Updates dependencies. (#24)

index.js

@@ -1,6 +1,5 @@
 const core = require('@actions/core');
 const github = require('@actions/github');
-const dotProp = require('dot-prop');
 const fs = require('fs-extra');
 const semver = require('semver');
 const dedent = require('dedent');
@@ -10,14 +9,20 @@ const main = async () => {
         const {draft: isDraft, prerelease: isPrerelease, tag_name: gitTag} = github.context.payload.release;
         const gitTagWithoutV = gitTag.slice(1);
         const packageJson = await fs.readJson('./package.json');
-        const packageJsonVersion = dotProp.get(packageJson, 'version', undefined);
+        const packageJsonVersion = packageJson?.version;
 
         if (isDraft) {
             core.setFailed('Release is a draft. Skip publish.');
 
             return;
         }
 
+        if (!packageJsonVersion) {
+            core.setFailed('Package.json is missing version.');
+
+            return;
+        }
+
         if (!gitTag.startsWith('v')) {
             core.setFailed('Release git tag does not start with `v`, ie. `v1.2.3`.');
 

index.test.js

@@ -34,8 +34,22 @@ describe('index', () => {
         expect(core.setFailed).toHaveBeenCalledWith('Release is a draft. Skip publish.');
     });
 
+    test('should fail if package.json is missing version', async () => {
+        jest.spyOn(core, 'setFailed');
+        fs.readJSON.mockReturnValue({});
+        github.context = generateGitHubRelease({});
+
+        await action();
+
+        expect(core.setFailed).toHaveBeenCalledTimes(1);
+        expect(core.setFailed).toHaveBeenCalledWith('Package.json is missing version.');
+    });
+
     test('should fail if release git tag does not start with a "v"', async () => {
         jest.spyOn(core, 'setFailed');
+        fs.readJSON.mockReturnValue({
+            version: '1.2.3',
+        });
         github.context = generateGitHubRelease({
             gitTag: '1.2.3',
         });