const chunks = {} // chunkId => exports const chunksInstalling = {} // chunkId => Promise const failedChunks = {} function importChunk(chunkId, src) { // Already installed if (chunks[chunkId]) { return Promise.resolve(chunks[chunkId]) } // Failed loading if (failedChunks[chunkId]) { return Promise.reject(failedChunks[chunkId]) } // Installing if (chunksInstalling[chunkId]) { return chunksInstalling[chunkId] } // Set a promise in chunk cache let resolve, reject const promise = chunksInstalling[chunkId] = new Promise((_resolve, _reject) => { resolve = _resolve reject = _reject }) // Clear chunk data from cache delete chunks[chunkId] // Start chunk loading const script = document.createElement('script') script.charset = 'utf-8' script.timeout = 120 script.src = src let timeout // Create error before stack unwound to get useful stacktrace later const error = new Error() // Complete handlers const onScriptComplete = script.onerror = script.onload = (event) => { // Cleanups clearTimeout(timeout) delete chunksInstalling[chunkId] // Avoid mem leaks in IE script.onerror = script.onload = null // Verify chunk is loaded if (chunks[chunkId]) { return resolve(chunks[chunkId]) } // Something bad happened const errorType = event && (event.type === 'load' ? 'missing' : event.type) const realSrc = event && event.target && event.target.src error.message = 'Loading chunk ' + chunkId + ' failed.\n(' + errorType + ': ' + realSrc + ')' error.name = 'ChunkLoadError' error.type = errorType error.request = realSrc failedChunks[chunkId] = error reject(error) } // Timeout timeout = setTimeout(() => { onScriptComplete({ type: 'timeout', target: script }) }, 120000) // Append script document.head.appendChild(script) // Return promise return promise } window.__NUXT_JSONP__ = function (chunkId, exports) { chunks[chunkId] = exports } window.__NUXT_JSONP_CACHE__ = chunks window.__NUXT_IMPORT__ = importChunk