Do not crash if unable to figure out location

lib/get-loc.js

@@ -2,31 +2,35 @@
 const path = require("path");
 
 function getLoc(depth) {
-  let stack, file, frame;
+  try {
+    let stack, file, frame;
 
-  const pst = Error.prepareStackTrace;
-  Error.prepareStackTrace = function (_, innerStack) {
-    Error.prepareStackTrace = pst;
-    return innerStack;
-  };
+    const pst = Error.prepareStackTrace;
+    Error.prepareStackTrace = function (_, innerStack) {
+      Error.prepareStackTrace = pst;
+      return innerStack;
+    };
 
-  stack = new Error().stack;
-  depth = !depth || isNaN(depth) ? 1 : depth > stack.length - 2 ? stack.length - 2 : depth;
-  stack = stack.slice(depth + 1);
+    stack = new Error().stack;
+    depth = !depth || isNaN(depth) ? 1 : depth > stack.length - 2 ? stack.length - 2 : depth;
+    stack = stack.slice(depth + 1);
 
-  do {
-    frame = stack.shift();
-    file = frame && frame.getFileName();
-  } while (stack.length && file === "module.js" || file.includes("node_modules"));
+    do {
+      frame = stack.shift();
+      file = frame && frame.getFileName();
+    } while (stack.length && file === "module.js" || file.includes("node_modules"));
 
-  let calleePath;
-  if (process.cwd()) {
-    calleePath = path.relative(process.cwd(), frame.getFileName());
-  } else {
-    calleePath = frame.getFileName();
-  }
+    let calleePath;
+    if (process.cwd()) {
+      calleePath = path.relative(process.cwd(), frame.getFileName());
+    } else {
+      calleePath = frame.getFileName();
+    }
 
-  return `${calleePath}:${frame.getLineNumber()}`;
+    return `${calleePath}:${frame.getLineNumber()}`;
+  } catch (e) {
+    return undefined;
+  }
 }
 
 module.exports = {

package.json

@@ -8,7 +8,7 @@
     "Markus Ekholm",
     "Jens Carlén"
   ],
-  "version": "2.1.2",
+  "version": "2.1.3",
   "scripts": {
     "test": "mocha --exit && eslint . --cache && depcheck --ignores=\"prettier\"",
     "posttest": "eslint --cache .",