Simplified the submoduleDirectories

src/git-command-manager.ts

@@ -57,7 +57,7 @@ export interface IGitCommandManager {
   submoduleUpdate(
     fetchDepth: number,
     recursive: boolean,
-    submoduleDirectories: string[] | null
+    submoduleDirectories: string[]
   ): Promise<void>
   submoduleStatus(): Promise<boolean>
   tagExists(pattern: string): Promise<boolean>
@@ -416,35 +416,25 @@ class GitCommandManager {
   async submoduleUpdate(
     fetchDepth: number,
     recursive: boolean,
-    submoduleDirectories: string[] | null
+    submoduleDirectories: string[]
   ): Promise<void> {
-    if (submoduleDirectories) {
-      for (const submodule of submoduleDirectories) {
-        const args = ['-c', 'protocol.version=2']
-        args.push('submodule', 'update', '--init', '--force', submodule)
-        if (fetchDepth > 0) {
-          args.push(`--depth=${fetchDepth}`)
-        }
-
-        if (recursive) {
-          args.push('--recursive')
-        }
-
-        await this.execGit(args)
-      }
-    } else {
-      const args = ['-c', 'protocol.version=2']
-      args.push('submodule', 'update', '--init', '--force')
-      if (fetchDepth > 0) {
-        args.push(`--depth=${fetchDepth}`)
-      }
-
-      if (recursive) {
-        args.push('--recursive')
-      }
-
-      await this.execGit(args)
+    const args = ['-c', 'protocol.version=2']
+    args.push(
+      'submodule',
+      'update',
+      '--init',
+      '--force',
+      ...submoduleDirectories
+    )
+    if (fetchDepth > 0) {
+      args.push(`--depth=${fetchDepth}`)
     }
+
+    if (recursive) {
+      args.push('--recursive')
+    }
+
+    await this.execGit(args)
   }
 
   async submoduleStatus(): Promise<boolean> {

src/git-source-settings.ts

@@ -77,7 +77,7 @@ export interface IGitSourceSettings {
   /**
    * Indicates which submodule paths to checkout
    */
-  submoduleDirectories: string[] | null
+  submoduleDirectories: string[]
 
   /**
    * The auth token to use when fetching the repository

src/input-helper.ts

@@ -125,7 +125,7 @@ export async function getInputs(): Promise<IGitSourceSettings> {
   // Submodules
   result.submodules = false
   result.nestedSubmodules = false
-  result.submoduleDirectories = null
+  result.submoduleDirectories = []
   const submodulesString = (core.getInput('submodules') || '').toUpperCase()
   if (submodulesString == 'RECURSIVE') {
     result.submodules = true
@@ -138,8 +138,6 @@ export async function getInputs(): Promise<IGitSourceSettings> {
   if (submoduleDirectories.length > 0) {
     result.submoduleDirectories = submoduleDirectories
     if (!result.submodules) result.submodules = true
-  } else {
-    result.submoduleDirectories = null
   }
 
   core.debug(`submodules = ${result.submodules}`)