stack-trace

Get v8 stack traces as an array of CallSite objects.

Install

npm install stack-trace

Usage

var stackTrace = require('stack-trace');
var trace = stackTrace.get();

require('assert').strictEqual(trace[0].getFileName(), __filename);

API

stackTrace.get([belowFn])

Returns an array of CallSite objects, where element 0 is the current call site.

The belowFn parameter can be used to pass a function on the stack, the returned array will only include CallSites below this function.

CallSite

The official v8 CallSite object API can be found here. A quick excerpt:

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?

License

stack-trace is licensed under the MIT license.