Fix rollup warning about broken sourcemap (mui#922)

By replacing `@class` annotation with `@__PURE__` we broke rollup internal sourcemap generator. Found the fix here https://github.com/ex-machine/rollup-plugin-ts-treeshaking/blob/master/index.js
mnajdova · Feb 18, 2019 · 0ffc2a7 · 0ffc2a7
1 parent bf6dec1
commit 0ffc2a7
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Showing 2 changed files with 12 additions and 17 deletions.
diff --git a/lib/package-lock.json b/lib/package-lock.json
diff --git a/lib/rollup.config.js b/lib/rollup.config.js
@@ -82,13 +82,10 @@ export default [
       nodeResolve({ extensions }),
       typescriptPlugin({ typescript, tsconfig }),
       babel(babelOptions),
-      {
-        transform(code) {
-          if (code.includes('/** @class */')) {
-            return code.replace(/\/\*\* @class \*\//g, '/*@__PURE__*/');
-          }
-        },
-      },
+      replace({
+        delimiters: ['', ''],
+        values: { '/** @class */': '/*@__PURE__*/' },
+      }),
       sizeSnapshot(),
     ],
   },