Added findOne method. Added tests for it. Readme badges added.

Author: viktor-maksimov

README.md

@@ -2,6 +2,16 @@
 
 Useful functions to help working with Javascript Array of Objects
 
+<br />
+
+<a href="https://www.npmjs.com/package/array-of-objects-functions">
+  <img src="https://user-images.githubusercontent.com/15264441/76154412-cfddb180-60d3-11ea-8c90-4c3c8f21f690.png" />
+</a>
+
+<a href="https://www.npmjs.com/package/array-of-objects-functions">
+  <img src="https://user-images.githubusercontent.com/15264441/76154414-d0764800-60d3-11ea-8e2e-ee42b5b56e69.png" />
+</a>
+
 ## Usage
 
 ### Install the package

src/array-of-objects.ts

@@ -3,11 +3,29 @@ export function getUniqueValues(arrayOfObjects: Record<string, any>[], propertyN
 
   arrayOfObjects.map(obj => {
     if (obj[propertyName] !== undefined) {
-      if (output.find(val => obj[propertyName] === val) === undefined) {
+      if (output.find(val => JSON.stringify(obj[propertyName]) === JSON.stringify(val)) === undefined) {
         output.push(obj[propertyName])
       }
     }
   })
 
   return output
 }
+
+export function findOne(
+  arrayOfObjects: Record<string, any>[],
+  propertyName: any,
+  propertyValue: any
+): Record<string, any> | null {
+  let output: Record<string, any> | null = null
+
+  arrayOfObjects.map(obj => {
+    if (obj[propertyName] !== undefined) {
+      if (JSON.stringify(obj[propertyName]) === JSON.stringify(propertyValue)) {
+        output = obj
+      }
+    }
+  })
+
+  return output
+}

tests/findOne.spec.ts

@@ -0,0 +1,103 @@
+import { findOne } from "../src/array-of-objects"
+
+const arrayOfObjects: Record<string, any>[] = [
+  {
+    id: 7,
+    data: {
+      title: "Test 1",
+      description: "Lorem ipsum 1"
+    }
+  },
+  {
+    id: 11
+  },
+  {
+    id: 15,
+    data: {}
+  },
+  {
+    id: 19,
+    data: {
+      title: "Test 2",
+      description: "Lorem ipsum 2"
+    }
+  }
+]
+
+describe("Find One - Get the only result", () => {
+  const result = findOne(arrayOfObjects, "data", {
+    title: "Test 1",
+    description: "Lorem ipsum 1"
+  })
+  const expectedResult = {
+    id: 7,
+    data: {
+      title: "Test 1",
+      description: "Lorem ipsum 1"
+    }
+  }
+  const notExpectedResult = null
+
+  it("Equal", () => {
+    expect(result).toEqual(expectedResult)
+  })
+  it("Not equal", () => {
+    expect(result).not.toEqual(notExpectedResult)
+  })
+})
+
+const arrayOfObjects2: Record<string, any>[] = [
+  {
+    id: 7,
+    data: {
+      title: "Test 1",
+      description: "Lorem ipsum 1"
+    }
+  },
+  {
+    id: 11
+  },
+  {
+    id: 15,
+    data: {}
+  },
+  {
+    id: 19,
+    data: {
+      title: "Test 1",
+      description: "Lorem ipsum 1"
+    }
+  }
+]
+
+describe("Find One - Get the last result", () => {
+  const result = findOne(arrayOfObjects2, "data", {
+    title: "Test 1",
+    description: "Lorem ipsum 1"
+  })
+  const expectedResult = {
+    id: 19,
+    data: {
+      title: "Test 1",
+      description: "Lorem ipsum 1"
+    }
+  }
+  const notExpectedResult = null
+  const notExpectedResult2 = {
+    id: 7,
+    data: {
+      title: "Test 1",
+      description: "Lorem ipsum 1"
+    }
+  }
+
+  it("Equal", () => {
+    expect(result).toEqual(expectedResult)
+  })
+  it("Not equal", () => {
+    expect(result).not.toEqual(notExpectedResult)
+  })
+  it("Not equal", () => {
+    expect(result).not.toEqual(notExpectedResult2)
+  })
+})