Function objectMap

objectMap<K extends string, V, NK extends PropertyKey = K, NV = V>(
obj: Record<K, V>,
mapper: (key: K, value: V) => [NK, NV] | undefined,
): Record<NK, NV>
Map key/value pairs for an object, and construct a new one

为一个对象映射键值对，并构造一个新对象
Type Parameters
- K extends string
  The type of the key (extends PropertyKey) / 键的类型（继承 PropertyKey）
- V
  The type of the value / 值的类型
- NK extends PropertyKey = K
- NV = V
Parameters
- obj: Record<K, V>
  The source object. 源对象
- mapper: (key: K, value: V) => [NK, NV] | undefined
  The mapper function to transform key/value pairs. 用于转换键值对的映射函数
Returns Record<NK, NV>
A new object with transformed key/value pairs. 具有转换后键值对的新对象
Remarks
Dangerous keys (__proto__, constructor, prototype) are silently filtered out from the result object. If the mapper function returns undefined for a key/value pair, that entry is removed from the result.

危险键（__proto__、constructor、prototype）会被静默过滤，不会出现在结果对象中。如果映射函数返回 undefined，则该键值对会从结果中被移除。
Example
```
// Transform:
objectMap({ a: 1, b: 2 }, (k, v) => [k.toString().toUpperCase(), v.toString()])
// { A: '1', B: '2' }
```
Example
```
// Swap key/value:
objectMap({ a: 1, b: 2 }, (k, v) => [v, k])
// { 1: 'a', 2: 'b' }
```
Example
```
// Filter keys:
objectMap({ a: 1, b: 2 }, (k, v) => k === 'a' ? undefined : [k, v])
// { b: 2 }
```
- Defined in src/object/map.ts:45

Function objectMap

Type Parameters

Parameters

Returns Record<NK, NV>

Remarks

Example

Example

Example

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