Merge pull request #1 from explore-node-js/master

sync. with main repository

Author: eugene-matvejev

.gitignore

@@ -1,37 +1,7 @@
-# Logs
-logs
-*.log
-npm-debug.log*
-
-# Runtime data
-pids
-*.pid
-*.seed
-
-# Directory for instrumented libs generated by jscoverage/JSCover
-lib-cov
-
-# Coverage directory used by tools like istanbul
-coverage
-
-# nyc test coverage
-.nyc_output
-
-# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
-.grunt
-
-# node-waf configuration
-.lock-wscript
-
-# Compiled binary addons (http://nodejs.org/api/addons.html)
-build/Release
-
 # Dependency directories
 node_modules
 jspm_packages
 
-# Optional npm cache directory
 .npm
 
-# Optional REPL history
-.node_repl_history
+coverage

README.md

@@ -1,2 +1,17 @@
 # node.js-object-field-resolver
 allows overwrite object fields with value
+
+
+how to use:
+
+```
+import overwriteObjectField from "node-object-field-resolver"
+
+...
+let object = {xxx: 'value'}
+
+object = overwriteObjectField('xxx.yyy', object, 'new value', '.');
+
+object // {xxx: { yyy: 'new value'} }
+
+```

circle.yml

@@ -0,0 +1,11 @@
+machine:
+    node:
+        version: 6.9
+
+dependencies:
+    cache_directories:
+        - ~/.npm/
+
+test:
+    override:
+        - npm test -- --coverage

package.json

@@ -0,0 +1,26 @@
+{
+    "name": "node-object-field-resolver",
+    "version": "0.1.0",
+    "description": "allows overwrite object fields with value",
+    "main": "./src/overwrite_object_field_value.js",
+    "repository": {
+        "type": "git",
+        "url": "git+https://github.com/explore-node-js/node.js-object-field-resolver.git"
+    },
+    "keywords": [
+        "object field resolver, overwrite object fields"
+    ],
+    "author": "Eugene Matvejev <eugene.matvejev@gmail.com>",
+    "license": "MIT",
+    "bugs": {
+        "url": "https://github.com/explore-node-js/node.js-object-field-resolver/issues"
+    },
+    "homepage": "https://github.com/explore-node-js/node.js-object-field-resolver#readme",
+    "dependencies": {},
+    "devDependencies": {
+        "jest": "^18.1.0"
+    },
+    "scripts": {
+        "test": "node node_modules/jest/bin/jest.js --verbose"
+    }
+}

src/overwrite_object_field_value.js

@@ -0,0 +1,27 @@
+"use strict";
+
+module.exports = function overwriteObjectFieldValue(abstractPath, value, object, delimiter) {
+    delimiter = undefined !== delimiter ? delimiter : '.';
+
+    const indexes = abstractPath.split(delimiter);
+    const lastPathIndex = indexes.length - 1;
+    let obj = object;
+
+    for (let i = 0; i <= lastPathIndex; i++) {
+        const index = indexes[i];
+
+        if (undefined === obj[index]) {
+            obj[index] = {};
+        }
+
+        if (i === lastPathIndex) {
+            obj[index] = value;
+
+            break;
+        }
+
+        obj = obj[index];
+    }
+
+    return object;
+};

tests/overwrite_object_field_value.test.js

@@ -0,0 +1,69 @@
+const overwriteObjectFieldValue = require("../src/overwrite_object_field_value");
+
+describe(`resolver: object field`, () => {
+    const dataProvider = [
+        {
+            absolutePath: 'node1',
+            value: {},
+            object: {},
+            expected: { node1: {} }
+        },
+        {
+            absolutePath: 'node1',
+            value: {},
+            object: { node1: ['test'] },
+            expected: { node1: {} }
+        },
+        {
+            absolutePath: 'node1',
+            value: {},
+            object: { node2: ['test'] },
+            expected: { node2: ['test'], node1: {} }
+        },
+        {
+            absolutePath: 'node1.node2',
+            value: { value: 'test' },
+            object: {},
+            expected: { node1: { node2: { value: 'test' } } }
+        },
+        {
+            absolutePath: 'node1.node2.node3',
+            value: ['test'],
+            object: {},
+            expected: { node1: { node2: { node3: ['test'] } } }
+        },
+        {
+            absolutePath: 'node1.node2.node3',
+            value: ['test'],
+            object: { node1: { node2: { node3: { node4: {} } } } },
+            expected: { node1: { node2: { node3: ['test'] } } }
+        },
+        {
+            absolutePath: 'node1.node2.node3.node4',
+            value: 'string',
+            object: { node4: { node2: { node3: { node4: '' } } } },
+            expected: { node4: { node2: { node3: { node4: '' } } }, node1: { node2: { node3: { node4: 'string' } } } }
+        }
+    ];
+    const execute = (el) => {
+        it(`::overwriteObjectFieldValue using: object - "${JSON.stringify(el.object)}" path - "${el.absolutePath}" delimiter - "${el.delimiter}"`, () => {
+            const object = overwriteObjectFieldValue(el.absolutePath, el.value, el.object, el.delimiter);
+
+            expect(JSON.stringify(object)).toMatch(JSON.stringify(el.expected));
+        });
+    };
+
+    dataProvider
+    /** tests where delimiter is undefined */
+        .forEach(el => execute(el));
+
+    dataProvider
+    /** tests where delimiter is defined */
+        .map(el => {
+            const delimiter = '/';
+            el.absolutePath = el.absolutePath.replace(/\./g, delimiter);
+            el.delimiter = delimiter;
+
+            return el;
+        }).forEach(el => execute(el));
+});