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							- function number(n) {
 
-     if (!Number.isSafeInteger(n) || n < 0)
 
-         throw new Error(`positive integer expected, not ${n}`);
 
- }
 
- function bool(b) {
 
-     if (typeof b !== 'boolean')
 
-         throw new Error(`boolean expected, not ${b}`);
 
- }
 
- // copied from utils
 
- export function isBytes(a) {
 
-     return (a instanceof Uint8Array ||
 
-         (a != null && typeof a === 'object' && a.constructor.name === 'Uint8Array'));
 
- }
 
- function bytes(b, ...lengths) {
 
-     if (!isBytes(b))
 
-         throw new Error('Uint8Array expected');
 
-     if (lengths.length > 0 && !lengths.includes(b.length))
 
-         throw new Error(`Uint8Array expected of length ${lengths}, not of length=${b.length}`);
 
- }
 
- function hash(h) {
 
-     if (typeof h !== 'function' || typeof h.create !== 'function')
 
-         throw new Error('Hash should be wrapped by utils.wrapConstructor');
 
-     number(h.outputLen);
 
-     number(h.blockLen);
 
- }
 
- function exists(instance, checkFinished = true) {
 
-     if (instance.destroyed)
 
-         throw new Error('Hash instance has been destroyed');
 
-     if (checkFinished && instance.finished)
 
-         throw new Error('Hash#digest() has already been called');
 
- }
 
- function output(out, instance) {
 
-     bytes(out);
 
-     const min = instance.outputLen;
 
-     if (out.length < min) {
 
-         throw new Error(`digestInto() expects output buffer of length at least ${min}`);
 
-     }
 
- }
 
- export { number, bool, bytes, hash, exists, output };
 
- const assert = { number, bool, bytes, hash, exists, output };
 
- export default assert;
 
- //# sourceMappingURL=_assert.js.map
 
 
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