


Uncovering the Cause of Fetch Errors in Next.js Static Site Compilation
When using Next.js to construct a static website, it's imperative to know the source of certain errors that might arise during the build process. In this instance, we'll address the specific problem faced during npm run build when utilizing both getStaticProps and getStaticPaths to retrieve data from an API route.
Error Details
The primary error being encountered is associated with an invalid JSON response received from the API route when executing npm run build. This response appears to originate from the API route pages/api/products/[slug].js.
Possible Causes
- Incorrect API Routing: Inspect the implementation of pages/api/products/[slug].js thoroughly to ascertain whether the data is fetched and processed appropriately. If there are any mistakes in this code, they may cause the invalid JSON response.
- API Route Availability: Keep in mind that API routes are not accessible during the build process. Therefore, if your getStaticProps or getStaticPaths functions rely on API routes to obtain data, this can lead to errors.
Recommended Resolution
To rectify this issue, consider refactoring your code in the following manner:
- Utilize Server-Side Logic: Since getStaticProps operates exclusively on the server-side, you can bypass API routes by integrating the server-side logic directly into these functions. This eliminates the need to fetch data from an API route, and instead permits you to retrieve data directly.
- Data Retrieval from Server: Directly access the data source, which in this case is stored in data/products, within getStaticProps and getStaticPaths. Modify your functions as follows:
// /pages/product/[slug] import db from '../../../data/products'; // Remaining code. export const getStaticProps = async ({ params: { slug }, locale }) = { const result = db.filter((item) => item.slug === slug); const data = result.filter((item) => item.locale === locale)[0]; const { title, keywords, description } = data; return { props: { data, description, keywords, title, }, }; }; export const getStaticPaths = async () = { const paths = db.map(({ slug, locale }) => ({ params: { slug: slug }, locale, })); return { fallback: true, paths, }; };
By adopting these changes, you'll remove the reliance on the API route, resolve the invalid JSON response error, and allow for seamless static website compilation.
The above is the detailed content of Why Am I Getting Fetch Errors During Next.js Static Site Compilation with `getStaticProps` and `getStaticPaths`?. For more information, please follow other related articles on the PHP Chinese website!

C and JavaScript achieve interoperability through WebAssembly. 1) C code is compiled into WebAssembly module and introduced into JavaScript environment to enhance computing power. 2) In game development, C handles physics engines and graphics rendering, and JavaScript is responsible for game logic and user interface.

JavaScript is widely used in websites, mobile applications, desktop applications and server-side programming. 1) In website development, JavaScript operates DOM together with HTML and CSS to achieve dynamic effects and supports frameworks such as jQuery and React. 2) Through ReactNative and Ionic, JavaScript is used to develop cross-platform mobile applications. 3) The Electron framework enables JavaScript to build desktop applications. 4) Node.js allows JavaScript to run on the server side and supports high concurrent requests.

Python is more suitable for data science and automation, while JavaScript is more suitable for front-end and full-stack development. 1. Python performs well in data science and machine learning, using libraries such as NumPy and Pandas for data processing and modeling. 2. Python is concise and efficient in automation and scripting. 3. JavaScript is indispensable in front-end development and is used to build dynamic web pages and single-page applications. 4. JavaScript plays a role in back-end development through Node.js and supports full-stack development.

C and C play a vital role in the JavaScript engine, mainly used to implement interpreters and JIT compilers. 1) C is used to parse JavaScript source code and generate an abstract syntax tree. 2) C is responsible for generating and executing bytecode. 3) C implements the JIT compiler, optimizes and compiles hot-spot code at runtime, and significantly improves the execution efficiency of JavaScript.

JavaScript's application in the real world includes front-end and back-end development. 1) Display front-end applications by building a TODO list application, involving DOM operations and event processing. 2) Build RESTfulAPI through Node.js and Express to demonstrate back-end applications.

The main uses of JavaScript in web development include client interaction, form verification and asynchronous communication. 1) Dynamic content update and user interaction through DOM operations; 2) Client verification is carried out before the user submits data to improve the user experience; 3) Refreshless communication with the server is achieved through AJAX technology.

Understanding how JavaScript engine works internally is important to developers because it helps write more efficient code and understand performance bottlenecks and optimization strategies. 1) The engine's workflow includes three stages: parsing, compiling and execution; 2) During the execution process, the engine will perform dynamic optimization, such as inline cache and hidden classes; 3) Best practices include avoiding global variables, optimizing loops, using const and lets, and avoiding excessive use of closures.

Python is more suitable for beginners, with a smooth learning curve and concise syntax; JavaScript is suitable for front-end development, with a steep learning curve and flexible syntax. 1. Python syntax is intuitive and suitable for data science and back-end development. 2. JavaScript is flexible and widely used in front-end and server-side programming.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment

VSCode Windows 64-bit Download
A free and powerful IDE editor launched by Microsoft

SublimeText3 Linux new version
SublimeText3 Linux latest version