Role that installs node.js with npm and optionally yarn

node_js/defaults/main.yml

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+---
+node_js_repo_version: 8
+node_js_repo_name: 'node_{{ node_js_repo_version }}.x'
+node_js_repo_key: https://deb.nodesource.com/gpgkey/nodesource.gpg.key
+node_js_repo_urls:
+  - 'deb https://deb.nodesource.com/{{ node_js_repo_name }} {{ ansible_distribution_release }} main'
+  - 'deb-src https://deb.nodesource.com/{{ node_js_repo_name }} {{ ansible_distribution_release }} main'
+
+node_js_pkgs:
+  - nodejs
+  - npm
+
+node_js_pkg_state: present
+
+node_js_yarn_install: False
+node_js_yarn_repo_key: https://dl.yarnpkg.com/debian/pubkey.gpg
+node_js_yarn_repo_urls:
+  - 'deb https://dl.yarnpkg.com/debian/ stable main'
+
+node_js_yarn_pkgs:
+  - yarn

node_js/tasks/main.yml

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+- block:
+  - name: Install the Node.js repository key
+    apt_key: url={{ node_js_repo_key }} state=present
+
+  - name: Install the Node.js repository configuration
+    apt_repository: repo={{ item }} state=present update_cache=True
+    with_items: '{{ node_js_repo_urls }}'
+
+  - name: Install the Node.js packages
+    apt: pkg={{ item }} state={{ node_js_pkg_state }} update_cache=True cache_valid_time=1800
+    with_items: '{{ node_js_pkgs }}'
+
+  tags: [ 'nodejs', 'node_js' ]
+
+- block:
+  - name: Install the Node.js yarn repository key
+    apt_key: url={{ node_js_yarn_repo_key }} state=present
+
+  - name: Install the Node.js yarn repository configuration
+    apt_repository: repo={{ item }} state=present update_cache=True
+    with_items: '{{ node_js_yarn_repo_urls }}'
+
+  - name: Install the Node.js yarn packages
+    apt: pkg={{ item }} state={{ node_js_pkg_state }} update_cache=True cache_valid_time=1800
+    with_items: '{{ node_js_yarn_pkgs }}'
+
+  when: node_js_yarn_install
+  tags: [ 'nodejs', 'node_js', 'yarn', 'node_js_yarn' ]
+
+- block:
+  - name: Remove the Node.js yarn repository key
+    apt_key: url={{ node_js_yarn_repo_key }} state=absent
+
+  - name: Install the Node.js yarn repository configuration
+    apt_repository: repo={{ item }} state=absent update_cache=True
+    with_items: '{{ node_js_yarn_repo_urls }}'
+
+  - name: Install the Node.js yarn packages
+    apt: pkg={{ item }} state=absent update_cache=True cache_valid_time=1800
+    with_items: '{{ node_js_yarn_pkgs }}'
+
+  when: not node_js_yarn_install
+  tags: [ 'nodejs', 'node_js', 'yarn', 'node_js_yarn' ]
+