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2.3 KiB
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1 line
2.3 KiB
Plaintext
{"version":3,"file":"store.cjs","sources":["../../src/store.ts"],"sourcesContent":["import { __flush } from './scheduler'\nimport type { AnyUpdater, Listener } from './types'\n\nexport interface StoreOptions<\n TState,\n TUpdater extends AnyUpdater = (cb: TState) => TState,\n> {\n /**\n * Replace the default update function with a custom one.\n */\n updateFn?: (previous: TState) => (updater: TUpdater) => TState\n /**\n * Called when a listener subscribes to the store.\n *\n * @return a function to unsubscribe the listener\n */\n onSubscribe?: (\n listener: Listener<TState>,\n store: Store<TState, TUpdater>,\n ) => () => void\n /**\n * Called after the state has been updated, used to derive other state.\n */\n onUpdate?: () => void\n}\n\nexport class Store<\n TState,\n TUpdater extends AnyUpdater = (cb: TState) => TState,\n> {\n listeners = new Set<Listener<TState>>()\n state: TState\n prevState: TState\n options?: StoreOptions<TState, TUpdater>\n\n constructor(initialState: TState, options?: StoreOptions<TState, TUpdater>) {\n this.prevState = initialState\n this.state = initialState\n this.options = options\n }\n\n subscribe = (listener: Listener<TState>) => {\n this.listeners.add(listener)\n const unsub = this.options?.onSubscribe?.(listener, this)\n return () => {\n this.listeners.delete(listener)\n unsub?.()\n }\n }\n\n setState = (updater: TUpdater) => {\n this.prevState = this.state\n this.state = this.options?.updateFn\n ? this.options.updateFn(this.prevState)(updater)\n : (updater as any)(this.prevState)\n\n // Always run onUpdate, regardless of batching\n this.options?.onUpdate?.()\n\n // Attempt to flush\n __flush(this as never)\n }\n}\n"],"names":["__flush"],"mappings":";;;AA0BO,MAAM,MAGX;AAAA,EAMA,YAAY,cAAsB,SAA0C;AAL5E,SAAA,gCAAgB,IAAsB;AAWtC,SAAA,YAAY,CAAC,aAA+B;;AACrC,WAAA,UAAU,IAAI,QAAQ;AAC3B,YAAM,SAAQ,gBAAK,YAAL,mBAAc,gBAAd,4BAA4B,UAAU;AACpD,aAAO,MAAM;AACN,aAAA,UAAU,OAAO,QAAQ;AACtB;AAAA,MACV;AAAA,IACF;AAEA,SAAA,WAAW,CAAC,YAAsB;;AAChC,WAAK,YAAY,KAAK;AACtB,WAAK,UAAQ,UAAK,YAAL,mBAAc,YACvB,KAAK,QAAQ,SAAS,KAAK,SAAS,EAAE,OAAO,IAC5C,QAAgB,KAAK,SAAS;AAGnC,uBAAK,YAAL,mBAAc,aAAd;AAGAA,gBAAAA,QAAQ,IAAa;AAAA,IACvB;AAzBE,SAAK,YAAY;AACjB,SAAK,QAAQ;AACb,SAAK,UAAU;AAAA,EAAA;AAwBnB;;"} |