'use strict';
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function getSocketServerImplementation(options) {
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let ServerImplementation;
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let serverImplFound = true;
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switch (typeof options.transportMode.server) {
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case 'string':
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// could be 'sockjs', in the future 'ws', or a path that should be required
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if (options.transportMode.server === 'sockjs') {
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ServerImplementation = require('../servers/SockJSServer');
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} else if (options.transportMode.server === 'ws') {
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ServerImplementation = require('../servers/WebsocketServer');
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} else {
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try {
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// eslint-disable-next-line import/no-dynamic-require
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ServerImplementation = require(options.transportMode.server);
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} catch (e) {
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serverImplFound = false;
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}
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}
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break;
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case 'function':
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// potentially do more checks here to confirm that the user implemented this properlly
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// since errors could be difficult to understand
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ServerImplementation = options.transportMode.server;
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break;
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default:
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serverImplFound = false;
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}
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if (!serverImplFound) {
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throw new Error(
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"transportMode.server must be a string denoting a default implementation (e.g. 'sockjs', 'ws'), a full path to " +
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'a JS file which exports a class extending BaseServer (webpack-dev-server/lib/servers/BaseServer) ' +
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'via require.resolve(...), or the class itself which extends BaseServer'
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);
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}
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return ServerImplementation;
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}
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module.exports = getSocketServerImplementation;
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