use-travel
Version:
A React hook for state time travel with undo, redo, reset and archive functionalities.
194 lines • 33.3 kB
JavaScript
import { __rest } from "tslib";
import { useCallback, useMemo, useState } from 'react';
import { apply, create, } from 'mutative';
import { useMutative } from 'use-mutative';
/**
* A hook to travel in the history of a state
*/
export const useTravel = (initialState, _options = {}) => {
const { maxHistory = 10, initialPatches, initialPosition = 0, autoArchive = true } = _options, options = __rest(_options, ["maxHistory", "initialPatches", "initialPosition", "autoArchive"]);
const [position, setPosition] = useState(initialPosition);
const [tempPatches, setTempPatches] = useMutative(() => ({
patches: [],
inversePatches: [],
}));
const [allPatches, setAllPatches] = useMutative(() => (initialPatches !== null && initialPatches !== void 0 ? initialPatches : {
patches: [],
inversePatches: [],
}));
const [state, setState] = useState(initialState);
const cachedSetState = useCallback((updater) => {
const [nextState, patches, inversePatches] = (typeof updater === 'function'
? create(state, updater, Object.assign(Object.assign({}, options), { enablePatches: true }))
: create(state, () => updater, Object.assign(Object.assign({}, options), { enablePatches: true })));
setState(nextState);
if (autoArchive) {
setPosition(maxHistory < allPatches.patches.length + 1 ? maxHistory : position + 1);
setAllPatches((allPatchesDraft) => {
const notLast = position < allPatchesDraft.patches.length;
// Remove all patches after the current position
if (notLast) {
allPatchesDraft.patches.splice(position, allPatchesDraft.patches.length - position);
allPatchesDraft.inversePatches.splice(position, allPatchesDraft.inversePatches.length - position);
}
allPatchesDraft.patches.push(patches);
allPatchesDraft.inversePatches.push(inversePatches);
if (maxHistory < allPatchesDraft.patches.length) {
allPatchesDraft.patches = allPatchesDraft.patches.slice(-maxHistory);
allPatchesDraft.inversePatches =
allPatchesDraft.inversePatches.slice(-maxHistory);
}
});
}
else {
const notLast = position <
allPatches.patches.length + Number(!!tempPatches.patches.length);
// Remove all patches after the current position
if (notLast) {
allPatches.patches.splice(position, allPatches.patches.length - position);
allPatches.inversePatches.splice(position, allPatches.inversePatches.length - position);
}
if (!tempPatches.patches.length || notLast) {
setPosition(maxHistory < allPatches.patches.length + 1
? maxHistory
: position + 1);
}
setTempPatches((tempPatchesDraft) => {
if (notLast) {
tempPatchesDraft.patches.length = 0;
tempPatchesDraft.inversePatches.length = 0;
}
tempPatchesDraft.patches.push(patches);
tempPatchesDraft.inversePatches.push(inversePatches);
});
}
}, [allPatches, state, position, setTempPatches]);
const archive = () => {
if (autoArchive) {
console.warn('Auto archive is enabled, no need to archive manually');
return;
}
if (!tempPatches.patches.length)
return;
setAllPatches((allPatchesDraft) => {
// All patches will be merged, it helps to minimize the patch structure
const [, patches, inversePatches] = create(state, (draft) => apply(draft, tempPatches.inversePatches.flat().reverse()), {
enablePatches: true,
});
allPatchesDraft.patches.push(inversePatches);
allPatchesDraft.inversePatches.push(patches);
if (maxHistory < allPatchesDraft.patches.length) {
allPatchesDraft.patches = allPatchesDraft.patches.slice(-maxHistory);
allPatchesDraft.inversePatches = allPatchesDraft.inversePatches.slice(-maxHistory);
}
});
setTempPatches((tempPatchesDraft) => {
tempPatchesDraft.patches.length = 0;
tempPatchesDraft.inversePatches.length = 0;
});
};
const shouldArchive = useMemo(() => !autoArchive && !!tempPatches.patches.length, [tempPatches]);
const _allPatches = useMemo(() => {
let mergedPatches = allPatches;
if (shouldArchive) {
mergedPatches = {
patches: allPatches.patches.concat(),
inversePatches: allPatches.inversePatches.concat(),
};
mergedPatches.patches.push(tempPatches.patches.flat());
mergedPatches.inversePatches.push(tempPatches.inversePatches.flat().reverse());
}
return mergedPatches;
}, [allPatches, tempPatches, shouldArchive]);
const cachedTravels = useMemo(() => {
const go = (nextPosition) => {
const back = nextPosition < position;
if (shouldArchive) {
archive();
}
if (nextPosition > _allPatches.patches.length) {
console.warn(`Can't go forward to position ${nextPosition}`);
nextPosition = _allPatches.patches.length;
}
if (nextPosition < 0) {
console.warn(`Can't go back to position ${nextPosition}`);
nextPosition = 0;
}
if (nextPosition === position)
return;
if (shouldArchive) {
_allPatches.inversePatches.slice(-1)[0].reverse();
}
setState(() => apply(state, back
? _allPatches.inversePatches
.slice(-maxHistory)
.slice(nextPosition)
.flat()
.reverse()
: _allPatches.patches
.slice(-maxHistory)
.slice(position, nextPosition)
.flat()));
setPosition(nextPosition);
};
let cachedHistory;
return {
position,
getHistory: () => {
if (cachedHistory)
return cachedHistory;
cachedHistory = [state];
let currentState = state;
const patches = !autoArchive && _allPatches.patches.length > maxHistory
? _allPatches.patches.slice(_allPatches.patches.length - maxHistory)
: _allPatches.patches;
const inversePatches = !autoArchive && _allPatches.inversePatches.length > maxHistory
? _allPatches.inversePatches.slice(_allPatches.inversePatches.length - maxHistory)
: _allPatches.inversePatches;
for (let i = position; i < patches.length; i++) {
currentState = apply(currentState, patches[i]);
cachedHistory.push(currentState);
}
currentState = state;
for (let i = position - 1; i > -1; i--) {
currentState = apply(currentState, inversePatches[i]);
cachedHistory.unshift(currentState);
}
return cachedHistory;
},
patches: shouldArchive ? _allPatches : allPatches,
back: (amount = 1) => {
go(position - amount);
},
forward: (amount = 1) => {
go(position + amount);
},
reset: () => {
setPosition(initialPosition);
setAllPatches(() => initialPatches !== null && initialPatches !== void 0 ? initialPatches : { patches: [], inversePatches: [] });
setState(() => initialState);
setTempPatches(() => ({ patches: [], inversePatches: [] }));
},
go,
canBack: () => position > 0,
canForward: () => shouldArchive
? position < _allPatches.patches.length - 1
: position < allPatches.patches.length,
canArchive: () => shouldArchive,
archive,
};
}, [
position,
allPatches,
setPosition,
setAllPatches,
setState,
initialState,
state,
tempPatches,
_allPatches,
shouldArchive,
]);
return [state, cachedSetState, cachedTravels];
};
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{ useCallback, useMemo, useState } from 'react';\nimport {\n  type Options as MutativeOptions,\n  type Patches,\n  type Draft,\n  type Immutable,\n  apply,\n  create,\n} from 'mutative';\nimport { useMutative } from 'use-mutative';\n\ntype TravelPatches = {\n  patches: Patches[];\n  inversePatches: Patches[];\n};\n\ntype Options<F extends boolean, A extends boolean> = {\n  /**\n   * The maximum number of history to keep, by default `10`\n   */\n  maxHistory?: number;\n  /**\n   * The initial position in the history, by default `0`\n   */\n  initialPosition?: number;\n  /**\n   * The initial patches of the history\n   */\n  initialPatches?: TravelPatches;\n  /**\n   * Whether to automatically archive the current state, by default `true`\n   */\n  autoArchive?: A;\n} & Omit<MutativeOptions<true, F>, 'enablePatches'>;\n\ntype InitialValue<I extends any> = I extends (...args: any) => infer R ? R : I;\ntype DraftFunction<S> = (draft: Draft<S>) => void;\ntype Updater<S> = (value: S | (() => S) | DraftFunction<S>) => void;\ntype Value<S, F extends boolean> = F extends true\n  ? Immutable<InitialValue<S>>\n  : InitialValue<S>;\n\ninterface Controls<S, F extends boolean> {\n  /**\n   * The current position in the history\n   */\n  position: number;\n  /**\n   * Get the history of the state\n   */\n  getHistory: () => Value<S, F>[];\n  /**\n   * The patches of the history\n   */\n  patches: TravelPatches;\n  /**\n   * Go back in the history\n   */\n  back: (amount?: number) => void;\n  /**\n   * Go forward in the history\n   */\n  forward: (amount?: number) => void;\n  /**\n   * Reset the history\n   */\n  reset: () => void;\n  /**\n   * Go to a specific position in the history\n   */\n  go: (position: number) => void;\n  /**\n   * Check if it's possible to go back\n   */\n  canBack: () => boolean;\n  /**\n   * Check if it's possible to go forward\n   */\n  canForward: () => boolean;\n}\n\ntype Result<S, F extends boolean, A extends boolean> = [\n  Value<S, F>,\n  Updater<InitialValue<S>>,\n  A extends false\n    ? Controls<S, F> & {\n        /**\n         * Archive the current state\n         */\n        archive: () => void;\n        /**\n         * Check if it's possible to archive the current state\n         */\n        canArchive: () => boolean;\n      }\n    : Controls<S, F>\n];\n\n/**\n * A hook to travel in the history of a state\n */\nexport const useTravel = <S, F extends boolean, A extends boolean>(\n  initialState: S,\n  _options: Options<F, A> = {}\n) => {\n  const {\n    maxHistory = 10,\n    initialPatches,\n    initialPosition = 0,\n    autoArchive = true,\n    ...options\n  } = _options;\n  const [position, setPosition] = useState(initialPosition);\n  const [tempPatches, setTempPatches] = useMutative(\n    () =>\n      ({\n        patches: [],\n        inversePatches: [],\n      } as TravelPatches)\n  );\n  const [allPatches, setAllPatches] = useMutative(\n    () =>\n      (initialPatches ?? {\n        patches: [],\n        inversePatches: [],\n      }) as TravelPatches\n  );\n  const [state, setState] = useState(initialState);\n  const cachedSetState = useCallback(\n    (updater: any) => {\n      const [nextState, patches, inversePatches] = (\n        typeof updater === 'function'\n          ? create(state, updater, { ...options, enablePatches: true })\n          : create(state, () => updater, { ...options, enablePatches: true })\n      ) as [S, Patches<true>, Patches<true>];\n      setState(nextState);\n      if (autoArchive) {\n        setPosition(\n          maxHistory < allPatches.patches.length + 1 ? maxHistory : position + 1\n        );\n        setAllPatches((allPatchesDraft) => {\n          const notLast = position < allPatchesDraft.patches.length;\n          // Remove all patches after the current position\n          if (notLast) {\n            allPatchesDraft.patches.splice(\n              position,\n              allPatchesDraft.patches.length - position\n            );\n            allPatchesDraft.inversePatches.splice(\n              position,\n              allPatchesDraft.inversePatches.length - position\n            );\n          }\n          allPatchesDraft.patches.push(patches);\n          allPatchesDraft.inversePatches.push(inversePatches);\n          if (maxHistory < allPatchesDraft.patches.length) {\n            allPatchesDraft.patches = allPatchesDraft.patches.slice(\n              -maxHistory\n            );\n            allPatchesDraft.inversePatches =\n              allPatchesDraft.inversePatches.slice(-maxHistory);\n          }\n        });\n      } else {\n        const notLast =\n          position <\n          allPatches.patches.length + Number(!!tempPatches.patches.length);\n        // Remove all patches after the current position\n        if (notLast) {\n          allPatches.patches.splice(\n            position,\n            allPatches.patches.length - position\n          );\n          allPatches.inversePatches.splice(\n            position,\n            allPatches.inversePatches.length - position\n          );\n        }\n        if (!tempPatches.patches.length || notLast) {\n          setPosition(\n            maxHistory < allPatches.patches.length + 1\n              ? maxHistory\n              : position + 1\n          );\n        }\n        setTempPatches((tempPatchesDraft) => {\n          if (notLast) {\n            tempPatchesDraft.patches.length = 0;\n            tempPatchesDraft.inversePatches.length = 0;\n          }\n          tempPatchesDraft.patches.push(patches);\n          tempPatchesDraft.inversePatches.push(inversePatches);\n        });\n      }\n    },\n    [allPatches, state, position, setTempPatches]\n  );\n  const archive = () => {\n    if (autoArchive) {\n      console.warn('Auto archive is enabled, no need to archive manually');\n      return;\n    }\n    if (!tempPatches.patches.length) return;\n    setAllPatches((allPatchesDraft) => {\n      // All patches will be merged, it helps to minimize the patch structure\n      const [, patches, inversePatches] = create(\n        state as object,\n        (draft) => apply(draft, tempPatches.inversePatches.flat().reverse()),\n        {\n          enablePatches: true,\n        }\n      );\n      allPatchesDraft.patches.push(inversePatches);\n      allPatchesDraft.inversePatches.push(patches);\n      if (maxHistory < allPatchesDraft.patches.length) {\n        allPatchesDraft.patches = allPatchesDraft.patches.slice(-maxHistory);\n        allPatchesDraft.inversePatches = allPatchesDraft.inversePatches.slice(\n          -maxHistory\n        );\n      }\n    });\n    setTempPatches((tempPatchesDraft) => {\n      tempPatchesDraft.patches.length = 0;\n      tempPatchesDraft.inversePatches.length = 0;\n    });\n  };\n  const shouldArchive = useMemo(\n    () => !autoArchive && !!tempPatches.patches.length,\n    [tempPatches]\n  );\n  const _allPatches = useMemo(() => {\n    let mergedPatches = allPatches;\n    if (shouldArchive) {\n      mergedPatches = {\n        patches: allPatches.patches.concat(),\n        inversePatches: allPatches.inversePatches.concat(),\n      };\n      mergedPatches.patches.push(tempPatches.patches.flat());\n      mergedPatches.inversePatches.push(\n        tempPatches.inversePatches.flat().reverse()\n      );\n    }\n    return mergedPatches;\n  }, [allPatches, tempPatches, shouldArchive]);\n\n  const cachedTravels = useMemo(() => {\n    const go = (nextPosition: number) => {\n      const back = nextPosition < position;\n      if (shouldArchive) {\n        archive();\n      }\n      if (nextPosition > _allPatches.patches.length) {\n        console.warn(`Can't go forward to position ${nextPosition}`);\n        nextPosition = _allPatches.patches.length;\n      }\n      if (nextPosition < 0) {\n        console.warn(`Can't go back to position ${nextPosition}`);\n        nextPosition = 0;\n      }\n      if (nextPosition === position) return;\n      if (shouldArchive) {\n        _allPatches.inversePatches.slice(-1)[0].reverse();\n      }\n      setState(\n        () =>\n          apply(\n            state as object,\n            back\n              ? _allPatches.inversePatches\n                  .slice(-maxHistory)\n                  .slice(nextPosition)\n                  .flat()\n                  .reverse()\n              : _allPatches.patches\n                  .slice(-maxHistory)\n                  .slice(position, nextPosition)\n                  .flat()\n          ) as S\n      );\n      setPosition(nextPosition);\n    };\n    let cachedHistory: S[];\n    return {\n      position,\n      getHistory: () => {\n        if (cachedHistory) return cachedHistory;\n        cachedHistory = [state];\n        let currentState = state;\n        const patches =\n          !autoArchive && _allPatches.patches.length > maxHistory\n            ? _allPatches.patches.slice(_allPatches.patches.length - maxHistory)\n            : _allPatches.patches;\n        const inversePatches =\n          !autoArchive && _allPatches.inversePatches.length > maxHistory\n            ? _allPatches.inversePatches.slice(\n                _allPatches.inversePatches.length - maxHistory\n              )\n            : _allPatches.inversePatches;\n        for (let i = position; i < patches.length; i++) {\n          currentState = apply(currentState as object, patches[i]) as S;\n          cachedHistory.push(currentState);\n        }\n        currentState = state;\n        for (let i = position - 1; i > -1; i--) {\n          currentState = apply(currentState as object, inversePatches[i]) as S;\n          cachedHistory.unshift(currentState);\n        }\n        return cachedHistory;\n      },\n      patches: shouldArchive ? _allPatches : allPatches,\n      back: (amount = 1) => {\n        go(position - amount);\n      },\n      forward: (amount = 1) => {\n        go(position + amount);\n      },\n      reset: () => {\n        setPosition(initialPosition);\n        setAllPatches(\n          () => initialPatches ?? { patches: [], inversePatches: [] }\n        );\n        setState(() => initialState);\n        setTempPatches(() => ({ patches: [], inversePatches: [] }));\n      },\n      go,\n      canBack: () => position > 0,\n      canForward: () =>\n        shouldArchive\n          ? position < _allPatches.patches.length - 1\n          : position < allPatches.patches.length,\n      canArchive: () => shouldArchive,\n      archive,\n    };\n  }, [\n    position,\n    allPatches,\n    setPosition,\n    setAllPatches,\n    setState,\n    initialState,\n    state,\n    tempPatches,\n    _allPatches,\n    shouldArchive,\n  ]);\n  return [state, cachedSetState, cachedTravels] as Result<S, F, A>;\n};\n"]}