty
    if (this.commitAndTag && this.gitOpts.amend !== true) {

if (nohoist) {
        if (!Array.isArray(nohoist)) {
          // `--nohoist` single
          hoisting = hoisting.concat(`!${nohoist}`);
        } else {
          // `--nohoist` multiple or lerna.json `nohoist: [...]`
          hoisting = hoisting.concat(nohoist.map(str => `!${str}`));
        }
      }

      this.logger.verbose("hoist", "using globs %j", hoisting);
      this.hoisting = hoisting;
    }

    this.runPackageLifecycle = createRunner({ registry });
    this.npmConfig = {
      registry,
      npmClient,
      npmClientArgs,
      mutex,
    };

    if (npmClient === "npm" && this.options.ci && hasNpmVersion(">=5.7.0")) {
      // never `npm ci` when hoisting
      this.npmConfig.subCommand = this.hoisting ? "install" : "ci";

      if (this.hoisting) {
        // don't mutate lockfiles in CI
        this.npmConfig.npmClientArgs.unshift("--no-save");
      }
    }