isNonEmpty

Checks if a plain object has at least one own enumerable string-keyed property. null and undefined are treated as empty objects and return false.

Symbol-keyed properties are not counted. Use Object.getOwnPropertySymbols separately if symbol keys matter for your use case.

Available since v2.0.3

Import

import { isNonEmpty } from '@helpers4/object';

Signature

isNonEmpty(value: Record<PropertyKey, unknown> | null | undefined): value is Record<PropertyKey, unknown>

Parameters

Parameter	Type	Description
value	Record<PropertyKey, unknown> | null | undefined	The object to check

Returns

value is Record<PropertyKey, unknown> — true if the object has at least one own enumerable string-keyed property; false for empty, null, or undefined. Acts as a type guard: the if branch narrows Record<PropertyKey, unknown> | null | undefined to Record<PropertyKey, unknown>.

Examples

Check if an object has own string-keyed properties

Returns true when at least one own enumerable string key is present.

isNonEmpty({ a: 1 })        // => true
isNonEmpty({ a: undefined }) // => true  (key exists)
isNonEmpty({})              // => false

Guard before iterating object keys

Use isNonEmpty before looping to avoid processing empty objects.

function processConfig(config: Record<string, unknown>): void {
  if (!isNonEmpty(config)) {
    console.warn('Config is empty');
    return;
  }
  for (const key of Object.keys(config)) {
    // process each key
  }
}

Name conflict

A helper named isNonEmpty also exists in @helpers4/array, @helpers4/string. If you need both in the same file, rename at import with as:

import { isNonEmpty as isNonEmpty4object } from '@helpers4/object';
import { isNonEmpty as isNonEmpty4array } from '@helpers4/array';
import { isNonEmpty as isNonEmpty4string } from '@helpers4/string';

See Name Conflicts for the full resolution guide.

Source

View source on GitHub