purify-ts-io/dist/index.js

IO monad compatible with purify-ts

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
class IO {
    constructor(effect) {
        this.effect = effect;
    }
    // Run the deferred effect
    run() {
        return this.effect();
    }
    // Functor map: applies a function to the result of the IO effect
    map(fn) {
        return new IO(() => fn(this.run()));
    }
    // Apply (ap): applies a function within an IO context to another IO value
    ap(fab) {
        return fab.chain(fn => this.map(fn));
    }
    // Chain (flatMap): applies a function that returns an IO, creating a new IO
    chain(fn) {
        return new IO(() => fn(this.run()).run());
    }
    // Lift a pure value into an IO context
    static of(a) {
        return new IO(() => a);
    }
    // Lift a function into an IO effect
    static from(fn) {
        return new IO(fn);
    }
}
exports.default = IO;
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