Created
June 8, 2019 11:37
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/** | |
* Maps selector objects with keys | |
* | |
* @param { SelectorsMapObject } selectorsMapObject selectors map object | |
* @returns { SelectorsObject } selectors object | |
*/ | |
export function combineSelectors<S extends SelectorsMapObject, K extends keyof S>(selectorsMapObject: S): S[K] { | |
const combinedSelectors = {}; | |
Object.keys(selectorsMapObject).forEach(key => { | |
if (process.env.NODE_ENV !== 'production') { | |
if (typeof selectorsMapObject[key] === 'undefined') | |
warning(`No selector or selectorsObject provided for key "${ key }"`); | |
} | |
if (typeof selectorsMapObject[key] === 'object') { | |
const storeKey = key; | |
Object.keys(selectorsMapObject[storeKey]).forEach(selectorKey => { | |
if (process.env.NODE_ENV !== 'production') { | |
if (typeof selectorsMapObject[storeKey][selectorKey] === 'undefined') | |
warning(`No selector provided for key "${ selectorKey }"`); | |
else if (typeof selectorsMapObject[storeKey][selectorKey] !== 'function') | |
warning(`No selector provided for key "${ selectorKey }"`); | |
} | |
if (typeof selectorsMapObject[storeKey][selectorKey] === 'function') | |
combinedSelectors[selectorKey] = (state, ...args) => | |
selectorsMapObject[key][selectorKey](state[storeKey], ...args); | |
}); | |
} | |
}); | |
return combinedSelectors as S[K]; | |
} |
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