Function isTypeStringOrBoolean

src/common/other.ts:99–101

(
  type: string,
)

export const ifNotUndefined = getIfNotFunction(isUndefined);

export const isTypeStringOrBoolean = (
  type: string,
): type is 'string' | 'boolean' => type == STRING || type == BOOLEAN;

export const isString = (thing: unknown): thing is string =>
  getTypeOf(thing) == STRING;