From be4f16d2453375348750f5e21b58524cdee770d3 Mon Sep 17 00:00:00 2001
From: Adam Bradley <adamdbradley@users.noreply.github.com>
Date: Tue, 28 Jul 2020 09:33:20 -0500
Subject: [PATCH] chore(parse5): update parse5 bundling

---
 scripts/bundles/plugins/parse5-plugin.ts | 25 ++++++++++--------------
 1 file changed, 10 insertions(+), 15 deletions(-)

diff --git a/scripts/bundles/plugins/parse5-plugin.ts b/scripts/bundles/plugins/parse5-plugin.ts
index 80a575f2bd7..f6bc015f311 100644
--- a/scripts/bundles/plugins/parse5-plugin.ts
+++ b/scripts/bundles/plugins/parse5-plugin.ts
@@ -67,24 +67,19 @@ async function bundleParse5(opts: BuildOptions) {
 
   const { output } = await rollupBuild.generate({
     format: 'iife',
-    name: 'EXPORT_PARSE5',
-    footer: `
-      export function parse(html, options) {
-        return parse5.parse(html, options);
-      }
-      export function parseFragment(html, options) {
-        return parse5.parseFragment(html, options);
-      }
-    `,
+    name: 'PARSE5',
+    footer: ['export const parse = PARSE5.parse;', 'export const parseFragment = PARSE5.parseFragment;'].join('\n'),
+    preferConst: true,
+    strict: false,
   });
 
-  let code = output[0].code;
-
-  const minify = terser.minify(code);
+  const minified = terser.minify(output[0].code);
 
-  code = minify.code.replace('var EXPORT_PARSE5=function', 'const parse5=/*@__PURE__*/function');
+  if (minified.error) {
+    throw minified.error;
+  }
 
-  await fs.writeFile(cacheFile, code);
+  await fs.writeFile(cacheFile, minified.code);
 
-  return code;
+  return minified.code;
 }