@typed/io/esm/decoder/Tuple.js

Runtime IO type system

import { combine } from '@typed/effects';
import { toString } from '@typed/strings';
import { Array } from './Array';
import { DecodeError, decodeFailure } from './Decoder';
import { refinement } from './refinement';
export const tuple = (decoders) => {
    const expected = `[${decoders.map((d) => d.expected).join(`, `)}]`;
    return refinement(Array, function* (list) {
        if (list.length !== decoders.length) {
            return yield* decodeFailure(DecodeError.create(expected, `${toString(list)}`));
        }
        return yield* combine(...decoders.map((d, i) => d.decode(list[i])));
    }, expected);
};
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