57 lines
1.5 KiB
JavaScript
57 lines
1.5 KiB
JavaScript
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var express = require('express');
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var path = require('path');
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var middlewares = express.middlewares = {};
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function safeRequire(m) {
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try {
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return require(m);
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} catch (err) {
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return undefined;
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}
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}
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function createMiddlewareNotInstalled(memberName, moduleName) {
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return function () {
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throw new Error('The middleware loopback.' + memberName + ' is not installed.\n' +
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'Please run `npm install ' + moduleName + '` to fix the problem.');
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};
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}
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var middlewareModules = {
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"compress": "compression",
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"timeout": "connect-timeout",
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"cookieParser": "cookie-parser",
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"cookieSession": "cookie-session",
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"csrf": "csurf",
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"errorHandler": "errorhandler",
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"session": "express-session",
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"methodOverride": "method-override",
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"logger": "morgan",
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"responseTime": "response-time",
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"favicon": "serve-favicon",
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"directory": "serve-index",
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// "static": "serve-static",
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"vhost": "vhost"
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};
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middlewares.bodyParser = safeRequire('body-parser');
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middlewares.json = middlewares.bodyParser && middlewares.bodyParser.json;
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middlewares.urlencoded = middlewares.bodyParser && middlewares.bodyParser.urlencoded;
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for (var m in middlewareModules) {
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var moduleName = middlewareModules[m];
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middlewares[m] = safeRequire(moduleName) || createMiddlewareNotInstalled(m, moduleName);
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}
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// serve-favicon requires a path
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var favicon = middlewares.favicon;
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middlewares.favicon = function (icon, options) {
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icon = icon || path.join(__dirname, '../favicon.ico');
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return favicon(icon, options);
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};
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module.exports = express;
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