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# get-caller-file | |
[](https://travis-ci.org/stefanpenner/get-caller-file) | |
[](https://ci.appveyor.com/project/embercli/get-caller-file/branch/master) | |
This is a utility, which allows a function to figure out from which file it was invoked. It does so by inspecting v8's stack trace at the time it is invoked. | |
Inspired by http://stackoverflow.com/questions/13227489 | |
*note: this relies on Node/V8 specific APIs, as such other runtimes may not work* | |
## Installation | |
```bash | |
yarn add get-caller-file | |
``` | |
## Usage | |
Given: | |
```js | |
// ./foo.js | |
const getCallerFile = require('get-caller-file'); | |
module.exports = function() { | |
return getCallerFile(); // figures out who called it | |
}; | |
``` | |
```js | |
// index.js | |
const foo = require('./foo'); | |
foo() // => /full/path/to/this/file/index.js | |
``` | |
## Options: | |
* `getCallerFile(position = 2)`: where position is stack frame whos fileName we want. | |