Revert "Deno.bundle supports targets < ES2017. (#6328)" (#6342)

This reverts commit 75bb9dbdfc7f8b4e8d17978808ae575e61843aef.

1 files changed, 7 insertions, 27 deletions

diff --git a/cli/js/compiler.ts b/cli/js/compiler.ts
index 46dbfcaf9..abe145da2 100644
--- a/cli/js/compiler.ts
+++ b/cli/js/compiler.ts
@@ -307,10 +307,6 @@ class Host implements ts.CompilerHost {
     }
   }
 
-  get options(): ts.CompilerOptions {
-    return this.#options;
-  }
-
   configure(
     cwd: string,
     path: string,
@@ -532,7 +528,6 @@ const _TS_SNAPSHOT_PROGRAM = ts.createProgram({
 
 // This function is called only during snapshotting process
 const SYSTEM_LOADER = getAsset("system_loader.js");
-const SYSTEM_LOADER_ES5 = getAsset("system_loader_es5.js");
 
 function buildLocalSourceFileCache(
   sourceFileMap: Record<string, SourceFileMapEntry>
@@ -688,12 +683,7 @@ function createBundleWriteFile(state: WriteFileState): WriteFileCallback {
     assert(state.bundle);
     // we only support single root names for bundles
     assert(state.rootNames.length === 1);
-    state.bundleOutput = buildBundle(
-      state.rootNames[0],
-      data,
-      sourceFiles,
-      state.host.options.target ?? ts.ScriptTarget.ESNext
-    );
+    state.bundleOutput = buildBundle(state.rootNames[0], data, sourceFiles);
   };
 }
 
@@ -959,8 +949,7 @@ function normalizeUrl(rootName: string): string {
 function buildBundle(
   rootName: string,
   data: string,
-  sourceFiles: readonly ts.SourceFile[],
-  target: ts.ScriptTarget
+  sourceFiles: readonly ts.SourceFile[]
 ): string {
   // when outputting to AMD and a single outfile, TypeScript makes up the module
   // specifiers which are used to define the modules, and doesn't expose them
@@ -978,8 +967,8 @@ function buildBundle(
   let instantiate: string;
   if (rootExports && rootExports.length) {
     instantiate = hasTla
-      ? `const __exp = await __instantiate("${rootName}", true);\n`
-      : `const __exp = __instantiate("${rootName}", false);\n`;
+      ? `const __exp = await __instantiateAsync("${rootName}");\n`
+      : `const __exp = __instantiate("${rootName}");\n`;
     for (const rootExport of rootExports) {
       if (rootExport === "default") {
         instantiate += `export default __exp["${rootExport}"];\n`;
@@ -989,19 +978,10 @@ function buildBundle(
     }
   } else {
     instantiate = hasTla
-      ? `await __instantiate("${rootName}", true);\n`
-      : `__instantiate("${rootName}", false);\n`;
+      ? `await __instantiateAsync("${rootName}");\n`
+      : `__instantiate("${rootName}");\n`;
   }
-  const es5Bundle =
-    target === ts.ScriptTarget.ES3 ||
-    target === ts.ScriptTarget.ES5 ||
-    target === ts.ScriptTarget.ES2015 ||
-    target === ts.ScriptTarget.ES2016
-      ? true
-      : false;
-  return `${
-    es5Bundle ? SYSTEM_LOADER_ES5 : SYSTEM_LOADER
-  }\n${data}\n${instantiate}`;
+  return `${SYSTEM_LOADER}\n${data}\n${instantiate}`;
 }
 
 function setRootExports(program: ts.Program, rootModule: string): void {