airgap-coin-lib/dist/actions/StateMachine.js

The airgap-coin-lib is a protocol agnostic library to prepare, sign and broadcast cryptocurrency transactions.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var StateMachine = /** @class */ (function () {
    function StateMachine(initialState, validTransitions) {
        this.state = initialState;
        this.validTransitions = validTransitions;
    }
    StateMachine.prototype.transitionTo = function (state) {
        if (this.canTransitionTo(state)) {
            this.state = state;
        }
        else {
            throw new Error("Invalid state transition: " + this.state + " -> " + state);
        }
    };
    StateMachine.prototype.getState = function () {
        return this.state;
    };
    StateMachine.prototype.addValidStateTransition = function (from, to) {
        var states = this.validTransitions.get(to);
        if (states !== undefined && states.indexOf(from) === -1) {
            states.push(from);
            this.validTransitions.set(to, states);
        }
        else {
            this.validTransitions.set(to, [from]);
        }
    };
    StateMachine.prototype.canTransitionTo = function (state) {
        var states = this.validTransitions.get(state);
        if (states !== undefined) {
            return states.indexOf(this.state) !== -1;
        }
        return false;
    };
    return StateMachine;
}());
exports.StateMachine = StateMachine;
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