build: cross-platform "packageAlpha" task

Use typescript instead of shell so that the task runs on Windows.

Author: justinmk3

build-scripts/packageAlpha.ts

@@ -0,0 +1,32 @@
+/*!
+ * Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+//
+// Creates an artifact that can be given to users for testing alpha builds:
+//
+//     aws-toolkit-vscode-1.99.0-SNAPSHOT.vsix
+//
+// The script works like this:
+// 1. temporarily change `version` in package.json
+// 2. invoke `vsce package`
+// 3. restore the original package.json
+//
+
+import * as child_process from 'child_process'
+import * as fs from 'fs-extra'
+
+const packageJsonFile = './package.json'
+// Create a backup so that we can restore the original later.
+fs.copyFileSync(packageJsonFile, `${packageJsonFile}.bk`)
+
+const packageJson = JSON.parse(fs.readFileSync('./package.json', { encoding: 'UTF-8' }).toString())
+packageJson.version = '1.99.0-SNAPSHOT'
+
+fs.writeFileSync(packageJsonFile, JSON.stringify(packageJson, undefined, '  '))
+
+child_process.execSync(`vsce package`)
+
+// Restore the original package.json.
+fs.copyFileSync(`${packageJsonFile}.bk`, packageJsonFile)

package.json

@@ -851,7 +851,7 @@
         "lint": "eslint -c .eslintrc.js --ext .ts .",
         "lintfix": "eslint -c .eslintrc.js --fix --ext .ts .",
         "package": "vsce package",
-        "packageAlpha": "sed -i .bk 's/\\(    \"version\":\\) .*/\\1 \"1.99.0-SNAPSHOT\",/' package.json && vsce package && mv package.json.bk package.json",
+        "packageAlpha": "ts-node ./build-scripts/packageAlpha.ts",
         "install-plugin": "vsce package -o aws-toolkit-vscode-test.vsix && code --install-extension aws-toolkit-vscode-test.vsix",
         "generateTelemetry": "node node_modules/@aws-toolkits/telemetry/lib/generateTelemetry.js --extraInput=src/shared/telemetry/vscodeTelemetry.json --output=src/shared/telemetry/telemetry.gen.ts",
         "generateConfigurationAttributes": "ts-node ./build-scripts/generateConfigurationAttributes.ts",