Ajv validator middleware for Hono
Validator middleware using Ajv for Hono applications.
Define your schema with Ajv and validate incoming requests.
Usage
No Hook:
import { type JSONSchemaType } from 'ajv';
import { ajvValidator } from '@hono/ajv-validator';
const schema: JSONSchemaType<{ name: string; age: number }> = {
type: 'object',
properties: {
name: { type: 'string' },
age: { type: 'number' },
},
required: ['name', 'age'],
additionalProperties: false,
} as const;
const route = app.post('/user', ajvValidator('json', schema), (c) => {
const user = c.req.valid('json');
return c.json({ success: true, message: `${user.name} is ${user.age}` });
});
Hook:
import { type JSONSchemaType } from 'ajv';
import { ajvValidator } from '@hono/ajv-validator';
const schema: JSONSchemaType<{ name: string; age: number }> = {
type: 'object',
properties: {
name: { type: 'string' },
age: { type: 'number' },
},
required: ['name', 'age'],
additionalProperties: false,
};
app.post(
'/user',
ajvValidator('json', schema, (result, c) => {
if (!result.success) {
return c.text('Invalid!', 400);
}
})
);
Author
Illia Khvost https://github.com/ikhvost
License
MIT