isNo.md

@accelint/predicates • Docs

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@accelint/predicates / isNo

Function: isNo()

isNo(val): boolean

Returns true if the given value is found in a case-insensitive list of "no" values.

False values: ['', '0', 'false', 'nan', 'null', 'undefined']

Additional values: ['n', 'no']

For a more liberal comparison/coercion to true or false see the converters package (@accelint/converters).

Parameters

• val: unknown

Returns

boolean

Pure

Example

isNo('n');       // true
isNo('');        // true
isNo(0);         // true
isNo(1);         // false
isNo(true);      // false
isNo('yes');     // false