Skip publishing on Build.Reason === PullRequest

azure-pipelines.yml

@@ -55,4 +55,4 @@ jobs:
         displayName: 'Publish to NPM'
         env:
           NPM_TOKEN: $(NPM_CI_TOKEN)
-          PR_BRANCH: $[ coalesce(variables['System.PullRequest.SourceBranch'], 'not-found') ]
+          BUILD_REASON: $(variables['Build.Reason'])

tools/publish-dev/index.js

@@ -18,9 +18,9 @@ const VERSION = require( packagejson ).version;
 
 const {
 
+    BUILD_REASON,
     GIT_BRANCH,
     NPM_TOKEN,
-    PR_BRANCH,
 
 } = process.env;
 
@@ -54,7 +54,7 @@ function exec( command, print = true ) {
 
 // assertions
 
-if ( PR_BRANCH !== "not-found" ) {
+if ( BUILD_REASON && BUILD_REASON === "PullRequest" ) {
 
     console.log( "Skipping publish, PR's are not published." );
     process.exit( 0 );