'use strict';Object.defineProperty(exports,Symbol.toStringTag,{value:'Module'});const fetchAssets=require('../../_virtual/fetch-assets.cjs'),require$$0=require('picocolors'),fetchRetry=require('./fetch-retry.cjs'),require$$2=require('foxts/wait'),require$$6=require('foxts/guard'),textLineTransformStream=require('./text-line-transform-stream.cjs'),processLine=require('./process-line.cjs');var hasRequiredFetchAssets;

function requireFetchAssets () {
	if (hasRequiredFetchAssets) return fetchAssets.__exports;
	hasRequiredFetchAssets = 1;
	(function (exports) {
		Object.defineProperty(exports, "__esModule", {
		    value: true
		});
		function _export(target, all) {
		    for(var name in all)Object.defineProperty(target, name, {
		        enumerable: true,
		        get: all[name]
		    });
		}
		_export(exports, {
		    CustomAbortError: function() {
		        return CustomAbortError;
		    },
		    fetchAssets: function() {
		        return fetchAssets;
		    }
		});
		const _picocolors = /*#__PURE__*/ _interop_require_default(require$$0);
		const _fetchretry = /*@__PURE__*/ fetchRetry.__require();
		const _wait = require$$2;
		const _guard = require$$6;
		const _textlinetransformstream = /*@__PURE__*/ textLineTransformStream.__require();
		const _processline = /*@__PURE__*/ processLine.__require();
		function _interop_require_default(obj) {
		    return obj && obj.__esModule ? obj : {
		        default: obj
		    };
		}
		class CustomAbortError extends Error {
		    name = 'AbortError';
		    digest = 'AbortError';
		}
		const reusedCustomAbortError = new CustomAbortError();
		async function fetchAssets(url, fallbackUrls, processLine = false) {
		    const controller = new AbortController();
		    const createFetchFallbackPromise = async (url, index)=>{
		        if (index >= 0) {
		            // Most assets can be downloaded within 250ms. To avoid wasting bandwidth, we will wait for 500ms before downloading from the fallback URL.
		            try {
		                await (0, _wait.waitWithAbort)(50 + (index + 1) * 100, controller.signal);
		            } catch  {
		                console.log(_picocolors.default.gray('[fetch cancelled early]'), _picocolors.default.gray(url));
		                throw reusedCustomAbortError;
		            }
		        }
		        if (controller.signal.aborted) {
		            console.log(_picocolors.default.gray('[fetch cancelled]'), _picocolors.default.gray(url));
		            throw reusedCustomAbortError;
		        }
		        const res = await (0, _fetchretry.$$fetch)(url, {
		            signal: controller.signal,
		            ..._fetchretry.defaultRequestInit
		        });
		        let stream = (0, _guard.nullthrow)(res.body).pipeThrough(new TextDecoderStream()).pipeThrough(new _textlinetransformstream.TextLineStream());
		        if (processLine) {
		            stream = stream.pipeThrough(new _processline.ProcessLineStream());
		        }
		        const arr = await Array.fromAsync(stream);
		        if (arr.length < 1) {
		            throw new _fetchretry.ResponseError(res, url, 'empty response w/o 304');
		        }
		        controller.abort();
		        return arr;
		    };
		    if (!fallbackUrls || fallbackUrls.length === 0) {
		        return createFetchFallbackPromise(url, -1);
		    }
		    return Promise.any([
		        createFetchFallbackPromise(url, -1),
		        ...fallbackUrls.map(createFetchFallbackPromise)
		    ]);
		} 
	} (fetchAssets.__exports));
	return fetchAssets.__exports;
}exports.__require=requireFetchAssets;