Syntax Checker & Code Validator
About Object → Map Converter
The JavaScript Object to Map & Map to Object Generator converts between JavaScript plain objects (`{key: value}`), ES6 `new Map()` declarations, and 2D `[key, value]` entries arrays with TypeScript type inference.
How to Use Object → Map Converter
Step 1
Paste a JavaScript object or ES6 Map declaration.
Step 2
Select conversion target format (ES6 Map, Entries Array, or Plain Object).
Step 3
Review generated JavaScript/TypeScript code.
Step 4
Click "Copy Code".
Practical Use Cases for Object → Map Converter
Migrating Plain Objects to ES6 Map Collections
Convert dictionary objects into ES6 `Map` instances to benefit from non-string keys, predictable insertion order iteration, and `map.size` tracking.
Serializing ES6 Maps to JSON
Convert `Map` instances into standard plain objects (`Object.fromEntries(map)`) for JSON API serialization.
Input & Output Examples
Converting Object to ES6 Map Constructor
`{ "a": 1, "b": 2 }``const myMap = new Map([\n ["a", 1],\n ["b", 2]\n]);`
Key Features & Performance
- ✓Converts Object $\\rightarrow$ `new Map([[k, v]])`, `Object.entries()`, or `new Map(Object.entries(obj))`.
- ✓Converts Map syntax $\\rightarrow$ Plain JSON Object (`Object.fromEntries()`).
- ✓Generates TypeScript generic types (`Map<string, number>`).
- ✓100% Client-Side memory execution.
- ✓1-Click Copy code snippet.
Key Terminology & Definitions
ES6 `Map` Collection
A built-in JavaScript keyed collection where keys can be of any type (objects, functions, primitives) and elements are iterated in insertion order.
`Object.fromEntries()`
A standard JavaScript method that transforms a list of key-value pairs into a plain object.