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import { Api } from 'lambda-serverless-api';

const api = Api({});

const limit = process.env.RATE_LIMIT === undefined

? undefined

: parseInt(process.env.RATE_LIMIT, 10);

export const sum = api.wrap('GET sum', [

api.Str('input', 'query')

], { limit }, ({ input }) => {

const inputParsed = JSON.parse(input);

if (!(inputParsed instanceof Array) || inputParsed.some(Number.isNaN)) {

throw api.ApiError('Please provide input query parameter list of numbers!');

}

return api.JsonResponse({ result: inputParsed.reduce((a, b) => a + b, 0) });

});

export const internalApi = api;