1 files changed, 23 insertions, 0 deletions
diff --git a/runtime/rt/40_error_stack.js b/runtime/rt/40_error_stack.js
new file mode 100644
index 000000000..da2ee51f3
--- /dev/null
+++ b/runtime/rt/40_error_stack.js
@@ -0,0 +1,23 @@
+// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
+
+((window) => {
+  const core = window.Deno.core;
+
+  function opFormatDiagnostics(diagnostics) {
+    return core.jsonOpSync("op_format_diagnostic", diagnostics);
+  }
+
+  function opApplySourceMap(location) {
+    const res = core.jsonOpSync("op_apply_source_map", location);
+    return {
+      fileName: res.fileName,
+      lineNumber: res.lineNumber,
+      columnNumber: res.columnNumber,
+    };
+  }
+
+  window.__bootstrap.errorStack = {
+    opApplySourceMap,
+    opFormatDiagnostics,
+  };
+})(this);