refactor: replace lodash with own implementation when possible (#593)

package.json

@@ -86,7 +86,7 @@
     "chalk": "^3.0.0",
     "css.escape": "^1.5.1",
     "dom-accessibility-api": "^0.6.3",
-    "lodash": "^4.17.15",
+    "lodash": "^4.17.21",
     "redent": "^3.0.0"
   },
   "devDependencies": {

src/to-have-form-values.js

@@ -1,16 +1,15 @@
-import isEqualWith from 'lodash/isEqualWith.js'
-import uniq from 'lodash/uniq.js'
+import isEqualWith from 'lodash/isEqualWith'
 import escape from 'css.escape'
 import {
   checkHtmlElement,
-  compareArraysAsSet,
   getSingleElementValue,
+  compareArraysAsSet,
 } from './utils'
 
 // Returns the combined value of several elements that have the same name
 // e.g. radio buttons or groups of checkboxes
 function getMultiElementValue(elements) {
-  const types = uniq(elements.map(element => element.type))
+  const types = [...new Set(elements.map(element => element.type))]
   if (types.length !== 1) {
     throw new Error(
       'Multiple form elements with the same name must be of the same type',

src/to-have-value.js

@@ -1,9 +1,9 @@
-import isEqualWith from 'lodash/isEqualWith.js'
+import isEqualWith from 'lodash/isEqualWith'
 import {
   checkHtmlElement,
-  compareArraysAsSet,
   getMessage,
   getSingleElementValue,
+  compareArraysAsSet,
 } from './utils'
 
 export function toHaveValue(htmlElement, expectedValue) {

src/utils.js

@@ -1,5 +1,4 @@
 import redent from 'redent'
-import isEqual from 'lodash/isEqual.js'
 import {parse} from '@adobe/css-tools'
 
 class GenericTypeError extends Error {
@@ -212,13 +211,6 @@ function getSingleElementValue(element) {
   }
 }
 
-function compareArraysAsSet(a, b) {
-  if (Array.isArray(a) && Array.isArray(b)) {
-    return isEqual(new Set(a), new Set(b))
-  }
-  return undefined
-}
-
 function toSentence(
   array,
   {wordConnector = ', ', lastWordConnector = ' and '} = {},
@@ -228,6 +220,13 @@ function toSentence(
   )
 }
 
+function compareArraysAsSet(arr1, arr2) {
+  if (Array.isArray(arr1) && Array.isArray(arr2)) {
+    return [...new Set(arr1)].every(v => new Set(arr2).has(v))
+  }
+  return undefined
+}
+
 export {
   HtmlElementTypeError,
   NodeTypeError,
@@ -240,6 +239,6 @@ export {
   normalize,
   getTag,
   getSingleElementValue,
-  compareArraysAsSet,
   toSentence,
+  compareArraysAsSet,
 }