errno - npm Package Compare versions

Comparing version 0.1.5 to 0.1.6

custom.js

@@ -18,3 +18,3 @@ var prr = require('prr')
   if (Error.captureStackTrace)
-    Error.captureStackTrace(this, arguments.callee)
+    Error.captureStackTrace(this, this.constructor)
   init.call(this, 'CustomError', message, cause)
@@ -41,3 +41,3 @@ }
     if (Error.captureStackTrace)
-      Error.captureStackTrace(this, arguments.callee)
+      Error.captureStackTrace(this, err)
   }
@@ -44,0 +44,0 @@ err.prototype = !!proto ? new proto() : new CustomError()

package.json

@@ -12,3 +12,3 @@ {
   ],
-  "version": "0.1.5",
+  "version": "0.1.6",
   "main": "errno.js",
@@ -22,2 +22,4 @@ "dependencies": {
   "devDependencies": {
+    "error-stack-parser": "^2.0.1",
+    "inherits": "^2.0.3",
     "tape": "~4.8.0"
@@ -31,4 +33,4 @@ },
   "scripts": {
-    "test": "tape test.js"
+    "test": "node --use_strict test.js"
   }
 }

test.js

@@ -1,6 +0,6 @@
-#!/usr/bin/env node
+var test             = require('tape')
+  , inherits         = require('inherits')
+  , ErrorStackParser = require('error-stack-parser')
+  , errno            = require('./')
 
-var test  = require('tape')
-  , errno = require('./')
-
 test('sanity checks', function (t) {
@@ -23,4 +23,4 @@ t.ok(errno.all, 'errno.all not found')
 test('custom errors', function (t) {
-  var Cust = errno.create('FooNotBarError')
-  var cust = new Cust('foo is not bar')
+  const Cust = errno.create('FooNotBarError')
+  const cust = new Cust('foo is not bar')
 
@@ -33,1 +33,43 @@ t.equal(cust.name, 'FooNotBarError', 'correct custom name')
 })
+
+test('callstack', function (t) {
+  const MyError = errno.create('MyError')
+
+  function lastFunction (ErrorType, cb) {
+    process.nextTick(cb, new ErrorType('oh noes!'))
+  }
+
+  function secondLastFunction (ErrorType, cb) {
+    lastFunction(ErrorType, cb)
+  }
+
+  function testFrames (t) {
+    return function (err) {
+      const stack = ErrorStackParser.parse(err)
+      t.same(stack[0].functionName, 'lastFunction', 'last stack frame ok')
+      t.same(stack[1].functionName, 'secondLastFunction', 'second last stack frame ok')
+      t.end()
+    }
+  }
+
+  t.test('custom error, default prototype', function (t) {
+    secondLastFunction(MyError, testFrames(t))
+  })
+
+  t.test('custom error, custom prototype', function (t) {
+    const MyError2 = errno.create('MyError2', MyError)
+    secondLastFunction(MyError2, testFrames(t))
+  })
+
+  t.test('custom error, using inheritance', function (t) {
+    const CustomError = errno.custom.CustomError
+
+    function MyError3 (message, cause) {
+      CustomError.call(this, message, cause)
+    }
+
+    inherits(MyError3, CustomError)
+
+    secondLastFunction(MyError3, testFrames(t))
+  })
+})

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Improved metrics

Total package byte prevSize

17596

increased by7.91%

Lines of code

464

increased by7.66%

Number of medium supply chain risk alerts

0

decreased by-100%

Worsened metrics

Dev dependency count

3

increased by200%

No dependency changes