feat: consume shouldprepare hook

Author: Dimitar Kerezov

Diff for: lib/before-shouldPrepare.js

@@ -0,0 +1,24 @@
+const { join } = require("path");
+const { readFileSync, existsSync, writeFileSync } = require("fs");
+const envOptionsCacheFileLocation = join(__dirname, "env.cache.json");
+
+module.exports = function (hookArgs) {
+	const platformInfo = hookArgs.platformInfo;
+	if (platformInfo && platformInfo.appFilesUpdaterOptions && platformInfo.appFilesUpdaterOptions.bundle) {
+		return (args, originalMethod) => {
+			return originalMethod(...args).then(originalShouldPrepare => {
+				const currentEnvString = JSON.stringify(platformInfo.env || {});
+				if (existsSync(envOptionsCacheFileLocation)) {
+					const oldEnvOptionsString = readFileSync(envOptionsCacheFileLocation).toString();
+					if (oldEnvOptionsString === currentEnvString) {
+						return originalShouldPrepare;
+					}
+				}
+
+				writeFileSync(envOptionsCacheFileLocation, currentEnvString);
+
+				return true;
+			});
+		};
+	}
+}

Diff for: package.json

@@ -30,6 +30,11 @@
         "script": "lib/before-watchPatterns.js",
         "inject": true
       },
+      {
+        "type": "before-shouldPrepare",
+        "script": "lib/before-shouldPrepare.js",
+        "inject": true
+      },
       {
         "type": "after-prepare",
         "script": "lib/after-prepare.js",