fix environmental differences node10,12/4,5

Author: tjmehta

find-key.js

@@ -2,6 +2,13 @@
  * @module object-loops/find-key
  */
 
+var isInteger = require('101/is-integer')
+
+var castArrayKey = function (key) {
+  var num = parseInt(key, 10)
+  return isNaN(num) ? key : num
+}
+
 /**
  * Find the key of the the object that passes the test implemented by the callback.
  * @function module:object-loops/find-key
@@ -13,9 +20,12 @@
 module.exports = findKey
 
 function findKey (obj, callback, thisArg) {
-  if (Array.isArray(obj) && obj.findIndex) {
+  var isArray = Array.isArray(obj)
+  if (isArray && obj.findIndex) {
+    /* $lab:coverage:off$ */ // not covered in envs that don't have `findIndex`
     var index = obj.findIndex(callback, thisArg)
     return ~index ? index : undefined
+    /* $lab:coverage:on$ */
   }
   if (typeof obj !== 'object' && typeof obj !== 'function') {
     throw new TypeError(obj + ' must be an object')
@@ -26,6 +36,10 @@ function findKey (obj, callback, thisArg) {
   var ret
   var keys = Object.keys(obj)
 
+  if (isArray) {
+    keys = Object.keys(obj).map(castArrayKey).filter(isInteger)
+  }
+
   for (var i = 0; i < keys.length; i++) {
     var key = keys[i]
     var val = obj[key]

test/test-find-key.js

@@ -91,6 +91,21 @@ describe('findKey', function () {
       expect(ret).to.equal(1)
       done()
     })
+    it('should break loop if item is found (weird array)', function (done) {
+      var obj = [
+        'foo',
+        'bar',
+        'baz'
+      ]
+      obj['wut'] = 'hello'
+      var callback = sinon.spy(equals('hello'))
+      var thisArg = {}
+      var ret = findKey(obj, callback, thisArg)
+      // assertions
+      expect(callback.callCount).to.equal(3)
+      expect(ret).to.equal(undefined)
+      done()
+    })
     describe('errors', function () {
       it('should throw an error if obj must be an object', function (done) {
         var obj = 'notObject'
@@ -113,25 +128,53 @@ describe('findKey', function () {
         done()
       })
     })
-    describe('use w/ array', function () {
-      beforeEach(function (done) {
-        sinon.spy(Array.prototype, 'findIndex')
-        done()
-      })
-      afterEach(function (done) {
-        Array.prototype.findIndex.restore()
-        done()
+    if (Array.prototype.findIndex) {
+      describe('use w/ array', function () {
+        beforeEach(function (done) {
+          sinon.spy(Array.prototype, 'findIndex')
+          done()
+        })
+        afterEach(function (done) {
+          Array.prototype.findIndex.restore()
+          done()
+        })
+        it('should use array findIndex', function (done) {
+          var arr = [1, 2, 3]
+          var callback = noop
+          var index = arr.findIndex(callback, arr)
+          expect(findKey(arr, callback))
+            .to.equal(~index ? index : undefined)
+          sinon.assert.calledOn(Array.prototype.findIndex, arr)
+          sinon.assert.calledWith(Array.prototype.findIndex, callback)
+          done()
+        })
       })
-      it('should use array findIndex', function (done) {
-        var arr = [1, 2, 3]
-        var callback = noop
-        var index = arr.findIndex(callback, arr)
-        expect(findKey(arr, callback))
-          .to.equal(~index ? index : undefined)
-        sinon.assert.calledOn(Array.prototype.findIndex, arr)
-        sinon.assert.calledWith(Array.prototype.findIndex, callback)
-        done()
+      describe('use w/ array', function () {
+        var findIndex = Array.prototype.findIndex
+        beforeEach(function (done) {
+          delete Array.prototype.findIndex
+          done()
+        })
+        afterEach(function (done) {
+          Array.prototype.findIndex = findIndex // eslint-disable-line no-extend-native
+          done()
+        })
+        it('should break loop if item is found (weird array)', function (done) {
+          var obj = [
+            'foo',
+            'bar',
+            'baz'
+          ]
+          obj['wut'] = 'hello'
+          var callback = sinon.spy(equals('hello'))
+          var thisArg = {}
+          var ret = findKey(obj, callback, thisArg)
+          // assertions
+          expect(callback.callCount).to.equal(3)
+          expect(ret).to.equal(undefined)
+          done()
+        })
       })
-    })
+    }
   })
 })

test/test-find.js

@@ -113,24 +113,26 @@ describe('find', function () {
         done()
       })
     })
-    describe('use w/ array', function () {
-      beforeEach(function (done) {
-        sinon.spy(Array.prototype, 'findIndex')
-        done()
-      })
-      afterEach(function (done) {
-        Array.prototype.findIndex.restore()
-        done()
+    if (Array.prototype.findIndex) {
+      describe('use w/ array', function () {
+        beforeEach(function (done) {
+          sinon.spy(Array.prototype, 'findIndex')
+          done()
+        })
+        afterEach(function (done) {
+          Array.prototype.findIndex.restore()
+          done()
+        })
+        it('should use array findIndex', function (done) {
+          var arr = [1, 2, 3]
+          var callback = noop
+          expect(find(arr, callback))
+            .to.equal(arr.find(callback, arr))
+          sinon.assert.calledOn(Array.prototype.findIndex, arr)
+          sinon.assert.calledWith(Array.prototype.findIndex, callback)
+          done()
+        })
       })
-      it('should use array findIndex', function (done) {
-        var arr = [1, 2, 3]
-        var callback = noop
-        expect(find(arr, callback))
-          .to.equal(arr.find(callback, arr))
-        sinon.assert.calledOn(Array.prototype.findIndex, arr)
-        sinon.assert.calledWith(Array.prototype.findIndex, callback)
-        done()
-      })
-    })
+    }
   })
 })