feat: bump senamtic to v19, migrate to node v18

Closes #173

BREAKING CHANGE: Runs using nodejs v18.x and npm v8 now,
so any dependencies specified in extends or additional_packages
that have dependency conflicts with semantic-release v19.x will
cause the action to fail.

.github/workflows/validate.yml

@@ -7,11 +7,11 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
 
-      - uses: actions/setup-node@v1
+      - uses: actions/setup-node@v2
         with:
-          node-version: 12.x
+          node-version: 18.7.0
 
       - run: npm ci
 
@@ -42,7 +42,7 @@ jobs:
           tag_format: 'v${version}'
           extends: '@semantic-release/apm-config'
           additional_packages: |
-            ['@semantic-release/apm@3.0.0', '@semantic-release/git', '@semantic-release/apm-config']
+            ['@semantic-release/apm', '@semantic-release/git']
           plugins: |
             ['@semantic-release/commit-analyzer', '@semantic-release/release-notes-generator', '@semantic-release/github', '@semantic-release/apm', '@semantic-release/git']
         env:

.nvmrc

@@ -0,0 +1 @@
+18.7.0

Dockerfile

@@ -1,4 +1,4 @@
-FROM node:12.20.2
+FROM node:18.7.0
 
 # nice clean home for our action files
 RUN mkdir /action

action.yml

@@ -14,7 +14,7 @@ inputs:
     required: false
   extends:
     description:
-      'List of modules or file paths containing .
+      'String or array of modules or file paths containing a shareable configuration.
       https://github.com/semantic-release/semantic-release/blob/master/docs/usage/configuration.md#extends'
     required: false
   plugins:

entrypoint.js

@@ -22,9 +22,14 @@ const installPackages = packages => {
   try {
     const packagesArr = arrify(packages);
     core.debug(`Installing additional packages: ${packagesArr}`);
-    const result = spawnSync('npm', ['install', '--no-save', ...packagesArr]);
+    const spawn = spawnSync('npm', ['install', '--no-save', ...packagesArr], {
+      stdio: ['inherit', 'inherit', 'pipe'],
+    });
+    if (spawn.status !== 0) {
+      throw new Error(spawn.stderr);
+    }
     core.debug(`Packages installed.`);
-    return result;
+    return spawn;
   } catch (err) {
     core.debug(`Error installing additional packages: ${packages}`);
     throw err;
@@ -41,7 +46,8 @@ async function run() {
   const branch = parseInput(core.getInput('branch', { required: false }));
   const branches = parseInput(core.getInput('branches', { required: false }));
   const plugins = parseInput(core.getInput('plugins', { required: false }));
-  const additionalPackages = parseInput(core.getInput('additional_packages', { required: false }));
+  const additionalPackages =
+    parseInput(core.getInput('additional_packages', { required: false })) || [];
   const extendsInput = parseInput(core.getInput('extends', { required: false }));
   let dryRun = core.getInput('dry_run', { required: false });
   dryRun = dryRun !== '' ? dryRun === 'true' : '';
@@ -51,13 +57,17 @@ async function run() {
   core.debug(`branch input: ${branch}`);
   core.debug(`branches input: ${branches}`);
   core.debug(`plugins input: ${plugins}`);
+  core.debug(`additional_packages input: ${additionalPackages}`);
   core.debug(`extends input: ${extendsInput}`);
   core.debug(`dry_run input: ${dryRun}`);
   core.debug(`repository_url input: ${repositoryUrl}`);
   core.debug(`tag_format input: ${tagFormat}`);
 
-  // install additional packages
-  if (additionalPackages) {
+  // install additional plugins & shareable configurations
+  if (extendsInput) {
+    additionalPackages.push(...arrify(extendsInput));
+  }
+  if (additionalPackages.length) {
     installPackages(additionalPackages);
   }