validate-request-parameters

The purpose of this module is to enable configurable query parameter validation from HTTP request events, such as API Gateway Events or Express Routes.

Key Features

• Type Coercion
• Type Enforcement
• Default Values
• Defined Value Options
• Regular Expression Matching
• Apply Transforms to Values
• Numeric Value Ranges
• String Length Ranges

Working

• AWS APIGatewayEvent Handling (Lambda)
• Query String Parameter Validation

Not Working, yet

• Multi Value Query String Parameters
• Request Body JSON Validation
• Express.js Support

Lambda API Gateway Example

// https://.../query?searchTerm=code&limit=10&offset=10&order=asc&orderBy=nameimport{validateAPIGatewayEvent,QueryStringValueTypes,}from'@doneee/validate-request-parameters';import{toUpperCase,toLowerCase}from'@doneee/composable-transform-functions';constconfig={queryStringParameters: {offset: {type: QueryStringValueTypes.Integer,min: 0,defaultValue: 0,},limit: {type: QueryStringValueTypes.Integer,min: 1,max: 100,defaultValue: 10,},searchTerm: {type: QueryStringValueTypes.String,regex: /[a-z0-9]+/gi,min: 4,max: 75,},order: {type: QueryStringValueTypes.String,options: ['ASC','DESC'],defaultValue: 'ASC',transforms: [toUpperCase],},orderBy: {type: QueryStringValueTypes.String,transforms: [toLowerCase],options: ['name','date',],defaultValue: 'name',},},};exports.handler=(event)=>{const[params,paramErrors]=validateAPIGatewayEvent(event,config);// params = {// queryStringParameters: {// offset: 10,// limit: 10,// searchTerm: 'code',// order: 'ASC',// orderBy: 'name',// },// };// Use params without needing to do additional type checks or validation}