Why do I get the 'exports is not defined' error when introducing gio statistics files in Vue project? How to solve this problem?

Solution to the "exports is not defined" error in Vue project

When introducing statistics file named gio-alip.js in Vue 2.6 project, you may encounter exports is not defined error. This article analyzes the cause of the error and provides a solution.

Problem description

Try to import gio-alip.js using CommonJS module import method:

 var gio = require("@/utils/gio-alip.js").default;
console.log(gio);

The result is an error exports is not defined . Examples of the content of the gio-alip.js file are as follows:

 // gio-alip.js
var gio = { /* Content*/ };
module.exports = gio;

Analysis of the cause of error

This error originates from using CommonJS module import methods ( require and module.exports ) in the Vue project (default is used for ES6 module systems). Vue environment does not support CommonJS exports objects.

Solution

1. Import using ES6 module

It is recommended to use ES6 module import method:

 import gio from "@/utils/gio-alip.js";
console.log(gio);

2. Configure Babel to support CommonJS (not recommended)

If you have to use CommonJS, you can add @babel/plugin-transform-modules-commonjs plugin in .babelrc or babel.config.js :

 {
  "plugins": ["@babel/plugin-transform-modules-commonjs"]
}

Note: Directly using ES6 module import is a simpler and more in line with Vue project specifications, and it is recommended to use it first. Using Babel plugins can bring additional complexity, and this method is not recommended unless there are special reasons.

3. Check the gio-alip.js file

Make sure the gio-alip.js file uses the export default or export syntax instead of module.exports :

 // gio-alip.js modified version // Use export default
const gio = { /* content*/ };
export default gio;

// Or use export
export const gio = { /* content*/ };

Through the above method, you can solve exports is not defined error when introducing the gio-alip.js file in the Vue project. It is recommended to give priority to the import method of ES6 modules to maintain code simplicity and project consistency.

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