From e60922981be918ba4e6d9d857d9834b0d586df5b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bartek=20Iwa=C5=84czuk?= <biwanczuk@gmail.com>
Date: Wed, 17 Jun 2020 19:44:40 +0200
Subject: Revert "Deno.bundle supports targets < ES2017. (#6328)" (#6342)

This reverts commit 75bb9dbdfc7f8b4e8d17978808ae575e61843aef.
---
 deno_typescript/system_loader.js | 41 ++++++++++++++++++++++++++--------------
 1 file changed, 27 insertions(+), 14 deletions(-)

(limited to 'deno_typescript/system_loader.js')

diff --git a/deno_typescript/system_loader.js b/deno_typescript/system_loader.js
index 55f88e8c7..fdf1fa872 100644
--- a/deno_typescript/system_loader.js
+++ b/deno_typescript/system_loader.js
@@ -6,14 +6,17 @@
 
 // @ts-nocheck
 /* eslint-disable */
-let System, __instantiate;
+let System, __instantiateAsync, __instantiate;
+
 (() => {
-  const r = Object.create(null);
+  const r = new Map();
+
   System = {
     register(id, d, f) {
-      r[id] = { d, f, exp: {} };
+      r.set(id, { d, f, exp: {} });
     },
   };
+
   async function dI(mid, src) {
     let id = mid.replace(/\.\w+$/i, "");
     if (id.includes("./")) {
@@ -30,8 +33,9 @@ let System, __instantiate;
       if (s < sa.length) oa.push(...sa.slice(s));
       id = oa.reverse().join("/");
     }
-    return id in r ? gExpA(id) : import(mid);
+    return r.has(id) ? gExpA(id) : import(mid);
   }
+
   function gC(id, main) {
     return {
       id,
@@ -39,6 +43,7 @@ let System, __instantiate;
       meta: { url: id, main },
     };
   }
+
   function gE(exp) {
     return (id, v) => {
       v = typeof id === "string" ? { [id]: v } : id;
@@ -51,10 +56,9 @@ let System, __instantiate;
       }
     };
   }
+
   function rF(main) {
-    let m;
-    for (const id in r) {
-      m = r[id];
+    for (const [id, m] of r.entries()) {
       const { f, exp } = m;
       const { execute: e, setters: s } = f(gE(exp), gC(id, id === main));
       delete m.f;
@@ -62,9 +66,10 @@ let System, __instantiate;
       m.s = s;
     }
   }
+
   async function gExpA(id) {
-    if (!(id in r)) return;
-    const m = r[id];
+    if (!r.has(id)) return;
+    const m = r.get(id);
     if (m.s) {
       const { d, e, s } = m;
       delete m.s;
@@ -75,9 +80,10 @@ let System, __instantiate;
     }
     return m.exp;
   }
+
   function gExp(id) {
-    if (!(id in r)) return;
-    const m = r[id];
+    if (!r.has(id)) return;
+    const m = r.get(id);
     if (m.s) {
       const { d, e, s } = m;
       delete m.s;
@@ -87,9 +93,16 @@ let System, __instantiate;
     }
     return m.exp;
   }
-  __instantiate = (m, a) => {
-    System = __instantiate = undefined;
+
+  __instantiateAsync = async (m) => {
+    System = __instantiateAsync = __instantiate = undefined;
+    rF(m);
+    return gExpA(m);
+  };
+
+  __instantiate = (m) => {
+    System = __instantiateAsync = __instantiate = undefined;
     rF(m);
-    return a ? gExpA(m) : gExp(m);
+    return gExp(m);
   };
 })();
-- 
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