Switching to yarn

.github/workflows/check-dist.yml

@@ -24,12 +24,12 @@ jobs:
           node-version: 16.x
 
       - name: Install dependencies
-        run: npm ci
+        run: yarn
 
       - name: Rebuild the dist/ directory
         run: |
-          npm run build
-          npm run package
+          yarn build
+          yarn package
       - name: Compare the expected and actual dist/ directories
         run: |
           if [ "$(git diff --ignore-space-at-eol dist/ | wc -l)" -gt "0" ]; then

package.json

@@ -9,7 +9,7 @@
     "lint": "eslint src/**/*.ts",
     "package": "ncc build --source-map --license licenses.txt",
     "test": "jest",
-    "all": "npm run build && npm run format && npm run lint && npm run package && npm test"
+    "all": "yarn build && yarn format && yarn lint && yarn package && yarn test"
   },
   "dependencies": {
     "@actions/core": "^1.10.0",

src/index.ts

@@ -3,7 +3,7 @@ import {ensureYarnIsInstalled} from './yarn'
 import {run} from './run'
 import {resolve} from 'path'
 
-const main = async () => {
+const main = async (): Promise<void> => {
   await ensureYarnIsInstalled()
 
   const cmd: string = getInput('cmd', {required: true})

src/run.ts

@@ -1,5 +1,5 @@
 import {exec} from '@actions/exec'
 
-export const run = async (cmd: string, {cwd}: {cwd: string}) => {
+export const run = async (cmd: string, {cwd}: {cwd: string}): Promise<void> => {
   await exec('yarn', cmd.split(' '), {cwd})
 }

src/yarn.ts

@@ -2,7 +2,7 @@ import {debug, setOutput} from '@actions/core'
 import {exec, getExecOutput} from '@actions/exec'
 import {which} from '@actions/io'
 
-export const ensureYarnIsInstalled = async () => {
+export const ensureYarnIsInstalled = async (): Promise<void> => {
   try {
     await which('yarn', true)
   } catch (e) {