feature setimmutable: MapSetImmutable

const map = require('setimmutable/map') let i = {}

// Syntax 2 const e = map(i, set=>{ set('a.b.c.d.e',1) set('a.b.c.c.e',2) set('f.b.c.c.e',3) })

e.a.b.c.c.e

// Syntax 1 const a = map(i, [ ['a.b.c.d.e',1], ['a.b.c.c.e',2], ['f.b.c.c.e',3], ])

a.f.b.c.c.e