v1.0.0

.gitignore

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+node_modules

.travis.yml

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+language: node_js
+node_js:
+  - "7"

index.js

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+module.exports = class Query {
+  constructor (data) {
+    this.data = data.map(item => {
+      item.sortScore = 0;
+      return item;
+    });
+  };
+
+  get results () {
+    return this.data;
+  };
+
+  search (key, term, score = 0) {
+    switch (typeof term) {
+      case 'boolean':
+        this.data = this.data.filter(item => item[key] === term);
+        break;
+      case 'string':
+        if (term.length >= 3) {
+          this.data = this.data.filter(item => {
+            let regFind = new RegExp(term, 'gi');
+            let termMatches = (item[key].match(regFind) || []).length;
+            item.sortScore += termMatches;
+            return termMatches;
+          });
+        }
+        break;
+    }
+    return this;
+  };
+
+  sort (key = 'sortScore') {
+    this.data = this.data.sort((a, b) => {
+      if (a[key] < b[key]) return -1;
+      if (a[key] > b[key]) return 1;
+      return 0;
+    });
+    return this;
+  };
+
+  paginate (page = 1, perPage = 10) {
+    let min = page * perPage - perPage;
+    let max = min + perPage;
+    this.data = this.data.slice(min, max);
+    return this;
+  };
+};

index.test.js

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+const Query = require('./index');
+const TestData = require('./testdata.json');
+
+test('should not modify passed data without chain alterations', () => {
+  let query = new Query(TestData)
+  .results;
+
+  expect(query).toMatchObject(TestData);
+});
+
+test('should paginate with default params', () => {
+  let query = new Query(TestData)
+  .paginate()
+  .results;
+
+  expect(query.length).toBe(9);
+});
+
+test('should paginate with custom page length', () => {
+  let query = new Query(TestData)
+  .paginate(1, 3)
+  .results;
+
+  expect(query.length).toBe(3);
+  expect(query[0].name).toBe('Haynes Meadows')
+});
+
+test('should paginate to second page with custom page length', () => {
+  let query = new Query(TestData)
+  .paginate(2, 3)
+  .results;
+
+  expect(query.length).toBe(3);
+  expect(query[0].name).toBe('Howard Buckley')
+});
+
+test('should search by boolean isActive', () => {
+  let query = new Query(TestData)
+  .search('isActive', true)
+  .results;
+
+  expect(query.length).toBe(4);
+});
+
+test('should search by age', () => {
+  let query = new Query(TestData)
+  .search('name', 'steele')
+  .results;
+
+  expect(query.length).toBe(2);
+});
+
+test('should sort by boolean isActive', () => {
+  let query = new Query(TestData)
+  .sort('isActive')
+  .results;
+
+  expect(query[0].name).toBe('Katelyn Steele');
+});
+
+test('should sort by string name', () => {
+  let query = new Query(TestData)
+  .sort('name')
+  .results;
+
+  expect(query[0].name).toBe('Dudley Conner');
+});
+
+test('should chain everything together', () => {
+  let query = new Query(TestData)
+  .search('isActive', true)
+  .sort('name')
+  .paginate(1, 2)
+  .results;
+
+  expect(query.length).toBe(2);
+  expect(query[0].name).toBe('Dudley Conner');
+  expect(query[query.length - 1].name).toBe('Haynes Meadows');
+});

package.json

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+{
+  "name": "json-query-chain",
+  "version": "1.0.0",
+  "description": "Chain queries onto POJOs to return precise results.",
+  "main": "index.js",
+  "scripts": {
+    "test": "jest"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+ssh://git@github.com/sharpshark28/json-query-chain.git"
+  },
+  "author": "Joe Wroten <joe@wroten.me>",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/sharpshark28/json-query-chain/issues"
+  },
+  "homepage": "https://github.com/sharpshark28/json-query-chain#readme",
+  "devDependencies": {
+    "jest": "^20.0.4"
+  }
+}

testdata.json

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+[
+  {
+    "_id": "5928038b69b33613f3577487",
+    "isActive": true,
+    "age": 20,
+    "name": "Haynes Meadows",
+    "tags": [
+      "et",
+      "enim",
+      "cillum",
+      "minim",
+      "consequat",
+      "aliquip",
+      "voluptate"
+    ]
+  },
+  {
+    "_id": "5928038ba2400e7e09550991",
+    "isActive": false,
+    "age": 22,
+    "name": "Katelyn Steele",
+    "tags": [
+      "cupidatat",
+      "mollit",
+      "eiusmod",
+      "ex",
+      "officia",
+      "aliquip",
+      "ea"
+    ]
+  },
+  {
+    "_id": "5928038bff4df5c29016be22",
+    "isActive": false,
+    "age": 29,
+    "name": "Natalia Petty",
+    "tags": [
+      "nulla",
+      "dolor",
+      "anim",
+      "cupidatat",
+      "quis",
+      "magna",
+      "ea"
+    ]
+  },
+  {
+    "_id": "5928038b496f64e646cb8d69",
+    "isActive": false,
+    "age": 34,
+    "name": "Howard Buckley",
+    "tags": [
+      "qui",
+      "ullamco",
+      "occaecat",
+      "et",
+      "voluptate",
+      "tempor",
+      "culpa"
+    ]
+  },
+  {
+    "_id": "5928038b4d214186ba1e7fa2",
+    "isActive": false,
+    "age": 22,
+    "name": "Jenkins Mosley",
+    "tags": [
+      "adipisicing",
+      "sunt",
+      "officia",
+      "deserunt",
+      "quis",
+      "nulla",
+      "est"
+    ]
+  },
+  {
+    "_id": "5928038b67ae9fd2f9ba536b",
+    "isActive": true,
+    "age": 33,
+    "name": "Keith Short",
+    "tags": [
+      "deserunt",
+      "cupidatat",
+      "nostrud",
+      "nostrud",
+      "magna",
+      "ex",
+      "deserunt"
+    ]
+  },
+  {
+    "_id": "5928038b6b878f937b544826",
+    "isActive": false,
+    "age": 33,
+    "name": "Wade Steele",
+    "tags": [
+      "mollit",
+      "dolore",
+      "fugiat",
+      "magna",
+      "fugiat",
+      "officia",
+      "aute"
+    ]
+  },
+  {
+    "_id": "5928038b605e95ea58efa47a",
+    "isActive": true,
+    "age": 33,
+    "name": "Dudley Conner",
+    "tags": [
+      "aliquip",
+      "aliquip",
+      "reprehenderit",
+      "nostrud",
+      "irure",
+      "sint",
+      "laborum"
+    ]
+  },
+  {
+    "_id": "5928038bfece811301f276c7",
+    "isActive": true,
+    "age": 33,
+    "name": "Newman Mays",
+    "tags": [
+      "et",
+      "amet",
+      "dolore",
+      "ipsum",
+      "ea",
+      "ea",
+      "enim"
+    ]
+  }
+]