The test262 directory contains a subset of the Test262 test suite. Specifically: it only contains tests for the built-in method Array.prototype.reduce.

The src directory contains a single JavaScript file. This file is used by the tests to define a custom implementation of Array.prototype.reduce.

Setup

1. If you do not have git and Node.js installed, install them before proceeding to step 2.

2. Clone this repository

3. Enter the newly created repository directory

4. Install the Node.js dependencies by running the following command in a terminal in the root of this project:

   npm install
   

Instruction

Edit the file src/reduce.js to define the method according to this specification document such that the tests pass. To run the tests, execute the following command from the root of this project:

npm test

Remember that writing specifications is hard work, and so is writing tests! Both the test files and the specification may be incorrect. To get the tests to pass, you may have to correct errors in the test logic, and your implementation may diverge from the specification. Be sure to have a justification for these corrections.