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improve cache code

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Rene
2020-12-06 02:30:36 +01:00
parent 6facbcb687
commit 1435ee119b
1 changed files with 8 additions and 8 deletions
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packages/overlayscrollbars/src/support/cache/cache.ts
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+8 -8
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@@ -10,13 +10,15 @@ type Cache<T> = {
[P in keyof T]: CacheEntry<T[P]>; [P in keyof T]: CacheEntry<T[P]>;
}; };
type UpdateCacheProp<T> = <P extends keyof T>(prop: P, value: T[P], compare: (a?: T[P], b?: T[P]) => boolean) => void; type UpdateCacheProp<T> = <P extends keyof T>(prop: P, value: T[P], compare: CacheEqualFunction<T, P> | null) => void;
type PropsToUpdate<T> = Array<keyof T> | keyof T;
export type CacheUpdateFunction<T, P extends keyof T> = (current?: T[P], previous?: T[P]) => T[P]; export type CacheUpdateFunction<T, P extends keyof T> = (current?: T[P], previous?: T[P]) => T[P];
export type CacheEqualFunction<T, P extends keyof T> = (a?: T[P], b?: T[P]) => boolean; export type CacheEqualFunction<T, P extends keyof T> = (a?: T[P], b?: T[P]) => boolean;
export type CacheUpdate<T> = { export type CacheChanged<T> = {
[P in keyof T]: boolean; [P in keyof T]: boolean;
}; };
@@ -42,9 +44,7 @@ export type CacheUpdateInfo<T> = {
* @returns A function which can be called with wither one ar an array of properties which shall be updated. Optionally it can be called with the force param. * @returns A function which can be called with wither one ar an array of properties which shall be updated. Optionally it can be called with the force param.
* This function returns a object which contains all cache properties as booleans which indicate whether the corresponding cache values really changed or not. * This function returns a object which contains all cache properties as booleans which indicate whether the corresponding cache values really changed or not.
*/ */
export const createCache = <T>( export const createCache = <T>(cacheUpdateInfo: CacheUpdateInfo<T>): ((propsToUpdate?: PropsToUpdate<T>, force?: boolean) => CacheChanged<T>) => {
cacheUpdateInfo: CacheUpdateInfo<T>
): ((propsToUpdate?: Array<keyof T> | keyof T, force?: boolean) => CacheUpdate<T>) => {
const cache: Cache<T> = {} as T; const cache: Cache<T> = {} as T;
const allProps: Array<keyof T> = keys(cacheUpdateInfo) as Array<keyof T>; const allProps: Array<keyof T> = keys(cacheUpdateInfo) as Array<keyof T>;
@@ -60,8 +60,8 @@ export const createCache = <T>(
cache[prop]._changed = equal ? !equal(curr, value) : curr !== value; cache[prop]._changed = equal ? !equal(curr, value) : curr !== value;
}; };
const flush = (force?: boolean): CacheUpdate<T> => { const flush = (force?: boolean): CacheChanged<T> => {
const result: CacheUpdate<T> = {} as CacheUpdate<T>; const result: CacheChanged<T> = {} as CacheChanged<T>;
each(allProps, (prop: keyof T) => { each(allProps, (prop: keyof T) => {
result[prop] = !!(cache[prop]._changed || force); result[prop] = !!(cache[prop]._changed || force);
@@ -71,7 +71,7 @@ export const createCache = <T>(
return result; return result;
}; };
return (propsToUpdate?: Array<keyof T> | keyof T, force?: boolean) => { return (propsToUpdate?: PropsToUpdate<T>, force?: boolean) => {
const finalPropsToUpdate: Array<keyof T> = const finalPropsToUpdate: Array<keyof T> =
(isString(propsToUpdate) ? ([propsToUpdate] as Array<keyof T>) : (propsToUpdate as Array<keyof T>)) || allProps; (isString(propsToUpdate) ? ([propsToUpdate] as Array<keyof T>) : (propsToUpdate as Array<keyof T>)) || allProps;
each(finalPropsToUpdate, (prop) => { each(finalPropsToUpdate, (prop) => {