Support npm-shrinkwrap.json out-of-the-box

README.md

@@ -43,7 +43,7 @@ nvm lts syntax: `lts/erbium`, `lts/fermium`, `lts/*`
 
 The action has a built-in functionality for caching and restoring dependencies. It uses [actions/cache](https://github.com/actions/cache) under the hood for caching dependencies but requires less configuration settings. Supported package managers are `npm`, `yarn`, `pnpm` (v6.10+). The `cache` input is optional, and caching is turned off by default.
 
-The action defaults to search for the dependency file (`package-lock.json` or `yarn.lock`) in the repository root, and uses its hash as a part of the cache key. Use `cache-dependency-path` for cases when multiple dependency files are used, or they are located in different subdirectories.
+The action defaults to search for the dependency file (`package-lock.json`, `npm-shrinkwrap.json` or `yarn.lock`) in the repository root, and uses its hash as a part of the cache key. Use `cache-dependency-path` for cases when multiple dependency files are used, or they are located in different subdirectories.
 
 See the examples of using cache for `yarn` / `pnpm` and  `cache-dependency-path` input in the [Advanced usage](docs/advanced-usage.md#caching-packages-dependencies) guide.
 

dist/cache-save/index.js

@@ -3813,7 +3813,7 @@ const core = __importStar(__webpack_require__(470));
 const exec = __importStar(__webpack_require__(986));
 exports.supportedPackageManagers = {
     npm: {
-        lockFilePatterns: ['package-lock.json', 'yarn.lock'],
+        lockFilePatterns: ['package-lock.json', 'npm-shrinkwrap.json', 'yarn.lock'],
         getCacheFolderCommand: 'npm config get cache'
     },
     pnpm: {

dist/setup/index.js

@@ -46072,7 +46072,7 @@ const core = __importStar(__webpack_require__(470));
 const exec = __importStar(__webpack_require__(986));
 exports.supportedPackageManagers = {
     npm: {
-        lockFilePatterns: ['package-lock.json', 'yarn.lock'],
+        lockFilePatterns: ['package-lock.json', 'npm-shrinkwrap.json', 'yarn.lock'],
         getCacheFolderCommand: 'npm config get cache'
     },
     pnpm: {

src/cache-utils.ts

@@ -12,7 +12,7 @@ export interface PackageManagerInfo {
 
 export const supportedPackageManagers: SupportedPackageManagers = {
   npm: {
-    lockFilePatterns: ['package-lock.json', 'yarn.lock'],
+    lockFilePatterns: ['package-lock.json', 'npm-shrinkwrap.json', 'yarn.lock'],
     getCacheFolderCommand: 'npm config get cache'
   },
   pnpm: {