Created
July 3, 2022 11:51
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export function isArray(val: any): boolean { | |
return Array.isArray(val) | |
} | |
export function isPlainObject(val: any): boolean { | |
if (toString.call(val) !== '[object Object]') { | |
return false | |
} | |
const prototype: Record<string, (...args: any[]) => any> = Object.getPrototypeOf(val) | |
return prototype === null || prototype === Object.prototype | |
} | |
function forEach(obj: any, fn: (...args: any[]) => any): any { | |
// Don't bother if no value provided | |
if (obj === null || typeof obj === 'undefined') { | |
return | |
} | |
// Force an array if not already something iterable | |
if (typeof obj !== 'object') { | |
/*eslint no-param-reassign:0*/ | |
obj = [obj] | |
} | |
if (isArray(obj)) { | |
// Iterate over array values | |
for (let i = 0; i < obj.length; i++) { | |
// eslint-disable-next-line no-useless-call | |
fn.call(null, obj[i], i, obj) | |
} | |
} else { | |
// Iterate over object keys | |
for (const key in obj) { | |
if (Object.prototype.hasOwnProperty.call(obj, key)) { | |
// eslint-disable-next-line no-useless-call | |
fn.call(null, obj[key], key, obj) | |
} | |
} | |
} | |
} | |
export function merge(...args: any[]): Record<string, any> { | |
const result: any = {} | |
function assignValue(val: any, key: string): any { | |
if (isPlainObject(result[key]) && isPlainObject(val)) { | |
result[key] = merge(result[key], val) | |
} else if (isPlainObject(val)) { | |
result[key] = merge({}, val) | |
} else if (isArray(val)) { | |
result[key] = val.slice() | |
} else { | |
result[key] = val | |
} | |
} | |
for (let i = 0; i < arguments.length; i++) { | |
forEach(args[i], assignValue) | |
} | |
return result | |
} |
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