fp-ts-std/dist/cjs/Isomorphism.js

The missing pseudo-standard library for fp-ts.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.compose = exports.deriveMonoid = exports.deriveSemigroup = exports.reverse = exports.fromIso = exports.toIso = void 0;
const function_1 = require("fp-ts/function");
const getIsoIso = () => ({
    to: I => ({ get: I.to, reverseGet: I.from }),
    from: I => ({ to: I.get, from: I.reverseGet }),
});
const toIso = (I) => getIsoIso().to(I);
exports.toIso = toIso;
const fromIso = (I) => getIsoIso().from(I);
exports.fromIso = fromIso;
const reverse = (I) => ({
    to: I.from,
    from: I.to,
});
exports.reverse = reverse;
const deriveSemigroup = (I) => (S) => ({
    concat: (x, y) => I.to(S.concat(I.from(x), I.from(y))),
});
exports.deriveSemigroup = deriveSemigroup;
const deriveMonoid = (I) => (M) => ({
    empty: I.to(M.empty),
    concat: (x, y) => I.to(M.concat(I.from(x), I.from(y))),
});
exports.deriveMonoid = deriveMonoid;
const compose = (F) => (G) => ({
    to: (0, function_1.flow)(F.to, G.to),
    from: (0, function_1.flow)(G.from, F.from),
});
exports.compose = compose;