1 files changed, 39 insertions, 0 deletions
diff --git a/ext/node/polyfills/upstream_modules.ts b/ext/node/polyfills/upstream_modules.ts
new file mode 100644
index 000000000..ed8d6faa0
--- /dev/null
+++ b/ext/node/polyfills/upstream_modules.ts
@@ -0,0 +1,39 @@
+// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
+// Upstream modules
+const callerPath = `const callerCallsite = require("caller-callsite");
+const re = /^file:/;
+
+module.exports = () => {
+  const fileUrl = callerCallsite().getFileName();
+  return fileUrl.replace(re, "");
+};
+`;
+
+// From: https://github.com/stefanpenner/get-caller-file/blob/2383bf9e98ed3c568ff69d7586cf59c0f1dcb9d3/index.ts
+const getCallerFile = `
+const re = /^file:\\/\\//;
+
+module.exports = function getCallerFile(position = 2) {
+  if (position >= Error.stackTraceLimit) {
+    throw new TypeError('getCallerFile(position) requires position be less then Error.stackTraceLimit but position was: "' + position + '" and Error.stackTraceLimit was: "' + Error.stackTraceLimit + '"');
+  }
+
+  const oldPrepareStackTrace = Error.prepareStackTrace;
+  Error.prepareStackTrace = (_, stack)  => stack;
+  const stack = new Error().stack;
+  Error.prepareStackTrace = oldPrepareStackTrace;
+
+
+  if (stack !== null && typeof stack === 'object') {
+    // stack[0] holds this file
+    // stack[1] holds where this function was called
+    // stack[2] holds the file we're interested in
+    return stack[position] ? stack[position].getFileName().replace(re, "") : undefined;
+  }
+};
+`;
+
+export default {
+  "caller-path": callerPath,
+  "get-caller-file": getCallerFile,
+} as Record<string, string>;