What is @types/koa-bodyparser?
@types/koa-bodyparser provides TypeScript definitions for the koa-bodyparser middleware, which is used to parse the body of HTTP requests in Koa applications.
What are @types/koa-bodyparser's main functionalities?
Basic Usage
This code demonstrates the basic usage of koa-bodyparser. It sets up a Koa application, uses the bodyParser middleware to parse incoming request bodies, and then responds with the parsed body.
const Koa = require('koa');
const bodyParser = require('koa-bodyparser');
const app = new Koa();
app.use(bodyParser());
app.use(async ctx => {
ctx.body = ctx.request.body;
});
app.listen(3000);
Custom Options
This code demonstrates how to use custom options with koa-bodyparser. It configures the middleware to parse JSON, form, and text bodies with specific size limits.
const Koa = require('koa');
const bodyParser = require('koa-bodyparser');
const app = new Koa();
app.use(bodyParser({
enableTypes: ['json', 'form', 'text'],
jsonLimit: '1mb',
textLimit: '1mb',
formLimit: '1mb'
}));
app.use(async ctx => {
ctx.body = ctx.request.body;
});
app.listen(3000);
Error Handling
This code demonstrates how to handle errors in koa-bodyparser. It sets up a custom error handler that throws a 422 error if the body parsing fails.
const Koa = require('koa');
const bodyParser = require('koa-bodyparser');
const app = new Koa();
app.use(bodyParser({
onerror: (err, ctx) => {
ctx.throw('body parse error', 422);
}
}));
app.use(async ctx => {
ctx.body = ctx.request.body;
});
app.listen(3000);
Other packages similar to @types/koa-bodyparser
koa-body
koa-body is a more comprehensive body parser middleware for Koa that supports multipart, urlencoded, and JSON request bodies. It offers more features compared to koa-bodyparser, such as file uploads and custom handling of multipart requests.
koa-multer
koa-multer is a middleware for handling multipart/form-data, which is primarily used for uploading files. It is based on multer and provides more advanced file handling capabilities compared to koa-bodyparser.
koa-json-body
koa-json-body is a simpler alternative to koa-bodyparser that focuses solely on parsing JSON request bodies. It is lightweight and easy to use but lacks the flexibility of handling other content types.