hasValue

Checks if map has a value. 🏃 📼 📦 🌔 📒

Alternatives: has, hasValue, hasEntry, hasSubset.
Similar: value, values, hasValue.

entries.hasValue(x, v, [fc], [fm]);
// x:  a map
// v:  value?
// fc: compare function (a, b)
// fm: map function (v, k, x)

const entries = require('extra-entries');

var x = [['a', 1], ['b', 2], ['c', -3]];
entries.isValue(x, 3);
// false

entries.isValue(x, 3, (a, b) => Math.abs(a) - Math.abs(b));
// true

entries.isValue(x, 3, null, v => Math.abs(v));
// true

references

• Array.prototype.includes: MDN web docs
• array-tools.contains: @75lb