| # stackback | |
| Returns an array of CallSite objects for a captured stacktrace. Useful if you want to access the frame for an error object. | |
| ## use | |
| ```javascript | |
| var stackback = require('stackback'); | |
| // error generated from somewhere | |
| var err = new Error('some sample error'); | |
| // stack is an array of CallSite objects | |
| var stack = stackback(err); | |
| ``` | |
| ## CallSite object | |
| From the [V8 StackTrace API](https://code.google.com/p/v8/wiki/JavaScriptStackTraceApi) | |
| The structured stack trace is an Array of CallSite objects, each of which represents a stack frame. A CallSite object defines the following methods | |
| getThis: returns the value of this | |
| getTypeName: returns the type of this as a string. This is the name of the function stored in the constructor field of this, if available, otherwise the object's [[Class]] internal property. | |
| getFunction: returns the current function | |
| getFunctionName: returns the name of the current function, typically its name property. If a name property is not available an attempt will be made to try to infer a name from the function's context. | |
| getMethodName: returns the name of the property of this or one of its prototypes that holds the current function | |
| getFileName: if this function was defined in a script returns the name of the script | |
| getLineNumber: if this function was defined in a script returns the current line number | |
| getColumnNumber: if this function was defined in a script returns the current column number | |
| getEvalOrigin: if this function was created using a call to eval returns a CallSite object representing the location where eval was called | |
| isToplevel: is this a toplevel invocation, that is, is this the global object? | |
| isEval: does this call take place in code defined by a call to eval? | |
| isNative: is this call in native V8 code? | |
| isConstructor: is this a constructor call? | |
| ## install | |
| ```shell | |
| npm install stackback | |
| ``` | |