76 lines
1.7 KiB
JavaScript
76 lines
1.7 KiB
JavaScript
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/**
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* Module dependencies.
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*/
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var swig = require('swig');
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var http = require('http');
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/**
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* Expose `error`.
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*/
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module.exports = error;
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/**
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* Error middleware.
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*
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* - `template` defaults to ./error.html
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*
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* @param {Object} opts
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* @api public
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*/
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function error(opts) {
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opts = opts || {};
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// template
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var path = opts.template || __dirname + '/error.html';
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var render = swig.compileFile(path);
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// env
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var env = process.env.NODE_ENV || 'development';
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return function *error(next){
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try {
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yield next;
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if (404 == this.response.status && !this.response.body) this.throw(404);
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} catch (err) {
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this.status = err.status || 500;
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// application
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this.app.emit('error', err, this);
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// accepted types
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switch (this.accepts('html', 'text', 'json')) {
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case 'text':
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this.type = 'text/plain';
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if ('development' == env) this.body = err.message
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else if (err.expose) this.body = err.message
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else throw err;
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break;
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case 'json':
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this.type = 'application/json';
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if ('development' == env) this.body = { error: err.message }
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else if (err.expose) this.body = { error: err.message }
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else this.body = { error: http.STATUS_CODES[this.status] }
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break;
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case 'html':
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this.type = 'text/html';
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this.body = render({
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env: env,
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ctx: this,
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request: this.request,
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response: this.response,
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error: err.message,
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stack: err.stack,
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status: this.status,
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code: err.code
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});
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break;
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}
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}
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}
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}
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