Merge branch 'development'master

* development: (81 commits)
  Publish
  Updated CHANGELOGS
  print out error message and stack
  immediately return the patch incremented version if no changelog entries exist
  Put python package above TS/JS packages
  Reduce title size
  reduce text side in README
  Improve top-level README
  Fix prettier
  remove unused flag
  Add CHANGELOG entry
  Fix additional comments
  Improve comments
  Add migrations, contract-addresses and contract-artifacts to Developers home
  Create migrations doc reference page
  Add additional CHANGELOG to types package
  Add CHANGELOG entry
  Fix prettier
  Fix `SimpleContractArtifact` type
  Update abi-gen-wrappers
  ...

3 files changed, 14 insertions, 2 deletions

diff --git a/packages/monorepo-scripts/package.json b/packages/monorepo-scripts/package.json
index a31085014..9af18a6b7 100644
--- a/packages/monorepo-scripts/package.json
+++ b/packages/monorepo-scripts/package.json
@@ -1,7 +1,7 @@
 {
     "private": true,
     "name": "@0x/monorepo-scripts",
-    "version": "1.0.13",
+    "version": "1.0.14",
     "engines": {
         "node": ">=6.12"
     },
diff --git a/packages/monorepo-scripts/src/prepublish_checks.ts b/packages/monorepo-scripts/src/prepublish_checks.ts
index 5f603ebc7..60cdccf1d 100644
--- a/packages/monorepo-scripts/src/prepublish_checks.ts
+++ b/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> {
@@ -183,7 +184,17 @@ 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);
+    utils.log(err);
     process.exit(1);
 });
diff --git a/packages/monorepo-scripts/src/utils/utils.ts b/packages/monorepo-scripts/src/utils/utils.ts
index 44ff971e8..95b187cc2 100644
--- a/packages/monorepo-scripts/src/utils/utils.ts
+++ b/packages/monorepo-scripts/src/utils/utils.ts
@@ -91,6 +91,7 @@ export const utils = {
         const changelog = changelogUtils.getChangelogOrCreateIfMissing(packageName, packageLocation);
         if (_.isEmpty(changelog)) {
             nextVersionIfValid = semver.inc(currentVersion, 'patch');
+            return nextVersionIfValid as string;
         }
         const lastEntry = changelog[0];
         if (semver.gt(currentVersion, lastEntry.version)) {