TypeScript compilation error #53
Description
% tsc decoder.ts:432:55 - error TS2339: Property 'error' does not exist on type 'Result<A, Partial<DecoderError>>'. Property 'error' does not exist on type 'Ok<A>'. 432 return Result.err(prependAt(`[${i}]`, nth.error)); ~~~~~ Found 1 error. In this code block:
static tuple<A>(decoders: Decoder<A>[]) { return new Decoder((json: unknown) => { if (isJsonArray(json)) { if (json.length !== decoders.length) { return Result.err({ message: `expected a tuple of length ${decoders.length}, got one of length ${ json.length }` }); } const result = []; for (let i: number = 0; i < decoders.length; i++) { const nth = decoders[i].decode(json[i]); if (nth.ok) { result[i] = nth.result; } else { return Result.err(prependAt(`[${i}]`, nth.error)); } } return Result.ok(result); } else { return Result.err({message: expectedGot(`a tuple of length ${decoders.length}`, json)}); } }); }