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import { array } from './array.js';
import { base64 } from './base64.js';
import { MaxLengthUpperBound } from './_internals/helpers/MaxLengthFromMinLength.js';
import { codePointsToStringMapper, codePointsToStringUnmapper } from './_internals/mappers/CodePointsToString.js';
import { stringToBase64Mapper, stringToBase64Unmapper } from './_internals/mappers/StringToBase64.js';
import { createSlicesForStringLegacy } from './_internals/helpers/SlicesForStringBuilder.js';
function base64String(constraints = {}) {
const { minLength: unscaledMinLength = 0, maxLength: unscaledMaxLength = MaxLengthUpperBound, size } = constraints;
const minLength = unscaledMinLength + 3 - ((unscaledMinLength + 3) % 4);
const maxLength = unscaledMaxLength - (unscaledMaxLength % 4);
const requestedSize = constraints.maxLength === undefined && size === undefined ? '=' : size;
if (minLength > maxLength)
throw new Error('Minimal length should be inferior or equal to maximal length');
if (minLength % 4 !== 0)
throw new Error('Minimal length of base64 strings must be a multiple of 4');
if (maxLength % 4 !== 0)
throw new Error('Maximal length of base64 strings must be a multiple of 4');
const charArbitrary = base64();
const experimentalCustomSlices = createSlicesForStringLegacy(charArbitrary, codePointsToStringUnmapper);
const enrichedConstraints = {
minLength,
maxLength,
size: requestedSize,
experimentalCustomSlices,
};
return array(charArbitrary, enrichedConstraints)
.map(codePointsToStringMapper, codePointsToStringUnmapper)
.map(stringToBase64Mapper, stringToBase64Unmapper);
}
export { base64String };
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