From 83f53c6455bacbe62998ebc56199d0c2d7f1a870 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bartek=20Iwa=C5=84czuk?= <biwanczuk@gmail.com>
Date: Fri, 25 Sep 2020 14:04:51 +0200
Subject: refactor: remove tsc/40_error_stack.js (#7673)

This commit removes cli/tsc/40_error_stack.js as it is not
needed in TSC host. All errors originating in TSC are terminal
and don't require source mapping hence we can rely on default
stack traces provided by deno_core.

Additionally tsc/06_util.js was removed and its code moved
to tsc/99_main_compiler.js
---
 cli/tsc/99_main_compiler.js | 40 +++++++++++++++++++++++++++++++++++-----
 1 file changed, 35 insertions(+), 5 deletions(-)

(limited to 'cli/tsc/99_main_compiler.js')

diff --git a/cli/tsc/99_main_compiler.js b/cli/tsc/99_main_compiler.js
index 94a08e6ab..d06912b1f 100644
--- a/cli/tsc/99_main_compiler.js
+++ b/cli/tsc/99_main_compiler.js
@@ -18,11 +18,42 @@ delete Object.prototype.__proto__;
 
 ((window) => {
   const core = window.Deno.core;
-  const { assert, log, notImplemented } = window.__bootstrap.util;
-  const util = window.__bootstrap.util;
-  const errorStack = window.__bootstrap.errorStack;
   const errors = window.__bootstrap.errors.errors;
 
+  let logDebug = false;
+  let logSource = "JS";
+
+  function setLogDebug(debug, source) {
+    logDebug = debug;
+    if (source) {
+      logSource = source;
+    }
+  }
+
+  function log(...args) {
+    if (logDebug) {
+      const stringifiedArgs = args.map(JSON.stringify).join(" ");
+      core.print(`DEBUG ${logSource} - ${stringifiedArgs}\n`);
+    }
+  }
+
+  class AssertionError extends Error {
+    constructor(msg) {
+      super(msg);
+      this.name = "AssertionError";
+    }
+  }
+
+  function assert(cond, msg = "Assertion failed.") {
+    if (!cond) {
+      throw new AssertionError(msg);
+    }
+  }
+
+  function notImplemented() {
+    throw new Error("not implemented");
+  }
+
   /**
    * @param {import("../dts/typescript").DiagnosticRelatedInformation} diagnostic
    */
@@ -1303,8 +1334,7 @@ delete Object.prototype.__proto__;
     // are ready. The response should be a `StartRes` message containing the CLI
     // args and other info.
     const s = core.jsonOpSync("op_start");
-    util.setLogDebug(s.debugFlag, source);
-    errorStack.setPrepareStackTrace(Error);
+    setLogDebug(s.debugFlag, source);
     return s;
   }
 
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