fixing method call for esm build (ampproject#19691)

PHCCorso · Dec 10, 2018 · fe1e8fb · fe1e8fb
1 parent a94f150
commit fe1e8fb
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/build-system/single-pass.js b/build-system/single-pass.js
@@ -432,7 +432,7 @@ function transformPathsToTempDir(graph, config) {
     } else {
       const {code} = babel.transformFileSync(f, {
         plugins: conf.plugins(
-            /* isEsmBuild */ config.define.indexOf['ESM_BUILD=true'] !== -1,
+            /* isEsmBuild */ config.define.indexOf('ESM_BUILD=true') !== -1,
             /* isCommonJsModule */ isCommonJsModule(f)),
         retainLines: true,
       });