pleshevskiy/it-fsm
1
0
Fork 0
Code Issues Pull requests Projects Releases1 Activity

chore: expose all types, utils and symbols

Browse source
This commit is contained in:
Dmitriy Pleshevskiy 2021-08-23 11:40:31 +03:00
parent 9d14ed5e84
commit 269291af04
1 changed files with 24 additions and 20 deletions

44
fsm.ts
View file

@ -1,23 +1,23 @@
type StateTransitions<Ctx, SN extends string> = WeakMap<
export type StateTransitions<Ctx, SN extends string> = WeakMap<
State<Ctx, SN>,
WeakSet<State<Ctx, SN>>
>;
type StateOrName<Ctx, SN extends string> =
export type StateOrName<Ctx, SN extends string> =
| State<Ctx, SN>
| SN;
type SourceTransitions<SN extends string> = Array<[SN, Array<SN>]>;
type SourceNamedTransitions<SN extends string> = Array<
export type SourceTransitions<SN extends string> = Array<[SN, Array<SN>]>;
export type SourceNamedTransitions<SN extends string> = Array<
[SN, Record<string, SN>]
>;
type SourceActions<SN extends string> = Record<string, Array<[SN, SN]>>;
export type SourceActions<SN extends string> = Record<string, Array<[SN, SN]>>;
export const _states = Symbol("states");
const _transitions = Symbol("transitions");
const _actions = Symbol("actions");
const _prevState = Symbol("previous state");
const _currState = Symbol("current state");
export const _transitions = Symbol("transitions");
export const _actions = Symbol("actions");
export const _prevState = Symbol("previous state");
export const _currState = Symbol("current state");
export class StateMachineBuilder<Ctx, SN extends string = string> {
[_states]: Map<SN, Events<Ctx, SN>>;
@ -123,12 +123,12 @@ export class StateMachineBuilder<Ctx, SN extends string = string> {
}
}
interface StateMachineOpts<Ctx, SN extends string> {
export interface StateMachineOpts<Ctx, SN extends string> {
transitions?: StateTransitions<Ctx, SN>;
actions?: Actions<Ctx, SN>;
}
type Actions<Ctx, SN extends string> = Map<
export type Actions<Ctx, SN extends string> = Map<
string,
Array<[State<Ctx, SN>, State<Ctx, SN>]>
>;
@ -219,10 +219,10 @@ export class StateMachine<Ctx, SN extends string = string> {
}
}
const _stateName = Symbol("state name");
const _stateEvents = Symbol("state events");
export const _stateName = Symbol("state name");
export const _stateEvents = Symbol("state events");
interface Events<Ctx, SN extends string> {
export interface Events<Ctx, SN extends string> {
beforeExit?(
fromState: State<Ctx, SN>,
toState: State<Ctx, SN>,
@ -274,42 +274,46 @@ export class State<Ctx, SN extends string = string> {
}
}
function validNormalizedState<Ctx, SN extends string>(
export function validNormalizedState<Ctx, SN extends string>(
states: State<Ctx, SN>[],
state: StateOrName<Ctx, SN>,
) {
return validState<Ctx, SN>(normalizeState(states, state));
}
function normalizeState<Ctx, SN extends string>(
export function normalizeState<Ctx, SN extends string>(
states: State<Ctx, SN>[],
state: StateOrName<Ctx, SN>,
): State<Ctx, SN> | undefined {
return isStr(state) ? stateFromName(states, state) : state;
}
function validStateFromName<Ctx, SN extends string>(
export function validStateFromName<Ctx, SN extends string>(
states: State<Ctx, SN>[],
name: SN,
) {
return validState<Ctx, SN>(stateFromName(states, name));
}
function stateFromName<Ctx, SN extends string>(
export function stateFromName<Ctx, SN extends string>(
states: State<Ctx, SN>[],
name: SN,
) {
return states.find((state) => state.name === name);
}
function validState<Ctx, SN extends string>(val: unknown): State<Ctx, SN> {
export function validState<Ctx, SN extends string>(
val: unknown,
): State<Ctx, SN> {
if (!isState<Ctx, SN>(val)) {
throw new TypeError("an instance of State class is expected");
}
return val;
}
function isState<Ctx, SN extends string>(val: unknown): val is State<Ctx, SN> {
export function isState<Ctx, SN extends string>(
val: unknown,
): val is State<Ctx, SN> {
return val instanceof State;
}