isKnown

Whether a raw license string resolves to at least one recognized family — false for an empty string, a purely non-informative claim ("custom", "unknown", "LicenseRef-EULA", …), or a compound expression where every token is non-informative.

Available since v3.1.2

Import

import { isKnown } from '@helpers4/license';
// or, from the all-in-one package (same code, one install):
import { isKnown } from 'helpers4/license';

Signature

isKnown(raw: string): boolean

Parameters

Parameter	Type	Description
raw	string	The raw license string to check

Returns

boolean — true if at least one token in raw resolves to a real family

Examples

Filter out entries with no real license information

Handy for flagging catalog entries whose license field is not actually usable.

['MIT', 'custom:Acme EULA', 'unknown'].filter(isKnown)
// => ['MIT']

A vendor-specific EULA is not a recognized family

“custom:” names the vendor’s own license text, not a known open-source family.

isKnown('custom:Acme End User License')
// => false

Source

View source on GitHub