@ebflat9/fp - npm Package Compare versions

Comparing version 1.1.22 to 1.1.23

package.json

 {
   "name": "@ebflat9/fp",
-  "version": "1.1.22",
+  "version": "1.1.23",
   "description": "my fp utils",
@@ -5,0 +5,0 @@ "main": "index.js",

src/combinators.js

@@ -433,2 +433,23 @@ /**
 /**
+ * Merge
+ * @param {object} a - Object to merge into
+ * @param {object} b - Object with diffs to merge
+ * @return {object} c - Result of merge
+ */
+export function merge(a, b) {
+  if (!a && b) return b
+  if (isArray(b)) {
+    return b.map((value, i) => merge(a[i], value))
+  }
+  if (isObject(b)) {
+    const result = deepCopy(a)
+    for (const key of Reflect.ownKeys(b)) {
+      result[key] = merge(a[key], b[key])
+    }
+    return result
+  }
+  return b
+}
+
+/**
  * Stringifying functions
@@ -435,0 +456,0 @@ * Provides helper functions to stringify and parse JSON, along with numbers

test/combinators.js

@@ -702,2 +702,51 @@ import * as combinators from '../src/combinators.js'
   })
+
+  describe('merge', function () {
+    it('should merge arrays', function () {
+      const a = [1, 2, 3]
+      const b = [1, 2, 4]
+      assert.deepEqual(combinators.merge(a, b), [1, 2, 4])
+    })
+    it('should merge objects', function () {
+      const a = {
+        name: 'jim',
+        age: 15,
+        address: {
+          city: 'Hellosville',
+        },
+      }
+      const b = {
+        name: 'john',
+        likes: ['cats', 'birds'],
+        address: {
+          street: '123 Fake st',
+        },
+      }
+      assert.deepEqual(combinators.merge(a, b), {
+        name: 'john',
+        age: 15,
+        likes: ['cats', 'birds'],
+        address: {
+          city: 'Hellosville',
+          street: '123 Fake st',
+        },
+      })
+    })
+  })
+
+  describe('merge and diff', function () {
+    it('should diff and merge resulting in deepEqual objects', function () {
+      const a = {
+        name: 'Jim',
+        catName: 'Steve Lu-cat-ther',
+      }
+      const b = {
+        name: 'Jim',
+        age: 16,
+        catName: 'Steve Lu-cat-ther',
+      }
+      assert.deepEqual(combinators.diff(a, b), { age: 16 })
+      assert.deepEqual(combinators.merge(b, combinators.diff(a, b)), b)
+    })
+  })
 })

No alert changes

Improved metrics

Total package byte prevSize

238208

increased by0.7%

Lines of code

7659

increased by0.88%

No dependency changes