diff --git a/spec/stackframe-spec.js b/spec/stackframe-spec.js
index feb1da3..3b04c25 100644
--- a/spec/stackframe-spec.js
+++ b/spec/stackframe-spec.js
@@ -8,6 +8,40 @@ describe('StackFrame', function() {
             }).not.toThrow();
         });
 
+        it('should set properties from given object', function() {
+            var stackFrame = new StackFrame({
+                args: ['ARG1', null],
+                columnNumber: 2,
+                functionName: 'FUNCTION_NAME',
+                fileName: 'FILE_NAME',
+                isConstructor: false,
+                isEval: false,
+                isNative: false,
+                isTopLevel: true,
+                lineNumber: 1,
+                source: 'SOURCE'
+            });
+            expect(stackFrame.args).toEqual(['ARG1', null]);
+            expect(stackFrame.columnNumber).toBe(2);
+            expect(stackFrame.fileName).toBe('FILE_NAME');
+            expect(stackFrame.functionName).toBe('FUNCTION_NAME');
+            expect(stackFrame.isConstructor).toBeFalsy();
+            expect(stackFrame.isEval).toBeFalsy();
+            expect(stackFrame.isNative).toBeFalsy();
+            expect(stackFrame.isTopLevel).toBeFalsy();
+            expect(stackFrame.lineNumber).toBe(1);
+            expect(stackFrame.source).toBe('SOURCE');
+        });
+
+        it('allows construction with v0.x arguments in non-strict mode', function() {
+            var stackFrame = new StackFrame('FUNCTION_NAME', [], 'FILE_NAME', 1, 2);
+            expect(stackFrame.args).toEqual(['ARG1', null]);
+            expect(stackFrame.columnNumber).toBe(2);
+            expect(stackFrame.fileName).toBe('FILE_NAME');
+            expect(stackFrame.functionName).toBe('FUNCTION_NAME');
+            expect(stackFrame.lineNumber).toBe(1);
+        });
+
         it('throws an error given an illogical line number', function() {
             var fn = function() {
                 new StackFrame({lineNumber: 'BOGUS'});
diff --git a/stackframe.js b/stackframe.js
index 1d8d609..59a6054 100644
--- a/stackframe.js
+++ b/stackframe.js
@@ -11,7 +11,6 @@
         root.StackFrame = factory();
     }
 }(this, function() {
-    'use strict';
     function _isNumber(n) {
         return !isNaN(parseFloat(n)) && isFinite(n);
     }
@@ -20,6 +19,11 @@
         return str[0].toUpperCase() + str.substring(1);
     }
 
+    function _inStrictMode() {
+        // TODO: implementation
+        return true;
+    }
+
     function _getter(p) {
         return function() {
             return this[p];
@@ -40,6 +44,17 @@
                     this['set' + _capitalize(props[i])](obj[props[i]]);
                 }
             }
+        } else if (!_inStrictMode()) {
+            if (console && typeof console.warn === 'function') {
+                console.warn('Constructing StackFrame with an Array is deprecated. ' +
+                    'Please use an Object as described in https://edub.me/stackframe-v1');
+            }
+            var args = Array.prototype.slice.call(arguments);
+            this.setFunctionName(args[0]);
+            this.setArgs(args[1]);
+            this.setFileName(args[2]);
+            this.setLineNumber(args[3]);
+            this.setColumnNumber(args[4]);
         }
     }