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node_modules/@sideway/pinpoint/lib/index.d.ts

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+/**
+Returns the filename and line number of the caller in the call stack
+
+@param depth - The distance from the location function in the call stack. Defaults to 1 (caller).
+
+@return an object with the filename and line number.
+*/
+export function location(depth?: number): location.Location;
+
+declare namespace location {
+
+    interface Location {
+
+        /**
+        The fully qualified filename.
+        */
+        readonly filename: string;
+
+        /**
+        The file line number.
+        */
+        readonly line: number;
+    }
+}

node_modules/@sideway/pinpoint/lib/index.js

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+'use strict';
+
+const internals = {};
+
+
+exports.location = function (depth = 0) {
+
+    const orig = Error.prepareStackTrace;
+    Error.prepareStackTrace = (ignore, stack) => stack;
+
+    const capture = {};
+    Error.captureStackTrace(capture, this);
+    const line = capture.stack[depth + 1];
+
+    Error.prepareStackTrace = orig;
+
+    return {
+        filename: line.getFileName(),
+        line: line.getLineNumber()
+    };
+};