Check for instant heap production credentials in pre-publish step

packages/monorepo-scripts/src/prepublish_checks.ts

@@ -17,6 +17,7 @@ async function prepublishChecksAsync(): Promise<void> {
     await checkChangelogFormatAsync(updatedPublicPackages);
     await checkGitTagsForNextVersionAndDeleteIfExistAsync(updatedPublicPackages);
     await checkPublishRequiredSetupAsync();
+    checkRequiredEnvVariables();
 }
 
 async function checkGitTagsForNextVersionAndDeleteIfExistAsync(updatedPublicPackages: Package[]): Promise<void> {
@@ -183,6 +184,16 @@ async function checkPublishRequiredSetupAsync(): Promise<void> {
     }
 }
 
+const checkRequiredEnvVariables = () => {
+    utils.log('Checking required environment variables...');
+    const requiredEnvVars = ['INSTANT_HEAP_ANALYTICS_ID_PRODUCTION'];
+    requiredEnvVars.forEach(requiredEnvVarName => {
+        if (_.isUndefined(process.env[requiredEnvVarName])) {
+            throw new Error(`Must have ${requiredEnvVarName} set`);
+        }
+    });
+};
+
 prepublishChecksAsync().catch(err => {
     utils.log(err.message);
     process.exit(1);