The concept of nothing in JavaScript (Crockford's idea of a better undefined)

nothing.js

const nothing = new Proxy(Object.freeze(Object.create(null)), Object.create(null, {
    get: { value(target, property) {
        return property === Symbol.toPrimitive ? () => null : nothing }
    }
}))

nothing.foo === nothing          // true
nothing.foo.bar.baz[42].qux      // nothing forever

typeof nothing === "object"      // true
Reflect.getPrototypeOf(nothing)  // null

nothing.foo = 42                 // 42
nothing.foo                      // nothing

// coerced to the primitive value null (not ideal, but better than undefined)
nothing + true                   // 1
nothing + false                  // 0
nothing + 42                     // 42
"hello, " + nothing              // "hello, null"
nothing + {}                     // "null[object Object]"
nothing + []                     // "null"
nothing + 0n                     // TypeError: can't convert BigInt to number
nothing + Symbol()               // TypeError: can't convert symbol to number