Support node.js inspect natively

README.md

@@ -12,6 +12,7 @@
 * Compatible with node.js and browsers
 * Works with `instanceof`
 * Output full stack trace with `fullStack(err)`
+* Automatic full stack traces with node.js (via [`inspect()`](https://nodejs.org/api/util.html#util_util_inspect_object_options))
 * Extends [`make-error`](https://github.com/JsCommunity/make-error)
 
 ## Installation
@@ -36,6 +37,8 @@ const customError = new CustomError('Another boom!', error)
 
 console.log(fullStack(error)) // Works with any error.
 console.log(fullStack(customError)) // Extended stack trace contains error causes.
+
+console.log(customError instanceof Error) //=> true
 ```
 
 ## Attribution

src/index.spec.ts

@@ -1,4 +1,5 @@
 import test = require('blue-tape')
+import { inspect } from 'util'
 import { BaseError, fullStack } from './index'
 
 const SEP_TEXT = '\n\nDuring the above error, another error occurred:\n\n'
@@ -17,12 +18,14 @@ test('make error cause', t => {
 
     t.equal(testError.cause, cause)
     t.equal(fullStack(testError), `${cause.stack}${SEP_TEXT}${testError.stack}`)
+    t.equal(inspect(testError), fullStack(testError))
     t.ok(testError instanceof Error)
     t.ok(testError instanceof BaseError)
     t.ok(testError instanceof TestError)
 
     t.equal(subTestError.cause, testError)
     t.equal(fullStack(subTestError), `${cause.stack}${SEP_TEXT}${testError.stack}${SEP_TEXT}${subTestError.stack}`)
+    t.equal(inspect(subTestError), fullStack(subTestError))
     t.ok(subTestError instanceof Error)
     t.ok(subTestError instanceof BaseError)
     t.ok(subTestError instanceof TestError)

src/index.ts

@@ -6,6 +6,10 @@ export class BaseError extends makeError.BaseError {
     super(message)
   }
 
+  inspect () {
+    return fullStack(this)
+  }
+
 }
 
 export function fullStack (error: Error | BaseError) {