lib: implement fetch's Headers class
Refs: https://github.com/nodejs/node/issues/19393
This is not ready yet, but I'm already opening the PR so people know I'm working on it and hopefully to get some help.
It aims to implement the Headers
class, required for the fetch
API, as defined in https://fetch.spec.whatwg.org/#headers-class
For those who want to help:
# build
./configure --node-builtin-modules-path $(pwd)
# run all WPT tests
./node test/wpt/test-fetch-headers.js
# run a specific test file
./node test/wpt/test-fetch-headers.js headers-record.any.js