build: fix husky autoinstall #3433

Problem:
husky doesn't autoinstall since
c7637c2

Solution:
auto install husky only if not running in CI.

Author: justinmk3

package.json

@@ -3431,6 +3431,7 @@
         }
     },
     "scripts": {
+        "prepare": "ts-node ./scripts/build/prepare.ts",
         "vscode:prepublish": "npm run clean && npm run buildScripts && webpack --mode production && npm run copyFiles -- --webpacked",
         "clean": "ts-node ./scripts/clean.ts dist",
         "reset": "npm run clean -- node_modules && npm install",

scripts/build/prepare.ts

@@ -0,0 +1,33 @@
+/*!
+ * Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+//
+// Performs NPM "prepare" step, except when running in CI.
+//
+// prepare: https://docs.npmjs.com/cli/v9/using-npm/scripts#prepare-and-prepublish:
+//  - Runs BEFORE the package is packed, i.e. during "npm publish" AND "npm pack".
+//  - Runs on local "npm install".
+//  - Runs AFTER `prepublish`, but BEFORE `prepublishOnly`.
+//  - Runs in the background. To see the output, run with "--foreground-scripts".
+//
+
+import * as child_process from 'child_process'
+
+/**
+ * Returns true if the current build is running on CI (build server).
+ */
+export function isCI(): boolean {
+    return undefined !== process.env['GITHUB_ACTION'] || undefined !== process.env['CODEBUILD_BUILD_ID']
+}
+
+function main() {
+    if (isCI()) {
+        console.log('prepare: skipped (running in CI)')
+        return
+    }
+    child_process.execSync('husky install', { stdio: 'inherit' })
+}
+
+main()

src/shared/systemUtilities.ts

@@ -332,11 +332,4 @@ export class SystemUtilities {
             getLogger().warn('findBashPath: failed: %s', proc)
         }
     }
-
-    /**
-     * Returns true if the current build is running on CI (build server).
-     */
-    public static isCI(): boolean {
-        return undefined !== process.env['CODEBUILD_BUILD_ID']
-    }
 }

src/shared/vscode/env.ts

@@ -37,7 +37,7 @@ class DefaultEnv implements Env {
  * Returns true if the current build is running on CI (build server).
  */
 export function isCI(): boolean {
-    return undefined !== process.env['CODEBUILD_BUILD_ID']
+    return undefined !== process.env['GITHUB_ACTION'] || undefined !== process.env['CODEBUILD_BUILD_ID']
 }
 
 /** Variable added via webpack */