Methods to Create new map

call Map() to create new empty map

const emptyMap = new Map();

call Map() with Array of [arrays with key-value pairs]

const map = new Map([
  [1, "one"],
  [2, "two"],
  [3, "three"]
])

call Map() & chain Set() to add entries

const map = new Map()
  .set(1, "one")
  .set(2, "two")
  .set(3, "three")

References