From 1e71798467e3fa2e1483873d9b33d93016fe6b4d Mon Sep 17 00:00:00 2001
From: Sidharth Vinod <sidharthv96@gmail.com>
Date: Fri, 23 Sep 2022 17:20:40 +0530
Subject: [PATCH] fix: Core build

---
 .vite/build.ts | 18 +++++++++++-------
 src/mermaid.ts |  1 -
 2 files changed, 11 insertions(+), 8 deletions(-)

diff --git a/.vite/build.ts b/.vite/build.ts
index ed99421f6..c4df49ea2 100644
--- a/.vite/build.ts
+++ b/.vite/build.ts
@@ -36,13 +36,17 @@ export const getBuildConfig = ({ minify, core, watch }: BuildOptions): InlineCon
   ];
 
   if (core) {
+    // Core build is used to generate file without bundled dependencies.
+    // This is used by downstream projects to bundle dependencies themselves.
     external.push(...Object.keys(dependencies));
-    output = {
-      name: 'mermaid',
-      format: 'esm',
-      sourcemap: true,
-      entryFileNames: `[name].core.mjs`,
-    };
+    // This needs to be an array. Otherwise vite will build esm & umd with same name and overwrite esm with umd.
+    output = [
+      {
+        format: 'esm',
+        sourcemap: true,
+        entryFileNames: `[name].core.mjs`,
+      },
+    ];
   }
 
   const config: InlineConfig = {
@@ -81,5 +85,5 @@ if (watch) {
 } else {
   build(getBuildConfig({ minify: false }));
   build(getBuildConfig({ minify: 'esbuild' }));
-  build(getBuildConfig({ minify: true, core: true }));
+  build(getBuildConfig({ minify: false, core: true }));
 }
diff --git a/src/mermaid.ts b/src/mermaid.ts
index 6eec7ea66..809387f60 100644
--- a/src/mermaid.ts
+++ b/src/mermaid.ts
@@ -1,4 +1,3 @@
-'use strict';
 /**
  * Web page integration module for the mermaid framework. It uses the mermaidAPI for mermaid
  * functionality and to render the diagrams to svg code.