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@sidestream-tech/nuxt-sidebase-parse

nuxt-sidebase-parse

A nuxt focused package to make data validation and parsing easy. This package follows the design philosophy of the article parse, don't validate. It uses zod for parsing data from the user, APIs, your own functions, ...

Full tsdoc-documentation is here: https://nuxt-sidebase-parse.sidebase.io

Features

• ✔️ Validate Data using zod
• ✔️ Deserialize and Serialize user, backend, api data
• ✔️ Helpers focused on Nuxt 3 usage and developer experience

Usage

npm i @sidestream-tech/nuxt-sidebase-parse

Then, e.g., in your code:

• Make an arbitrary parser, e.g., to deserialize data from an API:
  • Example with valid data:

    import { z, makeParser } from "@sidestream-tech/nuxt-sidebase-parse"
    
    // Define the expected response schema
    const responseSchema = z.object({
        uuid: z.string().uuid(),
    })
    
    // Perform the request, use `makeParse` to pass a transformer for the data
    const { data, error } = useFetch('https://httpbin.org/uuid', {
        transform: makeParser(responseSchema),
    })
    
    console.log(`data is ${data.value}`)
    // -> `data is {"uuid":"f8df921c-d7f3-43c1-ac9b-3cf5d4da2f7b"}`
    
    console.log(`error is ${error.value}`)
    // -> `error is true`

  • Example with invalid data:

    import { z, makeParser } from "@sidestream-tech/nuxt-sidebase-parse"
    
    // Define the expected response schema
    const responseSchema = z.object({
        uuid: z.string().uuid(),
    })
    
    // Perform the request, use `makeParse` to pass a transformer for the data
    const { data, error } = useFetch('https://httpbin.org/ip', {
        transform: makeParser(responseSchema),
    })
    
    console.log(`data is ${data.value}`)
    // -> `data is null`
    
    console.log(`error is ${error.value}`)
    // -> `error is true`

• Handle user data in an endpoint:

  import { defineEventHandler } from 'h3'
  import type { CompatibilityEvent } from 'h3'
  import { z, parseParamsAs, parseBodyAs } from "@sidestream-tech/nuxt-sidebase-parse"
  
  // Define the schema of the parameters you expect the user to provide you with
  const paramsSchema = z.object({
      id: z.string().uuid(),
  })
  
  // Define the schema of the body you expect the user to provide you with
  const bodySchema = z.object({
      name: z.string(),
      age: z.number()
  })
  
  // Get a nice type to use throughout your code and components
  type RequestBody = z.infer<typeof bodySchema>
  
  export default defineEventHandler(async (event: CompatibilityEvent) => {
      // Validate and then get the parameters
      // This automatically throws a nice HTTP 422 error with more information if the data is invalid
      const params = parseParamsAs(event, paramsSchema)
  
      let body: RequestBody;
      try {
          body = parseBodyAs(event, paramsSchema)
      } catch(error) {
          // Fallback, this avoids automatic raising + returning of the HTTP 422 error
          body = {
              name: 'Bernd',
              age: 88
          }
      }
  
      // Return the full entity
      return {
          id: params.id,
          ...body
      }
  })

• Parse any data:

  import { z, parseDataAs } from "@sidestream-tech/nuxt-sidebase-parse"
  
  const parsedData = await parseDataAs({ test: "1" }, z.object({ test: z.number() )}))
  // -> throws! `"1"` is not a number, but a string!
  
  const parsedData = await parseDataAs({ test: 1 }, z.object({ test: z.number() )}))
  console.log(parsedData)
  // -> output: `1`
  
  
  const parsedData = await parseDataAs({ test: "1" }, z.object({ test: z.string().transform(v => parseInt(v)) )}))
  console.log(parsedData)
  // -> output: `1` (we used `.transform` to ensure that we get a number)
  

• Also works with async data, e.g., when fetching from another API or DB:

  import { z, parseDataAs } from "@sidestream-tech/nuxt-sidebase-parse"
  
  const fakeDatabaseQuery = async () => { id: 1 }
  const parsedData = await parseDataAs(fakeDatabaseQuery, z.object({ id: z.number() )}))
  
  console.log(parsedData)
  // -> output: `1`

Documentation

Full tsdoc-documentation is here: https://nuxt-sidebase-parse.sidebase.io

This module exports:

• parseBodyAs: Parse body of h3 event
• parseParamsAs: Parse params of h3 event
• parseQueryAs: Parse query of h3 event
• parseCookieAs: Parse cookies of h3 event
• parseHeaderAs: Parse header of h3 event
• parseDataAs: Parse sync or async data
• makeParser: Make your own parser (see example above)
• z: zod, the library used for parsing